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Economic threshold of infestation with the cotton leaf-worm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) in cotton fields in A.R.E. 4- Economic injury levels during the different growth stages of cotton plant



Economic threshold of infestation with the cotton leaf-worm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) in cotton fields in A.R.E. 4- Economic injury levels during the different growth stages of cotton plant



Arab Journal of Plant Protection 10(1): 9-17



The effects of damage by Spodoptera littoralis on cotton were investigated in the field in Egypt. Losses of 1 or 50% of leaf area at the vegetative growth, budding, flowering, initial fruiting and full fruiting stages decreased cotton yield/feddan by 5.54-6.32 kg or 24-28%, 6.57-6.58 kg or 28-49%, 4.76-5.15 kg or 35-37%, 4.84-5.90 kg or 27-40% and 2.49-2.57 kg or 14-18%, resp.

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Accession: 002351988

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Related references

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