Effect of foliar spray with boron and copper on dry weight, yield and storability of onion under sandy soil conditions [electronic resource].

Includes references.

Two field experiments were carried out during two winter seasons of 2000/2001 and 2001/2002 at El-Khattara Experimental Farm, Fac. Agric., Zagazig University, to study the effect of foliar spray with boron, copper and their interaction on dry weight, yield and storability of onion under sandy soil conditions. Spraying onion plants with boron at 70 ppm increased chlorophyll a,b, total (a+b) in leaf tissues, K(%) in roots and leaves, P (%) in bulb, but decreased weight loss and sprouting percentage of bulbs during storage period. Foliar spray with copper at 100 ppm increased dry weight of bulb and total dry weight! plant, chlorophyll a, b, total (a+b) and caroteindes in leaf tissues. Maintime, copper at 50 or 100 ppm increased K (%) in roots, P (%) in bulbs, P(%) and K (%) in leaves, average bulb weight, and total and marketable yield I fed. Whereas spraying with copper at 50 ppm recorded minimum weight loss and sprouting percentage of bulbs during storage period. The interaction between boron and copper at different concentrations recorded maximum total dry weight I plant, average bulb weight, total and marketable yield/jed, but recorded minimum sprouting percentage of bulbs during storage period compared with controL The interaction between boron at 35 ppm and copper at 100 ppm or between boron at 70 ppm and copper at 50 ppm recorded minimum weight loss percentage of bulbs during storage period.

Summary in Arabic.

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