SU375052A1 - METHOD OF REJUVENATION OF FRUIT TREES - Google Patents

Description

one

This invention relates to agriculture.

Methods are known for rejuvenating fruit trees by awakening to the growth of sleeping buds with pruning.

However, these methods provide low productivity and yield.

The proposed method for rejuvenating fruit trees is characterized in that the fruit trees are sprayed with defoliants after flowering, over the dismissed leaves. Spraying is performed with ammonium nitrate concentration from 2 to 8% for 15-25 days.

This makes it possible to increase labor productivity and increase productivity.

Under the crop year, trees are sprayed with a solution of ammonium nitrate of increased concentration (5–8%) and in longer periods (up to 20–25 days), and for productive ones - of a reduced concentration (2–3%) and in a shorter time - from the end of mass bloom and until its complete cessation.

With this treatment, the leaves are burned, and after 8-10 days, the sleeping buds awaken, the number of growth shoots increases, and the new leaves have a greater value, and therefore the intensity of photosynthesis increases.

According to the inventors, this method provides an increase in productivity by 100–200 times in comparison with mechanical rejuvenation, eliminates the frequency

fruiting, significantly increases the yield, has a destructive effect on many pests and pathogens. In addition, fruit trees at the same time acquire drought tolerance.

In the second year (1970), a fruit harvest of 532 centners per hectare was obtained, in the third year, according to preliminary accounting, a yield of 500-600 centners per hectare was expected and fruit nights for the 1972 harvest were laid.

At the experimental site of defoliation of trees with a 5% solution of ammonium nitrate, 6 ma were performed after the dissolution of all growth buds. After the destruction (burning) of all the leaves, the dormant buds along the entire length of the axes of the skeletal and non-skeletal branches and branches in all parts of the crowns have awakened to growth.

Leaf disease was not observed on the defoliated trees, while on the control trees there was a strong scab lesion on the leaves.

The method of rejuvenating fruit trees with defoliants is productive, low-cost, economical, increases the yield of trees by 1.5 times. 34

The subject matter of the invention is defoliants after flowering, by dissolving. Method of rejuvenation of fruit trees

by awakening to the growth of sleeping buds, from -2. A method according to claim 1, characterized in that

characterized by the fact that, in order to increase 5 spraying, ammonia Selit productivity of labor and yields are produced, a swarm of concentration from 2 to 8% for 15-

Spray fruit trees for 25 days.

375Y52 shims leaves m.