Manurial experiments with grape vines in soils derived from granite. III.

Emanation from Granite Countertops

Emanation of radon ( 222 Rn) from granite countertops was measured using continuous and integrating radon monitors, and in air collected from encapsulated pieces of the countertops. A majority of the countertops emitted a measurable amount of radon. Although the granites contained the precursors, no thoron ( 220 Rn) emanation was detected. Gamma-ray spectroscopy was used to determine amounts of...

Mineral and Organic Matter Characterization of Density Fractions of Basalt- and Granite-Derived Soils in Montane California

Ecological and pest-management implications of sex differences in scarab landing patterns on grape vines

BACKGROUND Melolonthinae beetles, comprising different white grub species, are a globally-distributed pest group. Their larvae feed on roots of several crop and forestry species, and adults can cause severe defoliation. In New Zealand, the endemic scarab pest Costelytra zealandica (White) causes severe defoliation on different horticultural crops, including grape vines (Vitis vinifera). Underst...

Heavy Metal Release from Soils in Batch pHstat Experiments

BC of soils (van Breemen et al., 1983). Soil acidification may be defined as the loss of ANC and does not necesIn Slovakia H input into soils is increasing because alkaline dust sarily result in the decrease of the soil equilibrium pH emissions have been reduced since 1990. Our objectives were to exam(van Breemen et al., 1983). Süsser (1987) described ine (i) the metal release in H buffer react...

Granite: From genesis to emplacement

At low temperatures (<750 °C at moderate to high crustal pressures), the production of suffi cient melt to reach the melt connectivity transition (~7 vol%), enabling melt drainage, requires an infl ux of aqueous fl uid along structurally controlled pathways or recycling of fl uid via migration of melt and exsolution during crystallization. At higher temperatures, melting occurs by fl uid-absent...