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How to supplement iron fertilizer with peanut yellow leaves
When peanuts are deficient in iron, they first appear as chlorotic leaves in the upper part, while the old leaves and veins in the lower part remain green; when iron is severely deficient, the leaf veins lose their green and yellow, and all the new upper leaves turn white, resulting in brown spot necrosis. Dry and fall off. Compared with chlorosis caused by nitrogen deficiency and zinc deficiency in peanuts, the characteristics of iron deficiency and chlorosis in peanuts are prominently manifested in the leaves with no significant changes in size and significant chlorotic chlorosis. The lack of nitrogen caused by yellowing and chlorosis often leaves thinner, smaller plants, dwarf; zinc deficiency can cause large clusters of leaves, yellow and white small leaf spots. Control methods: 0.1%~0.2% ferrous sulfate solution can be used for foliar spray, spraying once every 5~7 days, continuous spraying 3~4 times, and adding 0.1% to enhance foliar adhesion The washing powder to enhance the spraying effect and enhance the absorption function of the foliage.
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