Interferencia producida por las malezas durante los dos primeros años en Pinus radiata D. Don
1999; Austral University of Chile; Volume: 20; Issue: 1 Linguagem: Inglês
10.4206/bosque.1999.v20n1-06
ISSN0717-9200
AutoresMarcelo J. Kogan, Rodrigo Figueroa,
Tópico(s)Seedling growth and survival studies
ResumoTo quantify the weed detrimental effect during the first two growing seasons, two field experiments were conducted at Portezuelo (72°24' Long W -36°31' Lat S) and Pemuco (72°11' Long W -36°58' Lat S).Also, the required weed control intensity and the accumulative effect of the two first years of weed control were determined.The pine plants' biomass index (D 2 H) decreased 65% when weeds were not controlled during the second year.A broad weed control programme was not necessary during the second year, being strip application of herbicides enough.When the area controlled was only equivalent to a "spotgun" application, pine plants grew as poorly as the ones in the weedy area during the second year.
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