Response of speargrass (Imperata cylindrica) to cover crops integrated with handweeding and chemical control in maize and cassava

Chikoye, David; Manyong, Víctor M.; Carsky, R. J.; Ekeleme, Friday; Gbèhounou, G.; Ahanchédé, Adam

doi:10.1016/s0261-2194(01)00078-3

Cited by 53 publications

(44 citation statements)

References 11 publications

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“…As a result of the interference of speargrass (Imperata cylindrica (L.) P.Beauv.) yield loss can be as high as 80% in cassava (Manihot esculenta Crantz) and 50% in maize (Zea mays L.) [59,60]. Heavy infestations of parasitic weeds often inflict 60% to 90% yield loss [61]; in China, ten million tons of rice are lost annually due to weed interference [62].…”

Section: Preventive Weed Managementmentioning

confidence: 99%

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sims¹,

Corsi²,

Gbèhounou³

et al. 2018

Agriculture

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Land degradation and soil fertility deterioration are two of the main causes of agricultural production stagnation and decline in many parts of the world. The model of crop production based on mechanical soil tillage and exposed soils is typically accompanied by negative effects on the natural resource base of the farming environment, which can be so serious that they jeopardize agricultural productive potential in the future. This form of agriculture is destructive to soil health and accelerates the loss of soil by increasing its mineralization and erosion rates. Conservation agriculture, a system avoiding or minimizing soil mechanical disturbance (no-tillage) combined with soil cover and crop diversification, is considered a sustainable agro-ecological approach to resource-conserving agricultural production. A major objective of tillage is supposed to be weed control, and it does not require very specific knowledge because soil inversion controls (at least temporarily) most weeds mechanically (i.e., by way of burying them). However, repeated ploughing only changes the weed population, but does not control weeds in the long term. The same applies to the mechanical uprooting of weeds. While in the short term some tillage operations can control weeds on farms, tillage systems can increase and propagate weeds off-farm. The absence of tillage, under conservation agriculture, requires other measures of weed control. One of the ways in which this is realized is through herbicide application. However, environmental concerns, herbicide resistance and access to appropriate agro-chemicals on the part of resource-poor farmers, highlight the need for alternative weed control strategies that are effective and accessible for smallholders adopting conservation agriculture. Farmers in semi-arid regions contend with the additional challenge of low biomass production and, often, competition with livestock enterprises, which limit the potential weed-suppressing benefits of mulch and living cover crops. This paper reviews the applicability and efficacy of various mechanical, biological and integrated weed management strategies for the effective and sustainable management of weeds in smallholder conservation agriculture systems, including the role of appropriate equipment and prerequisites for smallholders within a sustainable intensification scenario.Keywords: smallholder farming; conservation agriculture; sustainable and ecological weed management; preventive; cultural and direct control methods of weed management

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Section: Preventive Weed Managementmentioning

confidence: 99%

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sims¹,

Corsi²,

Gbèhounou³

et al. 2018

Agriculture

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“…Although, cultural methods are still useful tools they are laborious, time consuming and expensive, especially when labour problem is becoming severe day by day. Hand hoe weeding when done timely twice or thrice, or the use of herbicides have controlled weeds effectively in maize (Chikoye et al, 2002). Considering the limitations of cultural methods of weed control, chemical weed control is an important alternative.…”

Section: International Journal Of Current Microbiology and Applied Scmentioning

confidence: 99%

Evaluation of Fertility Levels and Herbicide Mixtures for Yield and Yield Attributes of Rainfed Maize under Temperate Conditions of Kashmir Valley

Gul¹,

Khanday²,

Khan³

2018

Int.J.Curr.Microbiol.App.Sci

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“…Dimes, Muza, Malunga and Snapp (2001) observed in their simulation experiment of maize grain yield response to weeding frequency that yield increased with increasing weeding frequency. Also, Chikoye, Manyong, Carsky, Ekeleme, Gbehounou and Ahanchede (2002) reported that higher weeding frequency manually or by using herbicide was better than lower one in weed control, leading to yield increase. Truong Thi Ngoc Chi, Hossain and Flor Palis (2004) reported that weed and rice disease control influenced rice yield, that is, rice field without weeds and diseases increased rice productivity.…”

Section: Weeding Frequencymentioning

confidence: 99%

An Analysis of Yield Gap and Some Factors of Cocoa (Theobroma cacao) Yields in Ghana

Aneani¹,

Ofori‐Frimpong²

2013

SAR

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Although cocoa productivity has recently been increasing in Ghana, it is still low compared with that of other countries such as Cote d'Ivoire and Malaysia. This situation has been attributed to the low adoption of cocoa production technologies. The study was aimed at analysing the yield gap as well as some cocoa yield factors. Cross-sectional socio-economic survey was conducted in six (6) cocoa growing districts: Nkawie, Goaso, Enchi, Oda, Twifo Praso/Assin Fosu and Hohoe. A structured questionnaire was employed in the collection of data from 300 respondents who were randomly chosen with multi-stage cluster sampling technique. The yield gaps and their proportion to yield potentials were estimated using data from the survey and on-station trials. The findings indicated an experimental yield gap of 1 553.4 kg ha -1 , accounting for 82.1% of the experimental yield potential whereas farmer-based yield gap was 1 537.2 kg ha -1 , also accounting for 82.0% of the farmer (survey) yield potential. The Ordinary Least Square (OLS) regression analysis indicated that frequency of spraying fungicides against black pod disease, spraying insecticides against capsids, weeding of cocoa farms, cocoa variety planted by farmer, area of cocoa farm and total cocoa production variables had a significant impact on cocoa yield. It is recommended that the Government should encourage cocoa farmers, through pragmatic measures, to adopt improved technologies for enhancing productivity instead of focusing on excessive land expansion which eventually leads to low productivity.

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Response of speargrass (Imperata cylindrica) to cover crops integrated with handweeding and chemical control in maize and cassava

Cited by 53 publications

References 11 publications

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

Evaluation of Fertility Levels and Herbicide Mixtures for Yield and Yield Attributes of Rainfed Maize under Temperate Conditions of Kashmir Valley

An Analysis of Yield Gap and Some Factors of Cocoa (Theobroma cacao) Yields in Ghana

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