Revista Brasileira de Agricultura Irrigada v.11, nº.1, p. 1155 - 1165, 2017 ISSN 1982-7679 (On-line) Fortaleza, CE, INOVAGRI – http://www.inovagri.org.br DOI: 10.7127/rbai.v11n100556 Protocolo 556.17 – 23/01/2017 Aprovado em 21/02/2017 DISTRIBUTION OF NUTRIENTS IN PROFILE OF A LATOSOL SUBSURFACE DRIP VIA FERTIGATED Nelmício Furtado da Silva 1 , Fernando Nobre Cunha 2 , Marconi Batista Teixeira 3 , Frederico Antonio Loureiro Soares 3 , Fernando Rodrigues Cabral Filho 4 ABSTRACT It is important to follow the dynamics and distribution of nutrients in the soil profile in crops with fertigation. This practice allows you to establish or adjust the appropriate application of fertilizers and management of irrigation water, and it can prevent environmental damage such as soil salinization and contamination of ground water and surface water sources. Starting from the hypothesis that the increase in water depth extends the distribution of nutrients in the soil solution, is aimed in this work to study the dynamics and distribution of nutrients P, K, Mg and Ca in the profile of an Latosol fertilized via drip subsurface cultivated with sugarcane. The experiment was carried out in the experimental area belonging to the Federal Institute Goiano - Campus Rio Verde, GO. The experimental design was a randomized block design with four replications. The factors analyzed were three levels of fluid replacement (0, 50 and 100% of field capacity). Soil samples were collected after fertigation installment of finish using a ring with dimensions of 0.05 x 0.05 cm in diameter. Sampling proceeded depth by depth in equidistant grid points of 0.05 x 0.05 m on a profile of 0.40 x 0.40 cm samples totaling 96 in all treatments. The increase in water depth increased amplitude distribution of nutrients in the soil profile thereby increasing the availability of nutrients to the root uptake. Keywords: Sugarcane, localized irrigation, nutrient bulb. DISTRIBUIÇÃO DOS NUTRIENTES NO PERFIL DE UM LATOSSOLO FERTIRRIGADO VIA GOTEJAMENTO SUBSUPERFICIAL RESUMO 1 Agronomist Engineer, Doctoral Student in Agricultural Sciences - Agronomy, Hydraulics Laboratory and Irrigation IF Goiano - Campus Rio Verde, Rio Verde - GO. Highway South Goiana Km 01, Rio Verde - GO - Brazil, CEP 75901-970, Tel: (064) 3620-5600. Email: nelmiciofurtado@gmail.com 2 Agronomist Engineer, Doctoral Student in Agricultural Sciences - Agronomy, Hydraulics Laboratory and Irrigation IF Goiano - Campus Rio Verde, Rio Verde - GO. 3 Agronomist Engineer, Teacher, Doctor of Agronomy, Hydraulics Laboratory and Irrigation IF Goiano - Campus Rio Verde, Rio Verde – GO. 4 Agronomy Student; Hydraulics Laboratory and Irrigation IF Goiano - Campus Rio Verde, Rio Verde - GO.