| Autor: |
Khaliq, Abdul, Matloob, Amar, Irshad, Muhammad Sohail, Tanveer, Asif, Zamir, Muhammad Shahid Ibni |
| Zdroj: |
Pakistan Journal of Weed Science Research; Dec2010, Vol. 16 Issue 4, p409-420, 13p, 4 Charts |
| Abstrakt: |
Weed suppression is one of the several benefits associated with application of crop residues as mulch in field crops. Nonetheless, the crop residues on the soil surface contribute physically towards weed suppressive effect, yet the chemical effect of phytotoxins released from decomposing residues also imparts significantly for weed control. A field experiment aimed at establishing the weed suppression potential of mixture of crop residues and their effects on maize yield was conducted. Residues of sorghum (Sorghum bicolor L.), sunflower (Helianthus annuus L.), rice (Oryza sativa L.) and brassica (Brassica campestris L.) in various combinations were soil incorporated at 5 and 7.5 t ha-1. Results revealed that a combination of sorghum + sunflower + brassica residues at 7.5 t ha-1 provided > 90% suppression in density and dry weight of horse purslane (Trianthema potrtulacastrum L.) and purple nutsedge (Cyperus rotundus L.) as compared with control (no residue). This treatment also accounted for maximum maize grain yield and net benefits. For better management of natural resources and to decrease environmental pollution, soil incorporation of crop residues may serve as an important weed management tool in maize fields. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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