The top edge of the old leaf is scorched and spreads along the vein to the base(cheap plastic plant pots bulk). The carbonamine in the fertilizer nitrogen fertilizer and the phosphate rock powder in the phosphate fertilizer are ineffective or harmful to the foliage spraying, and spraying is strictly prohibited. Suitable varieties are urea, superphosphate, potassium dihydrogen phosphate, potassium sulfate(cell trays), plant ash and trace amounts, borax, zinc sulfate, manganese sulfate, iron sulfate in the elements.(heavy duty 2 gallon nursery pots for sale)
After the application, the whole garden is watered once(plastic plant trays wholesale). The spraying urea concentration is preferably 0.3% to 0.5%, the superphosphate spraying concentration is 0.5% to 1.2%, the potassium dihydrogen phosphate spraying concentration is 0.2% to 0.4%, and the ternary compound fertilizer spraying concentration is 0.4%. ～0.5%, the concentration of sprayed ash is 1.5% to 2%, and the concentration of borax, zinc sulfate, ferric citrate, magnesium sulfate, etc(gallon nursery pots). in the trace elements is 0.08% to 0.15%.
After the application, the whole garden is watered once(square grow pots). Therefore, the deep distribution of the root system should be properly applied, so that the fertilizer will naturally fall below the leaves. The main function of apple tree base fertilizer is to ensure the photosynthesis of fruit trees before harvesting to improve the nutrient accumulation, and lay a good foundation for the growth and development of fruit trees in the next year(5 gallon nursery pots wholesale). Apple tree fertilization is generally divided into base fertilizer and top dressing.
(heavy duty 2 gallon nursery pots for sale)Generally, to make up for the lack of nutrition in the late shoot growth(large plastic terracotta pots), it is also possible to spray the quick-acting nitrogen fertilizer 1-2 times on the foliar surface. The specific fertilization time is also determined according to apple varieties, fruit tree fertilizer requirements, and tree growth results. Ferric citrate, etc(black plastic plant pots). Foliar spray application is not the main method of fertilization, but only an auxiliary fertilization method used in the case of insufficient soil fertilization.
The fertilizer is easily absorbed and the spray should be from the top to the bottom of the leaf(plug trays). 30-40 days after the flowering of kiwifruit is the period of rapid expansion of kiwi fruit. At this stage, the fruit grows rapidly and the volume increases rapidly. The lack of fertilizer can hinder the expansion of the macaque. In order to enrich the kiwi fruit inside, increase the weight of single fruit and improve the quality(gallon plant pot), it is advisable to apply phosphorus and potassium fertilizer in June-July.
This stage of foliar spray can also enhance the storability of the fruit(plastic plant pots wholesale suppliers). This fertilization should be based on foliar spray, with 0.5% potassium dihydrogen phosphate, 0.3-0.5% urea solution and 0.5% calcium nitrate. It is especially important to replenish tree nutrients in the leaves after the kiwi fruit is harvested. Before the leaves are defoliated, 0.5% urea solution can be sprayed on the leaves to increase the photosynthesis of the leave(3 gallon nursery pots wholesale)s, promote the return of nutrients to the roots and stems, and increase the nutrient reserve.(heavy duty 2 gallon nursery pots for sale)
In the autumn, the base fertilizer should be applied early(nursery plant pots), and the organic fertilizers such as manure, manure, compost, manure and cake fertilizer are mainly used, and some quick-acting fertilizers such as superphosphate and ammonium nitrate are mixed. 4 years old tree plant application of organic fertilizer 20-30 kg, plus 0.25 kg of superphosphate and ammonium nitrate. It can be applied in the whole garden or in the trench(propagation tray). Watering once in a timely manner after application.