SU1105139A1 - Combined seed treater - Google Patents

Abstract

A COMBINED SEED PROTECTOR based on tetramethylthiuran disulfide, characterized in that, in order to prevent fungicidal activity, it additionally contains tricaprolactamome (ii) dichlorand monohydrate with a ratio of 3-5: 3,

Description

About the invention The invention relates to chemical plant protection products, in particular, seed treatment agents, and can be used in agriculture. A known seed treatment is tetramethylthiuram disulfide (TMTD), which is recommended as an 80% wettable powder for pulses. This preparation suppresses harmful fungal microflora, but is not sufficiently effective against bacterioses of soybean and sunflower seeds. A known seed disinfectant is n-tricaprolactamome (C) dichloride monohydrate (cartocide), which exhibits fungicidal activity against phytophthora of postomat D21. However, in the known preparations, fungicidal activity, in particular, as seed disinfectants, is insufficient. The purpose of the invention is an increase in fungicidal activity. This goal is achieved by the fact that the seed disinfectant based on tetramethylthiuramide disulfide additionally contains tricaprolactamome () dichloride monohydrate with a ratio of components of 3-5: 3. The combined seed treater is used in the form of wetting powders containing,%: Pesticide 10-90 Disperser 2-10 Filler Remaining (up to 100) The investigated drug contains a mixture of TMTD and cartocid as a dispersant, alkylaryl ethers, as a pesticide. lenglikol and polypropylene glycol (OP-7) and sulfite-alcohol bard (sowing), and kaolin as a filler. With the exception of the active substance (a mixture of TMTD and cartocid), the remaining components of the powder do not have any influence on the activity of the preparation as seed protectants. Preparations are prepared by mixing after pre-grinding of all components in a ball mill for 5 minutes. The grinding module is 1: 3, the speed of rotation of the mill vessel is 250 rpm. Fine grinding of the mixture components is carried out on a laboratory air mill jet mill at a compressed air pressure of 7 atm or on a Alpina pin mill. TMTD (40%) and cartocid (30%) are mixed and the kaolin filler (the rest) is added, containing OP-7 excipients (5%) and PRS 5%. Preparations of protravitel are prepared in a similar manner in other ratios of active components. The amount of filler in them is 20-40%. The proposed disinfectant has been tested on the seeds of various agricultural crops. Example 1. Soybean seeds are treated with preparations containing TMTD and cartocide up to 30% of each component and a mixture containing 30% cartocid and 40 and 50% TMTD, in order to protect them from the complex of mold pathogens. The treated seeds are laid out in Petri dishes on a moistened filter paper and left for 5-6 days at 22-26 C. Next, the infection of the seeds with mold pathogens and seed germination are determined. The test results are presented in Table. one . The tested mixtures of cartocid with TMTD in ratios 3: 4, 3: 3, 3: 5 show high activity against seed mold pathogens. The germination of seeds in these variants is higher than in the processing of seeds with separately taken components. Example 2. Studies were carried out in a greenhouse on soybean seeds against a complex of pathogens of root rot. Bean seeds are treated with the proposed mixture of preparations and sown in vessels with soil (volume 5 kg). In each vessel, 50 pieces are sown. Repetition 4-fold. The vessels are left in the greenhouse at 20-26 ° C. When seedlings appear, seed germination and root rot damage are determined. The test results presented in table. 2 show that the mixture of carotid with TMTD effectively protect the seedlings from the complex of pathogens of root rot. Example 3. The proposed mixtures are used as seed disinfectants for sunflower seeds against the complex of mold pathogens.

sem n Sunflower seeds are treated with preparations and sown in vessels with soil (soil weight 5 kg) in 25 pieces each. Repetition is 6 times. With the emergence of seedlings and during the initial growth of plants, the damage to their root rot is determined. At the same time, the germination of seeds is determined.

The test results presented in table. 3, show that in the processing of sunflower seeds with mixtures of cartocid and TMTD, a significant reduction was achieved in the damage to seedlings and plants by root rot and an increase in seed germination.

Example 4. The proposed mixtures are used against soy bacteriosis on seeds and present leaves. Soybean seeds are infected with a suspension of the bacterium Pseudomonas Phaseoly (per 1 kg of seed 2 tubes of a 2-day culture of bacteria with 50 ml of water), then pickled with drugs and seeded into a vessel with soil, as in example 2. In the control, soybean seeds infected with a suspension of bacteria are seeded, but not pickled. When seedlings appear, the infestation of the seed and, further, of the present leaves, is determined by bacteriosis. Simultaneously, the germination of seeds n.

The test results presented in table. 4, show that, when treating seeds with soybean with mixtures of the preparations, the damage to the seedlings of the soybean plants by bacteriosis is reduced.

Thus, the proposed combined seed disinfectant possesses a high activity against the complex of the causative agents of seed mold, root rot, soybean bacteriosis, and sunflower root rot. The application of the proposed seed treatment allows the seeds to be completely free from pathogenic infection, due to which seed germination rises by 15-30% compared with the control and by 10-15% compared with the known treater. The yield increase will be 5-10%.

Table 1

Cartocide (3: 4) 30

TMGD 40

Cartocide (3: 3) 30

TMTD 30

Cartocide (3: 5) 30

TMTD 50

TMTD 80

Kartotsnd 50 Control

table 2

2.6

0.5 3.1 0.5 2.4 0.5 7.2 6.3 18.4

Table 3

Claims (1)

COMBINED SEED DRILLER based on tetramethylthiuram disulfide, characterized in that, in order to increase fungicidal activity, it additionally contains tricaprolactamide (ί) dichloride monohydrate in a ratio of 3-5: 3. f 1105139 2