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Registros recuperados: 22
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The relationship between plant density and survival to water stress in seedlings of a legume tree Acta Botanica
Honda,Eliane Akiko; Pilon,Natashi Aparecida Lima; Durigan,Giselda.
ABSTRACT Competition for soil water is one of the major processes that drive the assembly of plant communities, particularly in regions subjected to long dry seasons. The relationship between plant density and soil water competition has strong, but poorly understood, practical implications for population dynamics, restoration and conservation. We planted seedlings of the pioneer legume tree Senegalia polyphylla in containers and assessed the effects of plant density on their resistance to water stress. We completely eliminated the above-ground parts (stem and shoots) of randomly selected plants at 60-days post-planting in order to create three different densities of seedlings. We saturated the soil of the remaining seedlings and then deprived them of...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Drought stress; Evapotranspiration; Management; Plant competition; Senegalia polyphylla; Soil water; Thinning.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300602
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Volume equations for Khaya ivorensis A. Chev. plantations in Brazil Anais da ABC (AABC)
OLIVEIRA,XIMENA M. DE; RIBEIRO,ANDRESSA; FERRAZ FILHO,ANTONIO CARLOS; MAYRINCK,RAFAELLA C.; LIMA,RENATO R. DE; SCOLFORO,JOSÉ ROBERTO S..
Abstract African mahogany (Khaya spp.) plantations are in expansion in Brazil and in the world. This fact justifies the need for studies related to its growth and yield. This paper aimed to evaluate the performance of single-entry and double-entry models for estimating merchantable and total volume for Khaya ivorensis plantations before the first thinning (7 years) and expected final cut (15 years). Volume data was from 100 and 46 trees in Minas Gerais and Pará states, respectively, by using an electronic dendrometer (Criterion RD 1000). Observed volumes were calculated by Smalian’s formula. To validate the optical dendrometer, 10 trees were felled and had their volume measured, and compared with the volumes measured indirectly. The results showed that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: African mahogany; Forest mensuration; Non-destructive measurements; Thinning.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703285
Registros recuperados: 22
Primeira ... 12 ... Última
 

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