Soil profiles were made in intensive apple orchard in the agricultural enterprises in Lipetsk and Tambov regions in 2015. Drip irrigation in year rates of 500-550 m3 was carried out since 2010. During the research we determined the soil density, the solid phase density, aggregate composition, particle size distribution, the content of hydrolyzable nitrogen and humus by conventional methods. As a result of drip irrigation can increase dust-like fraction in dark gray forest soil, whereas in chernozems this index did not change significantly. In the black earth soil was noted the process of increasing the proportion of mud fraction due to mineral part chernozem destruction. In both soil types was increased sand content. It was found that drip irrigation improves some of the soil water-physical properties, such as a soil structure coefficient and the content of agronomical valuable aggregates in a layer of 20-40 cm. There was also noted that with increasing soil depth was reduced humus and hydrolyzable nitrogen content. In aggregate analysis, it was found that dark-gray forest soil the amount of water-stable aggregates increased, while meadow chernozem leached soil decreased. Data of the aggregate analysis revealed that in the dark-gray forest soil the amount of water-stable aggregates increased as a result of drip irrigation, while in meadow chernozem leached soil decreased. It recommends by drip irrigation application permanent monitoring of the soil humus content
The article deals with the issue of improving the
profitability of sheep breeding by using improved
mutant genotypes in the breeding system. The results
of studies of the main indicators of economic-useful
traits are given, the dynamics of growth, level and
quality of wool productivity of sheep of improved
genotypes obtained on the basis of such breeds as
Soviet merino and Stavropolskaya, as well as firstgeneration
daughters cultivated in themselves are
estimated. It was found that at birth, the live weight in
the groups of the 3 group (the breeding of half-blooded
hybrids "in oneself") was higher than that of the
females from the 1 and 2 groups, respectively, by 0.50
kg, or 13.1%, and by 0.20 kg or 5.2% (P> 0.95). At a
more senior age, the young, having a large live mass at
birth, retained its rank position. The highest indicator
of the cutting of physical wool was observed in animals
of the 2 group, obtained as a result of the use of sheepproducers
of Stavropolskaya breed on sheep of the
Soviet merino. The parameters of the 1 and 3 group
were lower by 0.6 kg - 12.3% and 0.17 kg - 3.5% (P>
0.95), respectively. The conclusion is made that the use
of sheep-producers of the Stavropolskaya breed on the
uterus of the Soviet merinos breed had a positive effect
on the wool productivity and the live weight of the
hybrid offspring. Further breeding of half-blooded
hybrids “in oneself” showed the possibility of
reproducing improved genotypes without losing the
acquired qualities
The article is devoted to the various elements of the cultivation technology of winter wheat called Antonina with the application of different soil fertility backgrounds, fertilizer norms, and plant protection systems against weeds, pests and diseases. Investigations are carried out in a multivariate stationary experiment: factor ‘A’- soil fertility; factor ‘B’ - fertilizer system; factor ‘C’ - the system of plants protection; factor ‘D’ - the main methods of soil tillage. Four models of soil fertility levels were studied in the experiment: А0 - initial (natural background); А1 - medium (200 kg / ha Р2О5 and 200 t / ha of solid manure); А2 - high (double dose); at А3 - high (tripled) on three backgrounds of basic soil tillage: nonmoldboard, recommended, moldboard with deep bursting and without the application of tillage (direct seeding and the natural rate of soil fertility). The soil is heavy leached black humus with humus content in the arable layer of 2.5% - 2.9%. Based on examined researches it was found that for the sustainable yield of winter wheat the dose of mineral fertilizers should be increased, by that, the high quality of the grain is provided
The article presents the materials of research on
studying of influence of various levels of crude fat in
the complete feed (CF) for the young geese of
Lindovskaya breed on chemical composition and
organoleptic quality of goose meat. In the
experimental groups we increased the concentration of
crude fat in the start and finish of the CF to 7.4 % and
6,85 %, respectively. As the lipid supplement, we used
sunflower oil. It is established that muscle tissue of
geese, consuming finishing CF with sunflower oil, has
a more pronounced taste, odour, tenderness and
juiciness. We may highlight the tendency to increase
the proportion of monounsaturated oleic acid, in the
background of the decrease of specific weight of
palmitic acid in the fat muscle 60 day goslings who
received the start and finish of CFs with the addition
of sunflower oil
For the research period (2003-2016), 57 pest species
and 46 pathogens were recorded on stone and
pomaceous fruits in humid Russian subtropics,
among which the representatives of the order
Lepidoptera and the division Ascomycota
predominate. The greatest number of the species was
recorded on the apple tree - 35 pests and 25
pathogens, the smallest - on cherry and sweet cherry
trees (13 and 10, respectively). 43,7 per cent of the
species are polyphages, while the relative abundance
of monophages among fungi is higher than among
arthropods. The species with activity in the summer
are prevalent. A group of species that are harmful in
humid subtropical environments all year round (11
species of phytophages and 19 pathogens) was
identified. Analyzing the changes in the species
composition of the complex through the time, we can
speak about the relative stability of the dominant
species. The group of the typical dominant species of
pests for almost a century has included Grapholita
molesta Busck., G. funebrana Tr., Cydia pomonella
L., Taphrina deformans (Berk.) Tul., Stigmina
carpophila (Lév.) M.B. Ellis, Monilinia laxa (Aderh.
et Ruhland) Honey, M. fructigena Honey,
Podosphaera leucotricha (Ellis & Everh.) E.S.
Salmon, Venturia carpophila E.E. Fisher and pear
V. pyrina Aderh. Eriosoma lanigerum Hausm.,
Scolytus mali Bechst. and Tranzschelia prunispinosae
(Pers.) Dietel are currently dropped out
from the group of the dominants; Halyomorpha halys
Stål, which is a new pest for Russia, was added.
Groups of the species with sharp fluctuations in
abundance or frequently encountered were
distinguished
The contents of lead in soils are primarily determined by regional factors: the composition of parent rocks, relief, climate, vegetation. In recent years, these factors have increased the anthropogenic source of element. In order to assess its impact, requires knowledge of the natural, i.e., background lead levels, the so-called reference points, which can later be used to monitor changes occurring in the soil. Under background refers to the content of the element in soils at a great distance from the areas of receipt of contamination. Background content of lead in each type of soil depends mainly on composition of parent rocks. The correlation coefficient between the content of lead in parent rocks and soils, with the background contents is equal to 0,86±0,17 at p=0,95. For each soil type there are low variations in lead content due to the composition of parent rocks. Lead concentrations in the soils increased at the expense of its receipt from the atmosphere, irrigation water, drainage during mining, as a result of agricultural use, lead containing chemicals. Comparing the obtained results with existing currently permissible concentrations (APC, MPC) it is necessary to note that the lead content in leached chernozem soil after three rotations of the rotation may not cause any pathological changes or anomalies in the course of biological processes and lead to accumulation in the agricultural plants, and therefore may interfere with biological optimum
The influence of the crop rotation type, predecessor and different doses of mineral fertilizers on the yield of winter wheat varieties was investigated and bioenergetics estimation was given. Investigations were carried out in the North-Kuban Agricultural Experiment Station in two ten field crop rotation: grain tillage and grain - grass tillage rotation of prolonged stationary experience. The soil is the black soil, low in humus, powerful, with humus content (0-30sm), depending on the power of nutrition backgrounds in the arable soil layer. It was found that the selection of predecessors and the differentiated application of mineral fertilizers ensure stable high yields of grain and they exceed the varieties without fertilizers by 40-79%. Winter wheat yield depends on the crop rotation of 8-15%; from its predecessor - 15-18% and 27-31% of the fertilizer. A strong correlation between yield and agronomic methods was determined. The most effective predecessor for the wheat cultivation by the turnover of furrow slice is sainfoin, peas and wheat. More labor intensive and energy-consuming predecessors are grain maize and sugar beet
The trials were conducted in 2013-2015. Research objects: apple trees cv. Zhigulevskoye/62-396, year of planting – 2007, at 4,5x1m. Place of research – experimental orchard of ”I.V. Michurin Federal scientific centre " in Tambov region. The goal of research: to study the effect of fertigation and foliar nutrition in an intensive apple orchard. During the research there were done yield records, was determined the content of nutrients in leaves and soil. In the soil there was also determined humus content and acidity, fruits were analyzed on vitamin C, saccharides and organic acids contents. Nitrogen in leaves and soil was determined by Kjeldahl method, phosphorus by photocalorimeter KFK-3, potassium and calcium by flame photometer Jenway PFP-7. We have established the optimal average application rate for fertigation in conditions of the Central Chernozem zone of Russia, which could be used to calculate specific application rates with data of soil-leaf diagnostics. In our research, it is shown that the use of this application rate had no significant negative impact on the studied parameters of soil. It is shown that the biochemical composition of fruits is largely determined by weather conditions of the year of vegetation and foliar nutrition. Maximum efficiency of measures for mineral supply optimizing is achieved only with the good combination of fertigation and foliar nutrition
The extensive path for development in the country in the
twentieth century caused low competitiveness of
Russian pig production. The productivity of domestic
pig production was significantly lower than in Europe,
US, Canada and China. Feed costs per 1 kg of gain were
2-3 times higher with a low yield of piglets from a sow
per year: 14-16 with an average European 25-27 heads.
The country did not have enough meat; as a result, a
significant amount of meat products was imported to
Russia. Restrictions on imports in connection to the
imposition of embargoes contributed to the increase in
demand for domestic products and opened new
opportunities for Russian producers. One way to
increase the production of pork is to use pigs with a high
genetic potential for productivity, imported for breeding
from Canada and Europe. Based on the conducted
studies, it has been established that pigs of foreign
breeding have high reproductive qualities, which proves
the expediency of their application in commercial pig
production to increase the efficiency of the industry
development and reduce the import of pedigree
youngsters from abroad. The implementation of two
breed gilts will help increase productivity in the
industrial pig production
The article reviews the results of studying the influence
of mineral fertilizers on the qualitative indices of the
Merlot grape variety in the Anapo-Taman zone of the
Krasnodar region. The technology of cultivation of
grapes on the experimental plot was in accordance with
the accepted for the given zone and culture.
Agrobiological work was carried out at the optimal
time and had a high quality of execution. Grape bushes
are laid in a 3.0 x 2.0 m pattern. Formation - a twoshoulder
horizontal cordon. On the bushes we formed
the same load of shoots and bunches. Scheme of the
experiment: option 1 – no fertilizers (control); option
2-superphosphate with a mixture of potassium salt
(P90K90) from the autumn; option 3 –nitroammofoska
(N120P120K120) from autumn; option 4 – ammonium
nitrate (N60) in early spring. Analysis of the results of
studies on the study of biological features of growth,
fruiting, yield and quality of Merlot grape varieties on the background of the use of mineral fertilizers shows
their high efficiency in the conditions of the AnapoTamanskaya
zone of the Krasnodar region and can be
recommended for use in production conditions.
Mineral fertilizers ensures the receipt of dry bulk wine
of superior quality control sample (without fertilizers)
the concentration of tartaric acid 17.3 25.1 percent,
phenolic compounds 17.1 – 40.0 %, and alcohol
content of 7.2 and 9.3 %, titratable acids 11.8 and 13.7
%, given extract by 17.4 %, with a decrease of the
mass concentration of total sulfur dioxide and pH. The
most effective is the introduction of NPK
(N120P120K120)