When nitrogen deficiency occurs in eggplants, nitrogen deficiency occurs first, and the leaf color of the old leaf turns green and yellow, and the stem color often changes. The growth stagnates. Finally, all the leaves turn yellow, and there are no results or small and yellowish results. Plants are short, yellow leaves, and dry off when severe. Although a small number of flower buds were also formed during the flowering period, most of the buds turned yellow off because there was not enough nutrients to supply their development in a suppressed state. Remedial measures: timely topdressing urea, ammonium bicarbonate and other available nitrogen or human waste, or with 0.3% -0.5% urea foliar spray.
Phosphorus deficiency Phosphorus deficiency in eggplant, the leaves gradually fall off from the lower part, darker color, red veins, small plants, no formation of flower buds or flower buds significantly delayed, significant increase in the number of nodes, directly affect the yield composition. Remedy: Spray with 0.2% potassium dihydrogen phosphate solution or 0.5% calcium superphosphate leachate.
When the eggplant lacks potassium, the yellow veins appear between the veins, the upper leaves are clustered, the fruit is small, the top of the fruit, the vascular bundles, the fruit seeds are brown, and finally the leaves fall off. Remedy: Spray with 0.2%-0.3% potassium dihydrogen phosphate solution or 10% ash leaching solution.
Boron deficient in eggplant, boron from the parietal lobe, withering, top stem and petiole break, the internal black, stems with cork crack. Remedy: Spray with 0.05%-0.2% borax solution or boric acid solution.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Shandong Longze Mechanical Equipment Co.,Ltd , https://www.pelletmachinefactory.com