|Author:||Tayel, M. Y.|
|Book Group Author:||NA|
Two field experiments were conducted to study the effect of hydrogels application and trickle irrigation frequency on the yield of okra and squash grown in El-Arish and Rafah (Egypt) and on their water use efficiency. In the first experiment, squash was used as an indicator plant. Soil in plant pits was treated with hydrogels at the rates of 0 and 57 kg superhydro/ha or with 2.4 rolls of DWAL/ha (1 roll contains 14.67 kg of the polymer). In the second experiment, both squash and okra were used as indicator plants, which were seeded after treating plant pits with gels at the following rates: 0, 57 kg superhydro/ha, 2.4, 4.7 and 7.1 rolls DWAL/ha. In both experiments, plants were irrigated for 1 h (1 h irrigation=47.12 m3/ha) at 1, 2, 3 and 6 times per week. The hydrogels increased the yield, water use efficiency and saved irrigation water. The highest yield of okra and squash was obtained with 57 kg superhydro/ha and 7.1 rolls DWAL/ha, respectively in Rafah. Also, the squash yield of the 57 kg of superhydro/ha exceeded that of 2.4 rolls DWAL/ha in the two locations. In Rafah location, okra yield and its water use efficiency decreased with increasing DWAL from 2.4-7.1 rolls/ha. An opposite trend was noticed in the case of squash. From water economy point of view, El-Arish is preferred for squash than Rafah, and squash is preferred than okra at Rafah.
|Pages:||143 - 152|
|Journal:||Egyptian Journal of Soil Science|
crop yield, irrigation, irrigation scheduling, irrigationwater, okras, plant water relations, polymers, squashes, trickleirrigation, water use, water use efficiency, Egypt, Abelmoschusesculentus, Cucurbita, Abelmoschus, Malvaceae, Malvales, dicotyledons,angiosperms, Spermatophyta, plants, eukaryotes, Cucurbitaceae, Violales,North Africa, Africa, Mediterranean Region, Middle East, DevelopingCountries, hydrogel, watering, Horticultural Crops (FF003) (New March2000), Plant Water Relations (FF062), Plant Production (FF100),Fertilizers and other Amendments (JJ700), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management]