A New flat Peach Variety-Ruili 20
Ruili 20, a new very late ripening white flesh flat peach variety bred by the Forestry Fruit Tree Research Institute of Beijing Academy of Agriculture and Forestry, was approved in Beijing not long ago.
All kinds of fruit branches of this variety can bear fruit, mainly long and medium fruit branches, and the natural fruit setting rate is high. The fruit development period is about 160 days, and the annual growth period is about 208 days. The average weight of a single fruit is 254.7 grams, and the maximum weight is 350g. The fruit is 5.86 cm in longitudinal diameter, 8.37 cm in transverse diameter and 9.28 cm in lateral diameter; the fruit is flat and uniform; the top of the fruit is sunken, and the top of some fruit is longitudinally split; the suture is shallow, the pedicel is shallow and wide, the background color of the pericarp is yellowish white, and the face of the fruit is purple-red and fluffy. The pericarp is moderately thick and cannot be peeled off. The flesh is yellow and white, there is no red silk under the skin, and it is slightly red near the core. The meat is hard solute, juicy, less fiber, sweet flavor, high hardness and small core. The yield per mu reached 1968 kg in the third year and 2205 kg per mu in the fourth year.
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Prevention and control of jujube mad disease
Jujube mad disease is a destructive disease of jujube. After infection, the jujube tree showed the following abnormal phenomena: 1. The flower organ was anti-ancestral, the pedicel lengthened 3-6 times as much as the normal flower, and the sepals, petals, stamens and pistil grew abnormally, forming light green leaflets. For the diseased trees with strong potential, there will be dwarf twigs in the axils of leaflet leaves, forming clumps of branches. 2. Developing branches, positive and accessory buds and fruiting mother branches germinate and grow many times a year, continuously producing small yellow-green branches and leaves, forming dense branches and clumps, which are not easy to fall off in winter. 3. There are a large number of hidden buds in the dormant state on the whole branch.
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A New Variety of fresh Jujube: early Crispy King
Its main features are as follows: (1) the strong branches in the tree potential are opened at an angle, which is easy to manage and is suitable for the establishment of a garden with medium density. (2) the yield of 2-year-old grafted tree with high yield is about 5 kg, and that of 12-year-old tree is about 50 kg, and the projected yield of crown per square meter is 3.41 kg, ranking first among the tested varieties. (3) the fruit is large and beautiful, with good quality and egg orchard shape, with an average fruit mass of 30.9 grams and a maximum fruit of 87 grams.
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