El-Sayed G Khater
The main aim of this work is to optimize the environmental condition for best grafting by control the temperature and light of grafting conditions. To achieve that was study the effect of ambient temperatures (20, 23, 26 and 29°C), light intensity (0, 2500 and 5400 Lux) and type of tunnel (truss and flat) on stem diameter, shoot length, leaf area, shoot dry mass, grafted-take and energy consumption. The obtained results indicated that the average temperature was 20.45, 23.61, 27.01 and 29.71°C at 20, 23, 26 and 29°C ambient temperatures in truss tunnel, while, it was 20.61, 24.21, 27.53 and 30.09°C at 20, 23, 26 and 29°C ambient temperatures in flat tunnel. The stem diameter values were 4.626 and 4.476 mm in truss and flat tunnel under study with ambient temperature 20 to 29°C and light intensity 0 to 5400 Lux. The shoot length values were 8.254 and 8.131 cm in truss and flat tunnel under study with ambient temperature 20 to 29°C and light intensity 0 to 5400 Lux. The leaf area values were 56.074 and 53.214 cm2 in truss and flat tunnel under study with ambient temperature 20 to 29°C and light intensity 0 to 5400 Lux. The shoot dry mass values were 396.448 and 386.585 mg in truss and flat tunnel under study with ambient temperature 20 to 29°C and light intensity 0 to 5400 Lux. The grafted-take values were 84.525 and 78.460% in truss and flat tunnel under study with ambient temperature 20 to 29°C and light intensity 0 to 5400 Lux. The energy consumed decreased with increasing ambient temperature and decreasing light intensity.
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