Heterogeneity analysis of sprinkler irrigation in peanut fields [electronic resource].

Includes references.

The main factors that affect the water distribution over the plot of sprinkler irrigation systems, and their influence on peanut yield were investigated. The split-split plot design was used. One dimension mathematical model was developed to simulate the soil moisture distribution profile under catch cans of sprinkler irrigation system. Results indicated that the coefficient of uniformity, distribution uniformity and water application efficiency were increased with increasing the riser height. The area of water distribution at low quarter was decreased with increasing the riser heights. The evaporation and drift losses were increased with sprinkler RB30 more than sprinkler RB 70 by average of 300%. The highest value of the soil moisture distribution uniformity was at 75cm riser height at different soil depths after 1 and 4 days from irrigation. For all riser heights after 24h from irrigation, the average of the soil moisture contents ranged around the field capacity at the soil layers up to 15cm with moisture distribution uniformity of 95.5% for RB30 and up to 25cm with uniformity of 94% for RB70.

Summary in Arabic.

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