The objective of this study was to evaluate growth, physiologic and production indices of four hybrids of melon crop cultivated with and without soil covering and three irrigation frequencies. Two experiments were conducted during the period of June to September, 2001, in Mossoró, RN, using soil with and without a covering of polyethylene film. The experimental design was in completely randomized blocks with two repetitions per block. Three irrigation frequencies were used, with each one applied in an experimental block. The hybrids of melon cantaloupe, denominated PX3912947 (H1), Vera Cruz (H2), Trusty (H3) and Torreon (H4) were studied. Larger foliar area was obtained in the hybrids H1 and H2, independent of soil covering and irrigation frequency. In the planting system with soil covering, the melon crop increased the dry weight of aerial parts without fruits and tolerated higher irrigation frequencies. The hybrids H2 and H4 presented higher rates of absolute growth in bare soil, while the hybrid H4 reached a higher relative growth rate in this soil. The hybrids H1 and H3 produced large fruits beyond the standard. The covering of soil resulted in higher productivity and greater mean weight of fruits.
Cucumis melo L.; melon development; irrigation management
