Anais do XXXIV Congresso Brasileiro de Ciência do Solo

EVALUATION OF INFILTRATION CHARACTERISTICS AND MODELS OF AN ALFISOL UNDER TUNG (ALEURITES MOLUCCANA (L.) WILD)-BASED CROPPING SYSTEMS

GABRIEL OLADELE⁽²⁾; JOSÉ MIGUEL REICHERT⁽²⁾; DEONIR SECCO⁽¹⁾; ALAN EBANO OLIVEIRA⁽²⁾;
1 - UNIVERSIDADE ESTADUAL DO OESTE DO PARANÁ — UNIOESTE. CASCAVEL (PR); 2 - UNIVERSIDADE FEDERAL DE SANTA MARIA, BAIRRO CAMOBI;

The aim of this study was to evaluate infiltration characteristics and models in fitting infiltration data in tung-based cropping systems in an Alfiso. Treatments were sole Tung (T); Tung-crambe-sunflower rotation + organic fertilizer (T-C-S+O); Tung-crambe-sunflower rotation + in-organic fertilizer (T-C-S+I) and Tung-oats-peanut rotation (T-Ot-P), in four replications. Soil samples were collected from soil depths, 0-10, 10-20, 20-40, 40-60 and 60-80 cm to determine soil physical properties. Infiltration tests were performed using double ring method. Initial sorptivity and infiltration rate was highest in T-Ot-P and T-C-S+O. Horton model was the better of the empirical approaches while Philip equation was better of the theoretical based models. In all, Philip’s equation almost gave a perfect fit (NSE ≥ 0.98) of the data set. This study affirmed the importance of cover crops and crop rotation for soil and water conservation.

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