Effect of weed management at different levels of sulfur coated urea on yield and qualitative traits of Beta vulgaris
Subject Areas : agronomy
1 - Department of Agronomy, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran
Keywords: root yield, Key Words: Herbicide, weeds dry weight,
Abstract :
In order to evaluate of weeds control at different levels of sulfur coated urea on yield and qualitative characteristics of sugar beet, a study was carried out as split plot design in randomized complete blocks design with four repetitions in Shoushtar region during 2016. Experimental treatments consisted of four different levels of sulfur coated urea (SCU) (0, 150, 180 and 250 kg.ha-1). The use of herbal treatments of chloropyralide + Des Modifam + Moeifam + Autophamousite and metamitron + Modifem + Autophamousite as a sub-agent. The results showed that weed dry weight was affected by different amounts of urea with sulfur coating and increased with increasing sulfur content of urea, which increased the weed weight of weeds, so that it was highest in application of the highest amount of urea with sulfur content per hectare with no weeding of weeds. The amount of 237 grams per square meter was obtained. Also, in the effects of fertilizer interaction and weed control, the highest yield of sugar beet (13421 kg) was attributed to full weed treatment and the highest application rate of sulfuric urea. The highest root yield of sugar beet (57004 kg ha-1) was related to weed control and application of the highest amount of sulfur urea. Among the weed control treatments, the highest root yield of sugar beet (46711 kg.ha-1) was obtained in metamitron + Des medifam + Autophamousite herbicide application and application of the highest amount of urea with sulfur content per hectare. Also, the highest percentage of pure sugar in the treatment of non-application of sulfur content of urea with non-control of weeds was 18.6% and 20.30%, respectively. In general, it can be said that Urea fertilizer with sulfur coating with the use of Médifam + Des Moiifam + Autophamousite + Metamitron has the optimum performance of sugar beet.
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