Gastric cancer is the third most common cause of cancer-related death in the world, and it remains difficult to cure in Western countries, primarily because most patients present with advanced disease. In the United States, stomach malignancy is currently the 15th most common cancer.
The condition of the tendrils near the fruit stem is another indicator of when a watermelon is ready to pick. When they are green at the attachment point, the fruit is not yet ripe, but when they start to turn brown and dry, it is harvest time.
Good-quality Yellow watermelon will be firm, evenly-shaped, heavy for its size and have a deep-pitched tone when slapped with an open palm. Medium to large melons are generally easier to tell when ripe. Yellow skin on one side of the melon is where the fruit contacted the ground and does not affect quality.