JPH01157492A - Stable particle-like agricultural medicine manure - Google Patents

Abstract

PURPOSE: To obtain a granular agricultural chemical fertilizer which suppresses the decomposition of agricultural chemicals even after long-term preservation and permits the stable existence of the agricultural chemicals by coating Cartap hydrochloride particles with a water-insoluble low melting waxy substance and depositing these particles on the granular fertilizer.

CONSTITUTION: This granular agricultural chemical fertilizer is prepd. by coating the S,S-(2-dimethylaminotrimethylene)bis(thiocarbamate) hydrochloride (i.e., Cartap hydrochloride) particles which are agricultural chemical active components with the water-insoluble low melting waxy substance which is solid at ordinary temp. and depositing these particles on the granular fertilizer. While the Cartap hydrochloride alone is satisfactory as the agricultural chemical component, others, such as various kinds of the agricultural chemicals having insecticidal, sterilizing and other effects may be added together with the Cartap hydrochloride to the particles. Above all, the powdery components which are solid at ordinary temp. are more preferable. For example, bensultap (S,S2- dimethylaminotrimethylenedi(benzenethiosulfonate); thiocyclam (N,N- dimethyl-1,2,3-trithiane-5-amine,) etc., are widely used.

COPYRIGHT: (C)1989,JPO

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a granular agricultural chemical fertilizer stably containing agricultural chemicals.

[Prior Art] If pesticides and fertilizers can be contained in one agricultural preparation, labor-saving work can be achieved by simultaneously applying the pesticides and fertilizers. For example, in recent years, side row fertilization rice transplanting technology has become popular, and by applying the above formulation to a side row fertilization rice transplanting machine, it is possible to simultaneously apply agricultural chemicals and fertilizers in addition to rice planting. In this case, there is an advantage that the pesticide can also be applied locally to the roots of the plants, and that it is also possible to prevent the pesticide from running away or scattering outside the field.

Such a fertilizer that has both a fertilizer effect and a pest control effect is disclosed in JP-A-57-149891.

[Problems to be Solved by the Invention] However, in general, when pesticides are blended into fertilizers, the pesticide components themselves decompose in many cases, and the pesticides no longer exhibit their effects.

In particular, it is a combination of pesticides that are conveniently applied to side row fertilization rice planting techniques and commonly used granular fertilizers.
There is still no known fertilizer containing pesticides in which both the fertilizer and the pesticide are sufficiently effective for practical use.

Thus, an object of the present invention is to provide a fertilizer stably containing a pesticide that can be widely applied to commonly used fertilizers and pesticides.

Furthermore, by applying agricultural chemicals with a side-row fertilizing rice transplanter, it is possible to achieve effects such as labor saving in chemical spraying and fertilization work and rice planting work, rationalization of farming, and prevention of river pollution. It is.

[Means for Solving the Problems] The present inventors have conducted various studies in order to obtain fertilizers stably containing agricultural chemicals. We have completed the present invention by discovering that when mixed on particles and supported on granular fertilizers, the decomposition of pesticides can be suppressed and the pesticides can remain stably present even after long-term storage, which was unexpected.

That is, the present invention deals with the agricultural chemical component S,5-(2-dimethylaminotrimethylene)bis(thiocarbamate).
The present invention relates to a granular agricultural chemical fertilizer characterized in that particles of hydrochloride (hereinafter referred to as rutap hydrochloride) are coated with a circular water-insoluble low-melting waxy substance at room temperature and supported on the granular fertilizer.

The agricultural chemical component in the present invention may be cartap hydrochloride alone, or together with cartap hydrochloride, other insecticides,
Various pesticides having sterilizing and other effects may be added. Particularly desirable is a powder that is solid at room temperature. For example, bensultap (S, S2-dimethylaminotrimethylene di(benzene thiosulfonate), thiocyclam (N, N
-dimethyl-1,2,3-1-lithian-5-amine)
, PHC (0-isopropoxyphenyl methylcarbamate), MIPC (0-cumenyl methylcarbamate)
and furadan (2,3-dihydro-2,2-dimethyl-
7-Benzofuranyl methyl carbamate, hereinafter referred to as lupofuran. ) and other carbofuran-based insecticides are widely used.

In the present invention, these agrochemically active ingredients used together with cartap hydrochloride may be used alone or in combination of two or more. When cartap hydrochloride is used with other pesticide components, it may be melt-coated with a waxy substance after mixing all the pesticide components, or each pesticide component may be coated with a waxy substance and then mixed and supported on the fertilizer. You can force it.

In the present invention, cartap hydrochloride and/or agricultural chemical components whose decomposition should be suppressed are melt-coated with a circular water-insoluble waxy substance at room temperature. As such a low melting point waxy substance, one having a melting point of 35°C or higher, preferably 37 to 90°C is suitable.

Such a circular water-insoluble waxy substance at room temperature is
For example, higher fatty acids (e.g. lauric acid).

myristic acid, palmitic acid, stearic acid, etc. and mixtures thereof), higher alcohols (e.g. myristyl alcohol, stearyl alcohol, cetyl alcohol, etc. and mixtures thereof), vegetable waxes such as carnauba wax and cotton wax, beeswax, wool wax, etc. Petroleum waxes such as animal wax and paraffin wax are used. Any of these can be used alone or in combination of two or more.

Granular fertilizers are not particularly limited and a wide range of fertilizers can be used. In particular, granular chemical fertilizers containing one or more of nitrogen, phosphoric acid, potassium, etc., especially all of them, are widely applied and convenient. The effects of the present invention are particularly remarkable in slow-release chemical fertilizers that have been given slow dispersion properties. Among these granular chemical fertilizers, those that contain phosphoric acid in the form of calcium phosphate, or that are given slow-release properties by other known means such as adding pitch or sulfur, are commonly used.
These fertilizers are particularly effective. Examples of the fertilizer of the present invention include commercially available slow-release fertilizers (for example, IB Kasei manufactured by Mitsubishi Kasei Corporation), general chemical fertilizers [for example, Kumiai Kasei (Nissan Chemical), Chiyoda Kasei (Nissan Chemical).

Nihonmoto Kasei (Co-op Chemical Co., Ltd.) and general organic chemical fertilizers [for example, Organic Chemicals (Kyowa Hakko) 1, etc. can also be used.

In addition to this, the agricultural chemical fertilizer of the present invention may be used with other fungicides (
For example, organochlorine disinfectants, organophosphorus disinfectants, benzimidazole disinfectants, and copper disinfectants.

Organic sulfur fungicides, phenolic fungicides, antibiotics, etc.), insecticides (natural insecticides, carbamate insecticides, organophosphorus insecticides, etc.), other acaricides, nematicides, herbicides, plants A growth regulator or the like may be added as appropriate, for example, when the agricultural chemical component melt-coated with the above-mentioned low melting point waxy substance is supported on the fertilizer or when it is applied.

Furthermore, as stabilizers for agricultural chemical components, phosphoric acid, oxalic acid, citric acid, tartaric acid, PAP (inglovir acid phosphate), etc. may be added alone or in a mixture of two or more.
In addition, as anti-caking agents, silicas such as diatomaceous earth and powdered silicic acid, clays such as bentonite and acid clay, and powdered surfactants may also be appropriately incorporated.

In the agricultural fertilizer of the present invention, cartap hydrochloride accounts for 5 to 0.01%, preferably 3 to 0.05% of the total agricultural fertilizer.
, more preferably about 0.7 to 0.1%. The waxy substance for melt-coating the pesticide components is 10 to 0.05%, preferably 5 to 0.1% of the total amount of pesticide fertilizer.
, more preferably 2 to 0.5%. Further, the above stabilizer content is usually 1 to 0.005%, preferably 0.5 to 0.005%.
005%, furthermore 0.1 to 0.005%. It is optimal to use 1% O.

The other additives mentioned above may be added as appropriate depending on the purpose, for example, in an amount of about 0.5 to 3%, within a range that does not impair the effects of the present invention.

The agricultural chemical fertilizer of the present invention is prepared by heating a circular water-insoluble, low-melting waxy substance at room temperature to a temperature above the melting point to melt the waxy substance, and then coating the agricultural chemical active ingredient with the waxy substance.
It can be produced by supporting it on granular fertilizer.

More specifically, the agricultural chemical fertilizer of the present invention generally includes:
For example, using a mixer such as a Nauta mixer, first mix Cartap hydrochloride and/or the agricultural chemical component to be coated with a circular water-insoluble low-melting waxy substance at room temperature and optionally stabilizers and solids. By adding anti-caking agents and surfactants and heating to a temperature above the melting point of the waxy substance,
Manufactured by melting a waxy substance and dispersing agricultural chemical components in the waxy substance, or by coating the waxy substance and supporting it on granular fertilizers by means known per se, such as mixing or spraying. be done.

The application of the granular agricultural chemical fertilizer of the present invention described above varies depending on various conditions such as the growth stage of the target plant, the growth situation, the type of disease, the time of application, or the application method, but generally, per 1O are, The weight may be adjusted to about 15 to 50 kg.

As long as it is used safely and effectively on crops, no limitations are imposed on the present invention, regardless of the amount, concentration, or method of use.

A particularly preferred method of using the agrochemical fertilizer of the present invention is to use a side-row fertilizer rice transplanter (for granular fertilizer) to apply it in strips into the soil on the sides of seedlings (approximately 3 cm x 3 cm) at the time of transplanting. can give.

For example, using cartap hydrochloride as a pesticide ingredient,
By applying in the above method, it is possible to simultaneously control pests such as rice weevil and rice grub weevil and apply fertilizer. Furthermore, in the present invention, by using a slow-release fertilizer, the release of the effects of both pesticides and fertilizers can be suppressed to provide a so-called sustained-release effect.

In addition, in the agricultural chemical fertilizer formulation of the present invention, neither the fertilizer components nor the agricultural chemical components have any adverse effects.

[Effects of the Invention] The granular pesticide-containing fertilizer of the present invention, which is made by coating cartap hydrochloride with a circular water-insoluble low-melting waxy substance at room temperature, has the following properties:
As shown in the stability test results below, compared to fertilizers containing granular pesticides that do not belong to the present invention, the fertilizer exhibits a remarkable effect in that the pesticide remains stably even after days have passed.

Thus, according to the present invention, it is possible to apply pesticides and fertilizers simultaneously, and since the effects of both pesticides and fertilizers are sustained release, the period of application can be extended, resulting in labor-saving and rationalization of farming. Furthermore, when applied to rice fields, etc., the present invention has the effect of suppressing agricultural chemicals from being washed away from the rice fields into rivers, etc., and preventing harm to fish, shellfish, etc.

[Example] The method and effects of the present invention will be explained in detail with reference to Examples below. All parts and percentages in the examples are by weight.

Example 1 1.4 parts of lauric acid and 0.5 parts of phosphoric acid were added to 0.5 parts of Cartap hydrochloride drug substance (Badan drug substance, hereinafter abbreviated as CT drug substance).
By adding 05 parts of C and heating to 70°C and stirring,
IB chemical fertilizer (IB made by Mitsubishi Kasei) is made by dispersing the T substance well.
Chemical fertilizers below 042 are described as IB chemical fertilizers. )98.0
5 parts by a spray method.

Example 2 0.4 parts of CT bulk, 1.2 parts of myristic acid, 0 citric acid
．． 2 parts of IB chemical fertilizer was added and heated to 75°C, and this was carried on 98.38 parts of IB chemical fertilizer in the same manner as in Example 1.

Example 3 0.4 parts of CTi body, 1.5 parts of palmitic acid, and 0.4 parts of phosphoric acid.
0.05 parts was added and heated to 70°C, and this was carried on 98.05 parts of IB chemical fertilizer in the same manner as in Example 1.

Example 4 0.4 parts of CT bulk, 1.45 parts of stearic acid, 0 parts of tartaric acid
．． 05 parts was added and heated to 75°C, and this was carried on 98.1 parts of IB chemical fertilizer in the same manner as in Example 1.

Example 5 1.1 parts of cotton wax was added to 0.5 parts of CT raw material and heated to 80°C, and the mixture was prepared in the same manner as in Example 1 to make IB chemical fertilizer 98.4.
The department will be responsible for this.

Example 6 0.2 parts of CT bulk, 1.0 part of stearic acid, and 0.0 parts of phosphoric acid.
02 parts was added and heated to 85°C, and this was carried on 98.78 parts of IB chemical fertilizer in the same manner as in Example 1.

A control formulation that does not belong to the invention is shown below.

Control formulation 1: 0.5 parts of CT base material is mixed with 0.05 parts of phosphoric acid, and this is further mixed well with 99.45 parts of IB chemical fertilizer, so that the CTM body is supported on the IB chemical fertilizer.

Stability Test of Active Ingredients The improved granular pesticide fertilizers according to the invention and the control formulations shown in Examples 1 to 6 were tested in a 40°C incubator for 30 days and 6 days.
After storage for 0 days, the active ingredient content was measured by a colorimetric method, and the residual ratio relative to the initial content was determined and shown in Table 1. At the same time, oral changes in appearance were measured and are shown in Table 2.

Table 1: Remaining rate of active ingredient Table 2: Change in appearance From the above results, it is clear that the formulation of the present invention is extremely superior in stability to the formulations of the prior art.

Agent Patent Attorney Iwa 1) Hiroshi

Claims (1)

[Claims] Particles of S,S-(2-dimethylaminotrimethylene)bis(thiocarbamate) hydrochloride (i.e., cartap hydrochloride), which is a pesticide active ingredient, are coated with a circular, water-insoluble, low-melting waxy substance at room temperature to form granules. A granular agricultural chemical fertilizer characterized by being supported on the fertilizer.