-
How to prevent and control diseases and pests during the mango flower spike stage? A detailed practical guide
After mango flower spikes are damaged by diseases and pests, the spikes become deformed, flower quality declines, buds drop, flowers dry up, and they cannot bloom or set fruit. The control methods for the diseases and pests harming mango flower spikes are as follows: 1. Anthracnose Anthracnose is the most serious disease harming flower spikes. It strikes as soon as the flower spikes emerge, first appearing as black...
-
Scientific prevention and control methods for cotton Fusarium wilt and Verticillium wilt
Cotton Fusarium wilt and Verticillium wilt are the main diseases affecting high yield and high efficiency of cotton. Only by correctly identifying the symptoms and taking corresponding measures can yield and quality be improved and benefits increased. I. Cotton Fusarium wilt: This disease can occur at the cotyledon stage, with the first peak of incidence appearing at the squaring stage. At the seedling stage, the symptoms of Fusarium wilt are complex and varied...
-
What are the integrated control techniques for cotton pests and diseases?
Topdressing is an important measure for cotton to set more bolls, set large bolls, reduce shedding, and increase yield. However, if topdressing is not done scientifically, it will not achieve the desired effect and sometimes may even produce side effects. In production, cotton topdressing has the following four key points. First, topdress according to the fertilizer requirement pattern. At different growth stages, cotton has different requirements for fertilizer...
-
How to effectively prevent and control cotton bacterial angular leaf spot
I. Agricultural measures. 1. Prepare the soil carefully, apply sufficient basal fertilizer, ensure adequate pre-planting soil moisture, and select disease-resistant varieties. 2. Practice rational crop rotation, plow deeply and irrigate in winter to promote the decomposition of diseased plant residues. 3. During the seedling stage, strengthen intertillage, reduce soil moisture, apply less nitrogen fertilizer and more phosphorus and potassium fertilizer, and cultivate strong seedlings. 4. Strengthen cotton field management, drain promptly after rain...
-
Do not relax pest and disease control during the cotton flowering and boll stage
In recent years, the proportion of Bt transgenic insect-resistant cotton planted has accounted for more than 95% of the total cotton planting area in our province. The promotion of insect-resistant cotton has played a strong role in controlling the occurrence and damage of cotton bollworm in cotton fields, but some pests and diseases should be strengthened in control. Judging from this year's situation, the cotton boll stage is a period when multiple pests and diseases occur and cause damage in an interwoven manner, mainly including...
-
Detailed Explanation of Key Techniques for Pest and Disease Control During the Cotton Seedling Stage
During the transplanting period, cotton is often affected by factors such as abnormal climate, weak seedlings, and inadequate cultivation measures, which lead to a long slow-seedling period after transplanting, stiff seedlings that fail to grow, delayed reproductive progress, and reduced cotton yield. The causes of stiff cotton seedlings and their control are described below: 1. Causes 1. Cotton seedlings...
-
How to comprehensively prevent and control cotton seedling diseases? Master these key points
There are many types of cotton seedling diseases, and they cause severe damage. Among them, the most common and most damaging are damping-off and anthracnose. The incidence rate is generally 20%-30%, and in severe cases reaches 50%-90%. Especially with low temperatures and continuous rain in early spring, cotton seedlings grow weakly and emerge slowly, making them highly susceptible to infection by pathogens, causing large numbers of rotten seeds, diseased seedlings...
-
Occurrence and Integrated Control Methods of Water Bamboo Smut
Water bamboo smut is a major disease of water bamboo (Zizania latifolia), mainly affecting the leaf sheaths and the edible swollen stems, leading to reduced yield and quality of water bamboo. The main symptoms and integrated control methods of this disease are briefly described below: 1. Main symptoms: In the early stage of leaf sheath infection, the lesions appear as small dark green round spots, which later develop into oval tumor-like protrusions; in the later stage, the leaf sheaths are filled with black spore masses, causing the leaf sheaths to turn black. When the edible swollen stem is infected, the smut fungus fills the water bamboo tissue, causing the middle to swell and protrude, the edible stem strips to become shorter, and the outer surface to have many longitudinal grooves. It becomes rough, and in severe cases the edible stem is unfit for consumption.
-
Symptom Identification and Control Methods of Rice Blast Leaf Spot on Water Bamboo
Rice blast leaf spot is a major disease of water bamboo, widely distributed and commonly occurring, found in all water bamboo growing areas, with more severe incidence in summer and autumn, diseased plants often reaching 80%-100%, significantly affecting water bamboo production. [Symptoms] This disease mainly affects the leaves. The lesions initially appear as small brown necrotic spots, which later develop into nearly oval to spindle-shaped...
-
Identification Methods and Control Techniques for Rice Sheath Blight in Water Bamboo
[Symptom Characteristics] Water bamboo blast, also known as water bamboo gray heart disease, mainly infects the leaves. Leaf lesions fall into 3 types: acute, chronic and brown spot. Acute-type lesions are round-dot shaped, dark green, with a grayish-green mold layer (conidiophores and conidia) on the back of the lesion that is relatively obvious; their appearance is a precursor to a water bamboo blast epidemic. Chronic-type lesions are nearly spindle-shaped, ...
条件筛选