Zobrazeno 1 - 10
of 63
pro vyhledávání: '"PAULO ROBERTO RIBEIRO ROCHA"'
Stabilization time of chemical attributes and nutritional quality of manipueira for biofertilization
Autor:
Marcelo Hentges, José Maria Arcanjo Alves, Luiz Fernandes Silva Dionísio, Deyse Cristina Oliveira da Silva, Yenara Alves Guedes, Alberlan Ferreira Gomes, Paulo Roberto Ribeiro Rocha
Publikováno v:
Agro@mbiente On-line, Vol 17, Iss 00 (2023)
Manioc flour and gum (starch) have a cultural value for Amazonians. The processing of cassava roots releases manipueira, a liquid waste with a high polluting potential, due to its high levels of hydrocyanic acid. The large volumes of manipueira produ
Externí odkaz:
https://doaj.org/article/f5cd0b7e22354e24932b5b8c36d077b2
Autor:
Mauricio Lourenzoni Augusti, Cassia Rejane do Nascimento, Iasmin Kele Amancio Costa da Silva, Paulo Roberto Ribeiro Rocha, Richard Alcides Alvarez Molina, Sandra Catia Pereira Uchoa
Publikováno v:
Revista de Agricultura Neotropical, Vol 10, Iss 4 (2023)
A calagem apresenta impactos positivos na qualidade dos solos, como o aumento do pH e na disponibilidade de nutrientes. No estado de Roraima, solos agricultáveis, em grande parte, estão sob domínios do bioma savana e apresentam pH ácido e distrof
Externí odkaz:
https://doaj.org/article/27dd8e806b6f412685723b8885aa31d6
Autor:
Paulo Roberto Ribeiro Rocha, Sonicley da Silva Maia, Valdinar Ferreira Melo, Sandra Cátia Pereira Uchôa, Karine Dias Batista, Luiza Amorim Cavalcante
Publikováno v:
Acta Scientiarum: Agronomy, Vol 46, Iss 1 (2023)
Conservation practices such as no-tillage are necessary to maintain, and/or improve agricultural soil quality. However, straw formation and maintenance in tropical regions is a limiting factor to adopting this system. In this sense, this research aim
Externí odkaz:
https://doaj.org/article/8ed704164b4d4cebaa5da196f4bdaeee
Autor:
Armando José da Silva, Robison Alves da Silva, Valdinar Ferreira Melo, Mauricio Lourenzoni Augusti, Paulo Roberto Ribeiro Rocha, José Maria Arcanjo Alves
Publikováno v:
Agro@mbiente On-line, Vol 16 (2022)
Brazilian wheat production is concentrated in the South region and does not fully meet the domestic demand for wheat. The Brazilian Cerrado has become an area of great potential for wheat cultivation due to investments in genetic improvement research
Externí odkaz:
https://doaj.org/article/2a15bc92c4524199bd70e5d62114a63f
Autor:
Anna Bárbara de Souza Cruz, José de Anchieta Alves de Albuquerque, Paulo Roberto Ribeiro Rocha, Leandro Torres de Souza, Diego Lima de Souza Cruz, Maria Beatriz Bernardes Soares, Thaís Santiago Castro, Thatyele Sousa dos Santos, Edgley Soares da Silva
Publikováno v:
Agronomía Colombiana, Vol 38, Iss 2 (2020)
As a control measure against weeds, the use of herbicides is an effective and inexpensive alternative. However, there are no products recommended for the cultivation of cowpea in Brazil, making it necessary to search for alternative solutions. The ob
Externí odkaz:
https://doaj.org/article/2df23a423ddb49e4a8745f6108254b0b
Autor:
Valdinar Ferreira Melo, Danielly Teixeira da Silva, Ariane Evald, Paulo Roberto Ribeiro Rocha
Publikováno v:
Agro@mbiente On-line, Vol 11, Iss 2, Pp 101-110 (2017)
Environmental concern has led the agricultural community to search soil management systems aimed at maintaining or improving the quality of agricultural soils. The objective of this study was to evaluate soil quality (QS), by means of chemical and mi
Externí odkaz:
https://doaj.org/article/2d84e971b8b34171a2a5d73b0fc8d123
Autor:
Denysson Amorim da Silva, José de Anchieta Alves de Albuquerque, José Maria Arcanjo Alves, Paulo Roberto Ribeiro Rocha, Roberto Dantas de Medeiros, Everton Luis Finoto, Pedro Henrique Santos de Menezes
Publikováno v:
Scientia Agropecuaria, Vol 9, Iss 1 (2018)
Objetivou-se com este trabalho caracterizar plantas daninhas em área rotacionada de milho e feijão-caupi em sistema de plantio direto. As coletas foram realizadas quatro meses após a colheita do milho. Para amostragem, utilizou-se quadrado de ferr
Externí odkaz:
https://doaj.org/article/682893b56692477192aad2681db497c4
Autor:
Kelter Carvalho dos Santos, Sandra Catia Pereira Uchôa, Valdinar Ferreira Melo, José Maria Arcanjo Alves, Paulo Roberto Ribeiro Rocha, Carla Klis dos Santos Ximenes
Publikováno v:
Agro@mbiente On-line, Vol 8, Iss 3, Pp 306-317 (2014)
Biological nitrogen fixation (BNF) can be limited by the high availability of nitrogen (N). The soil clay fraction and organic matter content control the availability of N, and it is possible that these attributes affect the symbiotic fixation in soi
Externí odkaz:
https://doaj.org/article/4aa771f119174e03ab06050e58a5bfdf
Publikováno v:
Agro@mbiente On-line, Vol 11, Iss 2 (2017)
A preocupação ambiental tem levado a comunidade agrícola a buscar manejos que visam a manutenção ou melhoria da qualidade dos solos agrícolas. Objetivou-se com este trabalho avaliar a qualidade do solo (QS), por meio de atributos químicos e mi
Externí odkaz:
https://doaj.org/article/b0fe1af59ff04bd4a52ed9c1450c7e53
Autor:
Siumar Pedro Tironi, Leandro Galon, Alexandre Ferreira da Silva, Cíntia Maria Teixeira Fialho, Paulo Roberto Ribeiro Rocha, Autieres Teixeira Faria, Ignacio Aspiazú, Cesar Tiago Forte, Antonio Alberto da Silva, André Luiz Radünz
Publikováno v:
Ciência Rural, Vol 44, Iss 9, Pp 1527-1533 (2014)
Objetivou-se com o trabalho avaliar os efeitos de épocas de emergência das plantas daninhas, azevém e nabo, sobre a cultura da cevada. O experimento foi conduzido em delineamento de blocos casualizados, arranjado em esquema fatorial 2x5, com três
Externí odkaz:
https://doaj.org/article/8c2b4951cdfd4a00a07ed7abc742cd4c