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The use of weed density to predict loss in wheat yield due to weed competition
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Abstract: The relationship between natural population densities and wheat yield were estimated in three field studies at Sakha research station and wheat fields in Kafr El Sheikh governorate in Egypt. Polynomial regression and economic analysis referred that there was a negative relationship between weed density and wheat yield and number of spikes/m2 where 50-60 weeds/m2 density decreased wheat yield by 1.22 t/ha as compared with zero level of weed density accompanied with decreasing in the profitability. Thus, estimation weed density at 4-5 leaf stage can be used to predict wheat yield loss and making decisions of weed control in wheat fields.
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| Publication year |
1999
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| Pages |
668-673
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| Organization Name |
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| serial title |
Weeds and environmental IMPACT
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| Author(s) from ARC |
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| External authors (outside ARC) |
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| Agris Categories |
Weeds and weed control
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AGROVOC
TERMS |
Forecasting.
Wheats.
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| Proposed Agrovoc |
weed density;polynomial;net income;profitability.;
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| Publication Type |
Conference/Workshop
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