Effect of polyethylene plastic mulch on yield and fruit quality parameters of tomato

The greenhouse experiment was conducted to evaluate the effect of black polyethylene (PE) plastic mulch on yield and some quality parameters tomato. In study, PE material laid raised beds bare soil (not mulched) used as control. Mulch did not affect plant height, fruit shape index, chroma hue angle, firmness, soluble solids content, titratable acidity. Black had a positive influence yield. Significantly higher stem diameter were obtained from application (17.23 mm 18.78 kg da-1, respectively) compared control (15.30 16.75 respectively). On other hand, vitamin C in (41.13 mg 100 g-1) than