Effect of use high concentrations of urea as a foliar nutrition in some physiological aspects and characteristics of the fruits of eggplant Solanum melongena L.
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2012, Volume 10, Issue 1, Pages 117-127
AbstractThe field experiment had been conducted in the Lath-house in the college of Agricaltur , Anbar University by planting Solanum melongena L. Black beauty during agricultural season of 2010. Seedlings were distributed randomly according to complete randomized design (CRD) . The four concentrations of urea dissolved in distill water . The levels of urea were control (N0) ; 0.5 g/L(N1) ;1 g/L(N2) ; 8gm/L (N3) . Eggplants were sprayed by urea concentrations four times starting 40 days after transplanting .Results showed that the N2 and N1 treatments had the highest fruit weight (216.54g) and (200.25g) respectively .Both are significant differs in comparison with control treatment (159.18g) . Length of the fruits N2 showed the highest 11.56 cm which was upgraded to level of significant in comparison with control treatment (10.64 cm). As to the diameter of the fruit ,treatment N2 showed the highest value of diameter is (5.79 cm) with significant elevation in value in comparison with control treatment value (5.28cm). As concerning the physiological study N2 treatment had the highest rate of total chlorophyll (5.53mg/g) with significant differences in comparison with control and N3 treatment 4.30 mg/g and 3.43 mg/g at rate respectively Result also showed control to have the lowest ratio of nitrogen percentage in leafs (3.76%) in comparison to its value recorded by N3 treatment (3.95%) and with significant difference. Obviously result showed that spraying eggplant with urea of 0.5 g/L(DW) and 1 g/L(DW) concentration was suitable once to have the highest quality and quantity yield of fruits and the best physiological condition to plant.
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