DD225899A1 - MEDIUM FOR SIKKATION - Google Patents

Abstract

The invention relates to means for siccation, which are particularly suitable for the siccation of potato herb, Koernerleguminosen and rapeseed. The object is to provide new agents with advantageous active properties for use in modern agrotechnical production processes. According to the invention, agents containing N-n-butyl-N- / 1- (0,0-di-n-butyl-phosphonyl) -cyclohexyl / ammonium chloride in combination with monochloroacetic acid are used for this purpose.

Description

Title of the Invention Composition for siccation

Field of application of the invention

The present invention relates to siccation agents which can be used to kill or control undesirable plant growth in agriculture.

Characteristic of the known technical solutions

In the context of modern agro-technical production methods, the pre-seed drying of crop stands is of great importance. The sikication by chemical means, for example, facilitates the use of modern harvesting technology in potato cultivation and ensures a uniform maturation of the tubers. When cultivating rapeseed and canary legumes, the energy required for post-drying under humid climatic conditions can be considerably reduced.

Known sikkation means, such as substituted Aminocyclohexanphosphonsäureester with the active ingredient Buminafos (1-N-butylaminocyclohexane-phosphonic acid dibutyl ester) (DD. 93280 and 114 328), but in some cultures, despite relatively high application rates not always fully satisfactory kill rate and too low Initiaiwirkung on

 The salts of the substituted 1-aminocyclohexane-phosphonic acid esters (DD 108 995 and 123 260), as well as various

dene proposed combinations of these salts, such. with quaternary Dipyridylium Saizen (DD 115 022) or substituted Cyanimidodithiocarbonaten (DD 123 423), the disadvantages mentioned so far only inadequate 'overcome.

Monohalogenated acetic acids have hitherto been described both as total herbicides and as selective herbicides (US Pat. No. 2,622,976). An application as Sikkationsmittel is not yet known.

Object of the invention

The aim of the invention is to develop new siccating agents with improved performance properties.

Explanation of the essence of the invention

The invention has for its object to find new means of siccation with good siccative effectiveness and favorable toxicological properties. To solve this problem 'means are proposed for siccation, which are characterized in that they in addition to the usual excipients and carriers as the active ingredient, a combination of Nn-butyl-N- / 1- (O, 0-di-n-butylphosphonyl) cyclohexyl / ammonium chloride and monochloroacetic acid.

Surprisingly, it has been found that when using the active ingredient combination of Nn-butyl-N- / 1- (0,0-di-n-butyl-1-phosphonyl) -cyclohexyl / ammonium chloride and monochloroacetic acid according to the invention in comparison with the individual components. stronger effect than the expected additive effect (synergism) occurs, wherein the mixing ratio of the individual components can be from 1: 1 to 1: 5 parts by mass.

The compositions according to the invention have a strong siccative activity and a broad action for killing plants or parts of plants and do not pollute the soil residue-toxicologically, which makes them particularly suitable for siccation.

of potato herb, grain legumes, rapeseed and seed stock. Furthermore, it is possible to combat undesirable plant growth.

The preparation of the active ingredient Nn-butyl-N- / 1- (O, O-di-n-butyl-phosphonyl) -cyclohexyl / ammonium chloride used in the agents according to the invention can be carried out in a simple manner according to known synthesis principles from Nn-butyl-N- / 1- (o, o-di-n-butyl-phosphonyl) cyclohexyl / amine (active ingredient Buminafos) take place, as described for example in DD 108 955. Instead of Nn-butyl-N- / 1- (O, O-di-n-butyl-phosphonyl) -cyclohexyl / -ammonium chloride, other N-alkyl-N- / 1- (O, O-di-alkyl) Phosphonyl) -cyclohexyl / -ammonxum salts, which may also be substituted in the cyclohexyl be used in the agents.

The monochloroacetic acid used as a synergistically acting combination partner in the compositions according to the invention can be prepared by known synthesis processes.

Of the active compound combinations according to the invention can be prepared in a known manner formulations. For this they are dissolved or dispersed with customary auxiliaries and carriers or mixed with solid carrier materials or formulated by other known methods. The compositions generally contain between 5 and 90 % by weight of active ingredients. They can be used as such or in forms prepared by further dilution and in tank mixes. The application is carried out in a known manner, for example by spraying, pouring or spraying. The following examples serve to illustrate the siccative activity and the fields of application of the agents according to the invention.

Embodiments Test Methods

A) Greenhouse testing

For the whole plant experiments potato and field bean plants were grown on soil under additional lighting in the greenhouse. After the emergence of the plants, 30 ml (field bean) or 50 ml (potato) of 0.2% per pot wasserei fertilized. Per variant 4 pots were used with plants of the same stage of development.

The application of the agent is carried out by dripping wet spraying of the plants in the specified concentration of active ingredient. The floor was covered to prevent the penetration of the funds.

B) Free field testing

For the siccation of the potato herb in the field, plots with Solanum tuberosum, variety "Karpina", were used.

2 led. Pro tested variant became 4 times 10 m denser

Plant stock treated. The middle application took place

by means of a backpack syringe, the amount of broth was

ρ 60 ml / m. The rating was made after 4 and 14 days, in the table the final rating is shown.

The determination of the residual effect of the agents according to the invention was carried out with summer wheat under greenhouse conditions. Per variant, 4 times 50 grains were seeded in plant shells at monthly intervals in a mixture of 30% gravel and 70 % compost soil. Before the first sowing, the soil was sprayed with the amount of used agent indicated in the examples. 36 days after sowing, the scoring was carried out with regard to damaged parts of plants (scores from 0 to 10), whereby 10 means 100% mortality rate.

The calculation of the synergistic effect takes place after COLBY:

X. Y

E = X + Y.

100

Beis £ iel_1_

Desiccative effect of a mixture of N-n-butyl-N- / 1- (0,0-din-butyl-phosphonyl) -cyclohexyl / ammonium chloride (I) and monochloroacetic acid (II) on Solanum tuberosum in the whole plant test (greenhouse) Evaluation 10 days after medium application

siccative effect in % synergistic I II I + II effect n. COLBY

Conc. (%) 0.5 1.0 100 65 54.3 Leaf stems 84 6 80 5 Conc. (%) 0.8 1.0 100 74 58.6 Leaf stems 88 11 80 5 Conc. (5S) 0.5 1.5 100 88 68.8 Leaf stems 84 6 98 14 Conc. (%) 0.8 1.5 100 92 68.5 Leaf stems 88 11 99 14

Desiccative effect of a mixture of Nn-butyl-N- / 1- (O, O-din-butyl-phosphonyl) -cyclohexyl / ammonium chloride (I) and monochloroacetic acid (II) on Solanum tuberosum., Variety "Karpina" (field cultivar) Plot trial) Evaluation 14 days after drug administration

) siccative I I Effect I I in + % II synergisti effect n. shear COLBY Conc. (% 0.4 1 , 5 Leaf stems 32 10 58 1 31 00 85 25.5 47.0

Bei_ £ p_ie_l_3

Residual effect of a mixture of Nn-3-butyl-N- / 1- (O, O-di-n-butyl-phosphonyl) -cyclohexyl / ammonium chloride (I) and monochloroacetic acid (II) in the soil, assessed according to the degree of damage to the leaves of spring wheat 36 days after sowing (credit score from 0-10) *

Drug damage to the leaves mixed (kg / ha) 36 days after sowing

Sowing in weeks after center multiplication 1 5 9 '13

I + II 0 0 0 0.4

(4.8 +9.0)

Claims (2)

invention claim 1. siccation agent, characterized in that it contains, in addition to customary auxiliaries and excipients as the active ingredient, a combination of N-n-butyl-N- / 1- (0,0-di-n-butylphosphonyl) cyclohexyl ammonia and monochloroacetic acid in a mixing ratio of 1: 1 to 1: 5 parts by mass. 2. Composition according to item 1, characterized in that they are used for the siccation of crop plants, preferably potato herb, grain legumes, rapeseed and seed carrier stocks, as well as for controlling unwanted plant growth.