Symptoms of dry edge disease of apricot leaves
Apricot leaf dry edge disease is a common physiological disease of apricot trees. It occurs in all apricot producing areas, especially in the north.
Dry edge disease of apricot leaves damages only leaves. Symptoms usually appear first from the leaf margin, the initial edge dry, sometimes dry parts fall off. The lesion gradually extended into the leaf, and the boundary between the edge and the healthy part was obvious. The damaged leaves curl to the front and often fall early.
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Occurrence regularity and control measures of Luan Shu jujube tortoise wax medium
Jujube tortoise wax (CeroplastesjaponicusGr) belongs to Homoptera, Calyx family, also known as Japanese wax, jujube carapace wax, commonly known as jujube lice. When it occurs in a large area on Koelreuteria paniculata, the branches and leaves of the whole tree are covered with worms, and the attachment of female insects to the branches looks like snow from a distance. The nymphs suck sap on the leaves, and the excrement is covered with the whole tree, resulting in the weakening of the tree and seriously affecting the green landscape. Through two years of investigation and research, the occurrence regularity of the pest was found out, and a satisfactory control method was found. The worm
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Potting round jujube
Variety source: Jinling round jujube is a rare fresh jujube variety found in the investigation of jujube resources in 1993. the century-old mother tree grows on the cold hillside in the west of Liaoning province and still has a high yield. After being selected as the superior line, through nearly ten years of breeding and experimental observation, the genetic performance is stable. In September 2002, it passed the appraisal of scientific research achievements of Liaoning Provincial Department of Science and Technology, and in September 2002, it was approved by the Forest Variety examination and approval Committee of Liaoning Forestry Department. Variety characteristics: the fruit is nearly round, the average weight of single fruit is 26g, and the size of fruit is uniform. The color is deep red and bright
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