Spatial variability of vegetation index and soil properties in an integrated crop-livestock system

Author:

Bernardi Alberto C. de C.1,Grego Célia R.2,Andrade Ricardo G.3,Rabello Ladislau M.4,Inamasu Ricardo Y.4

Affiliation:

1. Embrapa Pecuária Sudeste, Brazil

2. Embrapa Monitoramento por Satélite, Brazil

3. Embrapa Gado de Leite, Brazil

4. Embrapa Instrumentação, Brazil

Abstract

ABSTRACT The knowledge of soil property spatial variability is useful for determining the rational use of inputs, such as the site-specific application of lime and fertilizer. The objective of this study was to evaluate the vegetation index and spatial variability of physical and chemical soil properties in an integrated crop-livestock system (ICLS). Soil samples were taken from a 6.9 ha area in a regular hexagon grid at 0-0.20 m depths. Soil P, K, Ca, Mg, and cation exchange capacity - CEC; base saturation; clay and sand were analyzed. Soil electrical conductivity (ECa) was measured with a contact sensor. The site was evaluated at the end of the corn season (April) and during forage production (October) using Landsat 5 images, remote sensing techniques and a geographic information system (GIS). Results showed that the normalized difference vegetation index (NDVI) was associated with ECa and soil parameters, indicating crop and pasture variations in the ICLS. Geostatistics and GIS were effective tools for collecting data regarding the spatial variability of soil and crop indicators, identifying variation trends in the data, and assisting data interpretation to determine adequate management strategies.

Publisher

FapUNIFESP (SciELO)

Subject

Agronomy and Crop Science,Environmental Engineering

Reference22 articles.

1. SEBAL - Surface Energy Balance Algorithms for Land: Advanced training and user’s manual;Allen R.,2002

2. Evolução tecnológica e arranjos produtivos de sistemas de integração lavoura-pecuária-floresta no Brasil;Balbino L. C.;Pesquisa Agropecuária Brasileira,2011

3. Ferramentas de agricultura de precisão como auxílio ao manejo da fertilidade do solo;Bernardi A. C. de C.;Cadernos de Ciência & Tecnologia,2015

4. Variabilidade espacial de parâmetros físicoquímicas do solo e biofísicos de superfície em cultivo do sorgo;Bernardi A. C. de C.;Revista Brasileira de Engenharia Agrícola e Ambiental,2014

5. Revised Landsat - 5 TM radiometric calibration procedures and postcalibration dynamic ranges;Chander G.;IEEE Transactions on Geoscience and Remote Sensing,2003

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