Chemical Characteristics of Irrigated Ultisol with Dairy Effluent Dilutions

AUTOR(ES)

Costa, Andrezza Grasielly, Alves, Sandra Maria Campos, Batista, Rafael Oliveira, Mendes, Hérick Claudino, Souza, Danilo Isac Maia de

FONTE

Floresta Ambient.

DATA DE PUBLICAÇÃO

07/06/2018

RESUMO

ABSTRACT The objective of this work was to analyze the changes in the chemical attributes of an Ultisol irrigated with different dairy effluent dilutions. The experiment was set up using a randomized block design with five dilutions of dairy effluent (DE) in public water supply (PWS) (T1 - only PWS, T2 - 10% of DE plus PWS, T3 - 20% of DE plus PWS, T4 - 30% of DE plus PWS, and T5 - 40% of DE plus PWS). Soil samples were collected at five depths to quantify the attributes of pH, organic matter (OM), potassium (K), phosphorus (P) and electrical conductivity of the soil saturation extract (ECss). No significant effects of dairy effluent dilutions were found in altering the pH, OM and K+ values of the Ultisol after 240 days of application. However, there was a significant increase of P in T4, and of ECss mainly in the 0.10 to 0.20 m layer of T5.

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