-
How can aphids in cornfields be controlled effectively?
How to control aphids in cornfields? Please explain the methods. Corn aphids, commonly known as "greasy bugs" or "honey bugs", harm not only corn but also crops such as sorghum and barley. They pierce and suck plant sap. Aphid numbers are very low at the seedling stage, but surge during the ear stage, secreting large amounts of "honeydew", which forms a black mold-like layer on the leaves, affecting photo...
-
How can weeds be effectively controlled during soybean cultivation?
How do you control weeds when growing soybeans? The main weeds in soybean cultivation include monocotyledonous weeds such as crabgrass, barnyardgrass, goosegrass, lambsquarters, and foxtail; broadleaf weeds include redroot pigweed, eclipta, copperleaf, and velvetleaf. Summer soybeans are usually sown in June, during the hot and rainy season, when weeds emerge aggressively, at high density, grow vigorously, and are diverse in species, easily forming a weed infestation. Generally, weeds begin to emerge 5 days after soybean sowing, and the entire weed emergence period lasts about 60 days, which is extremely unfavorable for high soybean yields. For this reason, accurately mastering chemical weed control techniques is crucial.
-
What diseases need to be prevented and controlled when growing Lilium brownii?
What diseases need to be prevented and controlled when growing Lilium brownii? The diseases to be prevented and controlled when growing Lilium brownii are: Leaf blight: if yellow-brown and red-brown oval lesions appear on the leaves, spray with 1000 times thiophanate-methyl wettable powder, 50% iprodione wettable powder 1500 times solution, or 50% procymidone...
-
How should ginseng damping-off disease be prevented and controlled?
How is ginseng damping-off disease prevented and controlled? Ginseng damping-off disease occurs at the base of the stems of seedlings, mostly underground at the transition zone between dry and moist soil 3-5 cm below the surface. Control methods: 1. Disinfection of "transplanting stock": use 25% fludioxonil suspension seed coating at 5-20 times dilution to mix with seeds, or 50-100 times dilution to dip the "transplanting stock" to kill the pathogens carried by the seeds...
-
How should pests and diseases of Paris polyotphylla var. yunnanensis seedlings be controlled?
How should pests and diseases of Paris polyphylla var. yunnanensis seedlings be controlled? Please provide an introduction to the methods. For pests and diseases at the seedling stage of Paris polyphylla var. yunnanensis, the following methods can be used for control: 1. Pest control. The main pests at the seedling stage are cutworms, white grubs, and others. For cutworms and white grubs, use 180-200 g of 90% trichlorfon crystals per mu, mix with 8-10 kg of roasted rice bran to make a poisonous...
-
What pests and diseases need to be controlled in cotton planting in July?
What pests and diseases need to be controlled in cotton in July? Please introduce the control methods. The pests and diseases that need to be controlled in cotton in July are as follows for reference: 1. Cotton fusarium wilt and verticillium wilt: in the Lianghe and Caobuhu cotton areas, the average incidence rate is 10-25%, and in some fields it reaches as high as 50%. There is more heavy rain in July, and the sources of the pathogen are widespread, which favors the spread and damage of the disease. Control...
-
How are pests and diseases controlled during the flowering and boll stage of cotton cultivation?
How are pests and diseases controlled during the flowering and boll stage of cotton? Please advise. For the flowering and boll stage of cotton, the following methods can be used to control pests and diseases: First, the occurrence is severe and there are many species. According to forecast analysis, this year cotton pests and diseases will occur at a moderate-to-severe level overall, and in some areas will range from severe to outbreak level. In particular, during the flowering and boll stage, multiple pests and diseases will overlap and cause damage, posing a threat to...
-
What diseases need to be prevented and controlled in white fungus (Tremella fuciformis) cultivation?
What diseases need to be prevented and controlled in white fungus cultivation? Please give an introduction. The diseases that need to be prevented and controlled in white fungus cultivation are: 1. Powdery mildew, also called white rot, the pathogen is Acremonium. Control methods: strengthen ventilation and reduce humidity in the mushroom house; when young fungi appear, spray lime-sulfur mixture, and harvest early, scrape off with a sharp knife including the roots, the fungus base can be smeared with...
-
What pests need to be controlled during the cultivation of white fungus?
What pests need to be controlled when cultivating white fungus? Please explain the control methods. The pests that need to be controlled when cultivating white fungus are: 1. Fungus gnats, mainly small fungus gnats. Control measures: regularly clean up the environment and spread lime powder for disinfection; install screen mesh on doors and windows, and regularly spray pyrethrum liquid or 2000-fold dilution of Yitaibao on the mesh; install blacklight lamps inside the room to trap and kill them...
-
What pests and diseases need to be controlled during the cultivation of Angelica dahurica?
What pests and diseases need to be controlled when growing Angelica dahurica? Please explain the control methods. The following pests and diseases need to be controlled in Angelica dahurica cultivation: 1. Diseases: Diseases occur relatively rarely in Angelica dahurica production, but gray leaf spot and leaf spot sometimes occur. This disease is caused by a type of imperfect fungus among the fungi, and mainly harms the leaves. The lesions are initially dark green...
条件筛选