Summary:
Published in Le Naturaliste Canadien 117: 19-24
The use or gypsum resistance blocks, fiberglass resistance blocks and tensiometers for the determination of soil water tension is common in agriculture, forestry and hydrology. These techniques were compared in relation to irrigation of the 1 + 0 seedlings in sandy nursery soils under summer conditions. In the upper layer of the sand, the tensiometers were reliable for tensions between 0 and 0.6 bar, even though the suggested limit set by the manufacturers is around 0.85 bar. The gypsum resistance blocks were sensitive up to 3 bars, but occasionally did not register values between 0 and 0.3 bar. ln addition to being operational at low tensions, the fiberglass blocks registered tensions up to 10 bars. Of the three types of sensors, the tensiometers are recommended when the soil is maintained at low water tension.
Sector(s):
Forests
Catégorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests, Seeds and Forest Seedlings Production
Departmental author(s):
Author(s):
PRÉVOST, Marcel, Jean STEIN and André P. PLAMONDON
Year of publication:
1990
Format:
Paper
How to get the publication:
Keyword(s):
nursery, soil water tension, resistance block, tensiometer, gypsum block, fiberglass block, irrigation, sensor, white spruce, European larch, seeds and forest seedlings production, Picea glauca, Larix decidua, production de plants, production de semences et de plants, épinette blanche, mélèze européen, pépinière, tension de l'eau du sol, bloc de résistance, tensiomètre, bloc de gypse, bloc de fibre de verre, irrigation, sonde