Improved Water and Nutrient Management Through High-Frequency Irrigation, Volume 3: Determining the Transportation Rate of Peach Trees Under Two Trickle Irrigation Regimes

摘要

Research was carried out to quantitatively determine the transpiration rate of two trickle irrigation treatments in a northcentral Texas peach orchard. A soil water balance method was used to determine evapotranspiration (ET). One treatment (II) irrigated at a calculated rate through two emitters; the other treatment (I) received half the calculated rate, distributed through one emitter. Treatment II may have had a more extensive root distribution than I, as indicated by observed moisture extraction patterns. The tree in each treatment could obtain moisture stored in the root zone. Both treatments had an ET rate considerably greater than their irrigation rates.