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What are the control methods for purple root rot of Astragalus membranaceus?
How to control purple root rot of Astragalus membranaceus? Please explain the methods. The pathogen of purple root rot of Astragalus membranaceus is a kind of basidiomycete fungus, which mainly damages the underground roots. It first occurs on the underground fibrous roots, then spreads to the lateral roots and the main root. In the early stage of the disease, a layer of white thread-like material can be seen wrapped around the roots; as the disease develops, it turns purplish brown and...
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Astragalus Planting: Fertilization and Pest Control Methods
How do you fertilize and control pests when planting astragalus? Please help explain the methods. For astragalus fertilization and pest control, you can refer to the following methods: 1. Fertilization management. Astragalus prefers fertile soil, so in addition to applying sufficient base fertilizer, it also needs topdressing 2-3 times each year. The first time, after the seedlings are complete or after greening resumes, apply farmyard manure as topdressing; the second time, after intertillage and weeding, apply pen...
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What are the control methods for root rot in red sage (Salvia miltiorrhiza)?
How do you control root rot in red sage? Please provide an introduction. Red sage root rot: 1. Harmful symptoms: Red sage root rot occurs in hot, rainy seasons and harms the plant's roots. In the early stage, only a few roots or part of the underground rhizome become diseased first, gradually spreading to the entire root system. After the roots are damaged, wet rot occurs, the outer skin turns black,...
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What are the control methods for root-knot nematode disease in Danshen (Salvia miltiorrhiza)?
How to control root-knot nematode disease in Danshen (Salvia miltiorrhiza)? What are the symptoms of root-knot nematode disease in Danshen (Salvia miltiorrhiza)? The control methods for root-knot nematode disease in Danshen (Salvia miltiorrhiza) can be referred to as follows: 1. Damage symptoms. The disease damages the roots of Danshen (Salvia miltiorrhiza). The affected taproots, lateral roots and fibrous roots all bear tumor-like root galls; the taproots and lateral roots become thinner, and the fibrous roots increase in number. On the galls...
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Symptom Identification and Control Methods of Sorghum Charcoal Rot
What is sorghum charcoal rot? How is it controlled? An introduction is given below. Symptoms of sorghum charcoal rot: The disease can occur throughout the entire growth period of sorghum. Infection with this disease can cause seedling blight or charcoal rot of the roots and stalks. Roots infected initially show water-soaked lesions, which later turn black, the internal tissues collapse, and the cortex rots and spreads to the lateral roots. Infected stalks cause plants to mature early, with small heads and shriveled grain...
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Summer control methods for the soybean stem miner fly
How to control the stem miner fly when planting soybeans in summer? Please give an introduction. The bean stem miner fly belongs to the order Diptera and the family Agromyzidae, and is a widely distributed boring pest of legumes. The newly hatched larvae enter through the leaf veins and the tender parts of the leaf stalks, then bore into the branches and main stem to feed on the pith and xylem. If control is not timely, in light outbreak years the damage rate of soybean plants...
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A Complete Guide to Weed Control Methods in Summer Soybean Fields
How to control weeds in summer soybean? Please provide methods. After summer soybean sowing, soil and climatic conditions favor weed germination and growth, and if chemical control is not carried out in time, it can easily lead to a weed infestation. In production, herbicides should be applied early for control based on the weed occurrence characteristics in summer soybean fields and the properties of the herbicides. Soil-incorporated treatment: after land preparation,...
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Common Pests and Diseases in Jasmine Cultivation and Their Control Methods
What pests and diseases should be controlled in jasmine cultivation? The diseases that need to be controlled in jasmine cultivation include: jasmine stem rot and southern blight; the pests include: jasmine leaf borer, scale insects, and red spider mite (Tetranychus cinnabarinus). (1) Jasmine stem rot. This disease occurs at the base of the stem. In the early stage, the lesions are brown spots with a water-soaked appearance. The lesions expand longitudinally into...
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What are the control methods for the eucalyptus giant caterpillar?
How do you control the giant caterpillar on eucalyptus? Please note that the eucalyptus giant caterpillar can be controlled by referring to the following methods: 1. Manual capture: During the period when adults emerge in large numbers and lay eggs, promptly capture and kill the adults and egg masses in the orchard. During the larval damage period, the larvae generally rest quietly on the lower part of the host branches and trunk during the day, making them very easy to spot. At this...
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How to control termites in eucalyptus? All the practical methods are here
How to control termites in eucalyptus? Please give an introduction. The common pest of eucalyptus is the soil-dwelling termite, mainly Macrotermes barneyi, followed by Macrotermes annandalei. Although other termite species are found in the forest, they are not enough to cause damage. 1. Damage pattern. In young eucalyptus plantations, termites first damage the root collar, then gradually move from the soil layer...
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