The Effect of Different Weed Management Strategies on the Growth and Yield of Direct-Seeded Dry Rice (Oryza sativa)

Muhammad, S.; Muhammad, Ikram; Sajid, Ashara; Muhammad, Labeed Shareef; Maqshoof, A.; Nadeem, Asif

doi:10.1590/s0100-83582016340100006

Cited by 11 publications

(8 citation statements)

References 19 publications

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“…A signifi cantly higher weed index was recorded in weedy check (59.25% and 84.44%) over all the other treatments (Table 02). The results were in conformity with earlier fi ndings where higher weed biomass was linked to zero weed control measure on weed growth (Olayinka and Etejere, 2015;Muhammad et al, 2016). The lowest weed control effi ciency recorded in sole Pendimethalin at 4lha -1 when compared to treatment such as two hand weeding at 3 and 6 WAT and Pendimethalin at 4lha -1 + one hand weeding at 6 WAT was due to inability of the herbicide to provide continuous weed control.…”

Section: Weed Control Eff Ortsupporting

confidence: 90%

Comparative Growth Analysis and Fruit Quality of Two Varieties of Tomato under Hand Weeding and Pendimethalin Herbicide

2017

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Section: Weed Control Eff Ortsupporting

confidence: 90%

Comparative Growth Analysis and Fruit Quality of Two Varieties of Tomato under Hand Weeding and Pendimethalin Herbicide

2017

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“…As far as weeds concerned, transplanted rice has a clear edge over DSR (Chauhan and Johnson, 2009;Chauhan, 2012). Hence, among various factors affecting rice growth like fertilizer management and sowing dates (Abid et al, 2015), weed invasion is one of the most severe problems in aerobic rice (Khaliq et al, 2012, Muhammad et al, 2016Ullah et al, 2017) which caused reduction in grain yield up to 80% in DSR (Mahajan and Chauhan, 2015). DSR can be sown into a prepared seed bed or under zero-till (ZT) conditions which depends upon the production system.…”

Section: Introductionmentioning

confidence: 99%

Weed Management in Direct Seeded Rice Grown under Varying Tillage Systems and Alternate Water Regimes

et al. 2018

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-In direct seeded rice (DSR), flushes of weeds are encountered, and mostly subsequent herbicides need to apply to control weeds that appear later. A farmer friendly approach was hypothesized in present study to integrate the management strategies for water, soil and cost effective weed free rice production. Efficacy of various herbicides in weed control to improve the performance of aerobic rice grown under varying tillage and alternate water regimes was evaluated. Five weed management techniques (weedy check, weed-free, pendimethalin followed by manual weeding, pendimethalin + bispyribac sodium (BS) + bensulfuron (B) and pendimethalin + MCPA) were carried out within the alternate wetting and drying (AWD) regimes (15 and 20 cm depth) under two tillage systems (zero and conventional). All the herbicide treatments reduced the weed intensity as compared to weedy check, however minimum weed density and dry biomass was observed in pendimethalin at 40 and 60 days after sowing, respectively. Under conventional tillage, weed free plots showed maximum leaf area index, leaf area duration and crop growth rate. Maximum plant height, 1000-kernel weight and kernel per panicle along with less percentage of abortive, chalky and opaque kernels were recorded in pendimethalin followed by BS+B as compared to weedy check plots. Among the herbicides application, pendimethalin followed by BS+B gave highest benefit to cost ratio and net benefits under both AWD regimes. Overall, application of pendimethalin followed by BS+B is an efficient and economic approach to reduce weed infestation which results in improved yield of aerobic rice.Keywords: aerobic rice, herbicides, irrigation management, benefit-cost ratio. RESUMO -Em arroz semeado direto (DSR), são encontradas descargas de plantas daninhas, e a maioria dos herbicidas subsequentes precisam se aplicar para controlar as plantas daninhas que aparecem mais tarde. Uma abordagem amigável ao agricultor foi hipotetizada no presente estudo para integrar as estratégias de manejo de água, solo e produção de arroz sem ervas econômicas. Foi avaliada a eficácia de vários herbicidas no controle de plantas daninhas para melhorar o desempenho do arroz aeróbio cultivado em lavoura variável e regimes alternativos de água. Foram realizadas cinco técnicas de manejo de plantas daninhas (controle de plantas daninhas, sem plantas daninhas, pendimetalina, seguidas de remoção manual, pendimethalin + bispyribac sodium (BS) + bensulfuron (B) e pendimethalin + MCPA) nos regimes alternativos de molhagem e secagem (AWD) (15 E 20 cm de profundidade) sob dois sistemas de preparo do solo (zero e convencional). Todos os tratamentos de herbicidas reduziram a intensidade da planta daninha em comparação com a verificação de plantas daninhas, porém a Copyright:This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Palavras-chave...

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“…Direct seeding of rice (DSR) requires less water and labour as compared to flooded rice (Weerakoon et al, 2011). But the only drawback of DSR is weed infestation which substantially reduces the yield potential (Muhammad et al, 2016); as weeds are notorious competitor of rice and major constraint in adaptation of direct seeding (Saqib et al, 2015). Weeds nurture comparatively with impressive growth in DSR compared to flooded rice system and sometimes results into complete crop failure (Phoung et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Comparative Efficacy of Various Weed Control Measures in Weed Dynamics, Yield and Profitability of Direct Seeded Fine Rice

Anjum¹,

Tanveer²,

Carrijo³

et al. 2017

PAKJAS

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Water and labour scarcity pushes researchers to explore alternate sowing methods for rice like aerobic direct seeding but weed infestation is the major hindrance to adapt this production system. In our study, mechanical, chemical and cultural approaches were employed as weed control measures. Weed dynamics and yield parameters were recorded and economic analysis was performed. All weed control measures significantly reduced the weed density and weed dry weight as compared to control and improved harvest index. Maximum control in total weed density and total weed dry weight was achieved by hoeing followed by chemical control. The order of treatment groups in decreasing total density, total weed dry matter production and increment in harvest index was as cultural, chemical and mechanical. However, substantially highest net returns (PKR 44,049/) and highest benefit cost ratio (BCR) (1.53) were obtained by post emergence application of Penuxsulam at the rate of 15 g a.i ha -1 followed by hoeing. Inter-culture, mulching technique and Sesbania drummondi intercropping scored 1.19, 1.13 and 1.21 BCR, respectively. Thus, hoeing with hoe (25 and 45 days after sowing) and post emergence application of Penoxsulamat the rate of 15 g a.i ha -1 were most effective, profitable and economical weed control options.

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The Effect of Different Weed Management Strategies on the Growth and Yield of Direct-Seeded Dry Rice (Oryza sativa)

Cited by 11 publications

References 19 publications

Comparative Growth Analysis and Fruit Quality of Two Varieties of Tomato under Hand Weeding and Pendimethalin Herbicide

Comparative Growth Analysis and Fruit Quality of Two Varieties of Tomato under Hand Weeding and Pendimethalin Herbicide

Weed Management in Direct Seeded Rice Grown under Varying Tillage Systems and Alternate Water Regimes

Comparative Efficacy of Various Weed Control Measures in Weed Dynamics, Yield and Profitability of Direct Seeded Fine Rice

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