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Optimization of fertilizer nitrogen at varying levels of life-saving irrigation water for mustard (Brassica juncea) under semi-arid inceptisols.

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Title Optimization of fertilizer nitrogen at varying levels of life-saving irrigation water for mustard (Brassica juncea) under semi-arid inceptisols.
Optimization of fertilizer nitrogen at varying levels of life-saving irrigation water for mustard (Brassica juncea) under semi-arid inceptisols.
 
Creator ICAR_CRIDA
 
Subject Optimization, experiments, irrigation water, Indian mustard.
 
Description Not Available
Field experiments were conducted with Indian mustard [Brassica juncea (L.) Czernj & Cosson] during winter (rabi) seasons of 2003, 2004 and 2005 under semi-arid Inceptisols at Agra. The treatments were a complete factorial of 4 levels of N, viz 0, 40, 80 and 120 kg/ha applied at sowing and 4 levels of irrigation provided at different stages (control, 8 cm depth at 50% flowering, 8 cm depth at 50% siliqua formation) and 4 cm depth at 50% flowering + 4 cm depth at 50% siliqua formation. Irrigation and fertilizer N alone and in combination caused significant effect on mustard yield in each season and also pooled over 3 seasons. A maximum yield response of 800 kg/ha with a response ratio of 10 kg/kg fertilizer application were attained with an application of 80 kg N/ha and 4 cm depth at 50% flowering + 4 cm depth at 50% siliqua formation stages. The mustard yield was significantly and positively correlated with fertilizer N applied as basal and irrigation provided at 50% flowering and 50% siliqua formation stages in all the 3 seasons. A regression model of yield was calibrated as a function of fertilizer N and irrigation gave a significant predictability of 0.96 and an expected yield in the range of 1 263 kg/ha under control to 2 757 kg/ha under basal application of 80 kg N/ha together with an irrigation of 4 cm depth at 50% flowering + 4 cm depth at 50% siliqua formation stages. Among different treatment combinations, basal application of 80 kg N/ha together with irrigation of 4 cm depth at 50% flowering + 4 cm depth at 50% siliqua formation stage had a maximum sustainable yield index of 95.2% compared to a minimum of 49.1% under the control. Using regression model of yield, the derived optimum fertilizer N ranged from 72 to 78 kg/ha for attaining maximum yield and 68 to 73 kg/ha for attaining economic yield of mustard at a varying level of irrigation of 0 to 8 cm depth provided at 50% flowering and 50% siliqua formation stages in the study.
Not Available
 
Date 2020-02-25T05:44:51Z
2020-02-25T05:44:51Z
2008-01-01
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32489
 
Language English
 
Relation Not Available;
 
Publisher Nema, A.K., Maruthi Sankar, G.R.