CE:7216 CF: cag054172147
RESEARCH ARTICLE
Effects of phosphate limestone on structure and quality under sugarcane vertisoles
Efectos de la caliza fosfatada sobre la estructura y calidad de vertisoles bajo caña de azúcar
Pedro Cairo Cairo1, Joaquín Machado de Armas2, Pedro Torres Artiles2, Alianny Rodríguez Urrutia2, Oralia Rodríguez López2 y Rafael Jiménez Carrazana2
1 Universidad de Atacama. CRIDESAT Centro Regional de Investigaciones y Desarrollo Sustentable de Atacama Copayapu 485 Copiapó Chile.
2 Centro de Investigaciones Agropecuarias (CIAP), Facultad de Ciencias Agropecuarias, Universidad Central “Marta Abreu” de las Villas (UCLV). Carretera a Camajuaní km 5 ½. Santa Clara, Villa Clara, Cuba, CP 54830
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ABSTRACT
The work was developed in sugarcane areas of cuban vertisols of the north coast of the province of Villa Clara municipality of Sagua la Grande, with the aim of evaluating the effectiveness of phosphate limestone and their combinations with fertilizers and organic manure on the structure and quality of vertisols under sugarcane cultivation. An experiment with phosphate limestone levels and combinations with organic manure (compost, filter cake) and fertilizers (NPK) was carried out on a wasstrip-block design. A soil analysis was performedat the depth of 0-20 and 20 -40 cm 36 months after the application of treatments. Organic matter, stable aggregates, factor structure, permeability, T value, exchangeable cations, index soil quality and productivity of sugarcane were evaluated. Phosphate limestone and there combinations with organic manures manifested significant effects on soil structure both in the surface layer and subsurface with residual impact over time to 36 months. The results show the close relationship between phosphate limestone and there combinations with organic manures on soil quality index additive, yield of sugarcane and economic impact.
