|Author:||Ngouajio, M. ; Wang, G. Y. ; Goldy, R. G.|
|Book Group Author:||NA|
Field studies were conducted in 2003 and 2004 to determine effects of withholding irrigation on pepper (Capsicum annuum) plant height, leaf chlorophyll content, yield, and irrigation water use efficiency. Irrigation treatments were initiated at pepper transplanting (S0), after transplant establishment (S1), at first flower (S2), at first fruit (S3), or at fruit ripening (S4). The control treatment received only enough water to apply fertigation (FT). Withholding irrigation did not affect pepper plant height except FT treatment, but increased leaf chlorophyll content. Withholding irrigation until S4 saved 50% and 41% of irrigation water in 2003 and 2004, respectively, without affecting fruit yield compared with the treatment where irrigation started at transplanting. However, yield in the FT treatment was significantly reduced. Irrigation water use efficiency (pepper yield per unit area per millimeter of water applied) was maximum at S4 (59.1 kg.ha-1 per millimeter) and S3 (24.1 kg.ha-1 per millimeter) in 2003 and 2004, respectively. Similar trends in response of pepper to the irrigation treatments were observed in 2003 and 2004 even though there were large differences in rainfall, and pepper yield between years. This suggests that withholding irrigation until first fruit may help to maintain pepper yield while reducing irrigation costs. However, it is important to have adequate soil moisture at transplanting to insure adequate transplant establishment.
|Pages:||397 - 402|
chillies, chlorophyll, crop yield, leaves, mulching, plantheight, plant water relations, trickle irrigation, water use efficiency,Michigan, USA, Capsicum annuum, Capsicum, Solanaceae, Solanales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, East NorthCentral States of USA, North Central States of USA, USA, North America,America, Developed Countries, OECD Countries, Lake States of USA, UnitedStates of America, Horticultural Crops (FF003) (New March 2000), PlantWater Relations (FF062), Plant Production (FF100), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Soil Management (JJ900)