What are the control methods for leaf mold on goji berry trees?
What harm does leaf mold on goji berry trees cause, and how is it controlled? Is there a knowledgeable reader who can help explain? Zhongdi Network has compiled the harm and control methods of leaf mold on goji berry trees, listed below for readers' reference. Harm of leaf mold on goji berry trees: Leaf mold on goji berry trees mainly harms the leaves. Chlorotic yellow spots appear on the upper surface of the leaves, with blurry, indistinct edges, and dark mold spots appear on the corresponding lower surface, also with indistinct edges. Several lesions can merge into patches, or when the mold spots are densely packed, most of the lower leaf surface is covered by mold-like matter, eventually causing the leaves to turn yellow or dry up, making them inedible.
What harm does leaf mold on goji berry trees cause, and how is it controlled? Is there a knowledgeable reader who can help explain?Zhongdi Network has compiled the harm and control methods of leaf mold on goji berry trees, listed below for readers' reference.
Harm of leaf mold on goji berry trees:
Leaf mold on goji berry trees mainly harms the leaves. Chlorotic yellow spots appear on the upper surface of the leaves, with blurry, indistinct edges, and dark mold spots appear on the corresponding lower surface, also with indistinct edges. Several lesions can merge into patches, or when the mold spots are densely packed, most of the lower leaf surface is covered by mold-like matter, eventually causing the leaves to turn yellow or dry up, making them inedible.
Causes of leaf mold on goji berry trees:
The pathogen of leaf mold on goji berry trees overwinters as mycelium on diseased plants or in the soil with diseased plant debris, and spreads via conidia through airflow or rain splash, causing primary and secondary infections. In the Guangzhou area, goji berries are present in the field year-round, and the pathogen can spread and infect repeatedly without a clear overwintering period. Warm, humid, stuffy weather or low-lying, damp, and crowded planting sites favor the disease.
Control methods for leaf mold on goji berry trees:
Method one:Regularly spray foliar nutrients on goji berry trees to promote early and rapid growth of the plants, which helps reduce the incidence of the disease.
Method two:At the early stage of leaf mold on the trees, spray continuously to control the disease. You can spray 40% triadimefon-carbendazim wettable powder at 800-1000 times dilution, or 50% procymidone wettable powder at 1000-1500 times dilution, or 30% copper oxychloride + 70% mancozeb (1:1) at 1000 times dilution, or 40% sulfur-carbendazim suspension concentrate at 600 times dilution, or 75% chlorothalonil + 70% thiophanate-methyl (1:1) at 1000-1500 times dilution, 3-4 times, once every 7-10 days. Spray alternately, with shorter intervals first and longer intervals later.
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