Growing of crowning yearlings in garden nursery depends on elements of agricultural machinery, which have different effects on the angle of divergence and the number of skeletal branches formed. With the reduction of the period of growing branched yearling costs are lower for planting material, because of exception work in the nursery with two-year seedlings
The article shows the results of two years of research of the impact of various technologies of cultivation of winter wheat with alfalfa predecessor
The results of the experimental studies are published, according to which the influence of dense forest belts on wind regimen and moisture storage of agroland-scapes is defined by phytomass of the stand
The article presents the results of three-year researches of root-formating ability of grafts of 9 resistant table and technical grape varieties of native and foreign selection at their rooting in water.
Among studied indexes of root-formaing ability of grafts, the best varieties were Moldova, Lyana, Riton and Pervenets of Magarach
The article brings the results of three-year studies of the
influence of the periods of sowing on productivity of
new varieties and lines of winter barley
A comparison of quantitative and qualitative performance of the selected clones of breeding of A.S. Yablokov and S.N. Bagaev has been made. At the same forest conditions, the clones are much higher than regular at reserves, the absolute completeness, the average heights and diameters of trees. Gigantic forms of P. tremula L. are resistant to infectious diseases, and at the fifth grade are characterized by good sanitary condition. We have also shown the economic feasibility of using of fast-growing clones in the genetic reserve for the organization of giant aspen of P. tremula L. plantation
The article represents the results of the experiments on biological activity of humits of different sorts. The object of research was humic preparation called Vermistar, which was obtained by vermiculturing, on the basis of brown coal. Humics are group of high-molecular substances which have high physiological activity. Humic substances stimulate all biochemical processes on all the stages of plant growth. They change the permeability of the cell membranes, increase activity of ferments, amount of chlorophyll and productivity of photosynthesis. Also humits are not toxic; they don’t have carcinogen and mutagenic effects, so we have a chance of getting environmentally friendly products. The experiment results show high biological activity of humic preparations. Usage of humic stimulates germination, the accumulation of vegetative mass, weight gain. The frequency of shoot has been increased by 17-32%. Height of shoots, roots and vegetative mass has also been increased
This article presents the data of the research of new
feed additives’ effects on the dynamic of
hematological indexes and milk productivity of cows
The article presents the results of the studies of the effect on heifers of Red Steppe breed and hybrids, inclueding their growth, form of the udder, milk production. The cows breed was improved by Ayrshire bulls and red -and-white Holsteins in the South zone of the Rostov region
The article compares the basic biotech properties of beef of new meat breeds and determines the potential of their use