Knowledge Base
 

Identification Code

PP00147

Project title

Studies of opportunity to apply forced cotton irrigation on large areas without slopes in the Republic of Karakalpakstan

Project location

The Republic of Karakalpakstan, Kegeili rayon, "Khalkabad" collective farm.

Rubric

70.21.35; 70.21.31

Rubric (SIC ICWC)

01.30.03

Project duration

1985-1996

Project manager

Kurbanbayev E.., SANIIRI Karakalpak branch The Republic of Karakalpakstan, 742000, Nukus, Dosnazarov str., 12

Summary

Studies are dedicated to water saving issue by means of forced cotton irrigation on large checks without slopes in conditions of plain part of Amudarya lower reaches, significantly reducing irrigation duration, as well as to development of recommendations for production. Climate is continental. Relief is plain. Soils - medium saline. Ground water table is 1.5-3.2 m, salinity degree is high (6-15 g/1). EPP area is 160 ha. On EPP 3 lines of field sprinklers in earthen channel and 4 lines of closed horizontal drainage. Forced cotton irrigation on lands of Karakalpakstan without slopes gave possibility to achieve high irrigation water use efficiency as well as reduce twice cotton irrigation duration under high water discharge in checks. Because of vertical filtration volume reduction immediate water table rising doesn't occur. Uniformity of soil humidity is achieved along length of furrows, irrigation norms and depths, and irrigators labor as well as ground water pollution with applied fertilizers are reduced. Practical recommendations for production are given.

Key words

checks; irrigation technique; zoning; irrigation norm; sprinklers; cotton

Bibliography

1. Author - Kurbanbayev E. Title - "Recommendations on option of irrigation method and technique" 1993. Forced agricultural crops irrigation in conditions of plain part of the Republic of Karakalpakstan.