Effect of mulching on root zone moisture content and yield of different sunflower varieties under rainfed conditions
2001
Tariq, J.A. | Khan, M.J. | Haq, I. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Water Management)
The research study was conducted at Barani Agricultural Research Station, Kohat, NWFP during spring season, 1999. The main objective of the study was to investigate the effect of mulching on root zone moisture content and yield of different sunflower varieties under rain fed conditions. The experiment was conducted with five varieties of sunflower and two types of mulches with two different rates, i. e. 4 & 5 t/ha using randomized Complete Block Design with split plot arrangement. Five treatments were assigned. Control (T1), wheat straw at the rate of 4 ton/ha (T2), wheat straw at the rate of 5 ton/ha (T3), grass hay straw at the rate of 4 ton/ha (T4), and grass hay straw at the rate of 5 ton/ha (T5). The plot size was 6 m square. Soil physical and chemical properties were determined in laboratory. Eta was determined by depletion method. The consumptive use (Eta) of sunflower during mulching period was 248.3mm (T5). Results on yield and its components indicated that mulching had significant effect on all yield components. The maximum yield of 524.9 kg/ha was obtained in the plot covered by wheat straw at the rate of 5-ton/ha (T3). Based on this study, it can be concluded that wheat straw and massive hay straw should be applied at 5 ton/ha for having maximum yield with light irrigation in flowering and grain formation stages.
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