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Identification
Code |
PP00092 |
Project
title |
Middle-size
fibre cotton crop irrigation regime optimization in - conditions
of Gyssar valley |
Project
location |
The
Republic of Tadjikistan,
Gyssar rayon, TadjNII of Agriculture ÖÝÕ |
Rubric |
70.21.33;
70.03.11; 70.03.15 |
Rubric
(SIC ICWC) |
01.20.05.13;01.20.05.10;01.20.01.10 |
Project
duration |
1960-1966 |
Project
manager |
Satiboldiyev.S..,
TadjNII of Agriculture The Republic of Tadjikistan, Gyssar
rayon, Sharora vil.. |
Summary |
Studies
are dedicated to the establishment of soil optimal design
layer for soil-climatic conditions of Gyssar valley under
cotton crop irrigations and accelerated method of soil humidity
assessment, irrigation regimes scheduling and management,
and irrigatec lands efficiency increase under conditions
of water and other resources scarcity. EPP is located in
Gyssar valley at the altitude 850-900 m. Climate is continental.
Soil - mostly gray desert soil, meadow-gray soil, brown-carbonate
soil. Semi-loam. EPP area - 2.0 ha. Irrigation source -
Big Gyssar canal, water salinity degree is at least 0.7
g/1. Irrigation network - in earthen channel, efficiency
- 0.88-0.92. Plot is equipped by water account means. In
result of studies it is established that under cotton crop
optima irrigation regime design layer value variation leads
to appropriate changes in irrigation regime parameters.
Taking into account that main mass of active roots of cotton
crop (75-85%) is in the layer 0-70 cm, main water discharge
from the soil occurs from mentioned layer. Therefore irrigations
by reducec norms on design layer (0-70 cm) are more effective.
It provides normal water supply of plants under irrigation
water saving dis- charge. Dependence of raw-cotton crop
yield and total cotton crop water requirements. To calculate
total cotton water requirement biophysical and bioclimatic
coefficients were found. Production testing cotton crop
irrigation terms according to soil water avail- ability
in the layer 0-70 cm, defined by accelerated method of Ka-
bayev V.E., showed high effectiveness. |
Key
words |
Water
requirements; agricultural crops; cotton; crop yield capacity;
soil humidity. |
Bibliography |
1.
Authors - Kabayev V.E., Sotilbodiyev S. Title - "Important
approach of raw-cotton crop yields increase and irrigation
water saving" "Cotton crop production", #9,
1967 Cotton crop irrigation effectiveness is given on reduced
design layer under accelerated method of soil humidity assessment.
Recommendations for production are given. |
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