Titles of research papers/articles alongwith their abstracts. For full text, please contact to Editor-in-chief at : firstname.lastname@example.org
1. A. A. KINTOMO AND O. D. OJO [Non-destructive leaf area estimation in grain amaranth (Amaranthus cruentus L.)]. Res. on Crops 1 (3) : 267-270 (2000). Farming Systems Division National Horticultural Research Institute (NIHORT), Jericho Reservation, Idi-Ishin, P. M. B. 5432, Ibadan, Nigeria
Expanded and mature leaves of grain amaranth (Amaranthus cruentus L.), grown in field, were studied to derive a predictive regression equation for use in estimating the leaf lamina area (LA) during crop growth studies. A rapid non-destructive and precise method for leaf area determination on NH 84/452, NH84/445 and NH84/493 cultivars of grain amaranth was developed from linear measurements. A strong correlation existed between leaf area and various combinations of leaf length (L) and width (W). LA can be predicted precisely with the following regression models :
LA=3.6519+(L x W x 0.5427) (r=0.95) for NH84/452
LA= -0.6030+(L x W x 0.5946) (r=0.97) for NH84/445
LA=0.5049+(L x W x 0.4788 (r=0.99) for NH84/493
2. P. S. SENTHIL KUMAR AND K. KUMARASWAMY [Effect of manure-fertilizer schedules on quantity/intensity parameters of soil under rice monoculture in a permanent manurial experiment. Res. on Crops 1 (3) : 271-277 (2000). Department of Soil Science & Agricultural Chemistry, Agricultural College and Research Institute, Madurai-625 104, India
Potassium quantity-intensity relations were studied in a permanent manurial experiment conducted at the Agricultural College and Research Institute, Madurai since 1975. In this experiment, different manure-fertilizer schedules were tried in split plot design with two replications. The AReK (activity ratio at equilibrium) and DKo were higher in the treatments receiving one of the manures of FYM or green manure or urban compost 12.5 t ha-1 than in the no manure control and were higher in the treatments that received K than in the treatments without K. The N receiving treatments showed slightly lower value than the control. The values in the NPK treatments were higher than in the N and NP treatments. The PBCK and -DG values were found to be higher in the no manure control than in the treatments that received one of the manures and among the fertilizer treatments the treatments receiving N or without P and K recorded higher values than the other treatments, indicating the depletion of K from the soil K reserve.
3. R. K. SAMAIYA [Heat tolerance studies in late sown wheat genotypes]. Res. on Crops 1 (3) : 278-285 (2000). Department of Crop Physiology JNKVV Regional Agricultural Research Station, Sagar-470 002 (M. P.), India
An experiment was conducted at JNKVV Regional Agricultural Research Station, Sagar (M. P.) during rabi 1996 to study the heat tolerance trait in 12 wheat genotypes under late sown conditions. The wheat genotypes varied significantly for days to anthesis but this variation was reduced when days to maturity was taken into consideration. Biomass partitioning did not indicate firm relation with the yield. The study revealed that almost all the genotypes differed significantly for important heat tolerance traits viz., grain number, tiller number and for grain growth duration. Genotypes GW 190 and HD 2402 were superior in field because of higher tiller number and better grain growth rate, while GW 173 produced minimum yield inspite of having good tiller number due to poor grain number, grain weight and grain growth rate. Genotypes GW 190 and HD 2402 have outperformed other genotypes when both growth and yield attributing parameters were taken into consideration on the basis of the study. It was concluded that genotype HD 2189 possessed good heat tolerance character with moderate yield components.
4. SHRIKANT, Y. SINGH, A. K. SINGH AND ROHITASHWA [Genotype x environment interaction in pearl millet [Pennisetum glaucum (L.) R. Br.]. Res. on Crops 1 (3) : 286-288 (2000). Millet Scheme, Agricultural Research Station Rajasthan Agricultural University, Campus Durgapura, Jaipur-302 018, India
Sixteen early hybrids of pearl millet were tested in three environmental (location x year combination) conditions and stability parameters were worked out for days to 50% flowering and yield per plant. The mean squares due to hybrids, environments and hybrid x environment interaction were found to be highly significant for yield per plant and indicated variable response of hybrids under changing environments. However, days to 50% flowering was significant for hybrids but it was non-significant for hybrid x environment interaction, indicating insensibility of early hybrids which could be of great value under fluctuating environmental conditions.
5. N. K. SHARMA, O. R. MISRA, S. S. KUSHWAHA AND N. K. PACHLANIYA [Response of sorghum based cropping systems to chemical fertilisers, FYM and crop residues]. Res. on Crops 1 (3) : 289-291 (2000). JNKVV College of Agriculture, Indore-452 001 (M. P.), India
A field experiment was conducted to study the comparative performance of different sorghum based cropping systems and to assess the production potential and economics of different fertility levels, FYM and crop residues. The results indicated that the highest yield was recorded under sorghum+soybean cropping system which produced 95, 124, 38, 42.6, 46 and 47% additional grain yield over sorghum+soybean 30/90 cm paired row with two rows of soybean, 3 : 3 rows of sorghum and pigeonpea, sorghum and groundnut, sorghum+cowpea 30/90 PR with two rows of cowpea (fodder) sorghum-sorghum and sorghum+cotton cropping systems, respectively. Findings also indicated that the highest monetary return (Rs. 15964 ha-1) was obtained under sorghum+soybean having 30/90 cm paired row with two rows of soybean which was at par with sorghum-soybean cropping system. Highest monetary return (Rs. 12227 ha-1) was fetched by N80P40K40 kg ha-1 fertiliser level.
6. S. MUKHERJEE AND C. K. TECKCHANDANI [Fracture initiation in arhar (Cajanus cajan L.) seeds under compressive loading]. Res. on Crops 1 (3) : 292-296 (2000). Department of Post Harvest Process and Food Engineering, College of Agricultural Engineering, JNKVV, Jabalpur (M. P.), India
Arhar seeds were subjected to compressive loading along the transverse axis in two perpendicular directions with a view to determine the minimum load and energy required to initiate fracture in the grain. The seeds were tested at seven different moisture levels, ranging from 6.6 to 12.8% (w. b.) and load was applied at three different speeds (50, 100 and 200 mm/min). Investigations revealed that the load required for fracture initiation decreased, while the energy consumption increased with increase in moisture content of seeds.
7. T. SRINIVAS, K. C. JAIN AND M. S. S. REDDY [Combining ability studies of medium and long duration pigeonpea [Cajanus cajan (L.) Millsp.]. Res. on Crops 1 (3) : 297-301 (2000). ICRISAT Asia Centre (IAC), Patancheru and A. P. Agricultural University, Hyderabad-500 030 (A. P.), India
Combining ability analysis of six medium to late duration pigeonpea lines was studied in a 6 x 3 line x tester mating design. The six lines were crossed with three testers and the resultant 18 hybrids, alongwith the parents, were evaluated in randomized block design and analyzed for their general and specific combining abilities with regards to seed yield, days to 50% flowering, plant height, number of primary branches, secondary branches, pods per plant, seeds per pod and 100-seed weight. A study of the variances for general and specific combining abilities revealed the predominance of non-additive gene action for all traits. The lines, ICP 7035 and ICP 11251, were found good combiners for seed yield and few component traits, while among the testers, ICP 8863 was found a good combiner for yield and majority of yield component characters studied. The hybrids of ICP 7035, ICP 7349 and ICP 8850 with ICP 8863 exhibited desirable sca effects for seed yield per plant and few component traits and hence may be advanced to isolate desirable/transgressive segregants in advance generations.
8. T. SRINIVAS, K. C. JAIN, M. V. REDDY AND M. S. S. REDDY [Heterosis for grain yield and its component characters in pigeonpea [Cajanus cajan (L.) Millsp.]. Res. on Crops 1 (3) : 302-306 (2000). ICRISAT Asia Centre (IAC), Patancheru and A. P. Agricultural University Hyderabad-500 030 (A. P.), India
Two male sterile lines viz., ICP MS288 and ICP MS3783, developed at ICRISAT Asia Centre were used in a line x tester mating design with 11 medium to late maturing pigeonpea genotypes. The resultant 22 hybrids alongwith 13 parents were evaluated in a replicated trial during kharif 1994. Heterosis was studied in the hybrids over mid and better parent values, in addition to standard cultivar(s), for yield and its component characters. The expression of heterosis was evident for yield per plant, pods per plant and number of secondary branches. Further, the heterosis for seed yield was observed to be due to increased number of pods per plant and plant height. Maximum heterosis was recorded in the medium-late x medium crosses followed by early x medium crosses. Crosses with ICP MS3783 line, in general, showed marked heterosis for seed yield and most of the yield component characters. The cross ICP MS3783 x LRG 30 was the best hybrid combination.
9. S. N. RAJAN, R. GOPI, B. M. SUJATHA AND R. PANNEERSELVAM [Bitertanol mediated salt stress amelioration in Vigna radiata seedlings]. Res. on Crops 1 (3) : 307-313 (2000). Division of Plant Physiology, Department of Botany, Annamalai University, Annamalainagar-608 002 (Tamil Nadu), India
Bitertanol is a triazole group of fungicide and has growth regulating properties in plants and ameliorates various kinds of stresses. Vigna radiata seeds were germinated on fluted filter paper and irrigated with distilled water, NaCl (60 mM), NaCl (60 mM) mixed with bitertanol (1 and 2 µM) and harvested on 8th day after sowing and used for the study. NaCl stress decreased the chlorophyll, sugar content and amylase activity, while bitertanol treatments increased them to a larger extent. The level of ATPase activity increased to a larger extent in the stressed seedlings and it was lowered by the bitertanol. Peroxidase activity was found to be inhibited by the NaCl stress and the bitertanol treatments increased it in all parts of the seedlings. Bitertanol ameliorated the deleterious effect of the NaCl stress by increasing the sugar content, a and b amylase activity and peroxidase activity.
10. SERENE MARAGATHAM ISAACS, S. JEBARAJ AND S. K. GANESH [Path analysis in blackgram [Vigna mungo (L.) Hepper]. Res. on Crops 1 (3) : 314-316 (2000). Department of Agricultural Botany Agricultural College and Research Institute, Madurai-625 104, India
Path analysis on 32 genotypes of blackgram revealed that number of seeds per pod, 100-seed weight, number of branches per plant, HI and pod length exerted high positive direct effect on grain yield. Number of pods per plant and seed protein content recorded high negative direct effect on yield but number of pods per plant had high indirect effect through plant height, number of branches per plant and number of seeds per pod. Due to positive and significant correlation of number of seeds per pod, number of branches per plant, 100-seed weight with grain yield and their positive direct effect these characters were observed to be the real components of grain yield.
11. C. BHATTACHARYA AND N. BHATTACHARYA [Inheritance of seed coat colour in Pisum]. Res. on Crops 1 (3) : 317-322 (2000)
The inheritance of seed coat colour of Pisum sativum L. and Pisum arvense L. was studied. The analysis has indicated that six genes (AABBCCDDKKRR) of which two (A and B) had inhibitory effect and two others (K and R) which are mutator in nature were involved. The mutator genes (K and R) had differential action on C and D in presence of the genes with inhibitory effect i. e. A and B. The two genes (A and B) which are responsible for the flower and the stipule base/leaf base colour in Pisum were also responsible for the seed coat colour and the other two genes C and D which are responsible for flower colour were also responsible for the seed coat colour. In order to make the behaviour of the genes clear genotypes have been suggested.
12. K. GOVINDAN, V. THIRUMURUGAN AND S. ARULCHELVAN [Response of soybean to growth regulators]. Res. on Crops 1 (3) : 323-325 (2000). Faculty of Agriculture & A. H., Gandhigram Rural University, Gandhigram-624 302 (Tamil Nadu), India
Soybean varieties viz., CO 1, CO 2, JS 335 and PK 472 were sprayed with growth regulators viz., cycocel (CCC), napthalene acetic acid (NAA) and gibberelic acid (GA) at 40 ppm concentration on 35th day after sowing. The results revealed that cycocel application reduced the plant height and dry matter production, whereas NAA and GA increased the growth characters. Yield attributes like number of pods and seeds plant-1, seeds pod-1 and 100-seed weight were significantly higher with application of growth regulators. Highest seed yields of 1510 and 1561 kg ha-1 were obtained with cycocel application among growth regulators and CO 1 among varieties, respectively.
13. A. K. CHAKRABORTY AND D. K. DAS [Interaction between boron and sulphur on different quality parameters of rape (Brassica campestris L.)]. Res. on Crops 1 (3) : 326-329 (2000). Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, Nadia (W. B.), India
The results showed that the different quality parameters like oil content and protein content were significantly and glucosinolate content non-significantly influenced by the separate and combined applications of boron and sulphur, being highest with combined applications in the B3S60 (B @ 3 and S @ 60 kg ha-1) treatment combination where oil, protein and glucosinolate content increased by 3.90, 4.29 and 0.41% over control, respectively. Boron and S content in seeds togetherly accounted for 91.8, 79.7 and 90.6% of the variability towards the improvement of soil, protein and glucosinolate content of rape, respectively.
14. A. JEYABAL, M. MURALIDHAR RAO, S. P. PALANIAPPAN AND S. CHELLIAH [Efficacy of foliar applied speciality fertilizers on growth and yield of sunflower]. Res. on Crops 1 (3) : 330-333 (2000). Nagarjuna Agricultural Research and Development Institute, C 15, Vikrampuri, Secunderabad-500 009 (A. P.), India
To evaluate the effect of two water soluble fertilizers, Polyfeed and Multi-K on sunflower, field experiments were conducted in two phases. In the first phase, different concentrations viz., 0.10, 0.25, 0.50 and 1.0% were tried as foliar spray. In the second phase, 0.5% concentration of speciality fertilizers was compared with di-ammonium phosphate (DAP) and muriate of potash (MOP). The study showed that foliar application of 0.5% Multi-K registered the highest grain yield of 1.90 t/ha, which was 12.4% higher than no spray treatment. Increase in concentration beyond 0.5% either of Multi-K or Polyfeed produced crop phytotoxicity. Foliar application of speciality fertilizers gave higher yield than foliar application of DAP or MOP.
15. KUSHAL RAJ AND G. S. SAHARAN [Effect of relative humidity on infection and development of sunflower head rot]. Res. on Crops 1 (3) : 334-336 (2000). Department of Plant pathology, CCS Haryana Agricultural University, Hisar-125 004, India
Head rot development caused by Rhizopus oryzae and Sclerotinia sclerotiorum was studied in vitro at three levels of relative humidities i. e. 40, 60 and 80% for different durations. Relative humidity of 80% was most congenial for head rot development due to both the pathogens.
16. R. K. SAMAIYA, K. C. SHUKLA AND U. K. TIWARI [Effect of foliar spray of PGRs and nutrient complex on productivity of safflower var. JSF-1]. Res. on Crops 1 (3) : 337-339 (2000). Department of Crop Physiology, JNKVV Regional Agricultural Research Station, Sagar-470 002 (M. P.), India
A field experiment was conducted to study the influence of foliar spray of some PGRs and nutrient complex on yield of safflower var. JSF-1. Foliar spray of sulphur based complex microsulf-20 enhanced major yield attributing characters viz., biomass, capsule weight, number of seeds, number of capsules and number of branches/plant. These yield attributing characters ultimately enhanced the yield significantly. The maximum yield 22 g/plant was recorded with foliar spray of microsulf-20 @ 2 ml/l at the time of flowering stage.
17. R. K. SAMAIYA, K. C. SHUKLA AND R. K. SARAF [Effect of growth retardant (CCC) on yield and yield attributes of safflower under rainfed conditions]. Res. on Crops 1 (3) : 340-343 (2000). Department of Crop Physiology, JNKVV Regional Agricultural Research Station, Sagar-470 002 (M. P.), India
An experiment was conducted to study the effect of foliar spray of growth retardant (CCC) on yield and yield attributing parameters of safflower under rainfed conditions at Regional Agricultural Research Station, Sagar (M. P.) during rabi 1996. Significant variations were observed in major yield attributing characters of safflower viz., number of capsules, capsule weight, number of seeds/plant and total biomass/plant. The highest seed yield of 18.0 g/plant was recorded under the treatment growth retardant (CCC) @ 5 ml/l sprayed at the time of flower bud initiation stage.
18. S. KUMARAN [Role of organic manure, fertilizer levels, split application of phosphorus and gypsum application on shelling percentage, harvest index, pod and oil yield of irrigated groundnut]. Res. on Crops 1 (3) : 344-347 (2000) Department of Agronomy, T. N. A. U. agricultural College and research institute, Killikulam-628 252 (T. N.) India
The field investigation was made to study the organic manure, fertilizer levels, split application of phosphorus and gypsum application on irrigated groundnut to maximize the pod yield, shelling percentage, harvest index and quality parameters during summer 1996 and rabi 1997. Fertilizer application at 34 : 17 : 54 kg NPK ha-1+12.5 t FYM ha-1 (basal)+17 kg P2O5 ha-1 (30 DAS)+400 kg gypsum ha-1 (40 DAS) registered significantly superior pod yield of 2015 and 1902 kg ha-1 during summer and rabi seasons, respectively. The recommended level of fertilizer (17 : 34 : 54 kg NPK ha-1) alone recorded lower pod yield. Higher shelling percentage, harvest index, oil yield and protein content were registered with application of 34 : 17 : 54 kg NPK ha-1+12.5 t FYM ha-1 (basal)+17 kgP2O5 ha-1 (30 DAS)+400 kg gypsum ha-1 (40 DAS), while higher oil content was noted with the application of 17 : 17 : 54 kg NPK ha-1+12.5 t FYM ha-1 (basal)+17 kg P2O5 ha-1 (30 DAS)+400 kg gypsum ha-1 (40 DAS). The recommended level of NPK alone recorded lower shelling percentage, harvest index, oil yield and protein content. W
19. R. KAVIMANI, K. ANNADURAI AND S. VIJAYABASKARAN [Effect of method of seeding and nutrient management on the yield of rainfed groundnut (Arachis hypogaea L.)]. Res. on Crops 1 (3) : 348-350 (2000). T. N. A. U. Agricultural Engineering College and Research Institute, Kumulur-621 712, Trichirappalli (Tamil Nadu), India
The present investigation was undertaken to study the effect of method of seeding and nutrient management on yield attributes and yield of rainfed groundnut. Pooled analysis of two seasons’ data revealed that pod yield (1664 kg ha-1) of groundnut was significantly higher in ridges and furrows method of sowing. Application of recommended dose of NPK combined with biocompost pressmud @ 2.5 t ha-1 recorded the maximum pod yield of 1702 kg ha-1. The yield improvement was due to increase in growth parameters and yield attributes. Groundnut crop raised in ridges and furrows applied with recommended dose of NPK combined with biocompost pressmud (M2N2) recorded the highest net return of Rs. 14,936 ha-1 and benefit : cost ratio of 2.22.
20. R. SENTHILKUMAR, V. IMAYAVARAMBAN, K. THANUNATHAN AND G. MANICKAM [Effect of intra-row spacings and different levels of nitrogen in combination with Azospirillum inoculation on growth and yield of sesamum]. Res. on Crops 1 (3) : 351-354 (2000). Department of Agronomy, Annamalai University, Annamalainagar (Tamil Nadu), India
Field investigations were conducted to evaluate the effect of intra-row spacings and nitrogen levels in combination with and without Azospirillum inoculation on growth and yield of sesamum. Though the growth and yield components in sesamum were significantly improved under the lesser population of 1,11,111 plants ha-1, the seed yield was significantly higher with 1,66,666 pants ha-1 with an increase of 23.3 and 21.4%, respectively, during summer and kharif seasons over 1,11,111 plants ha-1. Similarly, 25% extra dose of nitrogen than the recommended in combination with seed inoculation of Azospirillum significantly improved growth and yield attributes and resulted in increased seed yield of 967.7 and 918.6 kg ha-1, respectively, during summer and kharif seasons of 1999.
21. B. SAHADEVA REDDY, K. V. S. RAMI REDDY AND SHAIK MOHAMMAD [Rapid methods of leaf area estimation through linear measurements in natu tobacco]. Res. on Crops 1 (3) : 355-358 (2000). Regional Agricultural Research
Station, Nandyal-518 503 (A. P.), India
Empirical linear regression models were developed to estimate the leaf area of natu tobacco variety NG 73 through leaf length, width, the product of length and width and dry weight of leaves. The closest fit of the data was explained by the models -721.85+24.49 1 through leaf length, -157.40+45.66 w through maximum leaf width, -27.21+0.730 p through the product of length and width and 175.60+80.39 Dw through the leaf dry weight. The paired t-test for mean estimated leaf area by following any one of the four methods did not differ significantly from the actual leaf area measured through the electronic LICOR leaf area meter.
22. SEEMA BHUTANI, NEELAM R. YADAV, R. D. BHUTANI AND J. B. CHOWDHURY [Effect of explants and media on in vitro shoot multiplication in potato (Solanum tuberosum L.)]. Res. on Crops 1 (3) : 359-362 (2000).Plant Genetic Engineering Laboratory, Department of Genetics, CCS Haryana Agricultural University, Hisar-125 004, India
The establishment of in vitro cultures was attempted in five potato varieties i. e. Kufri Badshah, Kufri Chandramukhi, Kufri Jawahar, Kufri Sutlej and Kufri Bahar of potato (Solanum tuberosum L.). Pot grown eye explants and nodal explants from shoots were used in producing shoot cultures. Response of in vitro nodal explants was better for shoot multiplication over pot grown nodal explants. Multiple shoots formed in NI medium were highest in Kufri Badshah.
23. J. BHATTACHARYA, A. S. SABLE AND A. M. GAIKWAD [Effect of planting density on growth and yield of rose cv. Gladiator]. Res. on Crops 1 (3) : 363-366 (2000). Department of Horticulture, College of Agriculture, Nagpur, India
A field experiment was conducted to study the effect of planting density on growth and yield of rose in 1996-97 at the Department of Horticulture, College of Agriculture, Nagpur. The results indicated that when rose cv. Gladiator, grown at nine different levels of plant densities viz., 30 x 45 cm, 30 x 60 cm, 30 x 90 cm, 45 x 45 cm, 45 x 60 cm, 45 x 90 cm, 60 x 60 cm, 60 x 90 cm and 90 x 90 cm showed that high density attributed superior results in terms of flowering, stem length, plant height, less number of days required for first flowering, flowers per unit area and maximum yield of flowers per hectare. Lower plant density, however, proved to be superior in respect of spread of plants, number of flowers per plant, duration of flowering, bud length, bud diameter, number of petals per flower and vase life.
24. V. N. PATIL, P. S. CHAUHAN, R. S. SHIVANKAR, R. T. RAGHUVANSHI AND K. N. WANKHEDE [Effect of growth regulators on rooting of cuttings in two commercial varieties of grape (Vitis vinifera L.)]. Res. on Crops 1 (3) : 367-372 (2000). Department of Horticulture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444 104 (M. S.), India
The experiment was conducted at Main Horticulture Garden, Dr. P. D. K. V., Akola in order to study the improvement in rooting of grapevine cuttings of cultivar Tas-e-Ganesh and Kismis chorny treated with IBA, NAA and their combinations with different concentrations. The variety Kismis chorny showed maximum survival percentage than cv. Tas-e-Ganesh. Among these two varieties, almost all root characters and fresh and dry weight of roots were found to be non-significant. As regards to different concentrations of growth regulators, IBA 100 ppm followed by NAA 100 ppm gave better survival percentage and maximum number of primary roots than other treatments. The maximum length of longest root was found under the treatment of IBA 300 ppm and NAA 300 ppm. While maximum weight of fresh and dry roots was observed in IBA 100 ppm concentration at almost all the stages of planting. The combination of growth regulators (IBA+NAA) was found to be detrimental in almost all root characters and survival percentage of cuttings.
25. KULAPATI HIPPARAGI, H. T. NAGARAJU, B. S. BASAVARAJU, S. T. BHAIRAPPANAVAR AND S. JANGANDI [Effect of two levels of N, P and K on bunch characters in ratoon crop of banana germplasm]. Res. on Crops 1 (3) : 373-378 (2000). U. A. S. Agricultural Research Station, Kathalagere-577 219, India
The cultivar Robusta registered a maximum bunch yield of 106.31 t/ha with 125% of recommended N, P and K fertilizers when two suckers per hill were retained after shooting of the main crop. The study suggested that though Elakkibale yielded 46.89 t/ha, it gave the highest income of Rs. 245526.86 with two suckers per hill with 125% recommended N, P and K fertilizers followed by Robusta (Rs. 208584.86) which was recommended for cultivation for Bhadra Command Area.
26. RITU MAHAJANAND RAJINDER KAUR [Effect of size of shoot apical meristem on its survival and virus elimination in two strawberry cultivars Chandler and Fern]. Res. on Crops 1 (3) : 379-381 (2000). Department of Biotechnology, Dr. Y. S. Parmar University of Horticulture & Forestry, Nauni, Solan-173 230 (H. P.), India
The method of culturing meristems in vitro has been developed so as to recover virus free plants. The different sized meristems of two cultivars of strawberry i. e. Chandler and Fern were aseptically isolated and cultured on MS medium containing BAP and Kinetin. The complete plantlets thus obtained were tested for absence or presence of virus through biological indexing using Cucumis sativus as indicator plant.
27. S. A. ALI, S. C. CHAURASIA, R. K. JAISWAL AND ANIL PRATAP SINGH [Genetic divergence in coriander (Coriandrum sativum L.)]. Res. on Crops 1 (3) : 382-385 (2000). R. A. K. College of Agriculture, Sehore (M. P.), India
Twenty genotypes of coriander were grown for three consecutive seasons. The pooled data for yield and its attributes were subjected to study the genetic divergence using Mahalanobis D2 statistics. Twenty genotypes were classified into seven clusters. The cluster I contained the maximum 13 genotypes belonging to different geographical origins. Cluster II contained two genotypes. The clusters III, IV, V, VI and VII contained one genotype each. Genotypes (CS-193 and Tikamgarh local) were quite divergent and appeared promising for further improvement in cultivars.
28. A. CHAKRAVORTY AND K. CHANDRA [Effect of tillage operation on water retention and physiology of growth and development of field crops]. Res. on Crops 1 (3) : 386-389 (2000). Department of Agronomy, Assam Agricultural University Jorhat-13 (Assam), India
The experiment was conducted at the Instructional-cum-Research Farm of Assam Agricultural University, Jorhat during rabi seasons of 1992-93 and 1993-94 to study the effect of tillage practices on plant physiological properties. Among different tillage operations, harvesting by retaining two thirds of the rice plants in the field and ploughing in the inter-row spaces by mukhfolia plough (T2) as well as, ploughing and cross ploughing with mould board plough after harvesting half of the plant from the field (T3) were found to be more efficient than ploughing and cross ploughing by mould board plough without rice straw incorporation in the field (T1) and adoption of recommended practices (T4) for each crop. However, the relative growth rate was significantly higher in T2 followed by T3 over T1 and T4 treatments in niger, buck wheat and linseed. Significant improvement of relative leaf water content under T2 and T3 treatments was observed only at initial flowering in second year in niger and buck wheat. Total chlorophyll content of niger and buck wheat was also higher under T2 followed by T3 treatments at initial flowering stage in second year.
29. BIMLENDRA KUMARI [Eco-morphological variation in trees, pods and seeds of different provenances of Acacia nilotica L.]. Res. on Crops 1 (3) : 390-393 (2000). Department of Agroforestry, CCS Haryana Agricultural University, Hisar-125 004, India
The different provenances of Acacia nilotica showed a large number of variations in all the characters of trees, seeds and pods. These variations were prominent even in the progeny test, done at Hisar. The superior characters of trees, such as tree height (in Roorkee, followed by Chandigarh, Baharampur and Dharwad provenances), diameter (in Patna) and branch number (in Roorkee followed by Jalandhar and Chandigarh provenances), etc. were carried in the progeny. Similarly, provenances like Roorkee, Coimbatore, Patna and Jalandhar had larger seeds and larger pods were observed in Banaskantha, Roorkee, Patna, chandigarh and Bhopal provenances. Likewise the number of seeds per pod was maximum in Dharwad, Banaskantha and Roorkee. These variations in the trees and seed characters may be due to heterogeneity of physical environment or due to major influence of genetic basis. Hence, the provenances of Chandigarh, Patna, Baharampur, Jalandhar and Roorkee are best ones with all the genetically inherited
superior characters represented by the trees.
30. D. MUKHOPADHYAY AND D. K. DAS [Influence of organic matter, liming materials and zinc application on the availability of zinc in two acid soils of West Bengal]. Res. on Crops 1 (3) : 394-403 (2000). Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252 (West Bengal), India
A laboratory experiment was conducted to investigate the effect of organic matter, zinc and liming materials on the availability of DTPA extractable Zn+2 in some soils of West Bengal under submerged conditions. Significant antagonistic relationship between Zn+2 and calcite vis-a-vis Zn+2 and dolomite was observed, but the magnitude of such interaction effect on the availability of Zn+2 clearly pointed out the efficiency of liming materials used. Although organic matter showed a positive relationship on the availability of Zn+2 in both the soils but its effect was marked to some extent by the liming materials. A close response of the period of submergence on the availability of Zn+2 corresponding to the different treatment combinations was also accounted for the computation of the experimental results.
31. A. K. CHAKRABORTY AND D. K. DAS [Distribution of different fractions of sulphur in soils in relation to soil properties]. Res. on Crops 1 (3) : 404-409 (2000). Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252 (W. B.), India
Distribution of different fractions of sulphur in 110 soil samples collected from several districts of West Bengal belonging to 25 soil series was studied and at the same time an attempt was made to find out the relationships between fractions of sulphur and soil properties, and in between the fractions. The results showed that organic carbon, total nitrogen, pH, CEC and clay content togetherly accounted for 30% of the variability in the total content in soils. The SO4-S, organic S and non-S content in soils togetherly accounted for 99.6% of the variability in the total S content in soils, while 99.7% of the variability could be explained by combining the soil properties and fractions of S suggesting little influence of soil properties on the total S content in soils.
32. M. SELVARANI AND P. GOMATHINAYAGAM [Genetic diversity in foxtailmillet [Setaria italica (L.) Beau]. Res. on Crops 1 (3) : 410-412 (2000). Department of Millets, Tamil Nadu Agricultural University, Coimbatore-641 003 (T. N.), India
Fifty genotypes of foxtailmillet were studied for their genetic divergence by D2 analysis for a set of divergent characters like seed yield and four other metric traits. These genotypes were grouped into six clusters. Clusters V, VI and VII have been identified as genetically more divergent based on the inter-cluster values.
33. RAJESH KUMAR, R. K. NANWAL AND NARESH KUMAR [Effect of row spacing and seed rate in different varieties of moongbean (Vigna radiata) in relation to protein yield and quality parameters]. Res. on Crops 1 (3) : 413-415 (2000). Department of Agronomy, CCS Haryana Agricultural University, Hisar-125 004, India
Row spacing and seed rates were studied in different varieties of moongbean in sandy loam soils of Hisar during summer season of 1998. The results revealed that for summer cultivation cv. MH 85-111 should be preferred over T-44 and ML-131. Closer spacing of 20 cm harvested maximum protein production. Thirty kg seed rate was found adequate over 20 and 40 kg/ha.
34. V. M. KASTURE, P. S. CHAUHAN, V. N. PATIL, R. S. SHIVANKAR AND K. N. WANKHEDE [Effect of cuttings on the vegetative growth of Indian spinach (Beta vulgaris L.)]. Res. on Crops 1 (3) : 416-417 (2000). Department of Horticulture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444 104 (M. S.), India
The experiment was carried out to study the response of levels of cutting on the growth of green leaves of Indian spinach of the cultivars All Green and Pusa Jyoti. The variety Pusa Jyoti was significantly superior over All Green in respect of length of petiole and average leaf area per plant. While the variety All Green showed maximum number of leaves than variety Pusa Jyoti. However, height of plant was found to be similar in both the varieties. In case of treatments of levels of cuttings, control was found to be significantly superior over other treatments in respect of height of plant, number of leaves, length of petiole and average leaf area per plant.
35. S. Uma and J. V. NARAYANA GOWDA [Self-incompatibility studies in Polianthes tuberosa L.]. Res. on Crops 1 (3) : 418-420 (2000). Division of Horticulture, University of Agricultural Sciences, GKVK, Bangalore-65, India
Pollination studies on tuberose (Polianthes tuberosa L.) revealed self-incompatibility in single with no fruit set and 63.78% fruit set on cross pollinating with variegated cultivar. Variegated is a both male and female fertile variety with sufficient pollen production and recording a seed set of 12.13 and 28.84% when self and cross pollinated. But seeds obtained after cross pollination with variegated as female parent recorded lower seed viability and rate of seed germination suggesting lower fertility and seedling vigour.
36. V. P. SINGH, B. P. SINGH AND R. S. HOODA [Biological nitrogen fixation_a note on Rhizobium infection process and root nodule development in legumes]. Res. on Crops 1 (3) : 421-425 (2000). Department of Agronomy, CCS Haryana Agricultural University, Hisar-125 004, India
This article discusses legume root nodules development, host plant (legumes)-bacteria specificity, Rhizobium infection process, factors affecting nodules development and nitrogen returns to the soil and other crops. The main steps involved in the process of Rhizobium infection like colonization of rhizosphere, attachment of Rhizobium bacteria with root hairs, penetration of infection thread into cortex cells, infection thread formation and development of nodules are shown schematically for better understanding of the process. The material presented in this article will be useful for teachers, students, scientists, extension workers and anyone who is interested in developing a better understanding of biological nitrogen fixation in legumes in general and Rhizobium infection process and nodule development in legumes in particular.