China's "Walnut King" is 500 years old due to disease and other diseases

The main branch of a walnut tree, which is known as China's "Walnut King" and has a 500-year-old age, has recently undergone retraction, wormholes, black water, and sawdust. At present, experts from the forestry departments of Shangluo City and Luonan County have rushed to the scene to study treatment plans.

See a doctor

Leaves are black and dry

On May 29th, the reporter saw in Jianghe Village, an ancient township in Luonan County, the lush, thick branches of the walnut trees, and even the roots of the trees were revealed on the ground, but there were many branches in the trees. The leaves are dark and dry. According to the villagers, the crown of the "Walnut King" was bigger than it was in the previous years. Later, due to the wind breaking the branches, it lost a third. It can now produce 500 kilos of walnuts each year. jin.

Fan Feng, secretary of the Luonan County Institute of Walnut Research, told reporters that “Walnut King” is more than 500 years old and occupies an area of ​​1.35 acres with an annual output of 350 kilograms. He was identified as a “China” by the State Forestry Administration after actually being verified by experts from the National Fruit Research Group in 1981. The King of Walnuts was listed by the Luonan County Government as an old tree protection list in 2010.

Find cause

Frail roots

It is understood that experts from Shangluo and Luonan counties went to the on-site consultation after learning that the “Walnut King” was ill. Then the experts thought that the main cause of the ‘end of death’ of the “Walnut King” was the over-ageing of the trees and the extreme weakness of the trees. Physiological dysfunction, soil and fertilizer management can not keep up, some large lateral roots fester, loss of vitality, the whole root zone growth and decline, functional decline, leading to the death of the main branch, resulting in a large number of pests and diseases, in particular, a variety of wood pests The harm of drill collars has accelerated the decline of the tree.

Prescribe

Spraying fertilizer for pest control

In response to the problems found, the experts put forward solutions for the simultaneous and comprehensive management of the tree and the trees: First, rehabilitate a large number of main branches withering on the trees to the vitality position, and at the same time rot on the trees. The main root is also shrunk to the root of live roots and sprayed with growth hormone to promote new roots. In this way, in the short term, a large number of leggy branches will be created on the tree to form a new canopy. The second is to constantly increase the tree's fertilizer and water management. The use of soil fertigation, increase organic matter, change soil physical and chemical properties and other measures to ensure the supply of tree water. The third is targeted and effective prevention and control of major pests and diseases. Finally, the absorption and transport functions of the tree are enhanced, and the trees and trees grow synchronously. The whole tree recovers, the trunk skeleton is reasonable, the nutrition growth dominates, the new tree crown begins to bear a lot of fruit, the result is extended, and the aging of the tree is delayed. purpose.

According to forestry experts, treatment measures will be implemented in the near future.

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