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| Araújo, Afrânio César de; Araújo, Ariosto Céleo de; Dantas, Max Kleber Laurentino; Pereira, Walter Esfrain; Aloufa, Magdi Ahmed Ibrahim. |
| Objetivou-se com este trabalho avaliar o efeito de substratos orgânicos sobre o crescimento inicial do mamoeiro ‘Formosa’. O experimento foi conduzido em casa-de-vegetação em delineamento em blocos ao acaso com quatro tratamentos: solo, composto orgânico, húmus de minhoca e esterco bovino, e quatro repetições. O húmus de minhoca proporcionou valores mais elevados para número de folhas, altura de plantas, diâmetro caulinar, área foliar, massa seca do caule, massa seca da raiz e massa seca das folhas. Não houve diferenças significativas entre húmus de minhoca e composto orgânico para as três últimas variáveis. O esterco bovino não diferiu da testemunha para número de folhas, diâmetro caulinar, massa seca do caule, massa seca das folhas, comprimento da raiz e... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Farming Systems; Fruit and berries. |
| Ano: 2013 |
URL: http://orgprints.org/24415/1/ARA%C3%9AJO%2C%20Afr%C3%A2nio%20C%C3%A9sar%20de_Utiliza%C3%A7%C3%A3o%20de%20substratos%20org%C3%A2nicos%20na%20produ%C3%A7%C3%A3o%20de%20mudas.pdf |
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| Mesquita, Mário Luiz Ribeiro; Andrade, Leonaldo Alves; Pereira, Walter Esfrain. |
| The objective of this research was to assess the density, floristic composition, phytosociology and diversity of a soil weed seed bank ex situ by germination in a greenhouse and in situ by weed sampling on a smallholder corn field located in Lago Verde County, Maranhão State. Fifteen pairs of 25 m2 plots were designated. In half of these plots, 90 soil samples were collected with an open metal template measuring 25 x 16 x 3 cm and placed in a greenhouse to germinate. In the other half, 90 weed samples were collected using the same metal template. We recorded a total of 1,998 individuals from 40 species, 31 genera and 16 families, from which 659 individuals germinated in situ and 1,339 exsitu. Density was higher ex situ, with 372 plants m-2. The Cyperaceae... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias Fitotecnia cyperaceae; Competition; Biological invasion; Phytosociology; Smallholder farmers Botânica Sistemática Plantas Invasoras. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19360 |
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| Ribeiro, João Everthon da Silva; Coêlho, Ester dos Santos; Figueiredo, Francisco Romário Andrade; Pereira, Walter Esfrain; Albuquerque, Manoel Bandeira de. |
| Determining leaf area is important for studies involving plant growth and development. The aim of the present study was to obtain models for estimating leaf area of Psychotria carthagenensis and Psychotria hoffmannseggiana using linear measurements of leaf blades (length and width). Two hundred leaf blades of each species were collected in Parque Estadual Mata do Pau-Ferro in the municipality of Areia, Paraíba, Northeast Brazil. The equations evaluated for producing potential models included the following: linear, quadratic, potential and exponential. The criteria used to determine the best model(s) were as follows: high coefficient of determination (R²), low root-mean-square error (RMSE), low Akaike information criterion (AIC), high Willmott concordance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biologia biometry; Non-destructive method; Modeling; Rubiaceae. Ecologia. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43494 |
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