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Yam Pest and Disease Control Methods and Key Technical Points
I. Anthracnose. Yams are prone to anthracnose during hot, rainy seasons, and after onset it causes stem blight and leaf drop. In the early stage, black spots appear on the leaves; in the later stage, the leaf color turns black, and the lesions become water-soaked; in severe cases it affects plant growth and causes reduced yield. Control: In the early stage of the disease, spray once every 7 days with 50% Tuzet 600x solution, or 7...
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Diagnosis and Control Methods of Rice Seedling Rot: A Detailed Guide
Rice seedling rot is a general term for seed rot, bud rot and seedling death in rice caused by pathogen infection or non-pathogenic factors. It can be divided into two categories: infectious and non-infectious (physiological). Non-infectious seedling rot is mainly caused by adverse environmental conditions; infectious seedling rot refers to that caused by adverse environmental conditions inducing infection by Pythium, Achlya, Fusarium and other pathogens...
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Pest Control Methods and Technical Key Points for Apricot Cultivation
Apricot seed wasp: Larvae overwinter inside fallen apricot pits or inside pits on branches. Female adults lay eggs between the pit shell and the kernel. The egg-laying hole on the fruit surface is not obvious, slightly grayish-green, and sunken; sometimes apricot gum flows from the egg-laying hole. The egg stage lasts about 10 days. The hatched larvae feed on the kernel inside the pit, causing a large number of fruit drops. Around early June...
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What are the integrated control methods for wheat take-all disease?
Wheat take-all is a typical root disease, capable of infecting wheat from sowing through to harvest. The main sites of infection are the wheat roots and the 1st to 2nd nodes of the stem base. After infection by the pathogen, the roots turn black and rot, losing their ability to absorb water and nutrients, which causes the above-ground parts to dry up and die, resulting in white heads. 1. ...
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What are the control methods for waterlogging damage in wheat?
Boron deficiency symptoms in wheat generally appear first in new growth, showing as terminal buds that easily die back, a long flowering duration, sometimes heading and tillering at the same time, and a prolonged growth period; stamens are poorly developed, anthers are thin and small, empty and not dehiscing, not shedding pollen, pollen is scarce or malformed, the ovary swells horizontally, the glumes do not close front and back, and later wither;...
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How to prevent and control empty burs in chestnut? These methods are very practical
Chestnut "empty burs" is also called "empty bur", and the empty bur rate can reach 30%-90%, affecting chestnut yield. The main causes of empty burs in chestnut are: (1) poor pollination and fertilization during the chestnut flowering period. (2) boron deficiency and available phosphorus deficiency in the soil. (3) the influence of other factors. First, variety: different varieties have different numbers of female and male inflorescences and consume different nutrients, so the empty bur rate also differs. The...
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How to prevent and control chestnut pests? A detailed guide to practical control methods
1. Chestnut gall wasp The chestnut gall wasp, also called the chestnut tumor wasp, has a dark brown head and abdomen in the adult stage, filiform brown antennae, and a swollen, jet-black thorax. It lays eggs inside buds from June to July, and the larvae grow and overwinter inside the buds. In spring, when the buds sprout and produce short shoots, the affected branches or leaf stalks swell into galls (tumors), causing the branches and leaves to wither and die and weakening the tree...
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What are the control methods for chestnut spider mites?
The chestnut spider mite, also known as the conifer small claw mite, damages chestnut leaves, causing them to lose chlorophyll and develop small yellowish-white spots; in severe cases the leaves scorch and turn brown, resulting in reduced yield. It overwinters as winter eggs laid on the leaf scars, rough bark crevices and branching points on the underside of 1- to 4-year-old branches, and begins hatching in late April to early May of the following year, which coincides with the chestnut bud-break period...
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Integrated Pest and Disease Control Methods for Greenhouse Cucumbers in Spring
I. Common Diseases in Spring 1. Downy mildew (1) Occurrence characteristics: persistent (long-term companion), devastating (rapid spread, outbreaks). (2) Occurrence conditions: High humidity: relative humidity above 83% favors disease development, (water droplets or water film on leaf surface), spore germination and invasion. Optimum temperature: 15-20°C. Nutritional status...
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What are the control methods for striped flea beetles on rapeseed?
In recent years, the striped flea beetle has become another major insect pest during the seedling stage of rapeseed in Hongta District. The striped flea beetle is commonly known as the cabbage flea and the soil flea, and its larva is called the white maggot. This insect not only flies but also jumps well, making it difficult to catch on the leaves. When disturbed, it jumps to the ground or to the field-edge ditch, and then quickly flies back onto the leaves to feed. It often gathers in groups on the undersides of leaves to feed,...
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