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What are the control methods for zucchini soft rot?
Zucchini soft rot mainly damages the root and stem parts and the fruit (the zucchini itself). During the fruiting stage, the stems and the base of the leaf stalks first become water-soaked; especially at natural cracks or wounds on the root and stem, they gradually soften, the diseased part becomes sunken, and the internal tissue rots, forming a grayish-brown viscous substance with a foul odor. The water in the affected part evaporates,...
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What are the control methods for zucchini brown spot disease?
There are mainly two diseases that can cause stalk rot in zucchini: the first is gummy stem blight. This disease mainly infects zucchini at the stem nodes; the infected area is initially dark brown, then gradually turns black, and the lesion tends to split open, exuding a white gelatinous substance; in the later stage the diseased stem shrivels and splits longitudinally, resembling tangled hemp. The second...
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What are the control methods for zucchini gray mold?
In recent years, the area of zucchini grown in solar greenhouses has been relatively large, and the occurrence of zucchini gray mold often causes tender squash to rot, affecting yield and profitability. Therefore, measures should be taken for integrated control. Grafting for disease prevention. Using Yunnan black-seeded squash (Cucurbita ficifolia) as rootstock and zucchini as scion for grafting can increase zucchini's resistance to...
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What are the control methods for zucchini cottony leak?
Disease characteristics: Zucchini cottony leak mainly damages the fruit, and sometimes damages leaves, stems and other parts. When leaves are affected, dark green, round or irregular water-soaked lesions first appear, and under high humidity they look as if scalded by boiling water. When fruit is affected, oval, water-soaked dark green lesions first appear. Under dry air conditions, the lesions turn...
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Winter Pest and Disease Control Methods for Kiwifruit Orchards
As the cultivated area and fruiting area of kiwifruit continue to expand, the occurrence and damage of pests and diseases are becoming increasingly serious. Winter pest and disease control in kiwifruit orchards can achieve twice the result with half the effort in promoting tree vigor transformation, pest and disease control in spring and summer, and the healthy growth of kiwifruit trees. According to surveys conducted by our station in recent years, the main diseases found so far...
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Early control methods for four onion diseases
The main onion diseases are downy mildew, gray mold, rust and soft rot, and they should be controlled early. Downy mildew and gray mold Downy mildew mainly damages the outer leaves and flower stalks of onions. The suitable temperature for the disease is 10-20°C, and it can occur from April to May or from November to December. At the beginning of the disease, affected plants show oblong or band-shaped sunken lesions on the outer leaves...
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How to prevent and control walnut bacterial blight? These methods are very practical
The pathogen of walnut bacterial blight generally overwinters in twigs or buds, and in the following spring exudes bacterial fluid that spreads via wind and rain, mainly damaging young fruit, leaves and tender twigs. Management methods: 1. Overwintering management. After leaf fall, apply Husu Jiangjun to the trunk and branches to hinder the pathogen from multiplying on the tree body, providing insulation, disinfection and frost protection. At the same time, spray Husu...
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Detailed Explanation of Control Methods for Walnut Bacterial Black Spot
Walnut bacterial black spot mainly damages walnut fruit, with a diseased fruit rate of 10%-40%, causing the fruit to turn black, rot, and drop early, and the walnut kernels to shrivel. In addition, it also damages leaves and tender shoots, with damage rates reaching 20%-40% in some plots. [Symptoms] On affected green young fruit, small brown oil-soaked spots initially appear on the rind...
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Integrated Control Methods and Technical Key Points for Walnut Branch Blight
Walnut branch blight is caused by fungal infection and mainly damages branches and trunks. It occurs in all regions, with a general diseased plant rate of 20-30%, and in severe cases the diseased plant rate reaches over 80%, causing massive branch dieback and directly affecting tree growth as well as walnut yield and quality. Therefore, timely control is necessary to curb the disease and promote tree...
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Control Methods for Sclerotial Root Rot in Walnut Seedlings
Sclerotial root rot, also called southern blight, mostly affects one-year-old seedlings, causing the cortex of the main root and lateral roots to rot, the aboveground parts to wither and die, and sometimes the entire plant to die. 1. Disease symptoms: Under high temperature and high humidity, white silky mycelium is produced at the base of the seedling root collar and on the surrounding soil and fallen leaves, after which small sclerotia grow...
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