Control of brown spot perforation of peach leaves
Occurrence regularity: the pathogen overwintered mainly by mycelium on the diseased leaves or in the diseased tissues of the damaged branches. The following spring, with the rise of temperature and the arrival of Rain Water, the bacteria produced conidia. Conidia are transmitted by wind and rain, infecting leaves, shoots and fruits.
The disease is more serious in low-lying, poorly ventilated, wet orchards or rainy years.
Prevention and control methods:
(1) Agricultural prevention and control: reasonable pruning. Make the orchard ventilated and transparent, reduce the humidity of peach orchard, and create conditions that are not conducive to the occurrence of diseases.
(2) artificial prevention and control: sweeping the ground with fallen leaves and fruits, and concentrated burning to eliminate the source of overwintering bacteria.
(3) Chemical control: before the peach tree germinated (bud germination period), the whole tree was evenly sprayed with 4-5 Bomedo stone-sulfur mixture, or 1-Rutl 100 Bordeaux solution, 40% formearsine wettable powder 100-fold solution, to eradicate the source of bacteria that overwintered on the branches. Starting from peach calyx removal, spray 65% Dysen zinc wettable powder 500x liquid, or 70% mancozeb wettable powder 500x liquid, or 75% chlorothalonil wettable powder 500x 600x liquid, or 50% isomide wettable powder 1500 times liquid, or 50% sulfamethoxazole wettable powder 1500 times liquid every 10 to 14 days.
- Prev
Prune early and middle ripe peaches in time after picking
Early and middle ripening peach trees are in the high temperature and rainy season after fruit harvest, with large shoot growth and strong ability to form secondary shoots, which is easy to cause canopy closure in the upper part of the crown, poor ventilation and light permeability in the inner chamber, affecting flower bud differentiation and pest control, and is not conducive to the improvement of yield and quality in the coming year. After fruit harvest, combined with fertilizer and water management, reasonable pruning can promote branch enrichment and flower bud formation, lay the foundation for high yield in the following year, and inhibit the outward movement of fruit parts. The specific pruning methods are as follows: retract overlapping branches and cross branches in time after fruit harvest, and remove overdense and weak branches and the upper part of the crown.
- Next
Three methods of storage and preservation of fresh peach
Refrigerated. Peach is easy to suffer from freezing injury in low temperature storage, and there is a risk of freezing at-1 ℃. Therefore, the suitable storage temperature of peach is 0 ℃, and the suitable relative humidity is 90%-95%. Under this storage condition, peaches can be stored for 3-4 weeks or more. However, when the peach is stored at low temperature for a long time, the flavor will gradually fade, and the long-term cold storage will cause freezing injury and browning of the flesh, especially when the peach is ripe in the high temperature environment, the pulp will become dry, spongy and soft, and the pulp around the core will brown obviously. In the freezer.
Related
- Moge, come on! The staff of the peasant association in the producing area of cantaloupe were frightened when the crowd gathered.
- Causes and Solutions of low Fruit setting rate of Apple
- Symptoms and control measures of passion fruit virus disease
- Fruit growing lesson: how do apple orchards keep high yields?
- Can you build orchards in the mountains? What are the pros and cons?
- How to manage the coloring period of Crisson grape?
- This paper introduces the processing technology of two kinds of fig products.
- How much is a month for retired teachers in rural areas by 2020?
- How can strawberry planting increase sugar content? We should pay attention to management in many aspects.
- What are the cultivation techniques on how to improve the yield of golden fruit?