PL99328B1 - AGENT FOR STABILIZING CEREAL PLANTS - Google Patents

Description

The subject of the invention is a new agent for stabilizing the stalk of cereal crops. It is known to stabilize small crops due to its morphological properties, the tendency to lodging, especially cereals, the way of treatment with acid (3-chloroethanophosphonic acid at the appropriate stage of vegetation. Recently, the use of β-chloroethanephosphonic acid to stabilize the rye grain has gained great practical significance. The use of (3-chloroethanephosphonic acid) not only avoids the disadvantages caused by lodging, such as the difficulty of machine harvesting, crop yields and quality deterioration as a result of sprouting, but also increases the yield in non-deposited cereals. Since the production of (3-chloroethanophosphonic acid requires relatively large inputs, it is desirable to use as little as possible without reducing it " however, the stabilizing effect of the gums. The object of the invention was to find new means It was surprisingly found that the addition of small amounts of urea to β-chlorophosphonic acid made it possible to significantly reduce the doses of β-chloroethanophosphonic acid required so far. Increasing the growth retarding effect by adding urea. It is all the more surprising that urea additives in growing plants generally have a fertilizer effect and lead to an acceleration of growth. Moreover, it has been found that the combination of urea and acid (3-chloroethanophosphonic acid exceeds the biological effect of the Thus, there is a synergistic effect of my phosphonic acid with urea alone. A further advantage of using the agent according to the invention is that it reduces the burden on soil and crops with foreign substances. Urea is preferably used in an amount of 0.1-10 %, in particular 1-3%, based on the weight of the P-chloroethane phosphonic acid. It is irrelevant whether the individual components of the agent are mixed together and diluted with water at the appropriate time to form a spray, or whether they are used individually only at the time of dosing. Both methods of application lead to the same results. In the following, greenhouse and field tests are described. Various types of cereals are used as test plants. The criterion of the effect of the tested mixtures was the reduction of the length of the shoots of the test plants as well as the determination of grain yield and lodging tendency. Determination of the results is carried out in the greenhouse and in the field according to a hericide scale and by measuring the length of the treated plants one week before harvest, or 99 3283 99 328 4 at the end of the trial. Apply. the following scale: l = no action, 9 = very good herbicidal action. The most advantageous effect of stabilizing the ridge is obtained at values of 3-4, because higher values are already in the phytotoxic range and may reduce crop yield. The preparation of 3-chloroethanephosphonic acid (CEP) used for the tests contains 50% active ingredient (AS). The amount of spraying liquid used is 300 liters per hectare. Example I. Greenhouse test with CEP and urea addition Preparation untreated with CEP 2.5 kg AS / ha urea 25 g / ha urea 37.5 g / ha CEP 2.5 kg AS / ha + urea 25 g / ha CEP 5 kg AS / ha + urea 37.5 g / ha CEP 5 kg AS / ha urea 50 g / ha urea 100 g / ha CEP 5 kg AS / ha + urea 50 g / ha CEP 5 kg AS / ha + urea 100 g / ha Reduction of the blade length Winter rye 1 1 1 1 3 2 Winter barley 1 1 1 1 2 1 1 1 1 3 3 oats 1 2 1 1 Example II. Field test with CEP and addition of urea with winter rye (Danae grade), treatment period F 9 (Feeke's 9 scale) Preparation 1 untreated CEP 1.5 kg AS / ha CEP 2 kg AS / ha + urea 15 g / ha CEP 1.5 kg AS / ha + urea 15 g / ha CEP 1.5 kg AS / ha + urea 30 g / ha CEP 2 kg AS / ha + Table reduction in% 2 0 14 19 Grain harvest in g / l, 2 m2 3 321 389 407 456 424 Stable plate (1 means 100% lodging) 4 1 8 9 | 9 9 1 urea 20 g / ha CEP 2 kg AS / ha + urea 40 g / ha 2 21 3 428 445 4 1 9 9 | Example III. For comparison, for the same types of cereals, the percentage reduction of the tooth obtained with the standard recipe with the addition of urea alone is presented below: Urea in% to AS 0, 0.5 1.0 CEP kg / ha 1.5 1.5 1.5 Shortening the teeth in% 1 spring barley 21 23 spring wheat 8 PL

Claims (2)

Claims 1. An agent for stabilizing the thorn of cereal plants, characterized in that, in addition to β-chloroethane-phosphonic acid, it contains urea as active substance. 2. The measure according to claim The method according to claim 1, characterized in that it contains urea in an amount of 0.1-10% n, preferably 1-3%, based on the amount of (3-chloroethane-phosphonic acid.). that the addition of urea in an amount of 0.1-10%, preferably 1-3% to p-chloroethanephosphonic acid improves the effect of slowing the growth and stabilizing the chaff of cereals, especially in winter cereals, in relation to the P-chloroethanophosphonic acid used These additives can be used as ready-to-use preparations or as tank mixes for the cereal stage 7-10 (according to the 30 Feeke scale), the former being the more preferred. These additives reduce the overall amounts used for hectare to a half so that the burden on legal and harvested crops is significantly reduced in terms of possible residues 36. The measures are used more rationally, and the amount of the product can be treated much larger. These results are unexpected, as the higher doses of power disappear, they have a fertilizing effect and therefore cause a prolongation of the tooth, a greater weight gain and a reduced durability of the tooth. Thanks to these additions, you get great benefits in equation with the use of O-chloroethanephosphonic acid alone as a stabilizer for the gum. OZGraf. Lz. 1491 circulation 90 + 17 copies Price PLN 45 PL