-
Symptoms of Herbicide Damage in Schisandra chinensis and Remedial Measures
Symptoms of Herbicide Damage in Schisandra chinensis and Remedial Measures
-
Frost damage prevention and control methods and key technical points for Schisandra chinensis
1. Disease symptoms Frost damage of varying severity occurs every year in the Schisandra chinensis production areas of Northeast China. In mild cases, the branches and shoot tips are frozen; in severe cases, the entire plant dies. Affected leaves initially show irregular small spots, which over time merge together and develop into mottled, uneven large patches; the leaves fade, and the leaf margins dry up. In the later stages of the disease, the young tender shoots suffer severe water loss and wilting, the tissues dry out and become necrotic, the leaves dry up and fall off, and the tree vigor declines. The first factor is the influence of temperature: after Schisandra chinensis buds break in spring, the nighttime temperature sometimes drops sharply, and water vapor condenses
-
Occurrence and Damage Characteristics of the Bridgeworm Pest on Lingzhi
The bridgeworm (Noctuidea) belongs to the family Geometridae. The lingzhi bridgeworm of this family (name to be determined) is an important pest damaging lingzhi. 1. Morphology and habits: The adult is 12 mm long with a wingspan of 25-28 mm, a small grayish-black moth. The antennae are filiform; the forewings are triangular with 8 black spots along the outer margin and one larger black spot in the middle of the costal margin; the hindwings are grayish-white. The egg is flat and round, 0.6-0.7 mm long and 0.4-0.5 mm wide, milky white initially and grayish-green before hatching. The mature larva is 22-25 mm long,
-
How can Gastrodia elata in the Changbai Mountains of Jilin be protected from frost damage in years with little snow?
Wild Gastrodia elata in the Changbai Mountains of Jilin is mostly distributed in high-mountain broad-leaved mixed forests at an altitude of 500-2500 m with cool and humid summers, deep winter snow cover, high ground coverage, a thick layer of fallen branches and leaves, a relatively shallow frozen layer, and loose soil. Wild Gastrodia elata suffers frost damage in winters with little snowfall and a thick frozen layer, and cultivated Gastrodia elata also suffers frost damage when cold-protection measures are inadequate. In both 1981 and 1982, heavy snow sealed the ground, with winter snow 80 cm thick; when the snow was broken open, the frozen layer on the ground was found to be only 3 cm, so neither wild nor cultivated
-
Remedial measures for Schisandra chinensis after herbicide damage
A farmer friend called 12316 anxiously and said: "The Schisandra chinensis I planted has suffered herbicide damage, what should I do?" The expert answered: If foliar fertilizer is applied before the damage occurs, it can have a certain preventive effect; if the damage has already occurred, applying foliar fertilizer can only prevent the damage from developing further, but the parts that have already been damaged cannot recover. Applying foliar fertilizer now can slow down the damage, but full recovery will be very difficult. Apply foliar fertilizer quickly to control the damage.
-
What causes herbicide damage in Schisandra chinensis
Chemical herbicides are widely used because they have the advantages of low investment, quick results and labor savings. The types of herbicides increase year by year, and the application rate keeps rising. Although the agricultural authorities have done a great deal of publicity and training work specifically for farmers on the use of herbicides, recent surveys by the Northern Medicine Office and the Yichun City Plant Protection Station show that, due to the drift of herbicide spray droplets, the problem of damage of varying degrees to nearby planted Schisandra chinensis is particularly prominent. According to the Northern Medicine Office of Tieli City, Heilongjiang Province, and the Taoshan Forestry Bureau
-
What Harm Can Herbicide Damage Cause to Schisandra chinensis
I. Soil-residual herbicide damage 1. Symptoms. In the middle of the growing season the leaves wilt, recovering their upright posture in the morning and evening; the plants become rigid and stop growing, similar to drought, and the root system develops slowly. 2. Cause. Damage from triazine, sulfonylurea, imidazolinone and similar herbicides. 3. Preventive measures. (1) Any farmland that has been treated with long-residual herbicides such as triazines, sulfonylureas and imidazolinones must not be planted with Schisandra chinensis within two years. (2) If symptoms are found, drench the roots with COMPO Kapco 500 times dilution, and spray the foliage with Bihu, Yecui
-
Damage Caused by Cutworms to Reishi Mushrooms and Its Control Methods
Cutworms belong to the order Lepidoptera, family Noctuidae. They are not only an important pest of agricultural and forestry crops, but also a common pest in the cultivation of edible fungi such as reishi mushroom, silver ear fungus, wood ear fungus, and oyster mushroom. They are widely distributed, but the degree of damage varies. They occur more frequently in outdoor open-field sunken-bed cultivation and plastic greenhouses. Damage characteristics: The larvae feed on the mycelium of reishi mushrooms, inhibiting mycelial growth and affecting fruiting body formation, which reduces reishi mushroom yield and lowers quality. Morphological characteristics: Adult body length 16-23 mm, wingspan 42-54 mm
-
Damage Symptoms and Control Methods of the Ganoderma moth
The Ganoderma moth, scientific name Hapsifera barbata Christoph, belongs to the order Lepidoptera, family Tineidae. Also known as the wood-boring worm, its larvae bore into and feed on polypore fungi. In recent years in the Jiangsu area, it has been found causing damage on the culture media and fruiting bodies of log-cultivated Ganoderma, Armillaria mushroom logs, substitute-substrate Ganoderma and oyster mushrooms. Damage characteristics: on soil-cased Ganoderma, the moth bores into the fruiting body, feeds on the contents, and excretes frass onto the surface of the fruiting body; in severe outbreaks, it can eat the fruiting body completely bare. Morphological characteristics: adult body length 5-
-
What are the control methods for rodent damage to codonopsis (Codonopsis pilosula)?
They begin to damage the seedlings when the seedlings emerge 5 cm above ground. Control methods: (1) Mix 1 part of 3% zinc phosphide with 95 parts of green vegetables, beans, rice, etc.; after mixing well, scatter the bait in the evening in places where rats frequently appear or at their burrows. (2) Mix 1 part of 0.5% bromadiolone evenly with 3 parts of flour, then add cut apple pieces, vegetables, and fried dough sticks (cut into 1 cm pieces) and mix them evenly to coat; this can be placed in the evening in places where rats are frequently active. Alternatively, use 2.5% phorate granules at 1500 g per 667 sq m mixed with 10 kg of fine soil and scatter it along the edges of beds and ridges to drive rats away; be careful not to scatter it on the seedlings.
条件筛选