Yield and water use efficiency of drip irrigated cotton (Gossypium hirsutum L.) at different irrigation intervals and watering regimes

Issue Date

6-2009

Abstract

The study observed the effects of different watering regimes on yield and water use efficiency of N-84 cotton (Gossypium hirsutum L.) variety in the Aegean Region of Turkey during 2003 and 2004. Trials comprised two irrigation intervals (4-d and 8-d) within each of which three different watering regimes (100%, 67% and 33% of cumulative Class-A pan evaporation) were applied. The highest irrigation water level was applied to the full irrigation treatment (IR-100) for both irrigation intervals. Seasonal water use values in the treatments varied from 313-650 mm in 2003 and 249-603 mm in 2004. Seed cotton yield was significantly affected by irrigation intervals and irrigation levels. The maximum and minimum seed cotton yields were obtained from the 8-d IR-100 and the 8-d IR-33 treatments and averaged 5508 kg ha -1 and 3419 kg ha -1, respectively. Significant curvilinear relationships between seed cotton yield and crop water use were obtained for 2003 and 2004. Averaged across years, the highest water use efficiency (WUE) (1.21 kg m -3) was obtained in the 8-d IR-33 treatment and the lowest WUE (0.83 kg m -3) in the 4-d IR-100 treatment. The average yield response factor (k y) was 0.59 for the 4-d irrigation interval and 0.67 for the 8-d irrigation interval, respectively. Overall, the results of this research indicated that the 8-d irrigation interval with the IR-100 irrigation treatment could be used for cotton grown in semi-arid regions under no water shortage. Moreover, results obtained from the 8-d, IR-67 treatment could be used as a good basis for reduced drip irrigation strategy development under water shortage because 33% of water saving was obtained with only a 6.0% yield loss averaged across years.

Source or Periodical Title

Philippine Agricultural Scientist, The (Formerly: The Philippine Agriculturist)

ISSN

0031-7454

Volume

92

Issue

2

Page

193-200

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Frequency

quarterly

Physical Description

graphs ; tables ; references

Language

English

Subject

cotton, drip irrigation, yield, water stress, water use efficiency

En – AGROVOC descriptors

GOSSYPIUM HIRSUTUM; GOSSYPIUM; CROP YIELD; TRICKLE IRRIGATION; IRRIGATION SYSTEMS; DROUGHT STRESS; WATER USE

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