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Abstract

In this studs’, the effect of various tillage methods on irrigated wheat yield was investigated. Tillage methods included: plowing with moldboard plow in spring and fall, plowing with moldboard plow in spring, plowing with moldboard plow in spring and chisel plow in fall, plowing with chisel plow twice in spring, chisel plow in spring and fall, moldboard plow in fall, plowing twice with chisel plow in fall (perpendicularly). After plowing, disk harrow and leveler were used in all treatments. A randomized complete block experimental design with 7 treatment and 4 replications was used. Factors investigated were: seed emergence rate, number of plants per unit area, plant height. number of heads per unit area, weight of 100() seeds, yield, harvest index, infiltration rate anti moisture conservation capacity. Results showed that yield and infiltration rate had significant differences among treatments hut other factors didn’t. Among the various treatments: plowing with moldboard plow in spring and fall had the highest yield and plowing with chisel plow in spring and fall yielded least.

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