Determination of irrigation interval for sugarcane by monitoring changes in soil moisture in the field at the Guneid Scheme
2006
Ibrahim, H.S. (Soba Research Station, Khartoum (Sudan))
A field trial was conducted for two consecutive seasons during the period 1974 to 1977 at the Guneid Sugarcane Research Station on a heavy cracking clay (Vertisol). The objective of this experiment was to study the effects of irrigation intervals on sugarcane during summer and winter seasons. There were three irrigation treatments, namely M1: irrigating sugarcane when 40-50 % of the available soil moisture was depleted; M2: irrigating sugarcane when 80-90% of the available soil moisture was depleted and M3: irrigating sugarcane when 90-100% of the available soil moisture was depleted. Intensive cane growth was observed from April to August while from August to maturity the rate of growth decreased. Irrigation treatments significantly affected the length of the irrigation intervals, number of irrigations, cane and sugar yields and the percentage sucrose recovery. Treatment M1 gave the highest cane yield in both seasons. Irrigation intervals for plant cane are recommended for the winter and summer seasons in this paper. Delaying irrigation beyond 70% depletion of available soil moisture is detrimental to the growth of sugarcane and will result in economic losses of sugar yield
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