CRESCIMENTO DO MELOEIRO GÁLIA FERTIRRIGADO COM DIFERENTES DOSES DE NITROGÊNIO E POTÁSSIO

Abstract

The knowledge of the parameters of the growth of a culture is of fundamental importance for a rational and efficient nutritional handling. An experiment was carried out during the period of october to december of 2005, in farm of the producing melons region of Assu-Mossoró, with the objective of analyzing the growth of the melon plant Gália fertirrigation with different doses of nitrogen and potassium. The randomized blocks in a factorial scheme (3 x 3), with three replications. The Treatments consisted of combination the three nitrogen doses (N1-42, N2-84 e N3-126 kg ha-1) and potassium (K1-106, K2-212 e K3-322 kg ha-1), being the levels N2 e K2 are most recommended in technical literature, applied for fertirrigation with different irrigation depths (L1 = 1,1.NTI, L2 = 0,9.NTI and L3 = 0,7.NTI). The appraised variables were index of leaf area (IAF), matter dries of the aerial part (MSPA) and the reason of leaf area (RLA). The index of leaf area and I accumulate it of matter dries can be dear for equations polynomials of the second degree. The index of leaf area and the matter accumulation dries were influenced positively by the increment in the doses of applied nutrients and for the irrigation depths. The reason of leaf area of the melon plant is reduced during the cycle of the culture, being influenced by the irrigation depths than for the levels of nitrogen and potassium.