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| Oliveira, Maria Inês Lopes de; UEL-Uiversidade Estadual de Londrina; Brunet, Didier; Pesquisador do Institut de Recherche pour le Développement (IRD); Mitja, Danielle; Pesquisador do Institut de Recherche pour le Développement (IRD); Cardoso, Wellington dos Santos; Graduação Biologia, Faculdade da Terra de Brasília , DF; Benito, Norton Pólo; Embrapa Cenargen; Guimarães, Maria de Fátima; Departamento de Agronomia, Universidade Estadual de Londrina-PR; Brossard, Michel; 2Institut de Recherche pour le Développement,. |
| This study aimed to determine the number of termite epigeal nests and estimate the soil turning capacity of termites in cultivated pasture environments and in a native vegetation area. Surveys were conducted in four areas: three pasture areas and a Cerrado area, measuring 5 ha each. For each nest, the height, the perimeter and diameter at the base were measured. The volume of each mound was calculated. Turned soil was determined by randomly sampling 30 termite mounds in a pasture area for bulk density determinations. The mean number of termite mounds per ha was 408; the highest number of termite nests (672 per ha) was found in the 10-year-old pasture. In terms of termite mound density, there was no difference between the Cerrado, 3-year-old pasture,... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.01.01.06-4; 5.01.01.02-1; 5.01.02.02-8 turned soil volume; Termite; Soil macrofauna Manejo e Conservação do Solo; Física do Solo; Entomologia Agrícola turned soil volume; Termite; Soil macrofauna. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7075 |
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| Ferreira, Alexandre Cunha de Barcellos; Borin, Ana Luiza Dias Coelho; Lamas, Fernando Mendes; Bogiani, Julio Cesar; Silva, Mellissa Ananias Soler da; Silva Filho, Joao Luis da; Staut, Luiz Alberto. |
| Sustainable production systems, such as the no-tillage system (NTS), have a tendency to increase organic carbon in the soil. However, in Brazilian cotton production, the conventional tillage system (CTS) is predominant, and long-term studies on cotton crop under the NTS are scarce. The present study aimed to evaluate the effect of soil management and crop rotation systems on the cotton fiber yield as well as on the carbon and nitrogen accumulation in the soil. This study was conducted in the Brazilian savanna over 9 years and consisted of the following four treatments with different soil management systems: the NTS and CTS with the succession or rotation of crops (cotton, soybean, maize, and Urochloa ruziziensis). The NTS increased the carbon content by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; No-tillage; Conventional tillage; Nitrogen; Carbon stock; 5.01.01.06-4. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/43039 |
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| Santos, Max Henrique Vieira dos; Universidade Federal de Alagoas; Araújo, Afranio César de; Universidade Federal de Alagoas]; Santos, Deon Moreno Ribeiro dos; Universidade Federal de Alagoas; Lima, Nadielan da Silva; Universidade Federal de Alagoas; Lima, Cícero Luiz Calazans de; Universidade Federal de Alagoas; Santiago, Antônio Dias; EMBRAPA/CPATC. |
| O presente trabalho foi realizado durante o ano de 2006 na área da Embrapa/UEP/Rio Largo, situada no Campus Delza Gitaí - Unidade Acadêmica Centro de Ciências Agrárias – UFAL, com o objetivo de avaliar a utilização da manipueira - resíduo gerado no processamento da mandioca (Manihot esculenta Crantz) como fonte de potássio na cultura da alface (Lactuca sativa L). O experimento foi conduzido em casa-de-vegetação, em delineamento inteiramente casualizado, com seis tratamentos e seis repetições, sendo os tratamentos: 0, 100, 200, 300, 400 e 500 mL de manipueira por vaso de 5 L. Utilizou-se a cultivar de alface Regina SF 3500, sendo as avaliações realizadas 33 dias após o transplantio. Foram analisadas as características: área foliar, massa fresca das folhas,... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.00.00.00-4; 5.01.01.06-4; 5.01.03.00-8; Manihot esculenta; Lactuca sativa; Potássio Ciências Agrárias Manihot esculenta; Lactuca sativa; Potassium. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4819 |
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