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There are clear indications that Birch grows in height only when the mean air and soil temperatures exceed 42-44°F. There is a rather loose correlatio...Read more
Leaf extension rates of perennial ryegrass cv. S24 were examined in the field in relation to seasonal changes in soil and air temperature. A technique...Read more
Automatically recording thermocouple sensing elements clipped to potato leaves and thermocouple needles inserted into the midrib of the leaf showed th...Read more
Temperatures were measured in a perennial ryegrass crop in the field and an attempt was made to relate temperature to growth. The instruments used are...Read more
Under isothermal conditions the decrease in air pressure with elevation enhanced potential transpiration by increasing the leaf to air water vapour gr...Read more
Comparisons were made of three micrometeorological models which simulated daily rates of photosynthesis and transpiration in a maize crop. A complete ...Read more
Tehran, the capital of the Islamic Republic of Iran (IRI), is located in the north of the country with a population of about 8.5 million. The populati...Read more
In the early 1990s, birch (Betula pubescens) forests in north-western Norway were damaged by the bud- and shoot-mining larvae of Argyresthia retinella...Read more
The relative rate of increase of leaf area per plant was measured in Vicia faba from May to August. In the early stages of growth, until the leaf area...Read more
Temperatures were measured at four depths in a strip clear-cut black spruce bog to determine the effect of forest canopy removal. Canopy removal had n...Read more