RESPONSE OF MAIZE AND ASSOCIATED WEEDS TO SOME POST·EMERGENCE HERBICIDES | ||||
| Journal of Plant Production | ||||
| Article 8, Volume 29, Issue 3, March 2004, Page 1227-1237 PDF (214.47 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2004.238579 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Samia A. Saad EI·Din,; Nadia K. Messiha; G. M. Metwally | ||||
| Botany Department, National Research Centre, Dokki, Cairo, Egypt. | ||||
| Abstract | ||||
| Two field experiments were conducted at the Experimental Farm of National Research Centre at Shalakan, Kalubia Governorate, Egypt, through two successive seasons of 2002 and 2003, to study the effect of some post-emergence herbicides on maize plants and associated weeds. The results showed that hand hoeing twice (21 and 35 days from sowing and Bentazone at 0.230 kg a.i.lfed. applied as post- emergence were the best treatments in controlling total annual weeds up to 75 days after maize sowing, compared to the other treatments. Fluroxypyr at 0.080 kg a.i.lfed., Triclopyr at 0.192 kg a.i.lfed. or Bentazone at 0.230 kg a.i.lfed. each applied post- emergence as well as two hand hoeing treatment gave the best broad leaved weed control more than the other treatments. While, hand hoeing twice and post-emergence application of Bentazone at 0.230 -kg a.i.lfed. as well as Mo at 0.800 a.i.fed .. gave acceptable control of annual grass weeds, compared to the other treatments. Hand hoeing treatment as well as Fluroxypyr, Triclopyr and Bentazone at the high rates improved the growth of maize plants and resulting in the longest ears, the highest number of grains/row, the heaviest weight of 100-grain, the highest grain yield per plant and per feddan as compared with unweeded control. All tested herbicides including hand hoeing treatment significantly increased oil content in maize grains when compared with unweeded control. | ||||
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