Conventional irrigation methods require high amount of water to meet ‘Fuji’/M9 and ‘Fuji’/M26 apple orchards irrigation requirement. In this study, the efficiency of sprinkler, surface drip and subsurface drip irrigation methods on water use efficiency, tree growth, yield, and canopy volume were compared. Experiment I (‘Fuji’/M9 apple orchard) consisted of sprinkler, surface drip and subsurface drip irrigation methods. Subsurface drip irrigation method consumed 37% and 27% less irrigation water to maintain same matric potential compared to sprinkler and surface drip irrigation methods, respectively. In addition, subsurface drip irrigation method showed less sunburn fruits and contained less weed growth compared to sprinkler and surface drip irrigation methods. In experiment II (‘Fuji’/M26 apple orchard), subsurface drip irrigation method at different depths (0, 15 and 30 cm) were compared. The results showed that irrigation at 30 cm depth consumed 52% less water to maintain the same matric potential compared to 0 cm (or surface drip) irrigation. However, apple tree stem circumference, new shoot length and canopy volume were not significantly different between treatments. These results suggest that subsurface drip irrigation can be used as an efficient method to reduce the irrigation water in ‘Fuji’/M9 and 'Fuji'/M26 apple orchards and to reduce weed growth.
Apple tree response to surface and subsurface drip irrigation methods.
Irrigation methods Date of flowering Stem circumference (cm) Shoot length (cm) Canopy volume (m3) Irrigation water (Mg 10a-1) Surface (0 cm) April 19 19.3 a† 44.4 a 17.5 a 288.2±33.8 a Subsurface (15 cm) April 18 21.1 a 41.2 a 17.2 a 167.2±34.8 ab Subsurface (30 cm) April 18 20.3 a 44.8 a 17.6 a 138.4±25.3 b
†Each value represents the mean of three replications ± standard error (SE).
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- Publisher :Korean Society of Soil Science and Fertilizer
- Publisher(Ko) :한국토양비료학회
- Journal Title :Korean Journal of Soil Science and Fertilizer
- Journal Title(Ko) :한국토양비료학회 학회지
- Volume : 51
- No :4
- Pages :608-615
- Received Date :2018. 10. 22
- Accepted Date : 2018. 11. 29