CN109952022B - Method for preventing and treating diseases and pests of tea - Google Patents
Method for preventing and treating diseases and pests of tea Download PDFInfo
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- CN109952022B CN109952022B CN201780071682.7A CN201780071682A CN109952022B CN 109952022 B CN109952022 B CN 109952022B CN 201780071682 A CN201780071682 A CN 201780071682A CN 109952022 B CN109952022 B CN 109952022B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M99/00—Subject matter not provided for in other groups of this subclass
Abstract
The present invention relates to a method for controlling tea diseases and insect pests using heated water without using any agricultural chemicals, and provides a novel method for controlling tea diseases and insect pests which can more effectively control tea diseases and insect pests. The invention provides a method for preventing and treating diseases and insect pests of tea, which is characterized in that heated mist water is contacted with tea leaves, so that the surface temperature of the tea leaves is 45-55 ℃.
Description
Technical Field
The present invention relates to a method for controlling diseases and pests of tea for repelling or controlling diseases and pests of tea trees.
Background
Since various plant diseases and insect pests occur in plantations (nursery garden) such as tea gardens, it is essential to prevent and treat the plant diseases and insect pests for healthy tea plant cultivation, and tea producers have been dealing with the diseases and insect pests by spraying the appropriate kinds and amounts of chemicals at appropriate times.
As for a method for controlling tea by spraying a chemical as described above, for example, patent document 1 (japanese patent application laid-open No. 7-31350) discloses a device for spraying a chemical onto tea trees, which is a device for spraying a chemical onto tea trees in an all-around and efficient manner in a short time in a control operation or a repelling operation of scale insects and the like attached to branches of tea trees, wherein a large number of nozzles are provided so as to protrude from a lower surface of a substantially arc-shaped substrate having a handle portion, and the chemical is supplied to each nozzle.
Further, patent document 2 (jp 7-289057 a) discloses a method for controlling plant diseases and insect pests of tea trees using a tea leaf picking apparatus that moves along a tea ridge (tea ), and that has a picking mechanism for picking tea leaves and a chemical application device for applying a chemical to tea trees as a whole, wherein the chemical application device applies the chemical to picking cuts of the tea trees immediately after the picking mechanism picks the tea leaves.
However, in recent years, there has been proposed a method for controlling pests with no or little use of chemical fertilizers or agricultural chemicals because there is a fear of adverse effects on human health and environmental pollution by a control method using chemicals such as chemical fertilizers or agricultural chemicals. In particular, in tea, about 100 kinds of agricultural chemicals are currently set for tea in japan, and many overseas countries often do not recognize agricultural chemicals or set a very low standard for agricultural chemicals remaining, and therefore, considering tea export, it is urgent to study a control method using no agricultural chemicals.
Therefore, for example, patent document 3 (japanese patent laid-open No. 2016-.
Patent document 4 (japanese patent application laid-open No. 2016-158522) discloses a method for controlling an insect pest and aversion to dampness, which is characterized in that a wetness sensor is provided at a position nearest to the environment in which the insect pest and aversion to dampness is present in a plantation, and water is sprayed to the plantation based on the detection value of the wetness sensor so that the insect pest and the aversion (avoidance) state of the insect pest and/or the state where the insect pest and the dampness hardly survive are present.
As a method for controlling plant diseases and insect pests without using agricultural chemicals, for example, patent document 5 (japanese patent application laid-open No. 2011-212012) discloses a method for controlling plant diseases and insect pests in which a saturated steam flow adjusted to a desired temperature is generated in a treatment space surrounding a plant seedling so as to flow horizontally on the upper side of the plant seedling, and the plant seedling is exposed to the saturated steam flow for a time within a range not damaged by heat.
Non-patent document 1 discloses the following phenomenon: when a plant such as strawberry is brought to a high temperature of 40 to 50 ℃ for several tens of seconds to several minutes, the plant reacts variously to induce resistance to diseases, for example, powdery mildew or the like is less likely to occur.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 7-31350;
patent document 2: japanese patent laid-open publication No. 7-289057;
patent document 3: japanese patent laid-open publication No. 2016-152794;
patent document 4: japanese patent laid-open publication No. 2016-158522;
patent document 5: japanese patent laid-open publication No. 2011-212012;
non-patent document
Non-patent document 1: "wild vegetable information (vegetable information)" No. 2 in 2013 "for disease control of った plant located at the position of" Zuoda "を for disease control of った plants (regarding disease control of plants subjected to heat shock treatment".
Disclosure of Invention
Problems to be solved by the invention
In permanent crops, tea is a special crop characterized by several tea leaves harvested per year. The picking period varies depending on the region, for example, in Jinggang county, first tea is usually picked during the middle ten days of 4 to 5 months, second tea is picked after about 45 to 50 days after the first tea is picked, and then, autumn and winter tea is picked after about 3 months to autumn after the next buds grow.
As described above, tea trees harvested several times in a period of 1 year require several times of control in each picking period, and therefore, when the latter picking period of three or four teas, autumn and winter teas, or the like comes, the agricultural chemical sprayed in the previous tea period may remain, and the kind and concentration of the agricultural chemical contained in the tea leaves may increase. In addition, since the number of uses of agricultural chemicals is increased, the cost may be higher than that of ordinary crops. Therefore, there is a need for an effective and novel method for controlling pests without using pesticides.
Accordingly, the present invention relates to a method for controlling tea diseases and insect pests using heated water without using pesticides, and provides a novel method for controlling tea diseases and insect pests that can more effectively control tea diseases and insect pests.
Means for solving the problems
The invention provides a method for preventing and treating diseases and insect pests of tea, which is characterized in that heated mist water is contacted with tea leaves, so that the surface temperature of the tea leaves is 45-55 ℃.
Effects of the invention
According to the method for preventing and treating the tea diseases and insect pests, the tea diseases and insect pests can be effectively prevented and treated by using the heated water without using pesticides.
Detailed Description
Next, the present invention will be described based on embodiment examples. However, the present invention is not limited to the embodiments described below.
< present control method >
A method for controlling tea diseases and insect pests according to an embodiment of the present invention (referred to as "the present control method") is a method for controlling tea, characterized in that a treatment is performed in which heated mist-like water (referred to as "heated mist") is brought into contact with tea leaves so that the surface temperature of the tea leaves is 45 ℃ to 55 ℃.
(tea as subject)
The tea to be subjected to the control method may be any tea cultivated for the purpose of extracting picked tea leaves or processed tea leaves into a liquid and drinking the liquid. Or tea cultivated for the purpose of eating picked tea leaves.
Specifically, for example, the following teas are cultivated: decocted tea (cooking tea), ground tea, YULU, oolong tea, black tea, and tea for other beverages.
(target diseases and insect pests)
Examples of diseases that can be targeted by the control method include: anthracnose, wheel spot, red leaf spot, net cake disease, white star disease, etc. Examples of insect species of insect pests include: tea lesser leafhopper (hereinafter referred to as dust mite), Leptodermis meyeri, white mulberry scale, tea yellow thrips, tea leaf roller moth, etc. However, the present invention is not limited thereto.
(heating mist)
The water for heating the mist may be tap water, well water, or the like.
If necessary, a drug may be added.
The temperature of the heating mist is preferably adjusted to 45 ℃ to 55 ℃. When the temperature is 45 ℃ or higher, the control of diseases and pests is effective, and when the temperature is 55 ℃ or lower, the occurrence of thermal damage can be prevented.
From the above viewpoint, the temperature of the mist of water in contact with the tea leaves is preferably adjusted to 45 ℃ to 55 ℃, particularly preferably 47 ℃ or higher or 54 ℃ or lower, particularly preferably 50 ℃ or higher or 53 ℃ or lower.
The water may be atomized, that is, heated water may be atomized, or atomized water may be heated. Specifically, examples thereof include: a method of cooling steam obtained by a boiler, a method of spraying fine water droplets into hot air, or the like. However, the method is not limited to these methods.
(method of bringing heating mist into contact with tea leaves or tea trees)
In tea plants and tea leaves, the heated mist is preferably brought into contact with at least tea leaves on the surface portion of the leaf layer, and is also preferably brought into contact with tea leaves on the bud portion to be picked.
By contacting with tea leaves on the surface portion of the leaf layer, conidia or pests of diseases which exist around the shoot and affect the growth or quality thereof can be controlled. Further, the tea leaves are contacted with the shoot part to be picked, whereby the shoot can be directly prevented.
Among them, it is preferable to contact the cut surface of the stem, and it is preferable to contact the young leaves with trichomes (trichomes). Further, it is preferably contacted also with a hardened leaf present below the picking surface, which is generally called "old leaf (mother leaf)", more preferably with a branch, and still more preferably with dry leaf.
The control of alternaria leaf spot can be effectively performed by bringing the heating mist into contact with the cut surface of the stem, and the control of anthracnose can be effectively performed by also bringing the heating mist into contact with the young leaves having trichomes. In addition, by bringing the heated mist into contact with the old leaves or branches, trunk as well, conidia or pests attached to them can be controlled.
Preferably, the heated mist is contacted with the tea leaves and even the tea trees to maintain the surface temperature of the tea leaves at 45 ℃ to 55 ℃.
If the surface temperature of the tea leaves is 45 ℃ or higher, it is effective for controlling diseases and pests, and if it is 55 ℃ or lower, it is possible to prevent thermal damage.
From the above viewpoint, the surface temperature of tea leaves when the heated mist is brought into contact with tea leaves or tea trees is preferably 45 to 55 ℃, particularly preferably 46 ℃ or higher or 53 ℃ or lower, and particularly preferably 50 ℃ or higher or 52 ℃ or lower.
At this time, the surface temperature of the tea leaves can be adjusted by the temperature of the heating mist and the contact time.
The contact time of the heated mist with the tea leaves (referred to simply as "contact time") is preferably adjusted by a relationship with the temperature of the water.
As a standard, it is preferable to adjust the temperature of water in contact with tea leaves and the contact time of water in contact with tea leaves so that the product (A x h) of the temperature (A) of the heating mist and the contact time (h) is 45 ℃ x 6S to 55 ℃ x 15S.
For example, by performing the treatment so that the heating mist of 45 ℃ is brought into contact with the tea leaves within a contact time of 6 seconds or less, it is possible to prevent thermal damage while obtaining an excellent preventive effect. On the other hand, if the contact time is within 15 seconds, the treatment time can be set to the same as that of the conventional prevention and treatment method.
From the above-mentioned viewpoint, the product (a × h) of the temperature (a) of the heating mist and the contact time (h) is preferably 45℃ × 6S to 55℃ × 15S, particularly preferably 46℃ × 6S or more or 53℃ × 12S or less, particularly preferably 50℃ × 3S or 52℃ × 10S or less.
Further, by adjusting the temperature A (. degree. C.) of water in contact with tea leaves and the time h (sec) for bringing the heating mist into contact with tea leaves so that { the temperature A (. degree. C.) of the heating mist-30 ℃ } 2 × { the time h (sec) } 100 for bringing the heating mist into contact with tea leaves is 50 or less, wherein is 10 or more or 40 or less, wherein is 12 or more or 30 or less, a controlling effect can be obtained in a shorter time.
(control treatment period)
From the viewpoint of effective control of anthracnose, alternaria leaf spot, and the like, the above treatment, i.e., the treatment in which the heated mist water is in contact with tea leaves, is preferably performed within 2 weeks, more preferably within 1 week, and even more preferably within 1 day, from the time of picking or pruning of tea leaves.
The above-mentioned picking of tea leaves is not particularly limited as long as it is a picking for harvesting tea leaves. Among them, picking for harvesting first tea or second tea is preferable.
The pruning of the tea leaves means a trimming operation of the picked surface after the tea leaves are picked. The preferred examples of the former include whole branches of first tea or second tea.
In the above description, it is preferable to apply the first tea after picking and before picking of the second tea. However, it may be carried out before the first tea is picked, or after the second tea is picked.
Among them, it is preferable to be carried out during the period of time from the day of picking the cephalo tea to 14 days, more preferable to be carried out during the period of time from the day of picking to 7 days, and even more preferable to be carried out during the period of time from the day of picking to 3 days or less.
Since tea plants are damaged by picking, conidia of alternaria leaf spot may invade from the wound or the like. Therefore, it is preferable to control the anthracnose conidia immediately after tea picking, and to eliminate the conidia of the anthracnose before germination and the floating dust.
In addition, from the viewpoint of preventing the occurrence of anthracnose, dust, etc., it is particularly preferable to carry out the first tea sprout germination in a period of 10 to 25 days from the picking day, and particularly preferable to carry out the first tea sprout in a period of 15 to 20 days from the picking day.
On the other hand, from the viewpoint of preventing the wheel spot disease or the like, since a damaged portion by a blade of a picking machine, which is likely to be a source of the wheel spot disease infection, becomes an infected portion, it is preferable to perform the above-described treatment, that is, the treatment of bringing the tea leaves into contact with the mist of heated water, within 24 hours, 18 hours, and 12 hours from the time of picking or pruning the tea leaves.
< method for producing tea >
When the control method is applied, tea trees are cultivated, and 2-4 time periods and intervals of first tea (3-5 months), second tea (6-7 months), third tea (7-8 months) and autumn and winter tea (autumn) are set for picking.
For example, in the case of the deer island county, the first tea is usually picked from the middle ten days of 4 months to the last ten days of 5 months, the second tea is picked after the first tea is picked for about 45 to 50 days, the next bud grows, the third tea is picked within 40 to 45 days after the second tea is picked, and the fourth tea is picked within 50 to 60 days after the third tea is picked.
The picked tea leaves may be processed into raw tea through the series of steps of steaming in a raw tea factory to inactivate oxidase contained in fresh tea leaves (deactivation of enzymes), kneading by coarse kneading, middle kneading, fine kneading and the like, drying, and further processing according to the application.
< description of sentence >
In the present specification, unless otherwise specified, the expression "X to Y" (X, Y is an arbitrary number) includes the meaning of "X or more and Y or less" and also includes the meaning of "preferably larger than X" or "preferably smaller than Y".
In addition, the expression "X is equal to or greater than (X is an arbitrary number) or" Y is equal to or less than (Y is an arbitrary number), and the intention of "preferably being greater than X" or "preferably being lower than Y" is also included.
Examples
Hereinafter, the present invention will be described in further detail based on the following examples and comparative examples.
< test 1>
In the germination period of the first tea which is the weakest external environment, foggy water (heating fog) with different temperatures is sprayed on the tea trees, and the condition of no thermal damage is verified.
In a plantation in Jinggang county, hot mist of 40 to 65 ℃ was prepared for the tea variety "Obelia", and a commercially available nozzle (20 nozzles) for tea control was used to spray tea trees and tea leaves for 3 to 10 seconds, and the surface temperature (leaf surface temperature) of the tea leaves was measured and observed to have no thermal damage.
In this case, mist water of 40 to 65 ℃ is obtained by mixing steam generated in a commercially available boiler SB-110 (manufactured by pill & ltd & gt) with a mixer for air (emanation), measuring the temperature of a gas mixture of steam and air released from a nozzle, and adjusting the amount of air taken in the mixer based on the measured temperature to obtain mist water of a target temperature, i.e., heating mist.
The leaf surface temperature of tea leaves was measured by using an infrared radiation thermometer (SK-8700II, manufactured by zuo teng counter) to measure the surface temperature of old leaves located on the surface of the leaf layer.
The judgment of the presence or absence of thermal injury is to judge that "thermal injury is present" when a state in which the leaves are not growing and falling, such as the leaves falling off as they melt or the leaves becoming reddish-black and falling off, is observed, judge that "thermal injury is partially present" when the state described above is observed only partially, and judge that "thermal injury is absent" when the state described above is not observed everywhere.
[ Table 1]
< results >
If the heating mist temperature is 40 to 50 ℃, thermal damage does not occur even if the contact is made for a long time (10 seconds), whereas if the heating mist temperature is 55 ℃, partial thermal damage occurs within 10 seconds. If it exceeds 60 ℃, thermal damage occurs in a shorter time.
From the viewpoint of handling efficiency, the treatment time for prevention and treatment is desirably shorter than 6 seconds, but since thermal damage occurs when the heating mist is brought into contact with 60 ℃ for 3 seconds, it is considered that the temperature is substantially 55 ℃ and 6 seconds as the limit.
< test 2>
The appropriate period for carrying out the control treatment of bringing the heated mist water (heated mist) into contact with the tea leaves was verified.
In a plantation in Jinggang county, for a tea variety, "Obelian", the following control treatments were carried out within 24 hours (5.7 days), in a leaf stage (5.21 days) and in a leaf stage (6.13 days) after pruning for the purpose of leveling the picked surface after the first tea was picked (4.23 days), respectively: the same heating mist of 50 ℃ as that of test 1 was sprayed to tea trees and tea leaves for 6 seconds as that of test 1 to make the leaf surface temperature 50 ℃.
Then, on the date of picking up Ercha (26 days in 6 months), the presence or absence of "anthracnose", a "wheel spot", and a "pest", which are likely to occur in Ercha of Obelia, were observed, and the results were evaluated as "O" when the occurrence was not observed, and "X" when the occurrence was evaluated.
[ Table 2]
< results >
The same control effect as that of the conventional control can be obtained in the test areas 12 to 18, and it can be confirmed that the vapor control is effective at any time.
In contrast, in the test zone 19 as the non-treated zone, 1 core 4 to 5 leaves as the second tea were significantly damaged by the dust, and 9 leaves were damaged. Therefore, although occurrence of anthracnose and wheel spot cannot be directly confirmed, anthracnose and wheel spot are found in the surrounding field at the edge of a ridge where conventional control is insufficient. Considering that the dispersion of conidia due to raindrops caused by anthrax is increased, and the dispersion of conidia due to rainfall or the attachment of conidia to a picking machine is increased, it is known that the control treatment of bringing the heating mist into contact with the tea leaves is effective.
Next, the procedure until the onset of each disease and the most preferable period for steam control were investigated.
Anthrax is a disease infected from trichomes present on young shoots, and develops after a latency period of 14 to 20 days (minimum 8 to 15 days) after attachment to trichomes.
The control method of the anthracnose is clear as follows: it is most effective at the stage of opening the leaf (within two weeks from picking of the tea from the head or pruning) of the shoot in which trichomes are present.
On the other hand, the wheel spot is a disease mainly infected from a damaged surface at the time of picking. Conidia germinate 2-3 hours after attachment and attack after a latency period of 5-10 days. In the conventional control at present, control (spraying of the agent) is required within 1 day after picking, so to speak, period: (period of timeIn the middle of the day) The longer the effect is, the lower the effect is.
Regarding the control of the alternaria leaf spot, it is considered that it is most effective to proceed within 1 day from picking or pruning.
Since the dust particle sucks only the tender shoot, it is most effective to proceed in the opening stage of the shoot (within two weeks from the picking of the tea).
The control treatment of bringing the heated mist into contact with the tea leaves or the tea trees exhibits the effect even after the above-mentioned period (test zones 13, 14, etc.), which can be considered as follows.
If the agricultural chemicals are roughly classified, the "prophylactic agent" and the "therapeutic agent" are sprayed. The above-mentioned 1 day or less from picking, 2 weeks or less from beginning of tea, and the like are all targeted for "prevention", and depend on the viewpoint of preventing the onset of disease and obtaining good quality tea leaves. However, although the disease may be developed even when the prevention and treatment is carried out, the therapeutic agent is used in the conventional prevention and treatment, but the use period of the agricultural chemical is clearly defined, and the prophylactic agent is generally used only 30 days before the picking of the second tea, and the therapeutic agent is generally used only 14 days before the picking of the second tea. Therefore, the disease that has not been able to be sprayed with agricultural chemicals until a certain period of picking has been developed. However, if the control treatment is performed by bringing the heated mist into contact with tea leaves or tea trees, the treatment can be performed at a desired timing because no agricultural chemicals are used.
< test 3>
The relationship between the leaf surface temperature and the control effect when the heated mist water (heating mist) was brought into contact with tea leaves was verified.
In a plantation in Jinggang county, the following control treatments were carried out within 24 hours (1/8) after the picking of the three teas, for the tea variety "Obelia": the same treatment time as in test 1 was applied to tea trees and tea leaves for the treatment time shown in table 3 using the heating mist of the temperature shown in table 3 prepared in the same manner as in test 1, so that the leaf surface temperature was the temperature shown in table 3.
Then, on the four-tea picking day (10 months and 2 days), the occurrence of "anthracnose", "wheel spot" and "insect pest" was observed, and the evaluation was "good" when none occurred and "x" when occurrence was confirmed, respectively.
[ Table 3]
< results >
As is clear from the above examples and the test results of the present invention, when the heating mist is brought into contact with the tea tree and the tea leaves so that the surface temperature of the tea leaves becomes 45 ℃ or more, the diseases and insect pests of the tea can be controlled.
Further, since thermal damage occurs in the test area 32, it is also known that when { the temperature of the heating mist A (. degree. C.) -30 } 2 × { the time h (seconds) } 100 for bringing the heating mist into contact with the tea leaves is 50 or less at a steam temperature of 50 to 55 ℃, a preventive effect can be obtained in a shorter treatment time and thermal damage does not occur.
< test No. 4>
The relationship between the leaf surface temperature and the treatment frequency when the heated misty water (heating mist) was brought into contact with tea leaves and the pest control effect was verified.
In a plantation in Jinggang county, 11 times (from 6 to 10 months, 13 days) of the following treatments were performed for the tea variety "Obelia", every 10 days from the time of Ercha picking: the same treatment time as in test 1 was applied to tea trees and tea leaves for the treatment time shown in table 4 using the heating mist of the temperature shown in table 5 prepared in the same manner as in test 1, so that the leaf surface temperature was the temperature shown in table 4.
On day 8/month and 22/month of the treatment period, 3 pest traps (10 cm. times.13 cm, Bug-Scan, manufactured by Biobest) were installed in each test area, and collected on day 10/month and day 13. Then, the number of pests attached to the trap was calculated, and the results of verifying the pest control effect on tea trees and even tea leaves are shown in table 4.
Regarding the pests, tea lesser leafhoppers, which are representative pests among tea leaves and tea trees, were selected, and the presence of the effect of controlling harmless pests was determined based on the average number of individuals of tea lesser leafhoppers attached to 3 pest traps provided in each test area.
[ Table 4]
< results >
In all the test areas 33 to 36 in which the heating mist was brought into contact with the tea tree and the tea leaves, the average number of tea leafhoppers was reduced as compared with the test area in which the conventional control was performed, and it was confirmed that the insect-proofing effect could be obtained by bringing the heating mist into contact with the tea tree and the tea leaves.
Claims (7)
1. A method for preventing and treating diseases and insect pests of tea is characterized in that the tea leaves and tea trees are sprayed with mist water mixed with steam and air to contact with each other, so that the surface temperature of the tea leaves is 45-55 ℃,
the temperature (DEG C) of mist water in contact with tea leaves and the contact time (seconds) of mist water in contact with tea leaves are adjusted so that { the temperature (DEG C) of mist water in contact with tea leaves-30 ^2 × { the contact time (seconds) } 100 of mist water in contact with tea leaves is 50 or less.
2. A method for controlling a disease or pest in tea according to claim 1, wherein mist water mixed with steam generated by a boiler and air and adjusted to 45 to 55 ℃ is brought into contact with tea leaves.
3. A method for controlling pests in tea according to claim 1 or 2, wherein the treatment of bringing the tea leaves into contact with the mist of heated water is performed within 2 weeks from the time of picking or pruning the tea leaves.
4. A method for controlling pests in tea according to claim 1 or 2, wherein the treatment of bringing the tea leaves into contact with the mist of heated water is performed within 24 hours from the time of picking or pruning the tea leaves.
5. A method of controlling pests in tea according to claim 3, wherein the tea leaf picking is for harvesting first tea or second tea.
6. A method according to claim 3, wherein the whole tea plant is a whole tea plant after picking first tea or a whole tea plant after picking second tea.
7. A method for producing tea, which comprises using the method for controlling pests and diseases of tea according to any one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016256329 | 2016-12-28 | ||
| JP2016-256329 | 2016-12-28 | ||
| PCT/JP2017/046886 WO2018124175A1 (en) | 2016-12-28 | 2017-12-27 | Method for controlling pests of tea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109952022A CN109952022A (en) | 2019-06-28 |
| CN109952022B true CN109952022B (en) | 2022-03-29 |
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| CN201780071682.7A Active CN109952022B (en) | 2016-12-28 | 2017-12-27 | Method for preventing and treating diseases and pests of tea |
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| Country | Link |
|---|---|
| JP (1) | JP6543006B2 (en) |
| CN (1) | CN109952022B (en) |
| AU (1) | AU2017388833B2 (en) |
| WO (1) | WO2018124175A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2019211602B2 (en) * | 2018-01-25 | 2021-09-23 | Ito En, Ltd. | Tea growth promotion method |
| JP7127846B2 (en) * | 2019-04-22 | 2022-08-30 | 政幸 赤堀 | Cultivation method of tea plant |
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| WO2018124175A1 (en) | 2018-07-05 |
| AU2017388833B2 (en) | 2023-01-05 |
| JP6543006B2 (en) | 2019-07-10 |
| CN109952022A (en) | 2019-06-28 |
| AU2017388833A1 (en) | 2019-05-30 |
| JPWO2018124175A1 (en) | 2019-07-25 |
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