The effect of tillage systems and irrigation frequencies on maize (Zea mays) yield in Gezira Scheme [Sudan]
1997
Abakora, S.A. (University of Khartoum. Faculty of Agriculture, Department of Agricultural Engineering (Sudan))
A study on the effect of tillage systems and irrigation frequencies on maize (Zea mays L.) Yield was conducted during two consecutive winter seasons (1993/94 and 1994/95) at El Neiuella Block, No. 29 Wadi Shair Group, S. G. B. The tillage practices studied were tillage one (T lower1 = Disc ploughing + disc harrowing + ridging), tillage two (T lower2 = Ridging twice), and tillage three (T lower3 = Disc harrowing + ridging). The irrigation frequencies imposed were irrigation one ( I lower1 = 11 days irrigation interval), irrigation two (T lower2 = 14 days irrigation interval) and irrigation three (I lower3 = 17 days irrigation interval). The experimental design used was split block design with three replications. The results obtained showed that the 93/94 season had significantly higher values of plant height and dry matter at 30, 45 and 60 days from sowing than that of 94/95 season. The effect of tillage systems on the final maize yield were inconsistent, but generally the yield of the 94/95 season had significantly higher values than that of the 93/94 season. The effect of irrigation intervals on maize final yield, subplots with longer irrigation intervals gave consistently higher yield values than those of small irrigation intervals. The effect of irrigation interval on maize yield was more significant in the 93/94 season than that of the 94/95 season, because the Autherity of Irrigation stopped watering on the 31st of march 1994, when the crop was in need of one moore irrigation. The effect of interaction (I X T) on maize yield wer inconsistent, but generally I lower3 and its combinations of (Ts) gave significantly higher maize yield values than other treatments.
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