-
Which pesticides must not be used in cucumber cultivation?
Which pesticides cannot be used in cucumber cultivation? Please provide guidance. The following pesticides must not be applied when growing cucumbers: Pesticides whose production has been banned: 666, DDT, chlordimeform, fluoroacetamide, arsenic trioxide, ethylmercury chloride, and mercury seed dressings.
-
How can microbial pesticides be used to increase their effectiveness?
What methods can improve pesticide efficacy? Please give guidance. During pesticide application, if an appropriate amount of auxiliary substance is added, the pesticide efficacy can be significantly improved. Adding baijiu: adding 50 grams of baijiu per mu will significantly improve the insecticidal effect. For example, using 40 milliliters of methamidophrin-cypermethrin per mu plus 50-100 grams of baijiu, add to 5...
-
Which herbicides can be used in a jujube orchard? Variety selection and key points for use
Which herbicides can be used in a jujube orchard? What should be noted when spraying herbicides? Weed control in a jujube orchard is an important part of management work. Weeds are intermediate hosts of pests and diseases, and they also compete with jujube trees for fertilizer and water, affecting the growth of jujube trees. The herbicides commonly used in production at present mainly include the following: (1) Diuron: it is a 25% wettable powder, is a...
-
How can herbicides be mixed and applied in sugarcane fields for good results?
How should herbicides be mixed and applied in sugarcane fields? What should be noted? When mixing herbicides for sugarcane, you need to grasp the following principles: First, the weed control spectrum of the two herbicides should differ. Second, fast-acting agents should be mixed with slow-acting agents, and long-lasting agents should be mixed with short-lasting agents. Third, in...
-
What are the remedial measures for herbicide phytotoxicity in tobacco leaves?
What should be done when herbicides cause phytotoxicity to tobacco leaves? What methods can be used to treat it? Some herbicides are widely used for weed control in rice fields or tobacco fields, especially in rice fields, where some farmers often apply high concentrations of herbicides. If tobacco is planted the following season, residual herbicides often cause phytotoxicity to tobacco leaves. In addition, the selectivity of herbicides...
-
What are the functions and uses of plant growth regulators?
What are plant growth regulators used for? Please explain. Ripening agents and swelling agents are both types of plant growth regulators. Plant growth regulators include compounds synthesized to mimic natural substances and natural plant hormones extracted from organisms; they are a class of substances that inhibit and promote plant growth and development, and are currently...
-
Detailed Guide to Using Ethephon: Correct Use of Plant Growth Regulators
How is the plant growth regulator ethephon used? Please explain. Ethephon is a broad-spectrum, low-toxicity organophosphorus plant growth regulator that promotes ripening. It can enter the plant through leaves, bark, fruit and seeds, then be transported to the site of action, where it releases ethylene. It can promote fruit ripening and coloring, promote leaf...
-
What types of plant growth regulators are there? Understanding the classification in one article
What types of plant growth regulators are there? An introduction. Plant growth regulators refer to synthetic chemical substances with hormone activity. According to their growth effects on plants, they are divided into three major categories: plant growth promoters, plant growth retardants, and plant growth inhibitors. Plant growth promoters: mainly include...
-
How are plant growth regulators applied correctly?
How are plant growth regulators applied? Please explain that the spraying method is the most commonly used method. According to growth needs, foliar spraying is mostly used, and there is also localized spraying of flowers and fruits. When spraying, strive for evenness, with fine droplets, and spray until wet. In order to allow plants, especially those with hairs or wax on the leaves, to fully absorb...
-
How are plant growth regulators applied to pollution-free agricultural products?
How are plant growth regulators applied to pollution-free agricultural products? Please explain that plant growth regulators are physiologically active substances that are artificially synthesized or extracted from microorganisms and have a significant regulatory effect on plant growth and development. Here we collectively refer to the trace chemical substances that regulate plant growth and development as plant hormones or plant growth regulators...
条件筛选