Vânia da Silva Fraga

Chemical and Physical Quality of the Entisol in a Natural Regeneration Area in the Semiarid Region of Paraiba

Cássio Ricardo Gonçalves da Costa, Vânia da Silva Fraga, George Rodrigues Lambais, Kilmer Oliveira Soares, Stella Ribeiro Prazeres Suddarth & Salomão de Sousa Medeiros · Journal of Experimental Agriculture International · 2019

The change in the use of the soil causes an imbalance in the ecosystems, altering the chemical and physical properties, which can make their natural recovery unviable. This study aimed to characterize chemically and physically an Entisol under the Caatinga area in a 30 years ecol...

Open access Research Article 10.9734/jeai/2019/v35i230202

Response of the Growth of Cowpea Varieties Submitted to Organic Fertilization Produced under a Regosol in the Semiarid Region of Paraiba

Cássio Ricardo Gonçalves da Costa, Marcos Gomes da Silva & Vânia da Silva Fraga · Journal of Experimental Agriculture International · 2020

The objective of this work was to compare growth parameters of traditional varieties of cowpea with commercial varieties based on agroecological processes in the semi - arid region of Paraiba. The experiment was installed in the factorial scheme of 3 blocks x 4 treatments x varie...

Open access Research Article 10.9734/jeai/2020/v42i130454

Effects of Treated Wastewater on Soil Recovery in Degraded Semiarid Region

Emanoel Lima Martins, Renato Francisco da Silva Souza, Vânia da Silva Fraga & Salomão de Sousa Medeiros · Journal of Experimental Agriculture International · 2019

This study aimed to evaluate the effect of treated wastewater application on soil organic matter and phosphorus recovery in a degraded soil in the semiarid region of Brazil. An experiment was carried out with irrigation of five caatinga forest species, in which three treatments w...

Open access Research Article 10.9734/jeai/2019/v41i630430