|Author:||Ovcharova, A. ; Nedkov, N.|
|Book Group Author:||NA|
Field studies were conducted in Kazanlak, Bulgaria, from 1989 to 1990, to evaluate the different irrigation treatments on canopy temperature of peppermint (Menta piperita [Mentah piperita]) cv. Sofia and to investigate the relationship between canopy air temperature differences versus vapour pressure deficit for irrigation scheduling. The treatments comprised: drip-surface irrigation at 100% of field capacity; drip-surface irrigation at 70% of field capacity; and a non-irrigated treatment as the control. The measurements of the peppermint canopy were made by an infrared hand-held remote thermometer. The non-water stressed baseline of peppermint derived from canopy-air temperature differences versus the air vapour pressure deficit (VPD) were determined. The lower baseline of peppermint with an intercept +1.32 and a slope of -1.96 showed that on this line, crop water stress index was 0. The upper limit line with stress index 1 at which peppermint did not transpire was at 3.8°C when VPD was close to zero. The irrigation water use and coefficient of water use efficiencies for irrigated and non-irrigated treatments were also calculated.
|Pages:||415 - 422|
|Journal:||Bulgarian Journal of Agricultural Science|
air temperature, crop yield, environmental factors,irrigation, irrigation scheduling, plant water relations, vapourpressure, water stress, water use efficiency, Bulgaria, Mentha piperita,Mentha, Lamiaceae, Lamiales, dicotyledons, angiosperms, Spermatophyta,plants, eukaryotes, Balkans, Southern Europe, Europe, DevelopedCountries, vapor pressure, watering, Horticultural Crops (FF003) (NewMarch 2000), Plant Water Relations (FF062), Plant Production (FF100),Soil Water Management (Irrigation and Drainage) (JJ800) (Revised June2002) [formerly Soil Water Management], Meteorology and Climate (PP500)