GROWTH OF RICE CULTURE SUBMITTED TO OMISSION OF NUTRIENTS IN THE STATE OF PARA OXISOLS

Abstract

The present study aims to evaluate the effect of the omission of macro and micronutrients in the growth of rice plants in sandy loam Oxisols and clayey. The experiment was conducted in a greenhouse at the Federal Rural University of Amazonia (UFRA) in the city of Belém / PA. The treatments were: T1) Control; T2) Complete (Liming + macronutrients  + B, Zn, Cu, Si, Ni); T3) NPK + B, Zn, Cu, Mn + Si (without lime); T4) N omission; T5) P omission; T6) K omission; T7) Ca omission; T8) Mg omission; T9) Omission of B, Zn, Cu, Si, Ni; T10) Si omission; and T11) Ni omission. In two substrates (OXISOL texture medium and clay). A deficiency of phosphorus caused directly lower plant growth in OXISOL medium texture. While the omission of potassium in the OXISOL clayey of provided less growth, which suggested that the limitation of these nutrients caused restrictions on plant development.   KEYWORDS: deficiency, Oryza sativa, plant nutrition.