Different irrigation methods and water stress effects on potato yield and yield components

Water-yield relationships of potato under different irrigation methods and regimens

“…The tuber number per plant increased from 5.5 to 7.3 in 2003, and from 5.6 to 6.5 in 2005. Similarity, Onder et al (2005) reported that the number of tuber per plant was not significantly affected by irrigation methods. The highest values of tuber weight were recorded for the drip irrigation treatment.…”

“…While no differences were registered in 2003 (P > 0.05) irrigation regimens affected tuber yield (P < 0.05) in 2005, and the highest tuber yield was obtained in the 30% irrigation regimen -35.13 t ha -1 in 2003, and 44.56 t ha -1 in 2005. The highest tuber yield was registered for the drip-irrigated treatment, watered Faberio et al (2001), in Spain, found that 597 mm irrigation water was required to reach maximum tuber yield 45.18 t ha -1 ; Onder et al (2005) determined that surface drip irrigation and subsurface drip irrigation methods did not significantly affect tuber yield under Turkey soil/climate conditions. Other researchers have also reported increased tuber yield with irrigation applications (Shock et al, 1998;Ferreira & Carr, 2002;Kashyap & Panda, 2003;Yuan et al, 2003;Kang et al, 2004).…”

“…ET values for all treatments were close in both years, that of the first year being slightly higher. This may be attributed to differences in climatic conditions, planting date and total growing sea- (Doorenbos & Kassam, 1979;Fabeiro et al, 2001;Panigrahi et al, 2001;Ferreira & Carr, 2002;Shock et al, 2003;Onder et al, 2005).…”

“…Among the irrigation regimens, the highest WUE were generally obtained from application of irrigation when 30% of the available water was consumed. Kang et al (2004) and Onder et al (2005) 3 0 0 2 5 0 0 2 3 0 0 2 5 0 0 2 m g k ---------------------------------------3 -----------------------------------------d …”

“…Potato is one of the main crops in Turkey where the production is about 4.80 million t harvested from 0.2 million ha (FAO, 2004). Early studies have shown that water is the most important limiting factor for potato production and it is possible to increase production levels by well-scheduled irrigation programs throughout the growing season (Boujelben et al, 2001;Deblonde & Ledent, 2001;Faberio et al, 2001;Chowdhury et al, 2001;Panigrahi et al, 2001;Ferreira & Carr, 2002;Kashyap & Panda, 2003;Shock et al, 2003;Yuan et al, 2003;Onder et al, 2005).…”