Introduction
An increasing pressure to introduce new fertilizers in Central Buenos Aires province (Argentina) providing S and N has brought up new questions. Is S needed? Which are the effects of N and S applied together on wheat productivity? What are the effects of such mixtures on soil properties and, specifically, on P availability?
Previous information indicates S deficiency in environments of high wheat production in the Pampean Region (10000 kg ha-1) and effects on soil pH and P availability when utilizing NS liquid mixture.
Objective: to evaluate wheat productivity (yield + protein) response to NS addition, considering two sources of P (fertilizer P and native P dissolved by the NS mixture).