PJB-2020-441
YIELD AND WATER USE OF EGGPLANT UNDER DIFFERENT IRRIGATION REGIMES AND FERTILIZERS
Mahmoud Al Ali
Abstract
This study aims to determine the effect of four levels of irrigation water and three kind of fertilizer on yield and water use of field grown eggplant (Solanum melongena L.) in the years of 2017 and 2018. Treatments included four irrigation regimes, which were 100 % (I100, control), 80 % (I80), 60 % (I60), and 40 % (I40) of evaporation from Class A pan and three different fertilizers, which were chemical fertilizer (CHF) with 40 kg da-1, organic fertilizer (OF) with 2000 kg da-1 and developed organic fertilizer (DOF) with 2000 kg da-1. Total irrigation water of 305 and 360 mm were applied to I100 irrigation treatment, in which water use was determined as 447 and 436 mm, respectively. In both of experiment years, effect of irrigation level on fruit yield was found to be significant statistically (p<0.05) but effect of fertilizers treatments was insignificant (p>0.05). The highest yield with 3681and 4515 kg da-1 was harvested from I100 irrigation treatment, and the lowest yield with 3021 and 2792 kg da-1 from I40 irrigation treatment, respectively. Irrigation water use efficiency (IWUE) range from 11.9 to 25.68 kg mm-1. In irrigation programming, Kcp3: 0.80 plant-pan coefficient and in fertilizer, DOF are recommended for field-grown eggplant.
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