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Deciduous tree Paulownia purchase price, sapling price, and flowering and leaf-fall times
Paulownia is also called downy paulownia, smooth paulownia, Lankao paulownia, catalpa-leaf paulownia, white-flowered paulownia, and Taiwan paulownia. It is cultivated or wild, and some regions are introducing it. So what is the purchase price of paulownia? How much is one sapling? When does it flower and drop its leaves? How is it planted? From the Changsha building materials market we learned
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Market|Vegetable prices that were once ridiculously high have recently fallen noticeably. With plenty of rainy weather, leafy vegetables are being shunned by vendors
Market|Vegetable prices that were once ridiculously high have recently fallen noticeably. With plenty of rainy weather, leafy vegetables are being shunned by vendors
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What are the control methods for rice bacterial leaf streak?
Rice bacterial leaf streak, or rice fine stripe disease for short, is an important disease in rice production in China. Its pathogen belongs to the genus Xanthomonas, and the bacteria mostly enter through the leaf stomata; symptoms can appear at any growth stage of rice. The lesions are short, fine, narrow stripes, with the striping appearing between the leaf veins. When held against the light, the lesions appear semi-transparent and water-soaked, turning red later; the bacterial masses on the stripes are very numerous, especially on the underside of the leaf, and are not easily dislodged when dry. Because hybrid rice still lacks disease-resistant combinations, and because the disease occurs over a wide area with an uneven distribution, this creates great difficulties for seed quarantine;
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Green copper emulsion is highly effective against rice bacterial leaf streak
In an average epidemic year, the control efficacy reaches 85-91%, which is 10-15 percentage points higher than that of Japanese-made chlorothalonil. Method of use: in an average epidemic year, spraying twice is sufficient. The first spray is applied at stages 2-4 of young panicle differentiation in rice; 7 days after treatment the disease tends to stabilize, new acute lesions decrease significantly, and the original lesions stop developing after turning yellow. The second spray is applied 10 days later, using 100 mL of 12% green copper emulsion per mu each time, diluted 500-600 times for spraying. After 20 days, the rice leaf color turns noticeably greener, and the newly emerged flag leaf and the second leaf from the top have no
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Is copper hydroxide effective for treating rice bacterial leaf streak?
How effective is copper hydroxide for treating rice bacterial leaf streak? How many applications are needed? Please answer objectively. Thank you for your question. The answer is as follows: Copper hydroxide can control rice bacterial leaf streak, bacterial leaf blight, rice blast, sheath blight and rice false smut, etc. Before or at the early stage of disease onset, spray with a 53.8% dry suspension concentrate at 900-1100 times dilution, with 2 consecutive applications.
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What are the control methods for the rice leaf roller?
Rice leaf rolling is caused by the rice skipper and the rice leaf roller. For controlling the rice leaf roller, 34% profenofos-fluorine emulsifiable concentrate is a new-generation insecticide. This product is a new compound ultra-long-acting insecticide with a broad insecticidal spectrum and stable efficacy. Field trials show that spraying 50 ml per mu diluted in 40 kg of water, with a treatment interval of 23 days, achieves a control effect of over 95%, requires 2 fewer applications than conventional pesticides, reduces pesticide cost by more than 50%, and can save 2/3 of labor, truly delivering labor savings, cost reductions, and improved quality and efficiency.
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What are the control methods for the rice green leafhopper?
Scientific name Inazuma dorsalis (Motschulsky), synonym Recilia dorsalis (Motschulsky), belonging to Homoptera, family Cicadellidae. Distributed in the rice-growing regions south of the Yellow River. Hosts include rice, corn, sorghum, millet, sugarcane, wheat, barley, etc. Occasionally damages sesame, citrus, etc. Damage characteristics: adults and nymphs pierce and suck sap on rice leaves and leaf sheaths, inhibiting the growth and development of damaged plants, causing leaves to turn yellow or the whole plant to wither.
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How to prevent and control rice bacterial leaf streak?
Rice bacterial leaf streak, or fine streak disease for short, is a bacterial disease caused by the genus Xanthomonas and is one of the domestic plant quarantine pests. High temperature and high humidity favor the onset of the disease; when this coincides with heavy rain, hail or flooding, causing numerous wounds on the leaves, the disease spreads extremely easily. Long-term deep water irrigation as well as excessive and late application of nitrogen fertilizer also make the disease more severe. In mild cases, yield is reduced by about 10%, and in seriously affected fields the yield loss can reach 40%-60%. Damage characteristics: Rice bacterial leaf streak mainly infects the leaves; the lesions initially appear as dark green, water-soaked, semi-transparent
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Symptom Identification and Control Methods for Licorice Gray Leaf Spot
It damages the leaves, forming nearly round brown lesions with gray centers. Control methods: (1) Clear the garden in winter and dispose of plant debris. (2) During the disease period, spray 1:1:120 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution.
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How to treat pig lice? Peach leaf decoction works well
In summer and autumn, pigs are prone to pig lice, which not only affects the pigs' calm and hygiene, but also hinders their growth and development. The method to prevent and treat pig lice is: take 1000 grams of fresh peach leaves, add 2000 milliliters of water and boil, take the cooled filtrate, wash the places on the pig's body where lice are present, and wash continuously twice, then all the pig lice can be killed, and the lice eggs will also be destroyed. If cattle have cattle lice, this method can also be used to kill them.
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