The article presents the results of studies of the influence of fertilizers on plants height and accumulation of the biomass of alfalfa
In the present article, we have described data of comparative ampelography of biometric evaluation of leaf parameters of the three table grapes: Preobragenie, Victor and Jubiley Novocherkassk, widespread in the amateur and farming areas of Russia and the Ukraine. Showed results of molecular genetic analysis of DNA from these table grapes
The results of study of groups and forms of iron compounds in leached chernozemic soils of Western Ciscaucasia for three crop rotations according to scheme grain-grass-hoeing are presented. With long-term use of leached black soil in terms of Agrigento there is a substantial change in the contents of the various groups and iron compounds. On the non-fertilized variant of rotation, the total content of this element in the 0-20 cm 21-40 cm soil layer by 69.4 and 66.5% of silicate and by 30.6% and 33.5% free group of compounds of iron. The applied system of fertilizer crop rotation helps reduce the silicate and increase of free group its compounds. In leached black soil a group of desilicated iron in the 0-20 cm layer 24.8 % presents crystallizability and to 75.2% amorphous compounds, 21-40 cm layer, respectively, 26.2 and 73,8 %. Under the influence of fertilizers we have noticed increasing of amorphous and reducing the number of cristallizing forms of the compounds of this element the soil. The number of different groups and forms of iron compounds in leached black soil with systematic use of fertilizers in crop rotation is determined not by the size of introducing this element as impurities, and processes such as the alienation of iron with additional derived products, increase its mobility in the soil due to a shift in the reaction of the soil solution, changes in fractional-group composition of humus. Diagnostic criteria state of iron in the soil are leached quantitative ratio of the content of the various groups and forms of the compounds of this element
The stage of introduction of plantlets to in vitro
culture is an important stage of technology of
clonal micropropagation of plants. For the
purpose of decrease in a share of the plantlets that
were lost from an infection and increase of their
regeneration ability, sterilizers and antibiotics,
effective and safe for apple rootstocks’ plantlets
wee allocated, and also favorable terms of
introduction to in vitro culture were allocated. As
a result of the conducted researches, we have
established that on influence on an nutrient
medium and plantlets infection and on growth and
development of plants, beneficial effect on apple
rootstocks’ plantlets has an antibiotic nystatin of
200 mg/l: the reproduction coefficient on the
medium with this antibiotic is equal 4,3, in the
same concentration nystatin has the sanifying
effect of 60-75% for stocks of SK 2 and MM 106.
During researches of sterilizers for apple
rootstocks’ plantlets SK 2, SK 3, SK 4, SK 7,
MM 106 as an alternative to widely applied
highly toxic sterilizer corrosive sublimate (the
first class of danger) were picked up effective and
safe preparations for sanitation of plantlets from
an infection, such as the household preparation
"Whiteness" (sodium hypochlorite) in cultivation
1:2, low-dangerous substance of the fourth class
of danger (a share of viable plantlets of 75,5%
from initially introduced), and also fosfopag, a
preparation of the fourth class of danger (a share
of viable plantlets of 65% from initially
introduced). The favorable term for a meristem of
apple rootstocks’ plantlets’ introduction to in vitro
culture are phases of buds’ burgeoning (March)
and the intensive growth of shoots (May – June)
The results of development of rice breeding lines, carrying the wide range resistance gene to rice blast disease - Pi-40. For identification of the dominant allele of the gene the DNA - marker analysis was used. With co-dominant DNA markers plants from inbred populations that carry a dominant allele of this gene in the homozygous state were selected
According to the results of long-term evaluation of promising hybrids of lavender angustifolia the ability to predict the influence of abiotic factors on the yield and gathering of essential oil of inflorescences is shown. Correlations, agronomic stability and variability of the yield of hybrids are defined
In the article, the information of the influence of humival feed additive on hematologic parameters, development of a multichamber stomach, live weight, meat productivity, economical efficiency are resulted for growing of young sheep up to seven-month age
The article investigates the impact of waste of elevators on morphological parameters and productivity of winter wheat grown on black leached soil
The article deals with the problem of overgrowing of ponds and reservoirs. One way to reduce the intensity of development of plants is covering the territory with geosynthetic materials. Laboratory researches of geosynthetic materials are carried out. The optimum size of the layer of soil, which is loading geotextiles, was determined
The article presents the effect of boron fertilizer on growth, development and productivity of rice plants, the optimal dose and timing of application of boron fertilizers, providing maximum increase grain yield, calculated the economic loss of nitrogen, phosphorus and potassium and crop coefficients of their use of
fertilizer plants; we have also established the influence boron fertilizer on grain quality of rice