Method for preventing old citrus tree stump heads from sprouting tillers

Abstract

The invention belongs to the field of preventing tillers of old citrus tree stump heads, and particularly relates to a method for preventing tillers of old citrus tree stump heads, which comprises the following steps: step 1, sawing the stump heads by using a saw or chopping the stump heads by using an axe, so that the surfaces are as flat as possible, the whole stump heads are kept 10cm away from the ground, and fresh sections are exposed; step 2, brushing glyphosate (not diluted) at the saw bite of the tree stump by using a brush; thirdly, a 15S black plastic film is adopted for pile head covering (0.7 m * 0.7 m); 4, covering soil with a film, and treading tightly. The method solves the problems that the prevention and treatment effect is reduced due to different reasons in production, for example, lime powder and herbicide can only effectively kill tissues at wounds of stumps, and the stumps can germinate new tillers after one year; and the fire burning effect is unstable, and the health of fruit farmers is easily harmed due to improper operation.

Description

Technical Field

[0001] The invention relates to the technical field of preventing tillering from old citrus tree stumps, in particular to a method for preventing tillering from old citrus tree stumps. Background Art

[0002] my country is a major citrus producer, with a history of over 4,000 years of citrus cultivation. With a diverse array of varieties and abundant resources, it also boasts the world's largest citrus cultivation area. According to statistics, in 2017, my country's citrus planting area reached 2.58 million hectares, and its production reached 38.1678 million tons, both ranking first in the world. In recent years, frequent outbreaks of Huanglongbing (Huanglongbing) in citrus-producing areas have led to the removal of many orchards. In practice, farmers typically use a saw to cut off the aboveground portion of a tree 20-30 cm above the ground, leaving the main trunk (known as the stump) in the orchard. These stumps typically retain a certain level of vitality, allowing new shoots to sprout again in the spring or autumn of the following year. New shoots sprouting from the stumps left behind after Huanglongbing removal are also infected with the virus and provide a rich food source for psyllids, making them a significant source of Huanglongbing transmission and outbreak in orchards. Repeated manual eradication requires a lot of manpower, and the wounds left by erasing can easily spread orchard canker. Therefore, it is necessary to develop an efficient and applicable method to prevent new suckers from sprouting from old tree stumps.

[0003] Existing methods to prevent old tree stumps from dying include lime powder, herbicides, and fire. However, in production, the prevention and control effects will decrease due to different reasons. For example, lime powder and herbicides can only effectively kill the tissue at the wound of the stump, and the stump will sprout new suckers a year later; while the effect of burning is unstable and it is easy to endanger the health of fruit farmers due to improper operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preventing suckers from sprouting on old citrus tree stumps, which solves the problem that the prevention and control effect is reduced due to different reasons in production. For example, lime powder and herbicides can only effectively kill the tissue at the wound of the stump, and the stump will sprout new suckers one year later; while burning has unstable effects and is easy to endanger the health of fruit farmers due to improper operation.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for preventing old citrus tree stumps from sprouting, comprising the following steps: Step 1: Use a saw or an axe to flatten the pile head, making the surface as flat as possible. Keep the entire pile head 10 cm above the ground, exposing the fresh cut surface. Step 2: Use a brush to apply glyphosate (undiluted) to the sawed edge of the tree stump; Step 3: Use black 15S plastic film to cover the pile head (0.7m*0.7m); Step 4: Cover with soil and film, and trample it tightly.

[0006] Compared with the prior art, the present invention has the following beneficial effects: The present invention solves the problem that the prevention and control effect is reduced due to various reasons in production. For example, lime powder and herbicides can only effectively kill the tissue at the wound of the tree stump, and the tree stump will sprout new tillers after one year; while burning has unstable effects and is easy to endanger the health of fruit farmers due to improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is an operational flow chart of preventing new tillers from sprouting from old tree stumps according to an embodiment of the present invention; Figure 2 This is a diagram showing the effects of different treatments on preventing new tillers from sprouting from old tree stumps according to embodiments of the present invention. DETAILED DESCRIPTION

[0008] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0009] A method for preventing old citrus tree stumps from sprouting, comprising the following steps: Step 1: Use a saw or an axe to flatten the pile head, making the surface as flat as possible. Keep the entire pile head 10 cm above the ground, exposing the fresh cut surface. Step 2: Use a brush to apply glyphosate (undiluted) to the sawed edge of the tree stump; Step 3: Use black 15S plastic film to cover the pile head (0.7m*0.7m); Step 4: Cover with soil and film, and trample it tightly.

[0010] Implementation Cases: The method of the present invention has an application effect on preventing new tillers from sprouting from the stumps of 18-year-old sugar orange trees after they are felled.

[0011] Materials and Methods: The study was conducted at the Chu Orange Manor in Jiasa Town, Xinping County, Yunnan Province, targeting 18-year-old rock sugar oranges. Due to yellowing of the orange trees in 2020, 5,000 high-yielding trees were removed, leaving a large number of old tree stumps. On March 7, 2022, 35 stumps of relatively uniform thickness were selected and subjected to the following seven treatments: Treatment 1: black film covering (stumps were directly covered with black 15S film and covered with soil); Treatment 2: glyphosate + black film covering (sawed or cut stumps were coated with glyphosate technical, then covered with black 15S film and covered with soil); Treatment 3: low-salt whitewash (lime:salt = 3:1); Treatment 4: high-salt whitewash (lime:salt = 1:1); Treatment 5: torch burning (burning time 15 minutes); Treatment 6: glyphosate (stumps and bark were coated with glyphosate technical); and Treatment 7: hexazinone (stumps and bark were coated with hexazinone technical). Five stumps were used for each treatment, and statistical observations were conducted on April 21 to check the activity of the old tree stumps under different treatments.

[0012] Implementation results: The degree of necrosis of the stump and internal tissue varied with different treatments. Treatment 1 had the worst effect, with the saw cut tissue showing high activity and wound healing. Treatment 2 had the best effect, with the bark dying and the tissue within 2 cm of the bark losing activity. The other treatments showed similar results, with the wounds all showing signs of drying up, but the tissue within 2 cm of the bark still showing high activity, and some stumps were able to sprout new tillers. Specific results are shown in Figure 2 .

[0013] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for preventing suckers from sprouting on old citrus tree stumps, characterized in that: The steps include: Step 1: Use a saw or an axe to flatten the pile head, making the surface as flat as possible. Keep the entire pile head 10 cm above the ground, exposing the fresh cut surface. Step 2: Use a brush to apply glyphosate (undiluted) to the sawed edge of the tree stump; Step 3: Use black 15S plastic film to cover the pile head (0.7m*0.7m); Step 4: Cover with soil and film, and trample it tightly.

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