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| Oliveira,Francisco Assis de; Bezerra,José Renato Cortez; Oliveira,Bernardete Campos. |
| Objetivou-se estudar, num solo aluvial, franco siltoso, no vale do Açu, no Rio Grande do Norte, o efeito do momento da última irrigação e da população de plantas sobre a altura das plantas e a produtividade do algodoeiro herbáceo (Gossypium hirsutum L.r. latifolium Hutch), cultivar Acala del cerro. Os tratamentos foram definidos pelos momentos da última irrigação aos 65, 80, 95 e 110 dias após a emergência e pela população com 30.000, 60.000, 90.000 e 120.000 plantas/ha. Usou-se o delineamento experimental em blocos ao acaso, com parcelas subdivididas, e quatro repetições. A altura das plantas aumentou com o retardamento da última irrigação e com o tamanho das populações. Houve efeito (P <= 0,01) positivo da interação entre os momentos da última... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Algodão; Densidade de plantio; Manejo de água. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999001200003 |
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| Bezerra,Bergson Guedes; Santos,Carlos Antonio Costa dos; Silva,Bernardo Barbosa da; Perez-Marin,Aldrin Martin; Bezerra,Marcus Vinícius Cândido; Bezerra,José Renato Cortez; Rao,Tantravahi Venkata Ramana. |
| Field-based soil moisture measurements are cumbersome. Thus, remote sensing techniques are needed because allows field and landscape-scale mapping of soil moisture depth-averaged through the root zone of existing vegetation. The objective of the study was to evaluate the accuracy of an empirical relationship to calculate soil moisture from remote sensing data of irrigated soils of the Apodi Plateau, in the Brazilian semiarid region. The empirical relationship had previously been tested for irrigated soils in Mexico, Egypt, and Pakistan, with promising results. In this study, the relationship was evaluated from experimental data collected from a cotton field. The experiment was carried out in an area of 5 ha with irrigated cotton. The energy balance and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Standard relationship; SEBAL; Energy balance; Evaporative fraction; Latent heat flux. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300005 |
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| Vanomark,Giuliana Mairana Morais de Sousa; Espínola Sobrinho,José; Bezerra,José Renato Cortez; Santos,Carlos Antonio Costa dos; Azevedo,Pedro Vieira de; Silva,Saulo Tasso Araújo da; Bezerra,Bergson Guedes. |
| ABSTRACT The Mossoró-Assu-Baraúna district, Rio Grande do Norte State (RN), is recognized by the intense production of horticulture, mainly muskmelon for export. However, this region is often devastated by intense droughts. Thus, the muskmelon production is predominantly under irrigated condition and, due to constant threat of water resources collapse on the region, a rigorous irrigation water management in the region is needed. The main objective of this article was to analyze the seasonal pattern of energy balance partitioning and evapotranspiration on irrigated muskmelon crop on the region around Mossoró-RN. The study was carried out in two areas of commercial production of muskmelons in the Mossoró-Assu-Barúna district, during two growth seasons from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mossoró-Assu-Baraúna district; Net radiation; Latent and sensible heat fluxes; Soil heat flux. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100168 |
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