Control of bacterial spot of soybean
Soybean bacterial spot is a common disease in soybean producing areas, which reduces the percentage of complete grains, 100-grain weight, quality and yield. The disease spot of the leaf is round at first, brown to dark brown, the disease spot expands, the center becomes black, the disease spot is not protruding, and the diseased leaf is easy to fall off. The disease spots of stems and pods are brown and round, and later become spindle-shaped. The seed surface bread is covered with a layer of bacterial mucus, which often appears at one end of the seed and is shaped like "frog eyes". The diseased grains shrunk and the pathogen overwintered on diseased leaves, culms, pods and seeds. Low temperature and heavy rain are conducive to the spread of diseases, and the development of high temperature and drought diseases stops.
Prevention and treatment: pull out the diseased plant in time and bury it deeply, spray it with 250 times 300 times of 2% JK water agent, and spray it every 7 days according to the condition, for a total of 2 or 3 times.
- Prev
Improvement of American high-yield soybean Kaidou No. 4
Kaidou No. 4 is a new soybean variety with high yield and high quality, which was introduced from the United States by Kaifeng Zhengda Company of Henan Province with the support of the State Foreign Affairs Bureau. Limited podding habits. The plant height is 75 cm. There are 6-8 branches per plant. Leaves ovoid. White flowers. The grain is yellow, brown navel and oval. One hundred grains weigh 15.6 grams. It contains 42.1% crude protein and 2.03% fat. Medium maturity, the growth period of summer sowing is 110 days. It is characterized by dense pod setting, high yield, 200 million pods per plant and 250 per mu.
- Next
There are many measures to prevent soybean from falling flowers and pods.
The drop of flowers and pods is an important factor affecting the yield of soybean. Under general cultivation conditions, the shedding number of flowers and pods can account for more than 50% of the total number of flowers, and seriously up to 70%. The shedding of soybean flowers and pods is mainly due to the internal physiological imbalance of the plant and poor external environmental conditions. According to our practical experience, the following measures can be taken to prevent the shedding of soybean flowers and pods: 1. Increase the application of phosphorus and potassium fertilizer, appropriate topdressing nitrogen fertilizer and micro-fertilizer. The application of phosphorus and potassium fertilizer to soybean can reduce the shedding of flowers and pods and promote the fullness of grains. Therefore, on the basis of applying sufficient base fertilizer, every 66 of the time of sowing
Related
- Fuxing push coffee new agricultural production and marketing class: lack of small-scale processing plants
- Jujube rice field leisure farm deep ploughing Yilan for five years to create a space for organic food and play
- Nongyu Farm-A trial of organic papaya for brave women with advanced technology
- Four points for attention in the prevention and control of diseases and insect pests of edible fungi
- How to add nutrient solution to Edible Fungi
- Is there any good way to control edible fungus mites?
- Open Inoculation Technology of Edible Fungi
- Is there any clever way to use fertilizer for edible fungus in winter?
- What agents are used to kill the pathogens of edible fungi in the mushroom shed?
- Rapid drying of Edible Fungi