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What are the precautions for using bacterial biological insecticides?
Bt is a bacterial biological insecticide commonly used in vegetable production today, and its effect on controlling Lepidoptera larvae is especially pronounced, but the following points should be noted when using it: 1. Check whether the quality of Bt passes muster; this can be tested by "smelling." Normal Bt products all contain a certain amount of bacteria; when the lid is opened...
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After using which herbicides can you not plant sunflowers in the following crop
If Pursuit (imazethapyr, imazethapyr acid) was used on the previous crop, there must be an interval of 18 months before planting sunflowers; for chlorimuron-ethyl (chlorimuron) there must be an interval of 18 months before planting sunflowers; if the per-hectare rate of nicosulfuron exceeds 60 grams of active ingredient, that is, more than 100 milliliters per mu of 4% nicosulfuron, there must be an interval of 24 months before planting...
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What are the precautions for using herbicides in wheat fields?
What should be noted when using herbicides in wheat fields? How should it be done? Applying herbicides to wheat requires the following strict practices: Strictly select herbicide varieties. There are many types of herbicides, and each herbicide has a certain spectrum of weed control. Some herbicides have a very narrow weed control spectrum, such as barban, which can only control wild oats; MCPA controls shepherd's purse, purslane, and wild oats very well, but its effect on cleavers is very poor; 2,4-D is effective against broadleaf weeds such as amaranth, but ineffective against grass weeds. Farmers should choose the right herbicide according to the most common weed species in the wheat field in order to achieve the desired effect. To control broadleaf weeds, herbicides such as chucaojing, dicaojing, tribenuron-methyl, and baijia mixture can be selected for good control results; however, metsulfuron-methyl, chlorsulfuron, and maicaoer can only be used early in wheat fields under a rice-wheat rotation system. If crops such as cotton, corn, peanuts, or beans are planted after rice, serious phytotoxicity will occur, leading to frequent incidents of almost total crop failure.
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Precautions for Using Plant Growth Regulators on Fruit Trees
What should be noted when applying plant growth regulators to fruit trees? Plant growth regulators are synthetic organic compounds that promote, inhibit or otherwise alter a specific growth process in plants. Although they are trace substances, they can produce noticeable effects. But improper use often backfires, while rational use...
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What are the precautions for using plant regulators?
How are plant growth regulators used on bananas? An introduction is sought: the growth and development, flowering and fruiting of bananas are affected by nutrients and endogenous hormones within the plant as well as external environmental conditions (climate, soil, management level), and during the growth and development process they are often constrained by one aspect, which affects the yield and qua...
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Detailed Guide to Using Plant Growth Regulators
What is the use of plant growth regulators on cucumbers? How can they be used well? 1. They help improve seed vigor and cultivate strong seedlings. (1) Soak cucumber seeds in 0.05 mg/L brassinolide for 24 hours to promote early emergence, uniform emergence, and strong seedlings, and to increase the resistance of sprouts and seedlings. (2) Use Ai...
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Scientific Methods for Using Fruit Tree Growth Regulators
How should growth regulators be used scientifically on fruit trees? Guidance requested. The following methods of using plant growth regulators can be used for reference: 1. Cutting rooting. Mainly used for grapes, kiwifruit, and apple dwarfing rootstocks. The commonly used agents are auxins such as indolebutyric acid (IBA), naphthaleneacetic acid (NAA), and sodium naphthaleneacetate. Methods of use: ①...
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What precautions should be taken when using herbicides in farmland?
How should herbicides be applied to chive seedlings? Please advise. Chives are relatively sensitive to acetochlor, so acetochlor should not be used for soil-closure treatment. After sowing chives and before emergence, prometryn, pendimethalin, and butralin can be used for soil-closure treatment. Among them, prometryn is mainly used to control broadleaf weeds, while pendimethalin and butralin...
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What are the methods for using herbicides on aquatic vegetables?
How can grapes be protected from herbicide damage? Please advise. According to surveys, the harm to grapes from herbicides is also becoming increasingly serious, especially for varieties that sprout and unfold leaves early, such as Vitis amurensis (Amur grape), which suffer particularly severe damage. The leaves of affected plants look as if they have been scalded with boiling water. Later they dry up and fall off, and the clusters also show varying degrees of wilting; in severe cases the berries...
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What should be noted when using chemical herbicides in corn fields?
What should be noted when using chemical herbicides in corn fields? Please advise on the following issues to note when using chemical herbicides in corn fields: 1. Improper selection of variety. Different herbicide varieties have different control effects on weeds. Some farmers do not understand chemical herbicides and mistakenly believe some casual claims, thinking that any herbicide can control weeds, result...
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