51 research outputs found
Composition of weed flora in spring cereals in Finland
vokKirjasto Aj-kKevätviljapeltojen rikkakasvit ja niiden runsau
A Case Study of the Effects of CO2-Induced Climatic Warming on Forest Growth and the Forest Sector : A. Productivity Reactions of Northern Boreal Forests.
The purpose of this section is to evaluate the effects of changes in climate under the GISS 2 × CO2 scenario (considered in Section 3) on the productivity of boreal forests. Some of the results reported here will be used as inputs to a further set of experiments concerned with the effect of productivity changes on forestry as an economic activity (see Section 6). Together Sections 5 and 6 provide a case study (at a hemispheric scale) of the advantages and limitations of linking biophysical and economic models in attempts to assess the effects of climatic change
Kevätviljamaiden rikkakasvit ja niiden runsaus vuonna 1962 suoritettujen tutkimusten valossa
vokKirjasto Aj-
Heinäsadon kasvilajikoostumuksen vaihteluista
Ilmestyy Maaseudun Tulevaisuuden liitteenävokKirjasto Aj-
Petrolivalmisteista sarjakukkaisviljelysten rikkaruohontorjunnassa
vKirjasto Aj-kOn weed control with petrol products in the growing of unbelliferous plant
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