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Evaluation the Efficiency of Three Sulfonylurea Herbicide and Their Effects on Maize (Zea mays L.) Grain Yield

Author(s): Iraj Nosratti | Hassan Muhammad Alizade | Taymour Makmasoumi

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 7;
Issue: 7;
Start page: 1262;
Date: 2007;
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Keywords: foramsulfuron | rimsulfuron | Planting pattern | nicosulfuron

Field studies were conducted in 2005 at Karaj, northern of Iran, to evaluate the efficacy of Sulfonyl Urea (SU) herbicides on weed control in maize and compare them with other herbicides at single and double row planting patterns. The treatments were three SU herbicides, nicosulfuron, rimsulfuron, foramsulfuron and most commonly used herbicides in maize. Hoe weeded and unweeded treatments also were included. The findings of this study showed that at both planting patterns all plots that received nicosulfuron had significantly higher maize grain yield than other two SU herbicides. At Double Row (DR) planting pattern, all the treatments controlled weeds more effectively than at Single Row (SR) planting pattern and increased maize grain yield by mean of 1.0 t haG1. At both planting patterns herbicidal mixture of atrazine and alachlor was the best treatment in controlling weeds. The hoe weeded control and all herbicidal treatments had lower weed dry matter than the untreated control at crop harvest period. In addition the lowest weed dry matter was obtained from the hoe weeded control. Results of this study revealed that nicosulfuron and rimsulfuron were the best and the weakest SU herbicide at both planting patterns, respectively.

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