Use of a crop water stress index for scheduling the irrigation of sunflower (Helianthus annuus L.)
Küçük Resim Yok
Tarih
2006
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Turkiye Klinikleri Journal of Medical Sciences
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study was designed to evaluate different threshold crop water stress index (CWSI) values to schedule irrigation for sunflower (Helianthus annuus L.) grown under furrow irrigation. Irrigations were started when CWSI values reached 0.2, 0.4, 0.6, 0.8 and 1.0 (non-irrigation). The CWSI values were computed from measurements of canopy temperature, air temperature and atmospheric vapor pressure deficit. Total irrigation water amounts of 679, 584, 470 and 227 mm were applied to the T0.2, T0.4, T0.6 and T0.8 treatments, respectively. The maximum seasonal evapotranspiration (ET), 809 mm was measured from the T0.2 treatment. Irrigation levels significantly affected seed yield. Although the highest seed yield (4.38 t ha-1) was obtained from the T0.2 treatment, the T0.4 nd T0.6 treatments were not significantly different from the T0.2 treatment. Therefore, based on these results, a CWSI value of 0.6 can be used for the irrigation time of sunflower under Tekirda? conditions. © Tübi?tak.
Açıklama
Anahtar Kelimeler
Crop Water Stress Index (Cwsi); Evapotranspiration; Furrow Irrigation; Infrared Thermometer, Atmospheric Pressure; Atmospheric Temperature; Crops; Evapotranspiration; Plants (Botany); Seed; Stresses; Temperature Measurement; Thermometers; Water; Canopy Temperature; Crop Water Stress Index (Cwsi); Furrow Irrigation; Infrared Thermometer; Seed Yield; Irrigation; Crop Plant; Evapotranspiration; Index Method; Irrigation; Water Stress; Eurasia; Tekirdag; Turkey; Helianthus; Helianthus Annuus
Kaynak
Turkish Journal of Agriculture and Forestry
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
30
Sayı
1
