PL75865B2 - - Google Patents

Description

Priority: Application announced: May 30, 1973 The patent description was published: January 15, 1975 75865 W- 451 / 9/02 MKP A01n 9/02 Inventor: Jan Kulesza Authorized by the provisional patent: Forest Research Institute, Warsaw (Poland) Insecticide The subject of the invention is a non-toxic insecticide, which is a water solution of urea herbicides, urea and its salts as well as manganese salts and potassium chloride. Until now methods of chemical plant protection consisted almost exclusively of the use of pesticides * polytoxic poisons with low selectivity of action. All synthetic insecticides used to combat harmful insects, both chlorinated hydrocarbons (DDT, HCH, aldrin, toxaphene, etc.) as well as organophosphorus compounds (systox, parathion / malathion, phosphine, DDVP, chlorfenvinphos, phenitrothione) or derivatives of carbomic acid (sevine, undene) very strongly disactivate certain enzymes in the body of all animals, not only insects In animals and humans, there are generally no permanent poisoning, but only some transient symptoms of nervous irritation. Frequent contact with nonkiidy insecticides causes their accumulation in tissues, which causes permanent degenerative changes in nerve centers. Careless handling of some insecticides, such as DDT, has led to such a widespread use of this poison in the habitats of life that it is found in the meat of animals, fish, sea water, milk, bird eggs, etc., and this has resulted in a retreat from permanent insecticides. • - - "Organophosphates and carbamates, also used to control insects, are generally less persistent, and their decomposition products do not accumulate in animal tissues. Most of these compounds are, however, highly toxic, and some of them have even been found to be teragogenic. Therefore, safer pest control agents are sought by the use of, for example, repellants or agents that induce sex sterilization of insects (chemosteroids) or attracting to poisoned zero sites (attractants), and by the use of food poisons. These nods have so far not yielded positive results. In order to avoid the harmful effects of insecticides on the environment, the goal was to develop a non-toxic insecticide. This goal was achieved through research on finding methods to increase the natural resistance of plants to attacks by pests and parasites by the use of active compounds physiologically, evoking 2 76 865 • profound changes in plant metabolism, interfering with the normal nutrition of insects, and subsequent destruction, with particular attention being paid to those nitrogen compounds that cause rapid changes in plant osmotic pressure. The fastest changes in plant metabolism evoke chemical compounds used to destroy plants, i.e. all kinds of herbicides, which in low concentrations also have the properties of activating plant growth. According to the invention, the non-toxic insecticide completely eliminates the risk of environmental poisoning and beneficial animals. It is based on the combined use of non-poisonous chemical compounds to combat insect pests, which are capable of inducing rapid changes in plant biochemistry and osmotic pressure in plant tissues. One of the more easily available indicators of the right course of action are the results of measurements of osmotic pressure and the rate of changes in one of the chosen directions of metabolism: nitrogen, carbohydrate or phosphorus. The best results were obtained with the use of chemical compounds accelerating the accumulation of nitrites and nitrates in Scots pine needles (urea, urea nitrate, urea oxalate, urea hydrochloride), reducing the content of reducing sugars (urea herbicides) and increasing the content of organic acids in the needles (a mixture of manganese salts) and potassium chloride). Urea and its derivatives cause large spikes in osmotic pressure in the treated plants. It has been found that they have a strong destructive effect on the null caterpillars of harmful insects such as pine beetle, dandelion moth, pine borwort, stellate envelope is used at a rate of 20 to 30 kg per 1 hectare of protected forest stand, an aqueous solution of 10-20% of a mixture consisting of 30% by weight of urea herbicide, especially N - 4 - chlorophenyl - N - dimethyl urea or N - (4-chlorophenyl - 4HT-methyl-NMzobutinyl-urea, or 3 - (4- (4-cldorophenoxy) phenyl) -1,1-dimethylurea or N-cyclooctyl-N \ N * -dimethylurea, or N- 4-bromophenyl-N-methyl-N-methoxyurea, 40% by weight of urea oxalate, 20% by weight of manganese sulphate and 10% by weight of sodium chloride This solution is quickly absorbed by pine needles and after 24 hours the osmotic pressure in the tissues increases by 100 to 300% and the content of nitrites and nitrates as well as organic acids by 50 d by 200%. In addition, there is a temporary decrease in the sugar content of 50 to 60%. The induced changes usually last 8 to 14 days, then everything returns to normal, except for the organic acid content, which remains high in the needles for about a year. After 3 to 4 hours from the spraying with the insecticide solution, the insect caterpillars stop netting and after 4 to 5 days they fall dead. PL

Claims (1)

1. Patent claim An insecticide consisting of a mixture of urea herbicides, urea, its salts and oxidation products as well as manganese salts and potassium chloride, characterized in that the aqueous solution of 10-20% contains 30% by weight of urea herbicide, especially N- (4-chlorophenyl) -N \ N'-dimethylurea, N- (4-chlorophenyl ^ N ^ methylprNMzobutinyl-urea, 3- (4- (4-chlorophenoxy) -phenyl) -1,1-dimethylurea, N-cyclooctyl -N- , N'-dimelylurea, N- (4-bromophenyl) -N, -methyl-N'-methoxy urea, 40% by weight urea oxalate, 20% by weight manganese sulphate and 10% by weight sodium chloride. order 1686/74 quantity 120 + 18 Price PLN 10 PL