Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810031107
Authors: MAHENDRA CHOUDHARY
Advisor: Dr. P. K. CHOVATIA
Title: INTEGRATED WEED MANAGEMENT IN SUMMER GROUNDNUT (Arachis hypogaea L.)
Publisher: JAU,JUNAGADH
Language: en
Type: Thesis
Pages: 161
Agrotags: AGRONOMY
Abstract: A field experiment entitled "Integrated Weed Management in Summer Groundnut (Arachis hypogaea L.)." was carried out under clayey soil during summer 2015 at the Instructional Farm, Department of Agronomy, College of Agriculture JAU, Junagadh. The experiment comprising 10 treatments was laid out in randomized block design with three replications. The results revealed that significantly higher values of growth parameters viz., plant height, dry matter accumulation per plant, number of total and effective nodules/plant and leaf SPAD value, yield attributes and yield viz., number and weight of mature pods per plant, shelling (%), 100-kernels weight, pod, haulm, biological, and kernel yields, quality parameters viz., protein, oil content and oil yield and N, P and K content and uptake by pods and haulm were recorded under weed free treatment. HW twice at 20 and 45 DAS (T2), quizalofop-p-ethyl @ 0.04 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T9) and oxyfluorfen @ 0.24 kg ha-1 as pre-emergence fb imazethapyr @ 0.07 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T10) were found equally effective in recording higher values of growth parameters, yield attributes and yield, quality parameters and N, P and K content and uptake by pods and haulm than rest of the treatments. The minimum loss of nutrients by weeds was under weed free (T3) followed by HW twice at 20 and 45 DAS (T2), quizalofop-p-ethyl @ 0.04 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T9) and oxyfluorfen @ 0.24 kg ha-1 as pre-emergence fb imazethapyr @ 0.07 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T10). Besides, weed free (T3) condition, HW twice at 20 and 45 DAS (T2), quizalofop-p-ethyl @ 0.04 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T9) and oxyfluorfen @ 0.24 kg ha-1 as pre-emergence fb imazethapyr @ 0.07 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T10) were found more effective in reducing the weed population up to harvest and resulted in less dry weight of weeds, lower weed index and higher weed control efficiency. The highest net returns were realized under weed free (T3), followed by quizalofop-p-ethyl @ 0.04 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T9) and oxyfluorfen @ 0.24 kg ha-1 as pre-emergence fb imazethapyr @ 0.07 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T10). While, quizalofop-p-ethyl @ 0.04 kg ha-1 as post-emergence at 20 DAS + 1 HW at 45 DAS (T9) realized highest B: C ratio (2.44), followed by weed free (T3).
Subject: Agronomy
Theme: INTEGRATED WEED MANAGEMENT IN SUMMER GROUNDNUT (Arachis hypogaea L.)
These Type: M.Sc
Issue Date: 2016-07
Appears in Collections:Thesis

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