Does boron fertilizer and Molybdenum fertilizer have the effect of preventing premature senescence of peanut at the later stage of peanut growth?
Boron and Molybdenum micro fertilizer can only prevent all kinds of symptoms and premature senescence caused by lack or serious lack of boron and Molybdenum micro fertilizer in peanut at the later growth stage. It has little effect on the lack of other element fertilizers and has no effect on physiological problems caused by diseases and insect pests. Boron fertilizer deficiency will affect the normal growth and development of leaves, flowers, fruits, roots and stems of peanuts, and change the morphology of peanuts. From these changes, we can directly judge the boron deficiency of peanuts. The symptoms of boron deficiency were characterized by death of peanut growth point, damage of vascular bundles, poor root growth, only flowering and fruiting, and delayed growth period. Peanut boron deficiency symptoms, seedling stage and growth period is not easy to find, the symptoms in the peanut internal potential has long existed, until the flowering and fruiting stage is the most obvious. It is mainly manifested in short tuft, obvious cracks in root and stem, wrinkled and small heart leaves, thick and brittle leaves, dry old leaves, no new root growth, root tip necrosis, less flowering and less fruit, and no empty fruit.
The leaves of the peanut are short of green and green, and the loss of green part occurs in the tissue between the veins, forming the yellow green and orange leaf spot, and the leaf edge is bent to curl and wither, and even necrosis. Mature leaves and leaves, with gray and blue wrinkles on the tip, or necrotic spots, and leaves and petioles. The deficiency of the leaves is first in the old leaf to the new leaf, some growth point is necrotic, the flowering is too little, the empty shell is more or the grain is not full. The root nodules are less and small, the nitrogen fixation ability is weak or no, the growth of the peanut is inhibited, the plant is small, and the leaves are green due to the lack of nitrogen. In conclusion, the boron and the micro-fertilizer have a good effect on the problems caused by the boron deficiency and the environmental pollution in the later stage of the peanut, and has a certain effect on the fertilizer due to the deficiency of other elements, and has no effect on the later physiological early senescence caused by the diseases and insect pests.
