Removing the terminal bud in comparison with spraying of benzyl adinine and their effects on growth and productivity of eggplant under different rates of nitrogen fertilization
2009
El- Tantawy, E. M. | Ahamed, A.E. | Easa, G.S.A.
Effect of four nitrogen rates (0, 60, 90 and 120 kg/fed ), foliar spray with benzyl adenine (BA) at 25 ppm and removing the terminal bud (RTB) on growth, yield and nitrogen use efficiency of eggplant under North Sinai conditions, and the results indicated that: It has been found that fertilization of eggplant with 90 kg N /fed recorded the tallest plants and increased dry weight of roots, branches, and total dry weight / plant. It also, increased average fruit weight, yield /plant, fruit length without significant differences with application of 60 or 120 kg N/ fed. as well as increased the nitrogen use efficiency, whereas N at 120 kg / fed. recorded the maximum values of N content in leaves and stems, yield/plant, total yield/ fed and the relative total yield (%). Number of branches/plant and the relative branching (%) were significantly decreased with increasing nitrogen rates in the first season, whereas control treatment recorded the highest value of number of branches/ plant. Spraying eggplants with benzyl adenine (BA) at 25 ppm or removing the terminal bud significantly increased number of branches /plant and the relative branching(%), dry weight of branches, total dry weight /plant and the relative total dry weight(%) compared to control treatment. Fertilization of eggplant with N at 90 or 120 kg /fed. plus spraying with BA at 25 ppm increased the most parameters of yield and its components without significant differences with application of 90 or 120 kg /fed. with removing the terminal bud.
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