Every autumn and winter, citrus is more serious than magnesium Magnesium Nitrate Fertilizer deficiency, and the late old leaves fall off, and even some of the bottom branches dry, seeing that it has reached the most serious time of magnesium deficiency, agricultural financial purchase also comes to remind everyone, if possible, please spray in the near future, plus magnesium fertilizer, especially citrus of the rootstock of the citrus shell head, it is easier to lack vegetarians. Those who have been spraying calcium and magnesium do not need to worry, but only those who spray calcium need to pay close attention to replenishment. If the leaves are not yellowed in the later stage, it is said to affect the coloring in the near future, and it is to affect the differentiation of the entire flower buds, and the flowers and fruits are preserved (citrus flowers and fruits are less nutrients absorbed by the root system in the spring, so a lot of nutrients come from leaf synthesis).
Recently, many fruit farmers have reflected the yellowing of Magnesium Oxide powder citrus leaves, in addition to the root system, circumcision problems in this period, it is mostly caused by magnesium deficiency, a look at the photo, it is indeed magnesium yellowing. After August, the old leaves are particularly prone to magnesium deficiency and yellowing, and October, November is more obvious, I don't know if friends have found it? The lower left corner of the leaf symptoms are more obvious, showing inverted V-type yellowing, the fruit is expanding rapidly, the leaves have gradually shown symptoms of magnesium deficiency, in the early stage of magnesium deficiency, the leaves first produce irregular macula along both sides of the leaf veins, gradually expanding to both sides, so that the leaf veins are ribbed yellowing, the later macula is united with each other, most of the leaves are yellow, only the middle vein and the base maintain an inverted V-shaped green area, when serious deficiency, the whole leaf is yellow, easy to fall off, the fallen branches are weak, often withered in the spring of the following year, the tree body is prone to premature aging, it is difficult to restore yield. The symptoms of magnesium deficiency in this tree are more obvious, and the area of yellowing is getting larger and larger, especially the magnesium deficiency of the leaves with many fruits and close to the fruit is more obvious. Magnesium is easily moved in citrus, preferential transfer to the growth point, and the magnesium extracted from the new leaves will be transferred from the old leaves Magnesium Oxide price to the new leaves, so that the old leaves are magnesium-deficient; Seed formation requires more magnesium, and the transfer of magnesium from the leaves to the seeds in the late stages of fruit expansion will lead to a lack of magnesium in the leaves near the fruit. Therefore, citrus magnesium deficiency first manifests itself in the lower old leaves and leaves near the fruit.