The article contains dynamics of selective and continuous cutting in oak forest of Russian European part at the last 50 years and analyzes their pathological effectiveness
In the article there were given the results of researches
for 20110–2012 obtained of many years stationary
experience of the chair of general and irrigated land
management of Kuban State Agrarian University on
study of main soil treatment influence and doses of
mineral fertilizers under soy beans on dynamics of
moisture in soil and efficiency of its use by this cultivar.
There was determined that from all studied variants
the ploughing on 20–22 cm led to the higher accumulation
of moisture for autumn-winter period. The
decrease of productive moisture reserves on 6-9 % was
observed on the types with surface treatment and direct
sowing. The increase of soil treatment depth and doses
of mineral fertilizers promoted to the better accessibility
of moisture during vegetation period and correspondently
to their greater expenses. Moreover, there
was revealed the more rational use of water by soy
beans under mouldboard soil treatment and introduction
of mineral fertilizers in the dose of N90P120, it discovers
the high effectiveness of present agricultural
methods. The highest productivity of soy beans in the
experience was achieved by means of ploughing on
20–22 cm and introduction of mineral fertilizers as a
main type of soil treatment
Remineralization of leached chernozem was carried
out by applying such rocks as loess-like loam, shell
limestone, apatite phosphogypsum. We have
revealed that the introduction of species didn’t
change substantially the content of boron during the
growing season. We have also displayed the seasonal
dynamics of macro variants of the experiment and
the increase in the content of food items in the phase
of active growth of winter wheat. Seasonal dynamics
of trace elements is expressed, but can not be
expressed with certain regularity
Under conditions of vegetation experiment at soil artificial chloride salinization the dynamics of accumulation and distribution of sodium, potassium and calcium in organs of rice plants (Oryza sativa L.) have been studied, as well as their correlation with tissue hydration in ontogenesis. The significant restriction of salinization ions transport and accumulation, particularly sodium, in the actively functioning upper leaves and panicles has been observed. Whereas the content of calcium and potassium in the experimental and control plants differed slightly
In the article, we have studied the effect of antibiotics on enzyme’s activity of black soil. Introduction of the high doses (600 mg/kg) of antibiotics benzylpenicillin, nystatin) leads to considerable decrease in enzyme’s activity of soils. The class of hydrolyses is most sensi-tive to the action of antibiotics, their activity decreases for 50-70% from control values, the class of oxidore-ductase is least sensitive (10-40%). Antibiotic’s action on enzyme’s pool of soils has the prolonged character
DYNAMICS OF CATALASE ACTIVITY IN THE LEAVES OF APPLE TREES UNDER THE INFLUENCE OF FOLIAR FERTILIZING
The research was conducted studying the effect of
various system of foliar fertigation on catalase activity
in the apple orchard with drip irrigation in 2013-2014.
The object of research were apple trees of
Zhigulevskoye variety grafted on rootstock 62-396 in
experimental intensive apple orchard of I.V. Michurin
FSC which had been planted in 2007. During
vegetation, the following indices were determined in
apple tree leaves in dynamics: catalase activity by
gasometrical method of M.I Lishkevich on the 3rd and
5
th day after treatments, the content of nitrogen
(Kjeldahl method), phosphorus (KFK-3), potassium
and calcium (Jenway PFP-7). Data were statistical
processed according to the generally accepted methods
described by B.A. Dospekhov. It has been established
that foliar fertigation increased catalase activity on the
3
rd day after treatment, which then decreases to normal
values. So, treatments acted as a stress factor.
Correlation of catalase activity with nitrogen content in
the leaves increased, and with calcium content
decreased as the number of megafol mixed with
calcium calbit treatments was enlarged. Using tank
mixtures for multiple treatments with combination of
antistress preparations and calcium-containing
agrochemicals allows to moderate significantly the
stress effect of foliar fertilizing on plants
The article presents three-year data on the influence of different fertilization systems and predecessors (corn for silage and peas) of winter wheat in the rotation on the dynamics of content in the 0-20 cm layer of black leached soil of mineral nitrogen, of available phosphorus, of potassium, and yield of winter wheat. The materials presented in this article indicate that, regardless of its predecessor in all phases of plant development, the under study fertilizer systems significantly increased the content of mineral nitrogen on the indicators of natural agrochemical background on 1,1-29,3 mg/kg; maximum contents was registered in the settlement system of fertilizer. After a seeded fallow predecessor the fertilizer systems significantly increased the content of available phosphorus in the soil at 1,5-16,6 mg/kg and exchangeable potassium in the 6-57 mg/kg. The maximum indices of both indicators were observed in the settlement system of fertilizer. Analyzed fertilizer systems contributed to a significant increase in wheat yield relatively to control 0,82-2,24 t/ha on a busy couple 0,74-1,6 t/ha for maize silage, 1,44-2,42 t/ha peas. Maximum productivity of winter wheat in the experiment was fixed at the fertilizer system after a busy couple, and was 6,19 t/ha
Using two microsatellite loci (HaSSR1, HaSSR3), the PCR analysis of the bollworm Krasnodar population was conducted. Molecular-genetic analysis (SSR-PCR) of different geographic codling moth populations by three microsatellite loci Ср1.63; Ср2.39 и Ср2.157 was conducted also. Based on the assessment of the frequencies of occurrence of DNA markers, the molecular-genetic structure was described and genetic diversity in the pest populations was estimated
The Dimitra variety is a hybrid, which was made as the result of Greek and Russian scientific collaboration in Greece, by Pantiley Zamanidi and Leonid Troshin in 2001 by hybridization of Aigeogritiko variety and Merlot. On its morphological characteristics it is included in the group of the Black sea varieties (convar. pontica subconvar. balcanica Negr.). The production period is 146-155 days. The leave is middle or big, black-green, five lobes, deep dissected. The middle weight of bunch is 300 g, the form is cylinder conical, middle density or friable. The berry is middle, not colored, with low labrusk taste. The yield is high. The sugariness is high. The quantity of seed in the berry is one or two. It has higher frost resistance; drought resistance and higher steadiness to mushroom diseases compare with the parents varieties. The variety is using for making desert dry red wine of outstanding quality
In the conditions of the North Caucasus during aflatoxin B1 tolerant level in the ration it is desirable to breed the broiler chickens cross “Smena-4” and “Ross 308” adding toxi-nyl preparation in the amount of 2 kg/t