Agronomic Effectiveness of Calcined Soluble Sources of P Fertilizers

Every winter fire strikes out in the Cerrado of Brazil due to climatic conditions of very low air humidity with high temperature burning natural vegetation or harvest residue on fields, and as growers apply fertilizers during winter, it may happen that broadcast fertilizers are affect by fire. Previous tests show decrease in P solubility of P fertilizers burned after field fire and no agronomic information is available under such conditions. Therefore, this project is aimed to investigate the effect of calcination on the solubility of soluble P fertilizers and on biomass yield of plants grown under greenhouse conditions.

IPNI-2014-BRA-65

Every winter, fire strikes the Cerrado region due to severe drought and high temperatures. Under such conditions (temperatures around 100°F and air humidity around 10%) fire becomes a major problem for natural reservation areas as well as for agricultural fields. As no-tillage has been greatly adopted by farmers, the crop residue on the soil has became a high potential fire risk and fires have occurred in many farm fields across the Mato Grosso. Read more


Year of initiation:2014
Year of completion:2015

Interpretive Summary

2015

Every winter, fire strikes the Cerrado region due to severe drought and high temperatures. Under such conditions (temperatures around 100°F and air humidity around 10%) fire becomes a major problem for natural reservation areas as well as for agricultural fields. As no-tillage has been greatly adopted by farmers, the crop residue on the soil has became a high potential fire risk and fires have occurred in many farm fields across the Mato Grosso.

2014

Every winter, fire strikes the Cerrado region due to severe drought and high temperatures. Under such conditions (temperatures around 100 F and air humidity around 10%) fire becomes a major problem for natural reservation areas as well as for agricultural fields. As no-tillage has been greatly adopted by farmers, the crop residue on the soil has became a high potential fire risk and fires have occurred in many farm fields across the Mato Grosso.



Publications

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Fire Does Not Reduce the Nutrient Value of Phosphorus Fertilizers Fire strikes many fields in the Cerrado region of Brazil every winter due to weather conditions of high temperatures and low humidity. Some fires happen accidentally or farmers intentionally burn cover crops, crop residues, and pastures. Farmers wondered if the fire had an effect on their fertilizer, or if reapplication was needed so a partnership with IPNI and local researchers was established to investigate the effect of high temperatures on two common P fertilizers, single superphosphate (SSP) and triple superphosphate (TSP).
Research with Impact


Project Leader

Claudinei Kappes, Fundação MT


Project Cooperators

None


IPNI Staff

E. Francisco


Location

Americas \ South America \ BRA \ Mato Grosso \ Rondonópolis


Topics

4r source, broadcast fertilizer, nutrient use efficiency

maize, soybean

Phosphorus (P)