Effect of Sources of Nutrients, Their Dose and Mode of Application On Growth & Yield of Rice (Oryza Sativa L.) and Its Residual Effect on Wheat (Triticum Aestivum L.)

Abstract

A field experiment was conducted at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, Uttar Pradesh during 2022-23 & 2023-24 with a view to compare the growth, yield and economics through the application of nutrients through different sources, doses and mode of application in Rice and its residual effect on yield of wheat. The experiment comprised of 12 treatments and 3 replications analysed in Randomised Block Design. Treatments comprised of T1 (Control), T2 (100% NPK), T3 (100% NPK + Zn 5 kg ha-1), T4 (100 % NPK + Bio stimulants), T5 (75 % NPK + Bio stimulants), T6 (100% NPK + Nano Zn spray at 40 DAT), T7 (100% NPK Consortia), T8 (75 % NPK + NPK Consortia), T9 (75% NPK+ Nano N spray at 40 DAT), T10 (75% NPK+ Nano N spray at 40 DAT+ Nano Zn spray at 40 DAT), T11 (75% NPK+ NPK (18:18:18) 0.5% spray at 40 DAT +Bio-stimulants) and T12 (75% NPK+ Zn 5 kg ha-1 + Bio-stimulants + Nano N + Nano Zn spray at 40 DAT). Paddy variety Pusa Basmati 1637 and Wheat variety DBW-222 was grown during both the years of experimental study. The texture of the soil was sandy loam, low in available nitrogen (222.7 kg ha-1) and organic carbon (4.9 g kg-1), medium in available phosphorous (12.85 kg ha-1) and potassium (235.75 kg ha-1) and slightly alkaline in reaction (pH 7.7). Results revealed that among the various sources of nutrients, doses and mode of application during the years 2022 and 2023, treatment T12 (75% NPK+ Zn 5 kg ha-1 + Bio-stimulants + Nano N + Nano Zn spray at 40 DAT) had significant effect on growth, yield attributes, yield and Nutrient Use efficiecncy of rice. The highest value of Net returns ( 67488 & 79484 ha-1) and B.C. Ratio (2.6 & 2.7) were obtained in T12. Application of nutrients from different sources, their dose and mode of application in rice had significant effect on yield of wheat where recommended dose of nutrients were applied in wheat. Significantly higher yield was obtained in T12 followed by T3 that were statistically at par with each other during both the years.