|Author:||Al-Gharibi, E. R. ; Abu-Awwad, A. M.|
|Book Group Author:||NA|
An experiment was conducted in Amman, Jordan, during the 2001 growing season to study the effects of irrigation quantities, planting density and their interaction on hot pepper (cv. Anaheim Chili) yield and to determine the actual evapotranspiration (ETc) that will provide the highest yield per unit volume of water per unit area for a specified planting density. The treatment comprised: in-row plant spacing at 30 (S1), 60 (S2) and 90 (S3) cm, respectively, and irrigation quantity levels at 2/6 (W1), 3/6 (W2), 4/6 (W3), 5/6 (W4) and 6/6 (W5) evaporation depth from a class A pan. The applied irrigation water was adjusted according to the crop growth stage (1/3 of the desired amount was applied at the seedling stage, 2/3 at the development stage and 3/3 at the last (maturity and ripening) stage). In general, an increase in applied irrigation water and/or plant population increased the actual consumptive water use. Seasonal actual consumptive use varied from 397, 376 and 370 mm at W1 to 1153, 1116 and 1095 mm at W5 irrigation treatments, for S1, S2 and S3 treatments, respectively. Pepper yield increased with the increasing amount of irrigation water applied for all spacing treatments from W1 to W5, respectively. Yields also increased with increasing plant populations (reducing plant spacing). Water use efficiency (WUE) was reduced as the applied irrigation water was increased because yield was increasing at decreasing increments compared to the amount of irrigation water applied. Increasing in-row plant spacing from S1 to S3 significantly reduced WUE. The highest yield and WUE was obtained with 30 cm in-row plant spacing accompanied with W3.
|Pages:||27 - 37|
|Journal:||Dirasat. Agricultural Sciences|
chillies, crop density, crop growth stage, crop yield,evapotranspiration, maturity stage, plant development, plant waterrelations, ripening stage, row spacing, seedling stage, spacing, trickleirrigation, water use efficiency, Jordan, Capsicum, Capsicum frutescens,Solanaceae, Solanales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, Capsicum, West Asia, Asia, Middle East, DevelopingCountries, Plant Production (FF100), Soil Water Management (Irrigationand Drainage) (JJ800) (Revised June 2002) [formerly Soil WaterManagement], Horticultural Crops (FF003) (New March 2000), Plant WaterRelations (FF062)