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In laboratory plate studies on the effect of L-histidine on the fungistatic action of 2,4,6- trihydroxybenzencarboditioic acid (TBKD) was recorded. A gradual increase of concentration of L-histidine in the mineral medium at first weakens and then increases inhibitory properties of the system. The mechanism of the molecular co-operation of the amino acid was also discussed.
The influence of IPO-8831 insecticide on the respiration of soil microflora was estimated by determination of respiration modification indexes. Side effects of some of the formulation's components were high (phosalone, xylene), whereas the other ingredients (methoxychlor, deltamethrin, BHT) had only limited influence on the microorganisms population. A possible synergetic influence of the formulations...
The ecological aspect of using of suspensoemulsions in comparison with the using of other formulations such as e.g. EC and WP has been discussed. One example of such commercial product is given. Some difficulties which can take place when farmers are trying to prepare themselves the suspensoemulsions, from commercial WP or SC with EC or WE, is also discussed.
The general characteristics concerning the O/W and W/O as well as droplets and bicontinuous types of microemulsions has been given. The following topics are also discussed: the influence of Winsor parameter R as well as Mitchell and Ninham parameter Sp, on the types of microemulsions and flexibility of their interfaces; the influence of temperature, cosurfactants and concentration of NaCl on optimal...
Embrotoxic and teratogenic effects of carbendazim were examined in Wistar rats for the product containing 98% a.i. of carbendazim and diaminophenazine contamination level of 1,1 ppm. The compound was administered by the oral route to pregnant rats during the organogenetic phase of gestation at doses: 0; 15, 30, 45 mg/kg b.w. and in the other group in diets at the concentration 2000 ppm. We found that...
The advantage of using of suspensoemulsions in comparison with the other formulations has been given. The following topics are also discussed: 1. Criteria of choosing of particular components such as: solvents, surfactants, thickeners, emulsion stabilisers, bacteriocides and some others. 2. Methods of preparing of suspensoemulsions. 3. Methods of testing of concentrated and diluted suspensoemulsions.
Insecticides most often inhibit the development of fungal diseases, but can also stimulate them. The mechanisms of these phenomena are discussed and examples are given. The protective effect may be the result of direct pesticide influence on the pathogen, host susceptibility or other biocenotical components. The important factor is pest control which limits the infection of plants through the wounds...
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