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Residual Effect of Gypsum and Phosphate Fertilization on the Second Corn Crop

Author

Listed:
  • Héliton de Oliveira Resende
  • Magno Gonçalves Braz
  • Alex Oliveira Smaniotto
  • Izamara Fonseca Tempesta
  • Claudio Hideo Martins da Costa
  • Simério Carlos Silva Cruz

Abstract

The objective of this study was to evaluate the residual effect of the gypsum when used with phosphate fertilization on the mineral nutrition, development and yield of second corn crop. The experiment was conducted at UFJ, with an experimental design consisting of 15 treatments established in randomized blocks in a 5 × 3 factorial scheme, with 4 replicates. The first factor corresponded to doses of gypsum (0, 1, 2, 4 and 8 Mg ha-1) and the second factor corresponded to doses of phosphorus (0, 40 and 80 kg ha-1). 16 months after the application of the various doses and treatments of agricultural gypsum, the following components were evaluated- dry root mass, macro and micronutrient contents in the leaves, production components and grain yield. The residual effect (16 months) of gypsum did not increase efficiency of phosphate fertilization for second corn crop. Under water stress conditions, the yield of corn grains responds to the application of agricultural gypsum above that of the dose recommended by the formula NP = 5 × g kg-1 of clay, which for this research is 2.93 Mg ha-1 of gypsum. Phosphorus provides increases in corn grain yield only when 100% of the recommended dose is applied.

Suggested Citation

  • Héliton de Oliveira Resende & Magno Gonçalves Braz & Alex Oliveira Smaniotto & Izamara Fonseca Tempesta & Claudio Hideo Martins da Costa & Simério Carlos Silva Cruz, 2024. "Residual Effect of Gypsum and Phosphate Fertilization on the Second Corn Crop," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 11(6), pages 535-535, April.
    • Handle: RePEc:ibn:jasjnl:v:11:y:2024:i:6:p:535
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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