PATEL, K. P.SINGH, NAOREM JANAKI2018-04-062018-04-062002http://krishikosh.egranth.ac.in/handle/1/5810042994Ihe present investigation was undertaken to suggest a better nutrient management practice to the farmers of SSPA rehabilitated in Sankhcda taluka of Vadodara district. The soils of the area are clayey loam (Typic Chromustert) in texture, slightly alkaline having low level of soluble salts and medium in available nutrients. The treatments of organics viz., FYM (10 t ha-1) and pressmud (5 t ha-1) of sulphitation process were integrated with inorganic fcrliiizcrs application (75% and 100% of recommended dose of N and P) along with supplementation of nutrients viz., S and Zn (as soil application; with gypsum @ 150 kg ha-1 and ZnS04 @ 25 kg ha-1, respectively) and Fe (as foliar application @ 0.25% neutralized FeS04) based on soil test values; besides, a treatment of foliar spray for multimicronutricnt (Grade-I) was also kept. The treatments were imposed on soils of pre-identified field of SSPA site (Golagamadi) under pot house study in a maize var. GM-4 (Zea mays L.)- wheat var. GW-496 (Triticum aestivum L.) sequence. The organics (FYM and pressmud) were applied to kharif maize only and their residual effect was studied on rabi wheat. The treatments effect was also tested under incubation study to confirm their efficacy without crop growing condition to substantiate the results of pot house study. The findings of the present investigation are as under. The application of either FYM or pressmud to maize in kharif only was found beneficial in increasing yields of both maize as well as wheat in rabi. The maximum improvement in maize yield could be obtained by 63 per cent with application of pressmud @ 5 t ha-1 irrespective of the treatments of fertilizers application. The findings further suggested that the application of nutrients like S and Zn (as soil application; gypsum @ 150 kg ha-1 and ZnSO4 @ 25 kg ha-1, respectively) and Fe (as foliar application @ 0.25% neutralized FeS04) along with 75% of recommended fertilizer application of NP on soils having marginal to deficient status of these nutrients could produce comparable maize yield with 100%NP; and the increase in the yield was higher by 33 per cent over control. However, the increases in maize dry matter yield due to all fertility treatments (except treatment with foliar application of multimicronutrients) irrespective of organics were of similar magnitude over no fertilizer application. The multimicronutrients spray to maize was not found advantageous. With the inclusion of sulphur and micronutrient supplementation along with FYM and fertilizer application at recommended level of NP (@ 100%) was found more beneficial in increasing maize yield. However, the overall effect of pressmud application on maize yield was found better than with FYM application. The benefits of residual effect of FYM and pressmud was noticed on succeeding wheat; and the overall improvement in wheat giain yield due to residual effect of FYM wns higher by 43 per cent over prcssmud. The recommended fertilizer application alongwith multimicronutrients spray produced more than double of wheat grain yield over control. The yield improvement due to 100% NP application under the residual effect of S and Zn could also produce 79% higher wheat grain yield over control which indicated beneficial effect of Zn and S supplementation to maize. Thus, the overall findings suggested the importance of integrated nutrient management and balanced fertilization for better maintenance of fertility and crop productivity of the soil. The increase in maize growth and thereby higher DMY ultimately caused more removal of major (NP), secondary (S) and micronutrients (Fe, Zn, Mn and Cu) by maize as well as wheat due to treatments of FYM and pressmud in association with 100% NP and supplementation of S and micronutrients. In general, pressmud enhanced availability of most of the nutrients except P205 after maize, whereas the residual effect of FYM was superior over pressmud in this respect after wheat. The FYM application caused slightly more depression on availability of Fe, Zn and Cu contents in the soil compared to pressmud application as a direct effect after maize. Similarly, the fertilizers application enhanced soil status of available nitrogen, sulphur, zinc and copper while available phosphorus, potassium and manganese remained unaltered. The results of incubation study, in general, confirmed behaviour of the treatments.enAgricultural Chemistry and Soil ScienceA StudyThesis