Effect of Irrigation on Growth and Yeild Qualities of Organic Watermelon Kinaree Varieties in Greenhouse

Abstract

The objective of this research was to study effect of irrigation on growth, yield and yield quality of organic watermelon Kinaree varieties. There were four levels of drip irrigation such as 100%, 80%, 60% and 40% (962.5, 770, 577.5 and 385 ml./plant respectively). This experiment was designed by RCBD with 6 repetitions and 6 plants in each. The result showed that the four levels of irrigation affected to statistically significant difference (p < 0.05). Applying 577.5 ml./plant had the highest in number of leaves, fruit peel thickness, Brix and antioxidant activity (EC50) (68 leaves, 0.54 cm., 12.90 °Brix and 1.19 1.19 mg_FWL-1). Therefore, the drip irrigation in 577.5 ml./plant for 2 times a day (morning and evening) was appropriate amount of irrigation for growth, yield and yield quality of organic watermelon Kinaree varieties.