JPS59144701A - Improved fine dust for horticulture under structure - Google Patents

Abstract

PURPOSE:A fine dust for horticulture under structure that is obtained by adding a mineral acid such as phosphoric, sulfuric, carbonic and/or hydrochloric acid to a specific dust for horticulture under structure composed of active chemicals and a powder of mineral carrier, thus being prevented from flying up from the crops after application. CONSTITUTION:A fine dust for horticulture under structure, which is composed of active ingredients and a powdery mineral carrier and has less than 5 micron particle size on the average and less than 0.5 apparent specific gravity, is combined with at least one selected from the group consisting of phosphoric acid, sulfuric acid, carbonic acid and hydrochloric acid above 0.1wt%, preferably 0.1- 5wt%, to be almost completely prevented from flying off again from the crops without any adverse effect of the high suspension characteristic in the original fine dust, thereby the workers can safely operate in the greenhouse in the morning following the application. The additive is highly safe and easily washable with water, thus permitting the use of the dust without anxiety.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a technology for improving fine powder for greenhouse horticulture. That is, in a fine powder for greenhouse horticulture (hereinafter referred to as flow dust) consisting of an agricultural chemical active ingredient and a mineral powder carrier, with an average particle size of 5 microns or less and an apparent specific gravity of 0-15 or less, phosphoric acid, The present invention relates to providing an improved flow dust characterized by blending at least one selected from inorganic salts of sulfuric acid, carbonic acid, and hydrochloric acid. The purpose of this is to mix the above-mentioned additives into conventional flow dust, so that the finely powdered flow dust that adheres to the crops after being sprayed can be re-released from the plants into the air by contact with the human body. Our objective is to provide flow dust that has been improved to prevent it from flying up.

In recent years, with the development of greenhouse horticulture, fine powders have been used in greenhouses (greenhouses: hereinafter referred to as F) made of vinyl or glass.
300 to 5 per 10 ares from the outside (called the house in width)
Flow dust that sprays 00g has been developed (Japanese Patent Application Laid-open No. 1983
-24490 publication. ) Flow Dust is a fine powder with an average particle size of 5 microns or less and an apparent specific gravity of 0.15 or more. Flow Dust is designed so that when it is sprayed with a sprayer into a facility such as a greenhouse, the chemical drifts in the air for a certain period of time, falls into the greenhouse, and evenly adheres to the crops. Therefore, safety instructions have been given to sprayers to spray chemicals from outside the greenhouse in the evening, and to enter the greenhouse and begin work the next morning after the chemicals have fallen off. However, when the sprayer enters the greenhouse to work the next day, there is no chemical floating in the air, but if a person comes into contact with the crops, the attached chemical will rise again, and the sprayer will come into contact with it. , health and safety” - the reality is that this is a problem. Currently, no countermeasures have been taken to prevent these flow dusts from rising again.

The present inventors conducted various investigations in order to develop a formulation that suppresses flow dust from rising again. As a result, they discovered that by blending the above-mentioned additives into conventional Flow Dust, it was possible to almost completely suppress the re-uplift of chemicals from the crop without impairing the properties of Flow Dust, and the present invention was completed. I ended up doing it. In other words, it was possible to suppress the re-wafting up of the chemical from the crop without compromising the high floatability, which is the most important feature of FLOGIS), and as a result, several 4j people were able to work safely. This is a major feature of the present invention. Furthermore, since the additives used in the present invention are highly water-soluble, they have the advantage that even if chemicals are attached to harvested crops, they can be washed extremely easily with water.

Examples of the additives that can be used in the present invention include primary additives. However, those that can be used in the present invention are:
The present invention is not limited to the following examples.

Fire Z Sandan (1. Potassium phosphate, dipotassium phosphate, tripotassium phosphate, sodium phosphate, disodium phosphate, sterium phosphate, ammonium phosphate, diammonium phosphate, Calcium monophosphate, potassium pyrophosphate, sulfur/lium birophosphate, sodium metaphosphate, and their hydrates, etc. Potassium thiosulfate, thorium thiosulfate, potassium resistant, aluminum sulfate J1, and their hydrates (1 potassium carbonate, 11 sodium carbonate, 1 hydrogen carbonate)
All additives of the present invention such as potassium chloride, calcium chloride, ferric chloride, ammonium chloride, magnesium chloride, mankan chloride, and their hydrates, etc. It is a very safe substance that is designated as a food additive or similar, so it can be used with confidence.

The amount of the additive of the present invention is 0.1% by weight based on the formulation.
If the content is 1-1, it will be effective, but from the viewpoint of effectiveness and economy, it is preferably 0.1 to 5%.

The agricultural chemical active ingredients used in the present invention are not limited in any way, and all chemicals used for greenhouse horticulture, such as herbicides, fungicides, plant growth regulators, and mixtures thereof, can be used. Examples include the following:

The names of active ingredients of pesticides are [Pesticide Handbook 1981
Based on the common name of the year edition] (published by the Japan Plant Protection Association).

Insecticides salithion, MEP, DEP, PMP, cyanophon,
Isoxathion, virimiphos-methyl, pyridafenthione, PAP, Guidistone, DiS]・Ni1・, diazinon, bamitothion, formothion, thiometone, ethylthiometone, prothiophos, nisdox, acephate, DMTP, CVP, marathon, EPN, EPB
P, virimicarp, pyrethrin, rotinone, chlorbenzilate, DDVP, NAC, BPMC, menmyl, cartamp, kelsen, chinomethionate tricyclohexyltin hydroxide, benzomate, phenysobromole
Fungicides, etc. Inorganic copper agents (basic copper sulfate, basic copper chloride, cuprous hydroxide), organic copper (oxine copper), TPN, cabtan, thiophanate methyl, Nomil, zineb, maneb, mancozeb, ampam , polycarbamate, dithianone, cyclofluanid, triazine, difortan, kasugamycin, baritamycin A, polyoxin, TBP,
Producing the flow dust related to the present invention, such as plonmidone, vinchlorin, and iprodione, does not require any special method or equipment, and can be produced using various carriers and auxiliary agents commonly used in the production of agricultural chemicals. can. These carriers and adjuvants do not have any adverse effect on the expression of the effect of inhibiting re-floating, and there is no problem in using them.

Examples are given below to specifically explain the present invention, but the present invention is not limited to these examples.

In addition, all parts in the examples are parts by weight.

F1'1 basic copper chloride 68 parts, Houi I carbon 2
0 parts, fine powder clay 10 parts, calcium chloride 2 for water 2
1 part and pulverized using a jet-0-miser pulverizer at an air pressure of 5 kg/cm' to mix uniformly.

Husband 1 [-? 15 parts of Kelsen, 20 parts of white carbon, 61.5 parts of fine clay, 3.5 parts of magnesilla chloride 1.6 hydrate
1 part and pulverized using a jet-0-Miser pulverizer at an air pressure of 5 kg/cnf to mix uniformly.

Fumi-Example-A 20 parts of thiophyl methyl, 20 parts of white carbon
59 parts of fine clay, 1 part of sodium phosphate, 3 parts of kasugamycin hydrochloride, 60 parts of basic copper chloride, 34.5 parts of white carbon, and potassium phosphate 2.
5 parts of the mixture was added and pulverized using a Gento-Mizer pulverizer at an air pressure of 5 kg/crn' to mix uniformly.

Kyogan side - J Ginomethione) 10 parts, White Carbon 20
1 part of monocalcium phosphate monohydrate was added to 69 parts of finely powdered clay, and the mixture was pulverized using a Jet-Mizer pulverizer at an air pressure of 5 kg/crn' to mix uniformly.

Add 0.5 parts of sodium bicarbonate to 25 parts of Miji JIJLW Procymidone, 30 parts of white carbon, 44.5 parts of finely powdered clay, and use a Chef) 0-Mizer pulverizer to crush the mixture at an air pressure of 5 kg/cr11' to ensure uniformity. Mix with

Dissection - Add 2 parts of potassium carbonate to 30 parts of TPN, 30 parts of white carbon, 38 parts of fine clay, and jet
〇- Using a Miser crusher, grind at an air pressure of 5 kg/cnf 0- Using a Miser grinder, grind at an air pressure of 5 kg/cnf
/ crn' to pulverize and mix uniformly.

Add 5 parts of magnesium sulfate trihydrate to 15 parts of salicion, 30 parts of white carbon, and 50 parts of finely powdered clay.
Grind at g/cm' and mix uniformly.

All of the average particle diameters of Examples 1 and 2 were 1 to 3 microns, and the apparent specific gravity was all 0.1 or less. Furthermore, the flow dust used in the following test examples was almost the same as these and met the requirements for flow dust.

Test examples are given below to prove the usefulness of the present invention.

Comparisons 1 to 9 were prepared by removing the additives from Examples 1 to 9 and replacing them with the same amount of white carbon.

Test Example 1 Using a standard vomit tester for powder powder, 5 g of the drug produced according to the above example was sprayed downward into a "lrn" box and left for 5 minutes. Scattered and floating particles were collected in an absorption tube containing 75 mJ of water at a rate of 30 mJ/min.
The transmittance at a wavelength of 610 mg (z
) was measured, and the buoyancy index was determined using the following formula.

Floatability index-100-transmittance (%) The results are shown in Table 1. Note that the larger the buoyancy index, the higher the buoyancy.

2. Four pots of tomatoes (variety No. 1 in the world; 5-leaf stage) were planted in a 1 m' wooden frame, and the chemical produced according to the above example was applied with a midget duster at a rate of 500 g per 10 ares. Spread in proportion. After spraying, cut two tomatoes from the base of the plant, place each in a polyethylene bag, add one portion of ion-exchanged water, and shake well. Next, after appropriately diluting this extract with ion-exchanged water, the transmittance at a wavelength of 61 OmJi (
Measure X). The amount of the extracted drug is calculated from a calibration curve determined in advance using the same drug, and the average value (X) of the amount of the drug adhered to the two spots is determined. Also, leave the remaining two pots in the greenhouse, and after leaving them overnight, cut the tomatoes from the base of the plant.
Swing downward (50 cm in 1 second) 10 times, horizontally (50 cm)
After shaking part M 10 times (for 1 second), place it in a polyethylene bag, perform the same operation as above, calculate the amount of extracted drug, and calculate the average value (Y) of the amount of drug adhered to the two pots. was calculated, and the residual rate (z) was calculated using the following formula.

Residual rate (%) = -X 100 As a result, the higher the residual rate (%), the less the relapse of Flowdus 0 after spraying.

At the same time, the state of powdering of the fine powder agent when the tomatoes were shaken horizontally by the method described in L was observed with the naked eye, and the degree of powdering was ranked according to the following.

The results are shown in Table 1.

In order to find out the relationship between the amount of kutetsukoe added and the effect, a drug was prepared according to the above example, and buoyancy and resurfacing tests were conducted. The results are shown in Table 2.

66 - Procedures Amendment Book Showa 10th March 10th Patent Office Commissioner Kazuo Wakasugi 1. Indication of the case Patent Application No. 1982 2. Title of the invention 3. Relationship with the person making the amendment Patent Applicant 4-2-76, Hongoki-cho, Contents of amendment 1) "Publication.)" in the 6th line of page 2 is amended to read "Publication)."

2) In the second line of page 9, "apparent specific gravity is also all" is corrected to "apparent specific gravity is 0.14 in Example 1, and in other examples".

Claims (1)

[Claims] A fine powder for greenhouse horticulture consisting of an agricultural chemical active ingredient and a mineral powder carrier, with an average particle size of 5 microns or less and an apparent specific gravity of 0.15 or less, containing inorganic salts of phosphoric acid, sulfuric acid, carbonic acid, and hydrochloric acid. An improved fine powder for greenhouse horticulture, characterized in that it contains at least one selected from the following.