Name
Garkusha Sergey Valentinovich
Scholastic degree
•
Academic rank
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Honorary rank
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Organization, job position
All-Russian Research Institute of Rice
Web site url
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Articles count: 2
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 deals with the effectiveness of mineral and
organic fertilizers in long-term application (for more
than thirty years) according to the influence on the
fertility of ordinary black soil of the Western Ciscaucasia
and productivity of sugar beet. The investigations
were carried out in the long-term stationary experiment
laid on the experimental stationary section "Severokubanskaya
agricultural experimental station" of P.P.
Lukyanenko Krasnodar Agricultural Research Institute.
The experiment was laid simultaneously in time
and space in two ten-course crop rotations and combined
grain-grass tilled. In the structure of sown areas
sugar beet occupied 10% of crop rotation area and was
placed after the winter wheat. During three rotations it
was studied: 1- control without fertilizer with natural
forming level of mineral nutrition; 2- minimal dose
N21P26K16 3- medium dose N43P52K33 ; 4 - N43P52K33,
5- high dose N96P104K68; 6- organo-mineral system¹
N43P52K34 + 12 t/ha of manure; 7- organo-mineral system²
N20P24K34 + II-III rotations tillage of straw crop
+ 6 t/ha of manure; 8- medium dose P52K33; 9- medium
dose N43K33; 10- medium dose N43K52. The soil which
is used by organo-mineral system with increased and
high standards of mineral fertilizers had higher concentration
of mineral nitrogen. Long systematic application of fertilizer had more noticeable effect on soil
phosphorus regime. The provision of soil by exchange
potassium tended to decline from rotation to rotation.
If at the completion of the first rotation the content of
this battery was at the level 362,0-433,0 mg / kg of
soil, in 2010, these values were 356,0-405,0 mg / kg of
soil, remaining at the level of increased and high provision
characterized to ordinary black-soil. Fertilizers
for crop rotation provided almost equal yield increase:
in the first rotation - 4,9-16,0 t / ha in the second 5,3-
17,1, the third 6,1-15,5 t / ha. In the moderate favorable
for moisture and temperature conditions during
the first and third rotation (hydrothermal index 0,8-
0,76), the value of sugar beet yield was 30,1-46,1 and
35,7-52,1 t / ha, in comparison with tougher conditions
for the second rotation (hydrothermal index 0,41-
1,96) higher up to 2,6-6,5 9,2-16,0 t / ha.
Research carried out in long-term stationary experiment
showed that long-term use of fertilizers prevents
to the loss of soil organic substances, supporting the
humus content at the level of 3.95-3.99%, and organicsystems
contribute to its reproduction to 4,01-4,21%.
soil nitrogen state is stabilized. However, there is a
tendency of decrease of the exchange potassium in
mineral fertilizer systems. In the conditions of insufficient
moisture supply of the northern zone of Krasnodar
region the most applicable norm is N60P90R60, both
in mineral and organic-systems, ensuring the collection
of root crops within 43,0-45,2 t / ha, with an estimated
amount of sugar 6,92-7, 14 t / ha. The given systems of
fertilizer provide the yield of root crops 53,3-56,0 t /
ha with the synthesis of sugar 8,19-8,70 t / ha. Increasing
the rate of fertilizer in 2 times from medium to
N120P160R120 doesn’t increase the productivity, reduce
sugar content of root crop to 0.4-0.8%. It is undesirable
to use fertilizer that are unbalanced in nutrition
elements in which root crops yield declines from 5.4 to
19.0%, and current biological sugar from 6,1 to 25,9%