W przeprowadzonym doświadczeniu badano wpływ temperatury inkubacji na wzrost grzybni, kiełkowanie zarodników oraz indywidualny efekt biotyczny (IEB) grzybów Trichoderma harzianum, T. pseudokoningii i T. viride. Temperatury w zakresie 5-15°C hamowały wzrost grzybni i tworzenie strzępek kiełkowych badanych izolatów Trichoderma spp. Również wartość IEB zależała od temperatury. Wszystkie izolaty Trichoderma spp. silnie ograniczały wzrost patogenów tylko w temperaturze 20°C.
The effect of irrigation of sugar beet on the number of total soil microflora (bacteria - B, actinomycetes - P and fungi - G), the biotic relations index [(B + P)/G], the number of some physiological groups of microorganisms and fluorescence bacteria from the genus Pseudomonas as well as fungi from the genera Pythium and Fusarium and the Aphanomyces cochlioides inoculum potantial was studied for many years with a constant and optimum fertilization in an experiment carried out in Kruszym Krajeński on a very light soil. It was shown that on the supplementary irrigated plots the developed system of biotic relations was more correct in respect of soil fertility and healthiness than that on the non-irrigated plots. Total number of bacterial microflora, including cellulolytic and pectinolytic bacteria, and bacteria solubilizing calcium phosphate, and actinomycetes, increased as affected by the treatment. It was accompanied by a parallel decrease not only of fungi population, among them those solubilizing calcium phosphate and plant pathogens from the genus Fusarium, but also of potential soil antagonists - bacteria from the genus Pseudomonas, while the number of lower fungi from the genera Pythium and Aphanomyces increased.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.