Weed management in cowpea [Vigna unguiculata (L.) Wasp.] under rainfed conditions

Gupta, Kamesh; Gupta, Anil Kumar; Sαxena, R. S.

doi:10.15740/has/ijas/12.2/238-240

Cited by 15 publications

(22 citation statements)

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“…In different weed management treatments it was found that treatments T 10 (2 HW + 2 IC Madukwe et al, (2012) and Gupta et al, (2016).…”

Section: Resultsmentioning

confidence: 99%

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Integrated Weed Management in Cowpea (Vigna unguiculata (L.) Wasp.) under Rainfed Conditions

Kumar¹,

Singh²

2017

Int.J.Curr.Microbiol.App.Sci

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“…In different weed management treatments it was found that treatments T 10 (2 HW + 2 IC Madukwe et al, (2012) and Gupta et al, (2016).…”

Section: Resultsmentioning

confidence: 99%

“…The critical period of crop weed competition in cowpea has been identified as 20-30 days after sowing and presence of weeds beyond this period causes severe reduction in yields Gupta et al, (2016). Hence, weed control needs to be undertaken during initial period of crop growth.…”

Section: Issn: 2319-7706 Volume 6 Number 3 (2017) Pp 97-101mentioning

confidence: 99%

Integrated Weed Management in Cowpea (Vigna unguiculata (L.) Wasp.) under Rainfed Conditions

Kumar¹,

Singh²

2017

Int.J.Curr.Microbiol.App.Sci

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“…Studies have been conducted to evaluate weed management practices including IWM with the best agronomic yield in cowpea (Osipitan et al, 2013(Osipitan et al, , 2016Adigun et al, 2014), however, reports have shown that a management practice with best agronomic yield may not necessarily translate to best economic benefit to farmers (Gupta et al, 2016;Sepat et al, 2017). Therefore, the objectives of this study were to evaluate: (1) economic benefits of weed management methods used singly and in an integrated approach; (2) influence of row-spacing on economic benefits of weed management methods.…”

Section: Introductionmentioning

confidence: 99%

Economics of Weed Management Methods as Influenced by Row-Spacing in Cowpea

Osipitan¹,

Yahaya²,

Adigun³

2018

JAS

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Weed management is an important factor that influences the economic importance of cowpea as a cheap source of food and income for many farmers. A study was conducted to evaluate economic benefits of weed management methods used singly or in an integrated approach, and to understand the influence of row-spacing on economic benefits of weed management methods. Total variable cost of cowpea cultivation was substantially influenced by cost of weed control. A single input of hand weeding resulted in higher cost of weed control than a single input of PRE-herbicide for weed control. Increase in weed control inputs or frequency did not guarantee an increase in economic benefits. For example, removing weeds three times with hand at 3, 6 and 9 weeks after planting (WAP) during the cowpea growing season did not necessarily result in the highest yield, but rather increased the variable cost of weed control. Integrating PRE-herbicide and hand weeding for weed management resulted in the highest yield and gross profit. The lowest cost of weed control provided by using PRE-herbicide gave the highest benefit-cost ratio. The differences in economic values of weed management methods were mostly not affected by cowpea row-spacing, but generally, economic benefits of management methods decreased with increase in row-spacing. Practically, this study suggests that minimizing the use of hand weeding by complementing with PRE-herbicide for weed management could help to optimize yield, and increase profitability, particularly under a narrow row-spacing in cowpea cultivation.

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“…Yield losses cause by weeds alone in cowpea production can range from 25% to 76% depending on the cultivar and environment (Adigun et al, 2014;Gupta et al, 2016;Osipitan et al, 2016;Ugbe et al, 2016). Problems caused by weed in cowpea production include reduction in crop yield, less efficient land use, higher cost of production due to insects and plant disease control, reduction in crop quality, water management problems, and less efficient utilization of labour (Patil et al, 2014;Gatachew et al, 2015;Prabhu et al, 2015;Singh et al, 2016).…”

Section: Weed Problem In Cowpeamentioning

confidence: 99%

“…A season long weed interference could potentially reduce cowpea yield by 53 to 76% (Olorunmaiye & Ogunfolaji, 2002;Adigun et al, 2014;Gupta et al, 2016). Allowing weed to interfere with cowpea growth for up to 50 days after crop emergence (DAE) reduced cowpea yield by 26 to 75% (Olorunmaiye & Ogunfolaji, 2002;Adigun et al, 2014).…”

Section: Impact Of Weed Interference Duration and Critical Time Of Wementioning

confidence: 99%

Weed Interference and Control in Cowpea Production: A Review

Osipitan¹

2017

JAS

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In spite of the great economic potential of cowpea as both domestic and commercial crop, a number of constraints, which include insect pests, diseases and weeds, limits its production in West and many parts of Africa. Weeds reduced cowpea yield and value by competing for light, water and nutrients. Cowpea suffers from weeds particularly when the crop is in the early growth stages before ground cover. Yield losses cause by weeds alone in cowpea production can be as high as 76% depending on the cowpea cultivar, environment and weed management practices. A timely weed removal at the critical period, which falls within the first 40 days of cowpea growth, would help to prevent an unacceptable yield. Weed management in cowpea has been with low technology. Hand weeding is the most widely used weed control method in cowpea but they are usually expensive and labour intensive. Cultural practices such as narrow row spacing and planting of early maturing varieties are also used for weed control in cowpea. Herbicides, which are relatively easy to use and less expensive, have not been widely adopted for weed control in cowpea. There are limited number of selective herbicides with wide spectrum for weed control in cowpea. However, an integrated practices that involved pre-emergence weed control using herbicides or physical weeding, and a supplementary weed removal that would ensure weed control up to 40 days after cowpea emergence could substantially prevent yield losses associated with weed interference.

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Weed management in cowpea [Vigna unguiculata (L.) Wasp.] under rainfed conditions

Cited by 15 publications

References 0 publications

Integrated Weed Management in Cowpea (Vigna unguiculata (L.) Wasp.) under Rainfed Conditions

Integrated Weed Management in Cowpea (Vigna unguiculata (L.) Wasp.) under Rainfed Conditions

Economics of Weed Management Methods as Influenced by Row-Spacing in Cowpea

Weed Interference and Control in Cowpea Production: A Review

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