JPS60237922A - Promotion of mature of fruit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] a. Industrial Field of Application The present invention is applied to the cultivation of fruit trees such as pears, apples, peaches, and grapes, in which fruits are coated with a fruit casing containing 2-chloroethylphosphonic acid at an appropriate time. This invention relates to a method for accelerating fruit ripening and advancing the harvest time.

b. Prior art The harvest period for fruit trees such as pears, apples, peaches, and grapes varies depending on the variety and region of production, but for the same variety within the same region, the harvest period is concentrated in an extremely narrow period. . Therefore, measures such as extending the work period for harvesting, sorting, packing, and shipping, and increasing marketability by shipping fruits at the time when they are preferred for consumption are important for fruit production. It has been considered a thing.

In line with the above purpose, in the cultivation areas of Nijisseiki pears,
Around the 60th or 100th day after the flower is in full bloom, 2
- Spraying an aqueous solution of chloroethylphosphonic acid over the entire surface of fruit trees to promote fruit ripening has been put to practical use, and the results have been recognized.

However, when spraying 2-chloroethylphosphonic acid solution, the main rule is that it is extremely sensitive to alkalinity, so it decomposes in places when it comes into contact with alkaline substances during the preparation and spraying stages. There have been many cases where the maturation-promoting effect, which is the purpose of the period, is diminished. In addition, since the main aqueous solution is sprayed during the rainy season or during the typhoon season, not only is it not possible to spray it at the appropriate time, but after spraying, the rain can cause the chemical to fade and lose its effectiveness. Cases of disaster caused by weather conditions have also been recognized.

As described above, various drawbacks have been recognized in the method of spraying chemicals, and improvements thereto have been strongly sought after.

C8 Object of the Invention The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a method for promoting fruit ripening that eliminates the drawbacks of the conventional methods.

d0Constitution of the invention That is, the present invention contains 2-chloroethylphosphonic acid in a bag 1.
This method of promoting fruit ripening is characterized by bagging the fruit at an appropriate time with fruit packaging containing 0.5 to 5 μm per fruit.

The present invention will be explained in detail below.

The fruit mount used in the method of the present invention is generally prepared by treating the fruit mount paper with 2-chloroethylphosphonic acid together with a water-soluble resin having a pH of 1 to 4, in order to maintain the sustainability of the medicinal effect and to protect the paper from rain and the like. Alternatively, in order to prevent rapid decomposition, the treated paper is treated with a water-repellent encapsulant such as paraffin wax, and then the bag is made. Target fruits to which the method of the present invention is applied are pears, apples, and peaches.

Examples include grapes, but pears, especially Nijisseiki pears, can be expected to have a remarkable effect.

The mechanism by which the method of the present invention achieves the desired effect is thought to be as follows.

In other words, when the fruit body containing 2-chloroethylphosphonic acid is wrapped in a bag and exposed to the atmosphere, carbon dioxide in the air becomes a slightly acidic liquid with a pl+5 or higher dissolved in night dew or rainwater, or 1115 2-Chlorethylphosboxylic acid, which is treated in paper making, gradually decomposes by spraying a fungicide or insecticide with a grade of 6 or higher, producing ethylene gas, and this gas is released into the fruit inside the bag. It is thought that it acts continuously over a long period of time to promote maturation and achieve the desired purpose.

In addition, examples of the fruit bags treated with 2-chloroethylphosphonic acid used in the present invention include a single bag made of paraffin paper treated with the agent, or a double bag made by layering roll paper or the like inside this paraffin paper bag. Alternatively, good effects can be expected with any structure, such as a double bag in which roll paper treated with a nucleating agent and a coating agent is stacked inside a paraffin paper bag. In particular, a double bag in which roll paper or the like is layered on the inside of the drug-treated paraffin paper bag is desirable. In this case, it is conceivable that the ethylene gas generated from 2-chloroethylbosphonic acid is adsorbed on the roll iJE and gradually volatilizes to act on the fruit, thereby increasing the effect.

In the case of the conventional method of spraying an aqueous solution of 2-chloroethylposponic acid onto the bodies of fruit trees, it is difficult to treat trees with weakened vigor or with physiological disorders such as lack of nutrient water. , Spreading Words 3 - Although undesirable, the method of the present invention can be applied to such abnormal fruit trees.

Furthermore, in the present invention, in addition to treating with a predetermined amount of 2-chloroethylphosphonic acid, one or more types of fungicides and insecticides having p114 or less can be used to promote the ripening process as well as sterilize and kill insects. It is also possible to use a fruit implementation that combines effects.

e. Examples and effects of the invention Next, a detailed description will be given while showing examples.

A solution prepared by mixing and dissolving 2-chloroethylphosphonic acid in a proportion of 0.5 kg, 66.5 kg of movinyl resin, and 133 kg of water, and adjusting the pH to 3-4, was added at a rate of 3.7 kg per square meter of base paper for fruit mounting. ．． og <2 per fruit mount
-Chlorethylbosphonic acid M5■) 22.
2g (amount of the ingredient per fruit body 3 ■), 7 per the same area
．． 3 g (amount of the ingredient per fruit body 1 ■), 3.7 g (amount of the ingredient per fruit body 0.5 ■) per same area After spraying and drying with warm air, paraffin wax was applied per square meter. It was coated at a rate of 11 g, cut into 540 square centimeters, and a double fruit bag was pasted on the inner bag by overlapping white roll paper of the same area.

The full bloom period is April 25th at Nijisseiki Pear Garden, and May 10th.
On June 20th (15th day after full bloom), the young fruits were covered with 4 small bags of antibacterial paraffin paper. The heavy fruit bags were hung in bags as they were in the small bags.The sample bags were marked with 5■, 3■, 1■, and 0.5■, respectively, and 350 bags of each were placed in the test bags. Books were randomly placed in bags.Furthermore, fungicides and insecticides were sprayed based on the Nagano Prefecture 20th Century Pear Disease and Pest Control Standards.

In this way, about 50 of the test-produced enveloped fruits were carried out five times on September 1st, 4th, 8th, 12th, and 15th in each period.
Large fruits were collected and the number of accumulated fruits according to fruit color was used as data to judge the degree of ripening acceleration. Furthermore, on September 7th (
Approximately 100 fruits were harvested from each plot during the peak harvest period, and the number of fruits by fruit color and pulp hardness were investigated to calculate the ripeness color index and determine the degree of ripening acceleration. In addition, the roughness of the fruit surface was grasped by the smoothness index based on the degree of smoothness and roughness of the fruit depending on the treatment concentration of 2-chloroethylphosphonic acid, and this was used as data for determining marketability.

The results are shown in Tables 1 to 3. Specifically, in Table 1, for fruits whose fruit bodies were treated with 2-chloroethylphosphonic acid at different concentrations and harvested every 3 to 4 days, the harvest period was determined by the maroon index.
On the 1st day of the month, the bags in the 5■ treated area showed an index of 72.8, while the untreated bags had an index of 70.8 on the 12th day of September.
The index was 72.4 on September 15th, and the bags in the 5IIIg treatment area showed accelerated ripening of 151 bags from September 12th. In addition, the bags in the 3 ■ treated area showed an index of 69.0 on September 1st, but the untreated bags showed an index of 68.2 on September 8th, indicating that the ripening process was accelerated from the perspective of the maroon color. , is estimated to be around the 8th day of Pa.

In addition, when we look at the degree of smoothness of fruits using the coarseness index as shown in Table 2, it is observed that the fruit points of fruits treated with bags treated with a high concentration of 2-chloroethylphosponic acid tend to be coarser. ,
It is not enough to significantly reduce the marketability.

Furthermore, Table 3 compares the chestnut color and pulp hardness of fruits whose fruit bodies have been treated with 2-chloroethylphosphonic acid at different concentrations. Fruits with treated bags of 5■ and 3■ both showed a bond of 4.2, and the pulp was softened by 1 pound compared to the untreated bag. Based on the bond number indicated by the pulp hardness, it is thought that the ripening period of fruits covered with treated bags is accelerated. In addition, it can be seen that the ripening color of maroon color becomes more pronounced when fruit pods with a high treatment concentration are used.

From the above results, the method according to the present invention is the most preferable in each production area with different environmental conditions, considering the treatment concentration of 2-chloroethylphosphonic acid applied to the fruit body in accordance with the expected harvest period. The most favorable fruits can be harvested in the most favorable quantity at the right time.

7- Yonemi City number 1#, the formula is Rin 3's formula and 1 kashi 8- 5x ♀ dumb real number

Claims (1)

[Claims] 0.5-5 2-chloroethylphosphonic acid per bag
■A method for promoting ripening of fruit, which is characterized by bagging the fruit at an appropriate time with a fruit container containing the fruit.