The crop-weed competition
A study on crop weed competition in field crops
... A weed is important biological factor in crop production that cause yield reduction and it contributes around 45% of crop yield ...loss. Weed life cycle similar with crops and some weeds have ...
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Assessment of critical period of crop-weed competition in grain sorghum under Sudanian conditions of Southern Senegal
... on crop-weed ...for weed competition in grain ...then weed-free, and weed-free for initial 15, 30, 45 and 60 DAS and then weedy, weed-free and weedy up to harvest were ...
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A trait-based approach to crop–weed interactions
... to crop–weed interactions Pakeman, Robin J ; Karley, Ali J ; Newton, Adrian C ; Morcillo, Luna ; Brooker, Rob W ; Schöb, Christian Abstract: Understanding the mechanisms of community assembly may provide ...
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Effects Of Organic Nutrient Amendments On Weed And Crop Growth
... on crop yield. The conceptual framework is divided into four competition scenarios, which are further subdivided into specific ...which crop-weed competition is unaffected by the added ...
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How To Understand The Competition Between Crop And Weed
... the competition between crop and weeds have shown that the quota of weed leaf area to the total leaf area (crop+weed) gives a more accurate prediction of the yield reduction caused by ...
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Weed management in cotton (Gossypium hirsutum L.) through weed-crop competition: a review
... for weed management in both genetically modified and conventional systems has led to the rapid evolution of herbicide-resistant ...Poor weed management can cause up to 90% yield loss in ...diversifying ...
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CRITICAL PERIOD OF WEED CROP COMPETITION IN FENNEL (Foeniculum vulgare Mill.)
... multi-purpose crop, it is imperative to bring some area under its cultivation and determine agronomic requirements for its successful ...weeds competition affect the production of ...
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Weed suppressive ability of crop mixtures
... when weed issues are a global concern in field production? This question is dealt with by Bàrberi (2002) who discusses the reductionist versus holistic ap- proach to research on weed management in organic ...
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EFFECTS OF WEED CROP COMPETITION PERIOD ON WEEDS AND YIELD AND YIELD COMPONENTS OF SESAME (Sesamum indicum L.)
... critical weed-crop competition period in sesame by subjecting the crop to various weed competition periods and then evaluating their effect on weed density and biomass, ...
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WEED CROP COMPETITION PERIOD IN THREE FINE RICE CULTIVARS UNDER DIRECT SEEDED RICE CULTURE
... regarding weed competitive ability among rice cultivars (Haefele et ...2006). Weed competitive ability of a particular rice cultivar can be assessed in terms of weed number and biomass under weedy ...
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Applying Crop and Weed Competitive Dynamics For Weed Management in Soybean and Peanut
... in competition for solar radiation and result in a reduction in weed ...to weed interference. The HADSS predicted percent yield loss due to weed species competitive indices and densities ...
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Effect of crop sequence and weed control treatments on weeds and pea crop productivity
... Vegetative growth Data in Table 4 point out that both plant height and number of branches/plant were significantly affected by used weed con- trol treatments in the 1st and 2nd seasons. The highest values of plant ...
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Comparison of different cover crop mulches and extracts on inhibition of crop and weed growth
... of competition for light, space, water and nutrients and the release of allelochemicals in the ...cover crop mixture on germination and plant growth of the crop plants maize (Zea mays ...cover ...
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Growth and competition model for organic weed control
... species weed flora may have lead to a more competitive weed flora than if each species had been parameterised ...with crop growth, the weed growth parameters developed from conventional ...
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CANOLA (BRASSICA NAPUS) COMPETITION FOR WEED MANAGEMENT
... break crop in the temperate cropping zone of southern ...quality. Crop competition is a useful tool for reducing weed impacts and suppressing weed growth and ...four crop ...
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Weed Suppression in Only-Legume Cover Crop Mixtures
... Abstract: Weed suppression is a potential benefit of cover crop mixtures, as species diversity may allow for combining early and late-season competition with ...Cover crop and weed ...
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Weed Management in Organic Horticulture by Cover Crop in Iran
... alternative weed control measures (Bastiaans et ...cover crop will be selected for their chemical or physical characteristics to suppress or compete with ...for weed establishment through physical ...
10
Influence of nitrogen on weed growth and competition with grain sorghum
... manual drop seeder after cultivation and prior to planting. The grain sorghum hybrid Pioneer 84G62 was planted on May 28 at rate of 136 000 seeds ha -1 . Each plot was four rows wide at 76 cm spacing and 9 m in length. ...
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A Mechanistic Approach to Weed Management in a Cover Crop Mulched System.
... extreme competition for N and C in high C:N soil systems, and the observed N-immobilization via fungal transport or otherwise is above the N-immobilized (or lost) by the soil microbial ...nutritive weed ...
125
Weed flora, yield losses and weed control in cotton crop
... the crop season, the cotton crop is on flat field, while for rest of season, it is on ...the crop is sown on flat land that will be followed by natural emergence of ...such weed control ...
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