ASPECTS OF THE SILVOPASTORAL SYSTEM CORRELATED WITH PROPERTIES OF A TYPIC QUARTZIPSAMMENT (ENTISOL) IN MATO GROSSO DO SUL, BRAZIL

Revista Brasileira de Ciência do Solo

Adriany Rodrigues Corrêa¹  Rafael Montanari¹  Valdemir Antônio Laura¹  Alex Marcel Melotto¹  Evelize Nayara Santana Da Silva¹  Douglas Martins Pereira Pellin¹  Anderson Secco Dos Santos¹ 

关键词: geostatistics;    resistance to penetration;    soil management;    agricultural sustainability;    geoestatística;    resistência à penetração;    manejo do solo;    sustentabilidade agrícola;   

DOI  :  10.1590/01000683rbcs20130691

来源: SciELO

【 摘 要 】

In Brazil, grazing mismanagement may lead to soil and pasture degradation. To impede this process, integrated cropping systems such as silvopasture have been an effective alternative, allied with precision agriculture based on soil mapping for site-specific management. In this study, we aimed to define the soil property that best sheds light on the variability of eucalyptus and forage yield. The experiment was conducted in the 2011/12 crop year in Ribas do Rio Pardo, Mato Grosso do Sul State, Brazil. We analyzed linear and spatial correlations between eucalyptus traits and physical properties of a Typic Quartzipsamment at two depths (0.00-0.10 and 0.10-0.20 m). For that purpose, we set up a geostatistical grid for collection at 72 points. Gravimetric moisture in the 0.00-0.10 m layer is an important index of soil physical quality, showing correlation to eucalyptus circumference at breast height (CBH) in a Typic Quartzipsamment. With an increase in resistance to penetration in the soil surface layer, there is an increase in eucalyptus height and in neutral detergent fiber content in the forage crop. From a spatial point of view, the height of eucalyptus and the neutral detergent fiber of forage can be estimated by co-kriging analysis with soil resistance to penetration. Resistance to penetration values above 2.3 MPa indicated higher yielding sites.

【 授权许可】

CC BY   
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