البياض الزغبي في الخيار وافضل المبيدات

Hi Welcome to Plantix Community. Such type of Interveinal chlorosis if observed on lower leaves then it will be due to Magnesium Deficiency in Cucurbits and if observed on terminal leaves then it is due to Manganese Deficiency in Cucurbits . Also observed symptoms of Leaf Miner Flies . Please click on above link for description of symptoms along with control measures. Thanks