An approach to the biological performance of halosulfuron against Cyperus rotundus l. in relation to its effect on maize chemical analysis and yield [electronic resource].

Includes reference.

Two field experiments were conducted at Agricultural Experimental Research station, Faculty of Agriculture at Giza, during 2006 and 2007 seasons. The biological performance of Halosulfuron against Cyperus rotundus L. and some other broad leaves were estimated. Furthermore the chemical analysis of the total chlorophyll, amino acids and protein contents as well as the maize yield were considered. The fluroxypyr was gave an efficient results against Broad leaved weeds. Furthermore Halosulfuron at 30 g/fed. was more effective than hand weeding treatment in controlling weeds. The efficiency effects against Cyperus rotundus L. were 80.83 and 72% during 2006 season, and 84.62 and 70.90% during 2007 season at of 40 and 70 days after sowing (DAS), respectively. The highest increase in the maize grain yield was obtained by f1uroxypyr at 20 g/fed. (2858 and 3266 kg/fed.), followed by halosulfuron a 30g/fed. (2741 and 3199 kg/fed.) in both seasons, respectively. However, there were no significant differences between the tested two rates of both herbicides. All treatments caused significant increases in the total chlorophyll contents in maize leaves determined at 40 and 70 DAS during both seasons. In addition, significant increases in the total amino acids and protein content in maize grains were recorded as compared with those results of the untreated check treatment during both seasons.

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