|Author:||Al-Harbi, A. R. ; Al-Omran, A. M. ; El-Adgham, F. I.|
|Book Group Author:||NA|
The growth, rooting, yield and water use efficiency of okra (Abelmoschus esculentus) cv. Climson Spineless were evaluated during the 2005-06 in a field trial in Riyadh, Saudi Arabia, where four irrigation rates at 60 (T1), 80 (T2), 100 (T3) and 120% (T4) of the estimated evapotranspiration and four drip irrigation emitters depth: surface, 0.0 m depth (D0), sub-surface at 0.15 m depth (D1), 0.25 m depth (D2), and at 0.35 m depth (D3), were imposed following a split-plot in a randomized complete block experimental design with three replications in 2005 and 2006 seasons. Vegetative growth characters (plant height, number of leaves, and shoot fresh and dry weight), rooting (weight, length, width, and root:shoot ratio), and early and total yields were measured. Marketable total yield (MTY) increased significantly with the increase in irrigation level in both seasons. MTY for T3 treatments was 14.32 t ha-1 in 2005 and 10.29 t ha-1 in 2006 and for D1 treatments the respective values were 10.8 t ha-1 in 2005 and 9.75 t ha-1 in 2006 season. Crop water use efficiency ranged from 1.45-2.93 kg m-3 and 1.29-2.43 kg m-3 in 2005 and 2006, respectively. MTY increased significantly as emitter depth increased from surface to 0.35 m in both seasons. Crop water production function (CWPF) was derived based on the results. Results indicate the benefit of irrigation in increasing yield. The CWPF was represented by quadratic polynomial equations.
|Pages:||2764 - 2769|
|Journal:||Journal of Applied Sciences|
application rates, crop yield, emitters, evapotranspiration,growth, irrigation, irrigation equipment, leaves, okras, plant height,plant water relations, root shoot ratio, rooting, water use efficiency,yield components, Saudi Arabia, Abelmoschus esculentus, Abelmoschus,Malvaceae, Malvales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, West Asia, Asia, Middle East, Developing Countries,watering, Horticultural Crops (FF003) (New March 2000), Plant Physiologyand Biochemistry (FF060), Plant Water Relations (FF062), PlantProduction (FF100), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management],Agricultural and Forestry Equipment (General) (NN400)