The Effect of Integrated Nutrient Management on Growth, Yield Attributes and Yield of Transplanted Rice under Irrigated Condition (Oryza sativa L.)

Abstract

The present investigation was carried out in kharif season 2022-23 at Agronomy Research Farm of Chandra Bhanu Gupta Krishi Snatakottar Mahavidyalaya, Bakshi ka Talab, Lucknow (U.P). The 8 treatments comprised of T1- RDF(IF), T2- 100% RDF+25 kg ha-1 ZnSO4 (B), T3-100% RDF+2 foliar spray of ZnSO4, T4- RDF+50 kg ha-1  FeSO4 (B),T5-100% RDF+ZnSO4 25 kg ha-1  (B) + FeSO4 @ 50 kg ha-1 (B), T6- 75% RDF (IF)+25% RDN (FYM), T7- 50% RDF (IF)+50% RDN (FYM),T8-100% RDF through FYM were laid out in Randomized Block Design (RBD). The soil was silty-loam texture with slightly alkaline pH 8.1, organic carbon 0.70 %, available nitrogen 270.00 kg ha-1, available phosphorus 27.0 kg ha-1, and available potash 262.0 kg ha-1 during 2022-2023. The values of growth contributing characters viz., plant height (cm), number of tillers per m2 (439.73), dry matter accumulation (g m -2 ) (829.62), at harvest and significantly highest (6.33) leaf area index (LAI) was recorded under 100% RDF + 2 foliar spray of ZnSO4 and yield attributes and yield  like number of effective tillers per m-2 (200.66), panicles weight (g)(4.51), length of panicle (cm) (28.33), number of grains panicle-1 (175.33), test weight (g) (29.10), grain yield (47.85), straw yield (q ha-1 ) (64.75) of rice were significantly higher under T3- 100% RDF + 2 foliar spray of ZnSO4 compared to other treatment. The nitrogen content (%), and its uptake (kg ha-1), and protein content (%), and its production (kg ha-1) in grain and straw was significantly higher under T3-100% RDF + 2 foliar spray of ZnSO4. The Fe and Zn content (mg kg-1) and its uptake (kg ha-1) in grain and straw was higher under T3-100% RDF + 2 foliar spray of ZnSO4. Economics analysis viz gross return (123514), net return (84107) and benefit cost ratio (2.13) was recorded highest with T3-100% RDF + 2 foliar spray of ZnSO4 while lowest with T8- 100% RDF through FYM. Thus for obtaining better yield and profit apply T3-100% RDF + 2 foliar spray of ZnSO4.