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    ThesisItemOpen Access
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    ThesisItemOpen Access
    Integration of nutrient inputs on rice yield, nutrients uptake and availability in a vertisol
    (JNKVV, 2014) Patel, Shriram; Khamparia, N.K.
    ABSTACT A field experiment entitled “Integration of nutrient inputs on rice yield, nutrient uptake and availability in a Vertisol” was conducted during Kharif 2013 at Research Farm of department of Agronomy under, All India Coordinated Research Project on Permanent Plot Experiments, Departme nt of Agronomy, JNKVV, Jabalpur, Madhya Pradesh to study the yield, major nutrients (N,P,K and S) contents and their uptake at different growth stages of rice and correlation between major nutrients contents with yield of rice crop. The study was conducted with 11 treatments of different fertility levels i.e. (T1 - control, T2 -50% NPK, T3 -75% NPK, T4 -100% NPK, T5 -50% NPK+50% N as farm yard manure, T6-75% NPK+25% N as farm yard manure, T7-50% NPK+50% N as wheat straw, T8–75% NPK+25% N as wheat straw, T9–50% NPK+50% N as green manure, T10- 75% NPK+25% N as green manure and T11- farmers practices) in a RBD with 4 replications. These treatments were applied to rice crop in Kharif season. Urea, Single Super Phosphate (SSP) and Muriate of Potash (MOP), were used as a same for NPK, respectively, FYM, wheat straw and green manure were used as organic sources for N application. Application of 50, 75 and 100% NPK and 50% NPK + 50% N through GM/WS/FYM and 75% NPK + 25% N through GM/FYM/WS significantly increased the dry matter yield at 30, 60 and 90 DAT and grain and straw yield, N, P, K and S content and uptake over control. The maximum dry matter yield with 50% NPK + 50% N was observed at all growth stages and grain and straw yield which was found significantly superior to 50% or 75% NPK at all the growth stages, 75% NPK + 25% N as FYM/WS/GM at 60 and 90 DAT and 75% NPK + 25% N as WS for grain and straw yield. The maximum N content and uptake at all growth stages and grain and straw was observed with 50% NPK + 50% N as GM which was found significantly superior to 50, 75 and 100% NPK, 75% NPK + 25% N as FYM/WS/GM at 30 DAT, grain and straw. The maximum P and S in plant at different growth stages and in grain and straw was also observed with 50% NPK + 50% N as FY M which was found significantly superior to 50% NPK + 50% N through WS/GM and 100% NPK for P content at 30DAT and grain respectively. While the S content with 50% NPK + 50% N was found significantly superior to 50 or 75% NPK, 50% NPK+50% N as WS/GM, 75% N PK+25% N as WS/GM at all growth stages and grain and straw 75% NPK + 25% N as WS at 90 DAT. While the maximum K content at all growth stages and grain straw was observed with 50% NPK + 50% N as WS which was found significantly superior to 50, 75 and 100% NPK, 50% NPK + 50% N as FYM/GM, 75% NPK + 25% N as FYM/GM, at 30, 90 DAT, grain and straw except with 50% NPK + 50% N as FYM at 90 DAT. The maximum P,K,S uptake by rice and after harvest OC and available N and P, were also observed with 50% NPK+50% N as GM except S uptake by grain and straw with 50% NPK+50% N as GM. The P uptake was found significantly superior to 50 or 75% NPK, 75% NPK+25% N as FYM/WS/GM and 50% NPK+50% N as WS at all growth stages and grain and straw except with 75% NPK+25% N as FYM/WS and 50% NPK+50% N as WS for P uptake by grain. The maximum K uptake with 50% NPK+50% N as GM was also found significantly superior to 50 or 75% NPK 75% NPK+25% N as FYM/WS/GM and 50% NPK+50% N as WS except, 50% NPK+50% N as WS for K uptake by grain and straw. The S uptake with 50% NPK+50% N as FYM at different growth stage was found significantly over 50 or 75% NPK, 75% NPK+25% N as FYM/WS/GM and 50% NPK+50% N as WS. While the maximum uptake by grain and straw was found significantly superior to 50 or 7 5% NPK, 50% NPK+50% N as WS/GM and 75% NPK+25% as WS/GM. The OC at 50% NPK+50% N as GM was found significantly superior to all the treatments except 50% NPK+50% N as FYM and 75% NPK+25% N as GM. Available N and P was found significantly superior to 50 or 7 5% NPK, 75% NPK+25% N as FYM/WS in both the cases as well as over 50% NPK+50% N WS and 75% NPK+25% N as GM for Available N. While the maximum available K was observed with 50% NPK+50% N through WS which was found significantly superior to 50 or 75% NPK, 75 % NPK +25% N as FYM. While the maximum available S was observed with 50% NPK+50% N as FYM which was found significantly superior to all the treatment except 50% NPK+50% N as GM.It may be conducted that the application of 50% NPK + 50% N through GM gave the maximum rice grain yield (2789 kg ha- 1) and straw yield (4561.75 kg ha-1) which gave significantly higher grain and straw yield than 75% NPK or 75%NPK + 25% N as WS, N, K and S content in grain and straw and NPK and S uptake by rice. The treatment also improved OC content and available nutrient in soil. Hence, 50% NPK and 50% N through green manure/FYM.
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    ThesisItemOpen Access
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    ThesisItemOpen Access