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What are the pollution-free control methods for rice stem borers?
How are rice stem borers controlled in a pollution-free way? Please explain the control methods. Stem borers are the common name for the rice striped stem borer and the rice yellow stem borer. The rice striped stem borer is distributed throughout the country. Besides damaging rice, the rice striped stem borer also damages wild rice stem, corn, sugarcane, reeds and other grass weeds. After overwintering, some larvae can invade broad...
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Causes of Open Rice Glumes Without Grain Filling and Control Methods
What should be done when rice glumes open without grain filling? What solutions are available? Please advise. The phenomenon of rice glumes opening without grain filling after heading occurs in many places, mainly on hybrid indica rice; it basically does not occur on japonica rice. Since this phenomenon occurs in different years, and occurs in fields both with and without pesticide application...
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Symptoms and control methods of southern blight in mint
Isatis root seeds have a lifespan of 2 years. After more than 2 years, the seeds do not germinate; even if a small portion germinates, they soon die, which is called "failure to establish seedlings." Therefore, new seeds should be purchased whenever possible. Generally, newly produced Isatis root seeds (also called daqingzi) are blue-black in appearance, have good gloss and are shiny, with a relatively strong fresh fragrance,...
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Citrus Summer Pruning and Pest and Disease Control Methods
How should citrus be pruned in summer and how are pests and diseases controlled? Please give a detailed introduction. For summer pruning and pest and disease control of citrus, you can refer to the following methods: The main summer pruning methods are: first, for branches extending beyond the canopy, cut them back to 2-year-old branches 0.5 cm--1 cm from the branch group; second, for vigorous upright spring shoots, leave...
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Detailed Explanation of the Causes of Rice Lodging and Control Methods
Why does rice lodge? How should it be prevented and controlled? Please give an introduction. The earlier rice lodging occurs, the greater the impact on yield; in severe plots, yield can be reduced by more than 50%, or even cause total crop failure. Lodging also has a great impact on rice quality, and at the same time increases harvest difficulty. Although rice lodging is related to windy and rainy weather, the main...
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What are the control methods for rice lodging and weed damage?
How to control lodging and weed damage in rice? Please introduce the control methods. Rice is prone to lodging and susceptible to weed damage, and the following countermeasures should be taken: Choose suitable varieties. When selecting direct-seeded rice varieties, besides having good quality, high yield and multiple resistance, they should also have the characteristics of fertilizer tolerance, short stature and moderate tillering. For early rice, medium-maturing varieties should be chosen...
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What are the control methods for rice viral diseases?
How do you control rice viral diseases? Please explain the methods. Rice viral diseases occur in explosive, intermittent and migratory patterns. The severity of rice viral diseases is closely related to the cropping system, the population size and migration patterns of transmission vectors, climatic conditions and cultivation management measures. Control should implement the plant protection policy of "prevention first, integrated control"...
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Control methods for leafminer flies in yardlong bean cultivation
How to control leafminer flies when growing yardlong bean? Here are the methods. Liriomyza sativae belongs to the genus Liriomyza, family Agromyzidae, order Diptera. The pest mainly damages plants as larvae, which bore between the upper and lower epidermis of the leaves and feed on the leaf sap and mesophyll, forming nearly round, punctate, sunken yellow spots on the leaves. After the larvae mine and feed on the mesophyll, they form tunnels. The tunnels are curved...
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Causes of Gastrodia elata Trait Degradation and Control Methods
Degradation of Gastrodia elata traits often manifests as decreased yield of arrow gastrodia, with individuals becoming smaller and slender; a substantial reduction in the yield of rice gastrodia and white gastrodia, which turn ginger-yellow or light brown, with poor stress resistance, and the original yield and traits cannot be fully expressed. The causes are generally as follows: 1. Multiple generations of asexual reproduction. Generally after 5 to 6 generations of asexual reproduction...
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How to Control Whiteflies on Osmanthus Trees? Detailed Practical Methods
Adults and larvae insert their stylets from the underside of leaves to suck the sap of flower plant leaves. This causes leaves to turn yellow and drop. Adults can secrete "honeydew," which nourishes sooty mold pathogens, leading to sooty mold disease, contaminating leaves and branches, disrupting photosynthesis and respiration, causing poor growth of flower plants, yellowing leaves, weakened tree vigor, or death of the whole plant...
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