Patel, D.D.Patel, Rinku Devchandbhai2018-06-182018-06-182009-07RINKU DEVCHANDBHAI PATEL_53938http://krishikosh.egranth.ac.in/handle/1/5810053821A field experiment was conducted during summer season of 2011 at the College Farm, Navsari Agricultural University , Navsari to study the "Response of different cultivars o f greengram (Vigna radiata L.) to integrated nutrient management under south Gujarat condition". The soil of the experimental field was clayey in texture having medium to poor drainage, low in available nitrogen. medium in available phosphorus and fairly rich in available potas sium and sulphur with 7.8 pH. Total twenty treatment combinations co ns isting of two varieties viz., Meha (Vil and GM 3 (V2), three levels of inorganic fertilizer (F,: 100 per cent RDF i.e. 20-40-00 kg NPK/ha, F2 : 75 per cent RDF and F 3: 50 per cent RDF) and three treatments of biofertilizers (B,: rhizobium seed inoculation, B2 : Phosphate solubilizing bacteria (PSB) seed inoculation and B3: rhizobium + PSB seed inoculation) combine with two additional treatments (AT ,_ Meha with 100% RDF only) and AT 2 (OM 3 with 100% RDF only) were evaluated in factorial randomized block design with factorial concept in three replications. Almost all the growth and yield attributes such as plant height, number of branches, dry matter accumulation, number of root nodules, pods per plant, seeds per pod, test weight per plant were significantly influenced by levels of inorganic fertilizer. Significantly higher values of all the above parameters were recorded with 100% RDF (20-40-00 kg NPK kg/hal which were found superior to rest of the treatments except F2 (75% RDF). Consequently, plots receiving 100% RDF (F ,) recorded significantly higher seed (1365 kg/hal and stover (3491 kg/hal yields as compared to treatments F, (75% RDF) and F3 (50% RDF). Remarkable improvement in quality , nutrient content as well as their uptake was also observed with the treatment of 100 and 75% RDF. Nutrient status of soil after harvest of crop was also improved with the treatment of 100% and 75% RDF. From economic point of view, the maximum net realization of ( 63280/ha and ( 58237/ha with BCR of 5.29 and 5.00 were achieved with 100 and 75% RDF, respectively, in greengram. Various treatments of biofertilizers also produced significant variation ill growth as well as yield attributes. The crop Sown with dual inoculation of rhizobium and PSB showed significant improvement in plant height, number of branches, dry matter accumulation, number of seeds per pod, test wei ght but - remained at par to PSB inoculation. However, significantly the highest number of pods per plant (18.84), seed yield (1345 kg/hal and stover yield (3545 kg/hal were obtained in the treatment B, as compared to treatments B\ (rhizobium) and B2 (PSB). Considerable improvement in quality, nutrient content as well as their uptake was also noticed under dual inoculation treatment. Nutrient status of soil after the harvest of crop was also appreciably increased by inoculating the seed either by rhizobium and PSB alone or in combination. With regard to • economics. dual inoculation of rhizobium and PSB achieved higher net realization of \ 63320/ha with BeR of 5.75 as compared to biofertilizer treatment alone. With respect to interaction effect, it is interesting to note that the seed yield recorded with 75 per cent RDF + dual inoculation o f rhizobium and PSB or PSB alone were found as good as the yield obtained with 100 per cent RDF + dual inoculation of rhizobium and PSB, indicates 25 per cent saving of inorganic fertilizer. On the basis of results obtained in the present investigation, following conclusions could be made. • Meha is better variety of greengram for the south Gujarat condition in summer season over cv. GM 3 . • For getting more remunerative production of greengram, crop • sho uld be fertilized with 100% RDF (20-40-0 kg NPK/ha). • Seed inoculation with rhizobium and PSB is more profitable for greengram as compared to inoculated with either rhizobium or PSB alone . • Compared to treatment combinations as well as control, F ,B, (100 % RDF with dual seed inoculation of rhizobium and PSB) found more productive and economical which closely followed by the treatment combination of F,B, (75% RDF with dual inoculation of rhizobium and PSB) and F ,B, (75% RDF with seed inoculation with PSB) indicating 25% saving of inorganic fertilizer through use of dual inoculation of rhizobium and PSB or PSB alone.ennullThesis