In the case of iron deficiency, the watermelon is deficient in iron, first showing symptoms on the young leaves at the top of the plant. In the early stage or when the iron deficiency is not serious, the top new leaf miner is chlorotic, pale green or yellowish, and the veins remain green. With the delay of time, the green leaves of the veins become light or disappear due to severe iron deficiency, and the whole leaves are yellow or yellowish white. Remedy: Spray 500-1000 times of ferrous sulfate on the foliage.
In the absence of manganese in watermelon deficiency, the veins of the young leaves are yellowed, the main veins are still green, and then the newly mature large leaves are developed, and the seeds are not fully developed, and the deformed fruits are easily formed. Remedy: Found manganese deficiency, timely spraying with 0.05% ~ 0.1% manganese sulfate solution.
In the absence of zinc in zinc deficiency, the branches are slender, the internodes are short, the leaves are poorly developed, and the leaves are clustered or rosette-like, turning to the back of the leaves, and the tip and leaf margins become brown and gradually scorch. Remedy: Foliar spray EDTA-Zn fertilizer, generally diluted 2000 to 3000 times. Chen Maochun
Website: Diagnosis and Remedy of Watermelon Iron and Manganese Zinc
Ecg Holter Monitor,Veterinary Ecg Holter Monitor,Portable Vet Ecg Holter Monitor,3 Channel Ecg Holter Monitor
Medton Medical , https://www.medton.cn