|Author:||Kirda, C. ; Topcu, S. ; Cetin, M. ; Dasgan, H. Y. ; Kaman, H. ; Topaloglu, F. ; Derici, M. R. ; Ekici, B.|
|Book Group Author:||NA|
Field experiments were conducted for 3 years from 2000 to 2002 to assess proportional crop yield differences obtained under conventional deficit irrigation (CDI) and partial root zone irrigation (PRI) practices, compared with full irrigation (FULL) where plant water requirements were fully met. The experimental crops included vegetables (tomato and pepper), field crops (maize and cotton) and citrus. The fruit yield of greenhouse-grown tomato with FULL irrigation was higher than with PRI (7-22% lower) but was not significantly different. The PRI treatments had 7-10% additional tomato yield over CDI receiving the same amount of water. The yield of pepper, however, decreased in proportion to the level of irrigation deficit with no increase of irrigation water use efficiency (IWUE). No seed yield decrease was evident for cotton with the deficit treatments (PRI and CDI) compared with FULL irrigation. Similarly, the PRI treatment did not give any yield benefit for maize compared with CDI. The ranking of fruit yields of mandarin, FULL > PRI > CDI, was the same as that of other crops; however, the differences were not significant. Although the deficit treatments (PRI and CDI) had as high as 39% increase in IWUE, compared with FULL treatment, some adverse effects on fruit quality were evident such as smaller size of fruits under the deficit treatments.
|Pages:||281 - 291|
|Journal:||Annals of Applied Biology|
cotton, crop yield, irrigation, maize, plant waterrelations, roots, tomatoes, water use efficiency, Mediterranean Region,Capsicum annuum, Gossypium, Gossypium hirsutum, Lycopersicon esculentum,Zea mays, Capsicum, Solanaceae, Solanales, dicotyledons, angiosperms,Spermatophyta, plants, eukaryotes, Gossypium, Malvaceae, Malvales,Lycopersicon, Zea, Poaceae, Cyperales, monocotyledons, corn,Mediterranean countries, watering, Horticultural Crops (FF003) (NewMarch 2000), Field Crops (FF005) (New March 2000), Plant Physiology andBiochemistry (FF060), Plant Water Relations (FF062), Plant Production(FF100), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]