The latest prevention and control methods of black heart and black skin of radish
Black heart and black skin of radish is a week-long phenomenon in planting, which seriously affects the yield and quality of radish, and brings great losses to farmers, so what is the reason for black heart and black skin of radish? How to prevent and cure it? Let's learn more about it with the editor.
1. Apply sufficient boron fertilizer
The main cause of radish black heart and black skin is the lack of boron, and to prevent the lack of boron leading to radish black heart and black skin, it is necessary to apply sufficient base fertilizer first. Organic fertilizer not only has all nutrients and high boron content, but also can improve soil structure and physical and chemical properties, improve soil water and fertility, expand root expansion, reduce drought damage, and promote the absorption of boron and other nutrient elements by vegetable crops. Organic fertilizer can be used as base fertilizer or topdressing fertilizer, and the amount of base fertilizer is generally 4000-6000 kg per mu. Topdressing is 1000-2000 kg, and borax can be applied per mu in plots with serious boron deficiency. Topdressing can be mixed with other fertilizers, or foliar fertilizer can be sprayed with 0.2% boric acid or 0.3% borax aqueous solution.
2. Break the soil consolidation
The important reason for the black heart and black skin of radish during soil consolidation is that the soil is hard, hardened and poorly ventilated, coupled with the application of immature organic fertilizer, which will cause intense microbial activity in the soil and consume too much oxygen. cause the root and part of the tissue to lack oxygen and appear black skin or black heart phenomenon. And the best measure to break the soil consolidation is to plough the fine rake, first turn 18-20 cm deep, and then rake it into pieces. When there is stagnant water, the stagnant water should be eliminated in time to avoid soil anoxic hardening.
3. Control black rot
When the black rot occurs, the leaf veins turn black and reticulate, and finally the leaves dry and turn yellow. when the radish fleshy roots are infected, the vascular bundles turn black-brown in the form of radiation, and the heavy ones show dry shrinkage holes. First of all, disease-tolerant varieties should be selected for prevention and control of black rot, and seed drying, soaking in greenhouse and chemical disinfection measures should be taken before sowing. Before sowing in summer, the soil can be deeply ploughed and sunburned, the pathogens in the soil can be eliminated, some pentachloronitrobenzene can be applied, and then a layer of fine soil can be covered. It can be rotated with non-cruciferous vegetables for 2-3 years, which can effectively prevent and control the disease, strengthen field management, timely watering at seedling stage, reasonable squatting seedlings, timely pulling out diseased plants and diseased leaves, and reducing the chance of repeated infection. In the early stage of the disease, agricultural streptomycin sulfate, thiobacillus copper, quinolone and other agents can be used to prevent and cure the disease.
The above is the introduction of the prevention and control methods of radish black heart and black skin. I hope it can help you. If you want to know more about it, please follow us.
- Prev
The latest course of high-yield cultivation techniques of edamame bean
Edamame bean is rich in nutrition and is loved by the broad masses of people, not only can it be eaten directly as cooked food, but also can be sold as soybeans after drying, so it has a very high additional product value. So how to achieve high yield of edamame beans? Let's take a look at it with the editor.
- Next
The latest causes of calcium deficiency in cucumber and the main points of calcium supplement
Cucumber is a common vegetable in our life, and calcium deficiency is also a common phenomenon in the process of planting, which will seriously affect the yield and quality of cucumber. So what is the reason for calcium deficiency in cucumbers? How to supplement calcium? Let's learn about it with the editor.
Related
- A course of planting techniques and methods on how to grow carrots
- How to plant the latest tulips?
- Is it better to pick tea in the morning or in the afternoon? When is the best time for tea to be picked? what is the third or fifth tea?
- Launch Yuanxiao Happy combination Haocha + Tea Yuan healthy Taste
- Penghu Tourism "Fireworks 20 Parade with You"
- 2022 West Lake Happiness holds "Digital Revitalization Voucher" and draws iphone13 and laptop.
- Banqiao Fuzhou social houses are designed to change start-up combined with police elimination to create a safe and livable environment
- The convenient measure of "mechanical weeding" in Xinbei has been abused and the Agriculture Bureau has imposed heavy penalties on the illegal land consolidation.
- Changgeng University Joins Hands with Four Memory Factories to Rescue Memory Talent Shortage
- The list of Taiwan's top 100 MVP managers is listed by the Director-General of the Farmers' Association of Sanxia District.