Opbrengstvermeerdering in den boschbouw
Correlation coefficients were calculated to examine the relation over the period 1899-1926 between beet yield and sugar content, and rainfall, sunshine and temperature. For every decade and combinations of two or more decades of the period March-October, the correlation coefficient was calculated. The interrelations between the three elements were ...
A soil survey in the Y-polders was combined with studies of yield of sugarbeet on different soils. Subsoil differences were shown to be the most important factor. Topsoils in the Y-polders proved to be uniform in composition and to consists of young Ysselmere clay (underwater deposits) with a lutum (clay) content of 35-40%. The thickness of the cla...
Reactie van gewassen op de verzilting van de bodem als gevolg van de watersnood
Voorlichting CILO