Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Bruce W. Morse"'
Autor:
Bruce W. Morse, H. M. Kulman
Publikováno v:
Canadian Journal of Forest Research. 14:195-200
White spruce, Piceaglauca (Moench) Voss, mortality was estimated in two 142-ha, 11- and 12-year-old plantations in north central Minnesota, using small-format color aerial photography at a scale of 1:9600 and groundplots. A double sample with regress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::046e3ad877c7aaa8279d15193440910d
https://doi.org/10.1139/x84-038
https://doi.org/10.1139/x84-038
Publikováno v:
Environmental Entomology. 12:1587-1589
Individual females of Trichogramma nubilale Ertle and Davis were exposed to various densities (1 to 12) of European corn borer (ECB), ostrinia nubilalis (Hubner), egg masses for different exposure periods (l to 120 h). This parasitoid avoided excessi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7ad69e1eb50077fa0fb2cc273f30554
https://doi.org/10.1093/ee/12.5.1587
https://doi.org/10.1093/ee/12.5.1587
Autor:
H. M. Kulman, Bruce W. Morse
Publikováno v:
Northern Journal of Applied Forestry. 3:104-105
A hazard-rating model for defoliation by the yellowheaded spruce sawfly was developed and validated using 25 white spruce plantations in north central Minnesota. The dependent variable was degree of defoliation, and the independent variables, as meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2080ba11370f7d79fff4a6171e11df4
https://doi.org/10.1093/njaf/3.3.104
https://doi.org/10.1093/njaf/3.3.104