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| Sousa,Elias Fernandes de; Araújo,Marilaine Campanati; Posse,Robson Prucoli; Detmann,Edenio; Bernardo,Salassier; Berbert,Pedro Amorim; Santos,Paulo Albernaz dos. |
| Leaf area has significant effect on tree transpiration, and its measurement is important to many study areas. This work aimed at developing a non-destructive, practical, and empirical method to estimate the total leaf area of green dwarf coconut palms (Cocos nucifera L.) in plantations located at the northern region of Rio de Janeiro state, Brazil. A mathematical model was developed to estimate total leaf area values (TLA) as function of the average lengths of the last three leaf raquis (LR3), and of the number of leaves in the canopy (NL). The model has satisfactory degree of accuracy for agricultural engineering purposes. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canopy structure; Mathematic model; Estimating model. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000600014 |
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| Marcondes, Maria Celeste; UEL - Universidade de Londrina; Andreoli, Claudinei; Embrapa Soja; Miglioranza, Édison; UEL. |
| The objective of this research was to determine the deterioration rate of BRS 208 and CD 104 wheat cultivar seeds, treated with fungicides, by applying the viability equation. Seeds were stored in conventional warehouses in Mauá da Serra and Londrina, in the State of Paraná, Brazil. Four seed lots were divided into four replications, half being treated with Carboxin + Thiran and the other half taken as controls, without treatment, and these were stored for 300 days. The germination data were transformed into probit, and a straight line was adjusted between 0 and 30 days. The treated seed lot of cv. BRS 208 stored in Londrina gave seed deterioration rates varying from 0.8.10-3 to 1.3.10-3, not differing from the values given for the similar lot stored in... |
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Palavras-chave: 5.01.03.03-2 Triticum aestivum L.; Deterioration; Storage; Seed treatment; Mathematic model Produção e Beneficiamento de Sementes Triticum aestivum L.; Deterioration; Storage; Seed treatment; Mathematic model. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6455 |
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