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NUTRIENT AND WEED MANAGEMENT IN BROADCAST BIASI SYSTEM FOR OPTIMIZING RICE (Oryza sativa L.) YIELD

KrishiKosh

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Title NUTRIENT AND WEED MANAGEMENT IN BROADCAST BIASI SYSTEM FOR OPTIMIZING RICE (Oryza sativa L.) YIELD
M.Sc. Thesis
 
Creator Baghel, Preetam
 
Contributor Savu, R.M.
 
Subject ##Unable to generate tags preetam baghel , Nutrient management, Weed Management, Brown Manuring
 
Description The present investigation entitled “Nutrient and weed management in broadcast biasi system for optimizing Rice (Oryza sativa L.) yield” was carried out at the Research cum Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur during kharif season of 2015. The soil of experimental field was sandy loam in texture (Inceptisols), neutral in pH and has 0.50 % organic carbon, low nitrogen, medium phosphorus and high potassium content. The experiment was laid out in split-split plot design with three P and K application as main plot, two brown manuring as sub plot and four weed management practices as sub-sub plot with three replications. The
treatment consisted of three P and K application for study viz. N1- full P and K at 30 – 35 DAS, N2-50 % P and K at sowing and 50 % P and K at 30 – 35 DAS, and N3- full P and K at sowing in main plots, B1- no manuring and B2- brown manuring in sub plot and W1- biasi operation followed by hand weeding, W2- pre emergence herbicide pyrazosulfuron 20 g ha-1 fb biasi fb hand weeding, W3- pre emergence herbicide pyrazosulfuron 20 g ha-1 fb post emergence herbicide bispyribac-Na 20 g ha-1 and W4- early post emergence azimsulfuron 35 g ha-1 fb late post emergence bispyribac- Na 20 g ha-1 in sub-sub plots. Results revealed that higher, growth parameters viz., dry matter accumulation, crop growth rate, plant height at harvest and yield attributing traits viz., number of tillers, number of effective tillers,panicle length, number of grains panicle-1, filled grains panicle-1, panicle weight, test weight and grain yield registered under 50 % P and K at sowing and 50 % P and K at 30 – 35 DAS (N2), brown manuring (B2) as sub-plot and pre-emergence herbicide pyrazosulfuron 20 g ha-1 fb biasi fb hand weeding (W2). Regardings weed management, minimum weed density and dry matter at harvest recorded under 50 % P and K at sowing and 50 % P and K at 30 – 35 DAS (N2), brown manuring (B2) and pre-emergence herbicide pyrazosulfuron 20 g ha-1 fb biasi fb hand weeding (W2). Interaction among treatment 50 % P and K at sowing and 50 % P and K at 30 – 35 DAS (N2), brown manuring (B2) and pre emergence herbicide pyrazosulfuron 20 g ha-1 fb biasi fb hand weeding (W2) produced significantly higher grain yield. Maximum gross return (Rs. 81978 ha-1), net return (Rs. 54330 ha-1) and B: C ratio (2.96 ) was obtained under treatment recommended P and K application, 50 % P and K at sowing and 50 % P and K at 30–35 DAS (N2). Concerning to brown manuring treatment, application of brown manuring (B2) gave maximum gross return (Rs. 78372 ha-1) and net return (Rs. 48197 ha-1) in comparison to no manuring (B1). While maximum benefit cost ratio (2.84) was recorded under no manuring (B1). As regards to weed management, maximum gross return (Rs. 81645 ha-1) and net return (Rs. 53168 ha-1) were recorded under treatment pre-emergence herbicide pyrazosulfuron 20 g ha-1 fb biasi fb hand weeding (W2) while maximum B: C ratio (2.87) was recorded under treatment pre-emergence herbicide pyrazosulfuron 20 g ha-1 fb post emergence herbicide bispyribac-Na 20 g ha-1 (W3).
 
Date 2016-08-01T13:00:35Z
2016-08-01T13:00:35Z
2016
 
Type Thesis
 
Identifier 135p.
http://krishikosh.egranth.ac.in/handle/1/70396
 
Language en
 
Format application/pdf
 
Publisher Indirra Gandhi Krishi Vishwavidyalaya Raipur