Výsledky vyhľadávania
- A Pilot Experiment of Forest Fertilization During an Outbreak of the Western Spruce Budworm in Northeastern Oregon
Mason Richard R.
Portland : USDA Forest Service , 1998. - 25 s. : 15 obr., 6 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1
kniha
- Recurrent Outbreak of the Douglas-Fir Tussock Moth in the Malheur National Forest : a Case History
Mason Richard R.
Portland : USDA Forest Service , 1998. - 14 s. : 5 obr., 3 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1kniha
- Forest floor and soil nutrients five years after urea fertilization in a grand fir forest
Tiedemann A.R.
Mason Richard R.
Wickman Boyd E.
Northwest science. Vol. 72, No. 2 (1998), s. 88-95
xcla - ČLÁNKYkniha
- Case history of population change in a Bacillus thuringiensis-treated vs. an untreated outbreak of the western spruce budworm
Mason Richard R.
Paul H. Gene
Portland : USDA Forest Service , 1996. - 11 s. : 3 obr., 1 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1kniha
- Monitoring Larval Populations of the Douglas-Fir Tussock Moth and the Western Spruce Budworm on Permanent Plots: Sampling Methods and Statistical Properties of Data. General Technical Report PNW-GTR-333, May 1994
Mason Richard R.
Paul H. Gene
Portland : U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station , 1994. - 23 s.: 11 obr., 6 tab.
xkni - KNIHY
1, z toho voľných 1kniha
- Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples
Mason Richard R.
Scott Donald W.
Paul H. Gene
Portland : USDA Forest Service , 1993. - 12 s. : 4 obr., 4 tab., 28 cm
xkni - KNIHY
1, z toho voľných 1kniha