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项与 Universidad Central De Las Villas 相关的药物

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Universidad Central De Las Villas

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100 项与 Universidad Central De Las Villas 相关的临床结果

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0 项与 Universidad Central De Las Villas 相关的专利（医药）

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584

项与 Universidad Central De Las Villas 相关的文献（医药）

2024-10-19·Australian Journal of Crop Science

Effects of gypsum, limestone and organic fertilizers on the properties of a Vertisol and sugarcane yield

作者: Cairo, Pedro Cairo ; Lopez, Oralia Rodriguez ; Herrera, Onelio Fundora ; Martin, Bladimir Diaz

The accelerated degradation of soils demands urgent study of recovery alternatives for their properties with sustainability criteria. This study was carried out to evaluate the effect of amendment agents on vertisol and their relationship with sugarcane yield. Organic fertilizer (sugarcane filter cake-SFC), natural minerals (gypsum-limestone) and chemical fertilization (nitrogen-phosphorus-potassium-NPK) were applied as treatments. The experiment was carried out in a complete randomized block design with ten treatments and four replicates. The following physical and chemical properties were evaluated: pH in water, pH in KCl, and organic matter, assimilable P2O5 and K2O, degree of soil aggregation, water-stable aggregates, permeability and plastic limit. The sugarcane yield components such as cane yield-CY (t ha-1) and sucrose yield-SY (t ha-1) were evaluated. Amendments of organo-mineral fertilizers with a chemical composition rich in calcium cause, in an acidic vertisol, produce significant increases in the pH, organic matter and assimilable phosphorus, as well as in the structure and their stability. The study of the relationships between physical and chemical properties and sugarcane yield showed high values of R2 (51 - 72%) and a coefficient of determination of 0.68-0.94, which shows a high degree of significance and the extent to which the indicators of the properties studied increase the yields (CY 104-141t ha-1, SY 18-25 t ha-1).

2022-11-09·2022 IEEE 40th Central America and Panama Convention (CONCAPAN)

Objective quality metrics for algorithm evaluation in Computed Tomography

作者: Orozco-Morales, Ruben ; Navarro-Castellanos, Christian ; Rodriguez-Gallo, Yakdiel

2021-12-12·December 2021

Effect of dolomitic limestone and organic fertilizers on some physical-chemical properties and the structure of a Vertisol

作者: Cairo, Pedro Cairo ; Lopez, Oralia Rodriguez ; Martin, Bladimir Diaz ; Armas, Joaquin Machado de

The application of natural mineral and organic fertilizers can increase soil productivity. The work was carried out in Vertisols sugarcane areas on the North coast of the province of Villa Clara, municipality of Sagua la Grande, Cuba, with the objective of assessing the effect of dolomitic limestone and organic fertilizers on some physical-chemical properties of a Vertisol. An experiment was conducted with dolomitic limestone levels and combinations of organic fertilizers (4 t ha-1 compost, 15 t ha-1 sugarcane filter cake) and fertilizers (NPK). The design used was stripe blocks. The soil analysis data used at the depth of 0-20 and 20-40 cm were at 8, 19 and 36 months after application of the treatments. The following indicators were evaluated: structure factor, permeability, stable aggregates, plasticity, T value, and exchangeable cations. The Ca/Mg ratio reached a maximum value of 2.58, which shows in the effect of the treatments on the interchangeable cations. Dolomitic limestone and its combinations with organic fertilizers showed significant positive effects on soil structure and consistency, both in the surface layer and in the subsoil, with residual impact over time up to 36 months. The results obtained showed a change in the category of structural indicators from regular to excellent (permeability 1.50-2.40) and from plasticity to moderately plastic (Plastic index 36.64 -13.72)

100 项与 Universidad Central De Las Villas 相关的药物交易

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100 项与 Universidad Central De Las Villas 相关的转化医学

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