Effect of weed management on productivity of transplanted Rice (Oryza sativa L.)
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Date
2021-07
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ANDUAT, Kumarganj, Ayodhya
Abstract
An experiment entitled “Effect of weed management on productivity of
transplanted Rice (Oryza sativa L.)” a field experiment was conducted at
Agronomy Research Farm of Acharya Narendra Deva University of Agriculture and
Technology, Kumarganj, Ayodhya (Utter Pradesh) during Kharif 2020. The
experiment was laid out in Randomized Block design with four replications. The
treatment consisted of weed management practices (T₁- Pretilachlor @ 1.25 kg ha-1
(PE), T₂- Bispyribac sodium @ 25g a.i. ha-1 (POE), T3- Pretilachlor @ 1.25 kg ha-1
(PE) + Bispyribac Sodium @ 25 g a.i. ha-1 (POE), T4:- Hand weeding (20 and 40
DAT), T5- Weed Free (Till mature), T6- Weedy Check) was used. The results
revealed that all the growth parameters and yield attributes were significantly
influenced due to different treatments. The scrutiny of data of yield attributes
clearly reveals that the application of weed free till mature gave significantly the
highest value of growth , yield attributes and yields followed by hand weeding (T4).
Among herbicides the Pretilachlor @ 1.25 Kg ha-1(PE) + Bispyribac sodium @ 25g
a.i. ha-1 (POE) (T3) having more growth ,yield attributes and yield with other rest
herbicides. The highest cost of cultivation of Rs.114146.00 per ha was incurred
under treatment (T5) Weed free till mature due to higher labour cost followed by 2
hand weeding (T4) Rs.87833.00. The highest gross return (130420.4 ) was obtained
with treatment (T5) weed free till mature. The highest net return (85577.00 ) was
obtained with treatment (T3) Pretilachlor @ 1.25 Kg ha-1(PE) + Bispyribac sodium
@ 25g a.i. ha-1 (POE). The highest benefit cost ratio (2.21) was obtained with
treatment (T3) Pretilachlor @ 1.25 Kg ha-1(PE) + Bispyribac sodium @ 25g a.i. ha-1
(POE).
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