EFFECT OF TYPE OF PLASTIC GREENHOUSE AND TRAINING SYSTEM ON SOME FRUIT COMPOSITION OF THREE SEEDLESS GRAPES

K. Treetaruyanont, T. Seangpeng, T. Kajangwoothi
A study on the effects of different types of plastic green house and training systems on three seedless grape cultivars (‘Marroo Seedless’, ‘Perlette’ and ‘Emerald Seedless’) was conducted in 2008-2009. The ‘Marroo Seedless’ grape with the VSP (vertical shoot positioned trellis) training system was cultivated in the open plastic green house (average temperature was 29.83○C and average humidity was 74.33%). This cultivar displayed the greatest significant difference of stem diameters, arm diameters and cane diameters, berry weight (3.47 g) and berry size (width 1.69 cm), length (1.98 cm) and average (1.84 cm). The same cultivar with the SH (Scott Henry) training system, which was cultivated in the evaporative plastic green house (average temperature was 29.39○C and average humidity was 78.57%), displayed the greatest TA (0.90%). The ‘Emerald Seedless’ grape displayed the greatest TSS (total soluble solids, 22.40○Brix) and TSS/TA (total acidity as tartaric acid) ratio (27:57). The open plastic green house showed greater growth and fruit production than the evaporative plastic green house. It is because the higher humidity in the plastic green house caused greater fungal disease than the open nursery.
Treetaruyanont, K., Seangpeng, T. and Kajangwoothi, T. (2014). EFFECT OF TYPE OF PLASTIC GREENHOUSE AND TRAINING SYSTEM ON SOME FRUIT COMPOSITION OF THREE SEEDLESS GRAPES. Acta Hortic. 1024, 247-252
DOI: 10.17660/ActaHortic.2014.1024.32
https://doi.org/10.17660/ActaHortic.2014.1024.32
Scott Henry, evaporative plastic green house, training system, TSS/TA
English

Acta Horticulturae