Physical and physicochemical characteristics of tomato fruits grown under different irrigation water levels and phosphorus sources and rates

Phosphorus (P) is one of the most limiting nutrients for growth and development crops, important soil fertility managements, since it affects quality fruits. With hypothesis that different levels irrigation phosphorus fertilization interfere in physical physicochemical properties tomatoes, objective this experiment was to verify analyze behavior fruits’ responses. The conducted a greenhouse at Hydraulic Irrigation Laboratory Federal Institute Education, Science, Technology State Goiás, Rio Verde, Brazil. A randomized block design used, with 4×2×4 split-plot arrangement three replications, totaling 96 experimental plots. treatments consisted four P2O5 rates: 25%, 50%, 100%, 200% recommended rate; two P sources: monoammonium phosphate (MAP) organo-mineral (OM); IWL: 75%, 125% field capacity. fruits were evaluated longitudinal (FLD) transversal (FTD) diameters, potential hydrogen (pH), titratable acidity (TA), total soluble solid (TSS) contents, TSS TA ratio (TSS/TA). effect interactions between factors IWL rate, source, rate source significant FLD FTD, TSS, TA, TSS/TA. effects pH. MAP combined 25% resulted tomato larger FTD. 77% 100% higher OM when 105% 125%.
 (This article belongs Special Issue: Agricultural Water Management Arid Semi-arid Regions)