CS239410B1 - Liquid concentrate of trace elements - Google Patents

Abstract

Liquid trace element concentrate containing 100% by weight parts of the concentrate 5 to 35 wt parts of a salt or mixture of zinc salts and / or medium, 5 to 30 parts by weight of acid amber, 0.42 to 16.5 wt nitrogen in ammoniacal form and 20 up to 65 parts by weight of water. concentrate has use in agriculture.

Description

(54) Liquid trace element concentrate

Liquid trace element concentrate containing, in each 100 parts by weight of the concentrate, 5 to 35 parts by weight of a salt or mixture of zinc salts and / or media, 5 to 30 parts by weight of succinic acid, 0.42 to 16.5 parts by weight of nitrogen in ammoniacal form; 65 parts by weight of water. The concentrate is used in agriculture.

The invention relates to a liquid concentrate of trace elements based on succinic acid.

Trace elements, which improve the quality of agricultural production and are often a limiting factor in crop yield, are still a part of plant nutrition. In the function of activators, stimulators and catalysts, the plant organism controls the biochemical processes of the formation of amino acids, chlorophyll and the like.

The deficiency of the respective trace element is compensated by the application of technical salts or salt chelates. In view of faster leaflet nutrient uptake than through the plant root system, foliar application is recommended when a deficiency of which microelement is found. It is also shown that the resorption of trace elements in the chelated form through the leaf is about 2.5 times faster than the respective ionic forms.

The chelate bond, in addition to providing high mobility and resorbability of trace elements in the soil solution, prevents the segregation of trace element salts from mixtures with liquid multicomponent fertilizers and pesticides. The binding of trace elements to the chelate is necessary especially in the case of co-application with phosphorus-containing liquid fertilizers.

For chelating trace elements to chelates, chelating agents are used. the complexing agents may be synthetic ethylenediaminetetraacetic acid, citric acid and the like (or natural) derivatives of lignosulfonic acid, humic acids, polyflavonoids and the like). Polyphosphoric acid salts are also characterized by their ability to disintegrate in relation to microelements (U.S. Pat. 3,620,708, 1971). The method of stabilizing aqueous solutions of trace elements by adding alkylcellulose is the subject of Cs. ÁO č. 93 253.

We have now found a liquid trace element concentrate according to the invention.

The essence of the invention is that each 100 parts by weight of the concentrate contains 5 to 35 parts by weight of a salt or a mixture of zinc salts and / or a medium, 5 to 30 parts by weight. parts of succinic acid, 0.42 to 16.5 parts by weight of nitrogen in ammonia form and 20 to 65 parts by weight of water.

Furthermore, it has been found that, due to the low solubility of succinic acid in water, it is necessary to add ammonia water to the system to prepare steppe concentrates or secondary nutrients based on this flavorant.

The use of alkali hydroxides to dissolve succinic acid is disadvantageous in view of the subsequent excretion of the corresponding hydroxides after addition of the trace element salt or secondary nutrients.

It has also been found that for the stability of succinic acid concentrates it is advantageous to maintain the pH in a slightly alkaline range.

The advantage of trace element concentrates or secondary nutrients according to the invention is that they contain the respective micronutrient and / or micronutrient. a secondary nutrient in a chelated form, which is used not only for single application, but also in mixtures with liquid multicomponent fertilizers, including phosphorus-containing fertilizers without the risk of developing low-soluble and heavy-resorbable metal phosphates, as well as in mixtures with selected pesticides.

A further advantage of the concentrates according to the invention is that succinic acid not only functions in the said compositions. but also as a growth promoter (auxln). These examples illustrate but do not limit the scope of the invention.

Example 1

Based on industrial succinic acid (81.3%), ammonia water (24.6% NH4), ZnSO4. Hg ₀ (7 HgO) and water were prepared liquid zinc concentrate Specified as follows:

6.53% Zn 11.58% succinic acid

9.93% NH4

47.43% by weight of water

PH = 8.5

Specific gravity dg ₀ o _c = 1 205,8 kg m ^- ^

Crystallization temperature: -12.8 ° C

Solubility with liquid fertilizer 8-24-0 (7.9% N; 23.8% PgO 4): 2.65 g of concentrate per 100 g of 8-24-0 resp. maximum ZN: PgO4 ratio = 7: 1,000.

Example 2

Analogous to Example 1 based on technical succinic acid (81.3 wt%), ammonia water (24 _ř 6 wt% NH4, CuSO4, 5 HgO, and water), a liquid Cu concentrate was prepared. Specified as follows:

4.28% Cu by weight

6.96% NH4

9.50 wt% succinic acid 45.52 wt% water pH = 8.4

Specific gravity dg ₀ OQ = 1 125,6 kg m ”

Crystallization temperature: -9.8 ° C

Mixability with liquid fertilizer 8-24-0 (7.9% N; 23.8% PgO 4): 3.2 ⁸ concentrate (100 g 8-24-0 or maximum Cu: PgO 4 ratio = 6: 1,000 .

Claims (1)

OBJECT OF THE INVENTION Liquid trace element concentrate, characterized in that each 100 parts by weight of the concentrate contains 5 to 35 parts by weight of a salt or mixture of zinc salts and / or media, 5 to 30 parts by weight of succinic acid, 0.42 to 16.5 parts by weight of nitrogen in emmoniacal 20 to 65 parts by weight of water.