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Ian Smith HortiCulture
WATER REQUIREMENTS TRIALS
Evaluation of the performance of landscape ornamental plants in response to reduced irrigation - Greenhouse Trial

Experimental groups were established in a heated greenhouse at Silvan, Victoria, Australia, consisting of four 3.6 sq meter troughs providing four irrigation treatments. Ten plants of 6 cultivars were planted into 125mm pots in each irrigation treatment.
Each trough was flood irrigated with the same volume at each irrigation, the frequency of irrigation was used to provide a range of treatments designed to stress the plants and so determine the cultivars response to reducing water availability.
Experimental plots were established at Silvan, Victoria, Australia, consisting of five 100 m2 blocks allowing four irrigation treatments replicated five times. Single plants of each of 37 species were planted into 20 m2 experimental units within the drip-irrigated blocks.
 
Irrigation treatments were initiated in November 2005 and consisted of 1.0, 0.75, 0.50, 0.25 evapotranspiration.
Irrigation scheduling was determined by a Weathertrak Pro controller utilising evapotranspiration generated from Bureau of Meteorology weather data calculated by the Penmen-Monteith formula and forwarded daily to the controller through a GPRS modem connection.
Evaluation of the performance of landscape ornamental plants in response to reduced irrigation - Field Trial
PLANT EVALUATION AND SELECTIONTRIALS

Plants are grown in extensive field and pot trial, data is collected and evaluated providing information for cultural and marketing information. The basic Product Development Cycle is represented in the adjacent diagram.