The article contains complex research results dedicated
of reproduction the cattle of the animal breeding
industry in the agricultural holding called “Kuban”.
Key indicators characterizing reproductive function at
cows were set; they were estimated in terms of the
plans of the economy in the milk cattle breeding
industry. The reduced values of the birth-rate of calves
were revealed on 100 cows and in the term of the
production use of cows, their main reasons were set.
The performed calculations prove the possibility of
increasing the profitability of milk production
The research about effectiveness of ammonium
nitrate with sowing and in phase of corn 5-6 leaves and row spacing cultivation before straw mulching was done in 2011-2013. The scheme of trial
included the variants with straw mulching and
without it. The variants without fertilizers and with small doses of them on background without mulching gave higher yield of cobs milk maturity then with mulching. But variants with maximum fertilizers (with sowing N30 and in phase of corn 5-6 leaves N30) gave maximum yield of cobs milk maturity 16,4 t/ha that is higher then similar variant without mulching for 1,7 t/ha. These results were confirmed by analysis of characters of growth and development of corn plants, productivity, and economic effectiveness. Therefore, net profit on variant with fertilizers with sowing N30 and additional fertilizing N30 on background of straw mulching increased for 75490 rubles for 1 ha in comparison with similar variant without mulching. The profitability on the best variant was 335 %
This article summarizes results of the research on the
assessment of soil erosion effectiveness of crops and
the rationale of the practical application of phytomeliorative
actions aimed at improving the erosion resistance
of slope lands. We have obtained values of the
resistance of soils to erosion under agricultural crops
and in terms of pure steam and calculated the indicator
of the efficiency of soil conservation crops. The tests
allowed differentiating the crops on well, poorly and
very poorly in protecting forest soils from erosion
Obtaining a high intensity of growth calf in dairy period contributes to the feeding of the high daily doses of milk (8-10 kg) and schooling to early eating plant forage, which increases their live weight by 11.4-15,1%, growth energy - 13,2-16.5% and reduces the cost of feed per 1 kg of body weight gain of 4.6-8,6%
The article is devoted to the investigation of the influence of applying elevators waste to the soil on the content of ions Ca2+, K+, NH4+ , NO3 - and photosynthetic pigments in leaves of plants of winter wheat in the cultivation of the leached black soil
In the article the historical and social analysis of placement and specialization of agricultural production is provided in territorial borders of the subject
The extensive overview of the currently used herbicides antidotes of agricultural crops is reviewed in this article. The most important results are discussed and the technology of combined application is described
The article presents the results of studying the impact of different options for cutting fruit vines on the growth and productivity of shoots of the grapes. The obtained experimental data indicate the excessive overload of vines with eyes and shoots when performing contour trimming bushes without normalizing the choice of shoots, in comparison with other variants of experience. A significant increase of eyes on the vines when performing contour cutting was because during this method of cutting, the cutoff is at a certain level all the shoots are horizontal on the arm vines. A big load of vines shoots when performing contour cutting has reduced the length of shoots at 48 – 51%, and leaf area developed on the shoots of 53 – 54%. While the lowest productivity was different shoots developed on the vines in 3 variant, because here the contour cutting vines was not accompanied by a subsequent breaking of superfluous shoots, which have overloaded the bushes shoots. At the same time, contour cutting vines with subsequent breaking of the normalizing excess shoots were allowed to grow for fruiting the bushes a sufficient amount of normally developed shoots with high productivity and good quality bunches
The aim of work is to get prognostic equation, providing analytical description of height dependence on diameters by thickness of steps for forest stands of Krasnoyarsk forest-steppe.
The article presents the results of the research of the formation of hierarchical structure in a group of roosters while being in the close space of a cage. Stable hierarchical relationships in the group could only be formed with a certain amount of roosters included in it