Lack of green disease (chlorosis)

the absence of yelorophyte in plant leaves. The blades appear pale green or yellow. Under the conditions of moisture, temperature and lighting, due to the lack of certain essential elements (nitrogen, magnesium, iron, manganese and sulfur, etc.). When nitrogen and magnesium are deficuous, the disease first manifests it in the lower blades of the plant. The former leaves are pale green and yellow in severe cases, while the leaves are still green and yellow between the veins. Nitrogen and magnesium are both chloroerin components. The symptoms of iron deficiency, manganese and sulfur are first manifested in the upper larvae. Iron deficiency and manganese show a lack of green between the veins of the leaves. The former has white leaves in severe cases, while the latter has small yellow spots on the leaves. Iron and manganese are not components of chloroelotin, but indirectly affect the formation of chloroerin.