Evaluation of Planting Techniques and Fertility Levels on Rice (Oryza Sativa L.) Productivity, Nutrient Uptake and Water Use Efficiency

Abstract

The. investigation e~t~tled UEvaluation of planting techniques and fertility levels on rice (Oryza satzva L.) Productzvzty, nutrient uptake and water use efficiency" was carried out at the Crop Research ~entre o~ Sardar Vallabhbhai Patel University of Agriculture & Technology, ~ee~t, U.P. d~tng Kharifseason of2014. The experiment consisting of four Planting techniques tn matn ~lots vtz; T1 transplanted rice after reduced tillage {R1TPR), T2 transplanted rice on narrow ~a1sed beds (N Bed TPR), T3 transplanted rice on wide raised beds (W Bed TPR) and T4 conventional puddled transplanted rice (CTTPR). And eight fertility levels in sub plots viz; Fo Control (no N-P- K- Zn fertilizers), F1 120- 60- 40 NPK + 25 kg Zn ha- 1 , F2 120- 60- 40 NPK + 0.5 % Zn solution in rice nursery at root dipping, F3 120- 60- 40 NPK + 0.5 % Zn solution foliar application at 15 DAT, F4 120- 60-40 NPK + 0.5% Zn solution foliar application at 30 DAT, F5 120- 60- 40 NPK + 0.5 % Zn solution foliar application at 45 DA T, F 6 120- 60- 40 NPK + 0.5 % Zn solution foliar application at 60 DAT and F7 120- 60- 40 NPK + 0.5 % Zn solution foliar application at 75 DAT was laid out in a split plot design with three replications. The plant height, dry matter accumulation, number of tillers, root weight and root length were increased with planting technique conventional puddeld transplanted rice. Among the yield attributes viz; productive tillers, panicle length, grains panicle -I and I 000 grain weight, increased significantly by (7.77%, 12.17%, 6.32% and 6.71%) in wide raised beds respectively, The improvement in grain yield 29.16% and 26.60 % on conventional tillage transplanted rice and wide raised beds, respectively over narrow raised beds. The wide raised beds increased the water use efficiency by 20.75%. The infiltration rate was 52.88% higher under transplanted rice on narrow raised beds over transplanted rice on wide raised beds. Nitrogen, phosphorus, potassium and zinc content were higher in transplanted rice on wide raised beds in all growth stages respectively. Transplanted rice on wide raised beds increased the agronomic efficiency 26.8'ro, r~covery efficiency 32.9%. The number of galls planf1 root was statistically at par among different planting techniques but transplanted rice on narrow raised beds having highest galls planf1 .Soil physical properties of basmati rice as infiltration rate and mean weight diameter was higher in transplanted rice on wide raised beds as compared to other planting techniques. The highest net profit (Rs 50652 ha- 1 and Rs with B:C ratio of 2.20 was recorded in T3. Plant height, dry matter accumulation and number of tillers were higher in F I · Ro?t weight,. The yield attributes viz; productive tillers, panicle length .. grains panicle-1 and I 000 g~1n weight, increased significantly (7.41%, 12.23%, 2.38% and 25.5%) in 120-60-40 NPK + foh~ application of Zn @ 0.5% at 15 DA T plots, respectively. The grain yield increased 19.82% an 120-60-40 NPK + foliar application of Zn @ 0.5% at 15 DA T than the rest of the treatments. Nitrogen, phosphorus and potassium content were higher in fertility level~ of 120-60-40 NPK + foliar application of Zn @ 0.5% at 15 DA T in all stages of ~lant gro~h. ~1nc content and uptake was maximum in F at 30 DA T and in F 5 at 60 DA T and 1t was hagher an treatment 120-60-40 NPK +foliar applic~tion ofZn @ 0.5% at 75 OAT at 90 OAT and harves~ by grain and straw.