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The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus

Author

Listed:
  • Pedro Luan Ferreira da Silva
  • Flávio Pereira de Oliveira
  • Walter Esfrain Pereira
  • Adriana Ferreira Martins
  • Camila Costa da Nóbrega
  • Danillo Dutra Tavares
  • Igor Gabriel dos Santos Oliveira Botelho
  • Alison José da Silva
  • Tales Emanuel Duarte Santos

Abstract

The aim of this study was to assess the correlation between physical attributes of a Yellow Oxisol and the shoot dry matter production in grasses from the Brachiaria genus in the Brejo region, in Paraíba. The experiment has been conducted since 2005 in an experimental area of the Center of Agricultural Sciences of the Federal University of Paraíba, Areia-PB (6°58’12’’ S; 35°41’15’’ W and 573 m altitude). The experimental design adopted was that of randomized complete blocks (RCB) with 4 treatments and 4 replications. T1- Brachiaria decumbens Stapf.; T2- Brachiaria brizantha (Hochst) Stapf.; T3- Brachiaria humidicola (Rendle) Schwnickerdt Vr.; T4- Brachiaria brizantha MG5 cv. Vitória. The soil in the experimental area was characterized as Dystrophic Yellow Oxisol with clay-sandy texture. Soil samples with disturbed and undisturbed structure were collected within the 0.0-0.10 m layer. The shoot dry matter of grasses was collected in october of 2018. The analyzed variables were- bulk density (BD), compaction degree (CD), total porosity (TP), macroporosity (Ma), microporosity (Mi), field capacity (θFC), permanent wilting point (θPWP), available water content (θAWC), soil aeration capacity (SAC), mean weighted diameter of wet and dry aggregates (Wet and Dry MWD), aggregate stability index (ASI) and saturated hydraulic conductivity (Kθ). The Student’s t-test and Pearson's correlation analysis (p <0.05) were performed. It was concluded that dry matter production was positively influenced by θFC and θPWP. And the increase of the average values of BD, CD, Wet and Dry MWD favored the increase of shoot dry matter production by grasses.

Suggested Citation

  • Pedro Luan Ferreira da Silva & Flávio Pereira de Oliveira & Walter Esfrain Pereira & Adriana Ferreira Martins & Camila Costa da Nóbrega & Danillo Dutra Tavares & Igor Gabriel dos Santos Oliveira Bot, 2020. "The Influence of Oxisol Physics Parameters on Dry Matter Production in Grasses of Brachiaria Genus," Journal of Agricultural Studies, Macrothink Institute, vol. 8(2), pages 265-283, June.
    • Handle: RePEc:mth:jas888:v:8:y:2020:i:2:p:265-283
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    1. de Oliveira Silva, Rafael & Barioni, Luis Gustavo & Hall, J. A. Julian & Moretti, Antonio Carlos & Fonseca Veloso, Rui & Alexander, Peter & Crespolini, Mariane & Moran, Dominic, 2017. "Sustainable intensification of Brazilian livestock production through optimized pasture restoration," Agricultural Systems, Elsevier, vol. 153(C), pages 201-211.
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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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