The article shows the results of two years of research of the impact of various technologies of cultivation of winter wheat with alfalfa predecessor
In this article, we review the influence of different production technologies for nitrogen, phosphorus and potassium in the soil under alfalfa, and the impact of culture on the accumulation of nitrogen in the soil
The article presents the studies that were conducted in 2011-2014 agricultural years in the experimental rotation hospital departments of Agriculture and Agricultural Chemistry, located in the Experimental Station of Stavropol State Agrarian University. The hospital is part of a geographical network experiments with fertilizers and registered in the register of long experience certificates of GeoNetwork VNIIA of the Russian Federation. We have presented an influence of systems of fertilizers and tillage practices on yield, indicators of the structure and quality characteristics of winter wheat of Zustrich varieties grown after pea predecessor in a stationary experience of Stavropol GAU. The influence of fertilization systems built on different principles on the productivity of winter wheat after pea predecessor in the area of unstable moistening was studied. The article has practical significance, since on the basis of the research we have found experimental evidences to recommend a cash-balance method for determining fertilization rates for the construction of the settlement system of fertilizers, to assure maximum efficiency and provide a level of skill programming yield 90-100%. We have also offered low-cost bio- fertilizers in crop rotation system, based on the efficient use of organic fertilizers, local application of minimal doses of mineral fertilizers
This article describes the results of programming of a yield of winter wheat grain on quality and productivity of winter wheat in the conditions of teaching and experimental farm of Stavropol upland. There were given the weather conditions during the research, their influence on the formation of the structure yield and quality of winter wheat. We have presented an analysis and a comparative evaluation of the structure of the winter wheat crop, including a variety of quantitative traits: the length of the stem and ear, number of grains per ear, mass of one ear, weight of 1000 grains, tillering and overall productivity yields. This scientific article describes the technical requirements to the content: protein, gluten, vitreous, the DCO, the class of grain. In general, the results of 4-year data on leached black soils of Stavropol Upland were the largest and the best indicators on the structure of winter wheat yield and grain quality, as they were obtained with the introduction of the planned dose N126R80K72 harvest of 6.0 t/ha according to the method of calculation by V.V. Ageev, planned yield levels 5.0 and 6.0 t / ha have been achieved, the accuracy of programming (99%) was obtained by calculating the doses of fertilizers by the method of V. V. Ageev
The article presents the results of the qualitative
assessment of meat of crossbred rams. The analysis of
the data shows that crossbred rams of 2, 3 and 4
groups increased the absolute mass of muscle tissue
compared with purebred 12.3; of 18.2 and 25.6%,
respectively. Fine-wooled rams were superior in the
relative content of bone in carcasses of crossbred 1.1-
4.2 percent. Output of pulp for 1 kg of bones had the
advantage of crossbred rams 2, 3 and 4 groups
compared with purebred 0.12; 0.24 percent and 0.44
kg respectively. The analysis of the data shows that in
carcasses of young animals of all the groups the
greatest specific weight took cuts of the 1st sort.
Nevertheless, the valuable parts to carcass weight
balance was higher in the carcasses of the crossbred
calves. So, rams 2, 3 and 4 groups, this advantage was
1.9; 4.5 and 4.7%, respectively. Thus, the analysis of a
complex of indicators characterizing the quality of
meat rams of different genotypes revealed that the
superiority for the studied indices took place for two -
and three-bred animals. These options of both simple
and complex industrial crossing are promising and can
be implemented and used in the farms of Merino and
crossbred sheep
This article presents the experimental material obtained
from long-term stationary experiment of GNU
"Severokubanskaya agricultural experimental station"
in P.P. Lukyanenko Krasnodar Agricultural Research
Institute. Stationary experience was founded in 1978. It
had two ten-course crop rotations and combined graingrass
tilled. The ordinary black soil, low-humic, heavy
loamy in mechanical composition. The capacity of humus
horizon is 113-116 cm with a total content of humus
on the date of the experience beginning is 3.88%.
Arable (0-30cm) layer was characterized by the following
parameters: total nitrogen content - 0.22-0.24, mineral
-10,0-10,5mg / kg of soil, total phosphorus-0,16-
0,19%, labile phosphorus - 12,2-12,9mg / kg soil total
potassium -1,7-2,0%, exchange potassium- 386mg / kg
soil. The degree of saturation of bases is 80-90%. The
amount of absorbed bases is 30-40 m ekvg/ 100 g of
soil. The reaction of the soil solution is weakly alkaline
(PH water 8.0-8.2). The predecessor is winter wheat.
General Agrotechnics is recommended for a given soil
and climate of region. Solid mineral fertilizer were applied
as mineral fertilizers in combination with organic
fertilizer in the form of half-decomposed cattle manure. According to agro-climatic zonation the northern zone
of the Krasnodar region, where the research was conducted,
is related to the zone of insufficient watering
with hydrothermal coefficient 0.7-0.9 with an annual
rainfall of 350.5 to 899.8 mm. During the autumn and
winter period, which determines the accumulation of
water in the soil, from 150.3 to 426.8 mm of rain falls
or 30,4-68,9% of the annual amount. During the vegetation
of sugar beet from germination to harvest -112,0-
588,9mm of rain falls, with an average daily temperature
of the air 16,5-20,000С, including the period of the
greatest growth of roots and accumulation of sugar
from 3.2 to 557.1 of rain falls with air temperature
19,5-28,800С. Hydrothermal index is 0,01-2,83. During
the years of the research 19% of years have been characterized
as unfavorable (hydrothermal index 0.67),
44% of years as moderate on moisture supply and temperature
conditions (hydrothermal index 0.99) and 37%
of years as favorable (hydrothermal index 1.05). The
generalization of the research results obtained by us in
the long-term stationary experiment, allowed us to estimate
the impact of different standards and systems of
fertilizer on the productivity of sugar beet and sugar
content in the roots. On average, during the years of
research, the root harvest under the influence of fertilizer
amounted to 36,7-45,6 t / ha per unit area with the
addition to the control variant, that isn’t manurable,
amounted from 6.6 to 15.5 t / ha. The highest yield of
root is 43,0-45,6 t / ha which was obtained with systems
of fertilizer with complete mineral nutrition
The article presents the results of the effects of treatments of the plants of winter wheat with biological stimulants and drugs and microfertilizers. The most effective treatment and most responsive varieties of soft wheat have been found. We also present the indicators of the quality of the grain of soft wheat after treatment with drugs and stimulants
The effects of tillage, minimum and combined treatment on the structure of the southern black soil and crop yield of such winter wheat as Tanais, and Petrovchanka Ayvina have been studied. It is revealed, that the most stalwart and giving more than the number of productive stalks is a sort of Petrovchanka. The highest yield of winter wheat was obtained with plowing, and the lowest - with combined processing unit. The most productive variety was Petrovchanka.s
The results of the study of physiological and biochemical parameters of plum plants, changing when infecting plants Plum pox potyvirus (PPV) are shown. It was found that the infected leaves at the stage of full development of the content chlorophyll a reduced by 30 % in variety Stanley and by 6 % in Kabardinskaya rannaya, chlorophyll b in less than 49 % at Stanley, 37% in Kabardinskaya rannaya, carotenoids are less than 22 % in the variety Stanley and by 11% in the variety Kabardinskaya rannaya . Leaves infected with the virus pox (PPV), in comparison with not infected, the amount of protein were decreasing: in the variety Stanley by 21 %, in the variety Kabardinskaya rannaya by 28 %. In the period of active growth of the leaves change in the content of pigments and protein is more intense. The content of lignin in the tissues of leaves, infected with the virus pox (PPV), in comparison with not infected in the variety Stanley was below on 13 % and in the variety Kabardinskaya rannaya - 8 %. The total content of water of infected tissue on the stage of a full-time development is reduced in patients leaves as compared with not infected 11 % in the variety Stanley and by 1 % in the variety of Kabardinskaya rannaya. Throughout the period of development of foliage studied parameters vary depending on the variety
In the arid zone of chestnut soils in Stavropol territory, sunflower was cultivated, using different types of primary treatment: plowing, scuffling and moldboardless processing in the depth of 10-12 and 20-22 cm. It was found out, that different treatment methods do not affect the content of nutrients. The density and porosity of the soil was relatively favorable, as in the treated and untreated soils