HU176759B - Komposition for stabilizing corn stalk - Google Patents

Abstract

The grain stabilizing substance of the invention allows for an acceleration of its growth and consists in adding a small amount of urea and / or polyhydric aliphatic polyhydric alcohols with 3 to 6 carbon atoms to the cloretanphosphonic acid, which makes possible a decrease of the amounts needed to be consumed so far by cloretanphosphonic acid. enhancing the inhibition effect of growth due to the addition of urea is all the more surprising, as the addition of urea to growing plants generally has the effect of a fertilizer and thus an acceleration of growth.

Description

FIELD OF THE INVENTION The present invention relates to a novel agent for stabilizing corn stalks. It is known that, due to their morphological properties, β-chloroethanophosphonic acid is used to stabilize crop plants, especially cereals, which are prone to tilting at an appropriate vegetation stage.

For example, the use of β-chloroethane phosphonic acid to stabilize rye stems has recently become widespread. The use of β-chloroethanesulfonic acid not only eliminates the disadvantages of tilting, such as making it difficult to harvest machinery, reducing yields or germination, but it also results in a significant increase in yields for non-tilting cereals. Since the production of β-chloroethane phosphonic acid is relatively expensive, it seems desirable to keep the amounts used as low as possible without jeopardizing the stabilizing effect.

No. 1,667,968. A combination of β-chloroethane-phosphonic acid and urea is known from the German patent application, e.g. It contains 2 kg of β-chlorophetane phosphonic acid and 35 kg of urea, and 4 kg of β-chloroethane phosphonic acid and 35 kg of urea. However, the high urea ratio and application time (1.5-2 leaf stage) clearly show a clear fertilizer effect. These formulations are extremely unstable and hence the concentration of the active ingredient varies.

Thus, it is an object and object of the present invention to either find a novel cereal stabilizer or to increase the action of the known agent by certain measures.

Surprisingly, it has been found that adding a small amount (0.2 to 2% by weight) of urea and / or 5 to 20% by weight of C3 -C8 polyhydric aliphatic alcohol to 20 to 40% by weight of β-chloroethane phosphonic acid The amount of β-chloroethane phosphonic acid is significantly reduced. The enhancement of the growth-retardant effect of urea addition is all the more surprising since growth plants generally achieve fertilization with urea addition and thus accelerate growth. The effect of alcohols in this direction was neither known nor expected. It has also been found that the combination of urea and / or polyhydric alcohols with β-chloroethane phosphonic acid in the above ratios leads to synergism, i.e. far outweighs the individual biological effects of phosphonic acid, urea and alcohols.

A further advantage of the combination according to the invention is that it reduces the load on soil and crop plants with foreign matter. It has further been found that urea is preferably used in an amount of 0.1 to 10%, preferably 1 to 3%, by weight of β-chloroethane phosphonic acid. The polyhydric alcohol used is 10-40% by weight of β-chloroethane phosphonic acid. The individual components of the agent are mixed and diluted with water to form a permeate at a time, or only occasionally added to each component when used. Both forms of application are successful.

The following greenhouse and field experiments confirm the effect of the present invention. Various varieties of cereals were used as test plants. The criterion for the effect of the mixtures used was the length reduction of the test plant series, as well as the judgment of the yield and inclination. The evaluation was carried out in the greenhouse and in the open field by ranking the treated plants two weeks before harvest and after the end of the experiment on the basis of the herbicidal scale and the measured lengths. Ranking means l = no effect, 9 = = very good herbicidal effect. The most favorable stem stabilizing effect was achieved at values of 3 to 4, since the higher values extend to the phytotoxic area and the yield may be reduced. The formulation used contains 50% of the active ingredient: 3-chloroethane phosphonic acid (CEP). The amount of spray applied is 300 l / ha.

Experiment 1

Greenhouse experiment with CEP and urea

^ New substance used for treatment Degree of reduction in spike length winter rye winter barley Hops untreated 1 1 1 CEP 2.5 kg AS / ha 1 1 Urea 25 g / ha 1 1 Urea 37.5 g / ha 1 1 CEP 2.5 kg AS / ha + urea 25 g / ha 3 2 CEP 5 kg AS / ha 4-urea 37.5 g / ha 2 ! i CEP 5 kg AS / ha 1 2 Urea 50 g / ha 1 1 Urea 100 g / ha 1 1 CEP 5 kg AS / ha + urea 50 g / ha 3 5 CEP 5 kg AS / ha 4-urea 100 g / ha 3 5

Experiment 2 Series

Field experiment with CEP and urea additive in winter rye (Danae variety) treatment period F 9 (Feekes-Skala 9)

Material used for treatment Stem shortening % Yield g / l, 2m * stem Stability 1 ~ 100% tilt untreated 0 321 1 CEP 1.5 kg AS / ha 5 389 8 CEP 2, - kg AS / ha 4 urea 15 g / ha 14 407 9 CEP 1.5 kg AS / ha + urea 15 g / ha 19 456 9 CEP 1.5 kg AS / ha 4-urea 30 g / ha 20 424 9 CEP 2, - kg AS / ha 4-urea 20 g / ha 21 428 9 CEP 2, - kg AS / ha + urea 40 g / ha 20 445 9

Experiment 3 Series

The influence of alcoholic groups was investigated. Hydrocarbons containing one or more hydroxyl groups are used.

The results are shown in the following summary, which shows that the best results with respect to the stabilizing effect are obtained with hydrocarbons having a minimum of 6 carbon atoms and 2 hydroxyl groups. The formulations used contain 50% β-chloroethane phosphonic acid and 50% solvent.

The experiments were carried out in different locations on winter rust:

I. Bobbau clay sand, medium water supply 41 / ha

II. Miimersdorf light sand, poor water supply amount used 41 / ha

III. Paulinenaue peat soil, high groundwater levels used 3 1 / ha

Solvent Song Relative stem shortening Relative grain yield C OH I II III Γ II III untreated 0 0 0 100 100 100 Water - 1 18 18 10 100 95 97 ethanol 2 1 15 16 9 104 104 _ ethanediol 2 2 18 17 10 103 98 100 hexanol 6 1 16 15 - 105 95 _ Hexanthriol / water 2: 1 6 3 - - 13 __ _ 100 Octanediol / water 2: 1 8 2 16 15 9 125 128 117 1: 2 i 8 2 23 24 15 127 128 116

Hexanetriol and octane diol were not used alone. As long as the hops show a white nougat because the preparations are very viscous. So the tea is treated on the treated plots, while the other cereal ingredients are mixed with water. Ken's results are shown in the following table.

Experiment 4 series

Further experiments were conducted with the favorable octane diol to determine the amount to be added. As test plants, summer barley, summer wheat and

The table shows the percentage reductions relative to untreated plots. In a solvent of favorable composition, the ratio of water to octane diol is 2: 1;

Experiment 3 also revealed a series.

Values less than the minus sign show a tendency to form cereals65.

The formulations used contain 50% CEP and 50% solvent.

Ratio of water to octane diol Preparation Pha Shrink% summer barley summer wheat 100: 0 2 20 2 3 21 - 8 75:25 2 13 -. 3 18 3 66: 34 2 20 12 3 25 14 50:50 2 17 8 3 18 10 34:66 2 10 10 3 14 9 25:75 2 13 2 3 22 8

Experiment 5 Series

In the following, the shortening of the stems is compared for similar cereal varieties, which was achieved by the addition of urea alone in the standard formulation.

% Urea relative to active ingredient content CEP kg / ha Shrinkage in% summer barley summer wheat 0 1.5 21 8 0.5 1.5 15 1.0 1.5 23

Experiment Series 6

The following table shows the positive effect of the synergistic preparation on stem shortening.

Quantity used Shrinkage in% CEP | Urea octanediol summer barley summer wheat 1.05 21 8 1.05 1 - 0.5 25 14 1.05 1 0.018 0.5 27 15 1.05 | 0,036 0.5 29 16

The active ingredient components are applied with a total of 3001 water per hectare.

Preparation of the corn stalk stabilizer composition e.g. Here's how:

360 g-91.7% β-chloroethane phosphonic acid, 10 g urea and 120 g octane diol are dissolved in 710 g water with stirring. The active ingredient concentrate thus obtained can be stably stored and optionally diluted with water and used as a spray.

In this case, the content of β-chloroethane phosphonic acid is 330 g / l. The above results show that the addition of 0.1-10%, preferably 1-3% urea and / or 10-40% polyhydric aliphatic alcohol to β-chloroethane phosphonic acid produces a much delaying and cereal stabilizing effect on cereals, especially on winter cereals. we would use S-chloroethane phosphonic acid alone.

The additives may be added in ready-to-use form or as tank mixes in stages 7 to 10 of the cereal (Feeke scale), the former being more preferred.

The total amount used can be halved per hectare with the help of additives, so that the load on the crop and the crop is significantly reduced with respect to any residue. The application is more rational and, with the amount available, it seems possible to handle a larger surface.

These findings were very surprising, since higher doses of urea cause a fertilizer effect and, consequently, stem elongation, weight gain and reduced stem stability. The additives provide a significant advantage over the single use of β-chloro30 ethane phosphonic acid.

Claims (3)

Claims 1. A cereal stem stabilizing composition containing β-chloroethane phosphonic acid, characterized in that, in addition to β-chloroethane phosphonic acid, the active ingredient is 0.2 to 2% by weight of urea and / or 5 to 20% by weight of 3 to 8% by weight. It contains polycyclic aliphatic alcohols having 40 carbon atoms, preferably octane diol or hexanetriol and optionally water. An embodiment of the composition according to claim 1, wherein the β-chloroethane phosphonic acid is It contains from 0.1 to 10%, preferably from 1 to 3% urea. An embodiment of the composition according to claim 1 or 2, characterized in that 10-40% of the polyvalent aliphatic alpha, based on the amount of β-chloroethane phosphonic acid. Contains 50 metallics. Responsible for publishing: Director of Economic and Legal Publishing 81.1421.66-42 Alföldi Nyomda, Debrecen - Chief Executive Officer: István Benkő Director