Fungal perforation of peach
[symptoms]
The leaf is infected, the primary round or subcircular spot, the edge is purple, slightly ringed, the size is 1-4 mm; in the later stage, the gray-brown mildew grows on the disease spot, the middle part dries off, forms the perforation, the perforation edge is neat, when the perforation is many, the leaf falls off. New shoots and fruits are infected, and the symptoms are similar to those of leaves.
[morbidity regularity]
[regional hazard]
[integrated prevention and control]
⑴ scavenged the bacterial source. Cut off the diseased branches in time, thoroughly remove the diseased leaves, burn or bury them deeply. Before peach trees sprout, spray 300 times of 80% pentachlorophenol sodium once. If you need to control overwintering pests, you can add 3-5 Baumetu stone sulfur mixture to use. It is best when the peach bud scale is enlarged, but the green and delicate tissue is not exposed.
In early spring, ⑵ sprayed 50% thiophanate methyl wettable powder 500x solution or 70% mancozeb dry powder 500x solution, 50% carbendazim wettable powder 1500 fold solution, 1V 1V 100g 160x Bordeaux.
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Apricot (apricot)
Plum genus of Rosaceae, perennial deciduous fruit trees, trees or shrubs, also known as common apricot. Scientific name PrunusarmeniacaL. Apricot is native to China. Apricot was cultivated 2600 years ago. The "Silk Road" spread to Iran, Armenia, Greece, Rome and other countries along the Mediterranean in the 2nd century BC, to Japan in the 10th century, and to Europe and America after the 18th century. In 1988, the world's total output of apricot was 2.112 million tons, mainly in Asia. The cultivation of apricot in China is most concentrated in the provinces of the Yellow River basin. Tree height 6
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Crisp pear
Formerly known as Dongning No. 5, bred by Mudanjiang Institute of Agricultural Sciences in Heilongjiang Province, parent Apple Pear X Qingmei Shisheng. The fruit is nearly round, light green and yellow at harvest and yellow after storage. The average weight of a single fruit is 320 grams, with a maximum of 685 grams. The flesh is white, the flesh is crisp, sweet and sour, the flavor is strong, and the flavor is better than apple pear. Mature at the beginning of October. The pericarp is thick, resistant to friction, does not turn black, and is extremely resistant to storage. it can be stored until May of the following year and bear fruit in 2023 after planting. Strong cold current resistance, can be cultivated in Mudanjiang area of Heilongjiang Province and most areas of Jilin and Inner Mongolia, with high resistance to scab,
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