International Conference On Agriculture, Forest, Food Sciences and Technologies, Nevşehir, Türkiye, 15 - 17 Mayıs 2017, ss.143
Sustainability in irrigated fields totally depends on irrigation management. Irrigation scheduling is the
key issue in the effective use of the water resources in the agricultural sector. In present study,
possible use of crop water stress index (CWSI) obtained from measured canopy temperature was
investigated in irrigation scheduling of pumpkin seed plants. Experiments were carried out in
randomized blocks design with 3 replications over the experimental fields of Erciyes University in
2016. Irrigation scheduling was made up by applying different levels of irrigation water depleted in
the 60 cm of effective root zone (I100, I80, I60, I40, I20 and I0). The relationship between plant water
consumption (ETc) and CWSI was identified as ETc=-439.6*CWSI+593.24 with R2
=0.90 while the
relationship between seed yield and CWSI was identified as Yield = -99.04*CWSI+131.73 with
R2
=0.97. It was concluded based on present findings that CWSI could be used in irrigation scheduling
of pumpkin seed plants and irrigations should be performed when the CWSI value is equal to 0.08.