SU577940A3 - Fungicide and method of preventive or sanative treatment of plants - Google Patents

Description

(54) FUNGICIDAL MEANS AND METHOD FOR PREVENTIVE OR MEDICAL TREATMENT OF PLANTS

Vu is poured at a temperature of about 5O with a mixture of 5 g of agar and 0.5 g of acetone solution or a wettable powder containing 1 g / l of the test substance. The wettable powder is prepared by mixing for 1 min in a knife stopper of the following ingredients, the composition: the composition of the active substance (the solvent), the composition of the active layer (20). amount of water. The gelled mixture is allowed to solidify and the-circles of the mycelial micelle culture are placed. A petri dish similar to the previous one, but the gelled content of which does not contain an active substance, is taken as a control sample. After 4 days at 2 ° C, the surface of the observer was measured (in the inhibitory zone i, it was expressed as a percentage in relation to the seeded ground. In these conditions, compound (2) gives 51 and 63% inhibition for Rotrufis dinerea and Septor / ff arp respectively, and joining (5) - 77 and 48% inhibition for de Águapit and Rhirocfonid sofa, respectively. P. 6 p 2. Test in natural conditions (Pfasmorea family /// cola) on grape seedlings. a) Preventive treatment For seedlings of grapes (Gamey grapes) grown in pots, sprayed with pistol sprays, s The degree to Kani, the lower surface of the leaves an aqueous suspension of a wettable powder having sledutshy composition by weight%: Active compound subjected ispytaniyu20 Antiflokirutsntsee agent (calcium lignosulfonate) 5 wetting agent (sodium alkylarylsulphonate) 1 Filler (alumina silicate) 74

with the desired dilution and content of 2.5 g / l of compound (6) under these conditions

a certain amount of active substance provides complete protection, and

va. Each sample is subjected to a test55 (5) and (8) provide good protection three times. The grapes are mildewed that vineyards are charged after 48 hours to cause the systemic nature of these spray connections on the bottom surface.

water leaves asleep approx. Suggestions may be included in

80 thousand spruce / cm spore of the fungus. TX) mixtures with other fungicular phosphorus preservatives, then (5 pieces will be kept for 48 hours in the incubation chamber at 2 ° C of relative humidity.

Control saplings after 9 days after invasion. Under these conditions, it is noted that 0.5 g / l of compound (1), (2), (4), (6) and (7) and 1 g / l of compound (3), (5) and (8) provide good protection. In addition, none of the test compounds showed signs of phytotoxicity. b) System testing by soaking through the roots Several grape roots (Gamey grapes) placed in a cup containing vermiculite and a nutrient solution, are watered with 40 cm of a solution containing about 5 g / l of the substance to be tested. After 2 days, the grapes are contaminated with aqueous lime containing 10O thousand spores / cm and left for 48 hours in a room at 2 ° C and a relative humidity of 100%. The degree of invasion is monitored after approximately 9 days relative to an infected control sample, which is watered with 40 cm of distilled water. conditions noted that at C), 5 g / l of compound (1), (2), (3), (4) and soaked with roots, fully protect the leaves of the vine from the mildew, reveals a systemic character of these compounds. Testing on the system during treatment after infection Several grape roots (Gamey grapes) placed in a cup containing vermiculite and a nutrient solution, are contaminated with 4 O cm of water suspension containing 10 O thousand spores / cm PLasmvrea rifrcufa and left for 48 hours in a room at 20 With and relative humidity 1OO%. After two days, the seedlings are watered with a 4O ct solution containing 2.5 g / l of the active substance being tested. The degree of invasion is monitored after 9 days relative to a supplementary control sample, which is poly 40 cm distilled water.

starchy derivatives that are used against mildews, as well as being mixed with a carrier and / or surface-active substance.

The doses of these compounds used could vary widely, depending on the activity of the fungus and the climatic conditions, generally from 0.1 to 5 g of active substance per liter of wetting agent,

Claims (8)

1. A pungent agent containing an active principle and additives, characterized by the fact that, in order to enhance the activity, it contains as an active principle mineral hypophosphite in an amount of 20-95 wt. % 2.CpetJCTBo under item 1, characterized by the fact that it contains alkaline hypophos (IT. 3. Means according to claim 2, about tl and h and y it with the fact that oio contains ammonium gppofosfit. 4. The means according to claim 1, of which it is alkaline-earth hypophosphite. 5. The medium according to claim 4, that it contains calcium hypophosphite. 6. The agent according to claim 4, wherein it contains hypophosphite magnesium. 7. The means according to claim 1, of which is contained in that it contains a hypophosphite of a metal selected from the group containing iron, copper, nickel, margan: pepper, zinc 4 aluminum. 8. prophylactic or therapeutic treatment of plants against fungal diseases, characterized in that the treatment is carried out with an agent according to claims. 1 7 when its content is 0.01-5.0 g / l. Sources of information taken into account in the examination: 1. USSR author's certificate NO 140290, cl. And 01 N 11 / OO, 1961. 2. A brief guide to dohimikatam. M., 1973, p. 68, 110.