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Insect folivore damage in Nothofagus Blume trees of central Chile and its association with bottom-up plant community attributes Ecología austral
Altmann,Scott H.
The study of insect folivore damage in South American Nothofagus spp. is important for monitoring the health of these trees and for basic research, although empirical information is scarce. Previous evidence on N. macrocarpa (A.DC.) F.M. Vásquez and R.A. Rodr, and N. glauca (Phil.) Krasser trees of central Chile suggested that insect folivore damage in these species can be intense and here I explored damage levels of the two species and their relationship with bottom-up community attributes such as plant architecture, light availability and host age. Foliage samples were collected at fi ve fi eld sites at the end of the 2007-2008 productive season in trees of N. macrocarpa and N. glauca and damage was measured based on lamina removal (complete absence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nothofagus macrocarpa; N. glauca; Plant-insect herbivore interaction; Foliage production; Plant architecture; Light availability; Leaf "thinness".
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2011000200001
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Effect of harvest period on foliage production and dry matter distribution in five cassava cultivars during the second plant cycle BABT
Sagrilo,Edvaldo; Vidigal Filho,Pedro Soares; Pequeno,Manoel Genildo; Vidigal,Maria Celeste Gonçalves; Scapim,Carlos Alberto; Kvitschal,Marcus Vinícius; Maia,Rogério Rui; Rimoldi,Fabrício.
The objective of this work was to study the leaf production pattern and dry matter distribution in cassava during the second plant cycle. The completely randomized experimental design with four replications was used, with five cultivars in the main plots and ten harvest times in the sub-plots. Foliage production was affected by plant age, being higher in hot periods. Leaf blades and petioles dry matter content presented a linear increase due to a progressive decrease in the amount of young leaves and ontogenetic factors. The stems provided, temporarily, carbohydrates to the plant re-growth, delaying the availability and use of storage roots dry matter. The dry matter content in the storage roots was lower during the vegetative and higher during rest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Manihot esculenta Crantz; Harvesting period; Foliage production; Dry matter distribution.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700019
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