Abstract
The investigtions recorded constitute a rough survey of the influence of atmospheric impurities upon the growth of plants. They do show clearly that this influence, even outside the towns, may under certain conditions have appreciable bearing upon farm economy. The atmosphere in and around a large industrial city such as Leeds is relatively highly charged with impurities, many of which exert a marked deleterious effect upon plant growth. The impurities are most abundant in the industrial quarters of the city, but are disseminated over very large areas, especially in the direction of the prevailing winds. The rain falling through such a polluted atmosphere becomes notably rich in suspended matters, chlorides, sulphates (often also other sulphur compounds, such as SO/sub 2/), nitrogenous compounds (notably ammonia) and free acid. The suspended matters in the air impede the growth of plants not only by their deposition upon the leaves and consequent hindrance to the free passage of gases into and out of the leaves, but also by reducing the intensity of illumination of the leaves, such reduction amounting in the worst case investigated to fully 40 per cent of the maximum light available. The presence of free acid in the atmosphere exercises a
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Citation Formats
Crowther, C, and Ruston, A G.
Nature, distribution, and effects upon vegetation of atmospheric impurities in and near an industrial town.
United Kingdom: N. p.,
1911.
Web.
doi:10.1017/S0021859600001453.
Crowther, C, & Ruston, A G.
Nature, distribution, and effects upon vegetation of atmospheric impurities in and near an industrial town.
United Kingdom.
https://doi.org/10.1017/S0021859600001453
Crowther, C, and Ruston, A G.
1911.
"Nature, distribution, and effects upon vegetation of atmospheric impurities in and near an industrial town."
United Kingdom.
https://doi.org/10.1017/S0021859600001453.
@misc{etde_7204681,
title = {Nature, distribution, and effects upon vegetation of atmospheric impurities in and near an industrial town}
author = {Crowther, C, and Ruston, A G}
abstractNote = {The investigtions recorded constitute a rough survey of the influence of atmospheric impurities upon the growth of plants. They do show clearly that this influence, even outside the towns, may under certain conditions have appreciable bearing upon farm economy. The atmosphere in and around a large industrial city such as Leeds is relatively highly charged with impurities, many of which exert a marked deleterious effect upon plant growth. The impurities are most abundant in the industrial quarters of the city, but are disseminated over very large areas, especially in the direction of the prevailing winds. The rain falling through such a polluted atmosphere becomes notably rich in suspended matters, chlorides, sulphates (often also other sulphur compounds, such as SO/sub 2/), nitrogenous compounds (notably ammonia) and free acid. The suspended matters in the air impede the growth of plants not only by their deposition upon the leaves and consequent hindrance to the free passage of gases into and out of the leaves, but also by reducing the intensity of illumination of the leaves, such reduction amounting in the worst case investigated to fully 40 per cent of the maximum light available. The presence of free acid in the atmosphere exercises a detrimental influence upon plant growth: (a) by direct action upon the leaves indirectly by reducing the activity not only of the necessary ammoniacal fermentation of the soil humus, but even more of the beneficial nitrifying and nitrogen-fixing organisms in the soil. The experiment with the perennial meadow grass, timothy, indicates that with the continued application to the soil of acid rain the produce becomes distinctly poorer in protein and richer in crude fiber, and consequently less nutritious.}
doi = {10.1017/S0021859600001453}
journal = []
volume = {4}
journal type = {AC}
place = {United Kingdom}
year = {1911}
month = {Jan}
}
title = {Nature, distribution, and effects upon vegetation of atmospheric impurities in and near an industrial town}
author = {Crowther, C, and Ruston, A G}
abstractNote = {The investigtions recorded constitute a rough survey of the influence of atmospheric impurities upon the growth of plants. They do show clearly that this influence, even outside the towns, may under certain conditions have appreciable bearing upon farm economy. The atmosphere in and around a large industrial city such as Leeds is relatively highly charged with impurities, many of which exert a marked deleterious effect upon plant growth. The impurities are most abundant in the industrial quarters of the city, but are disseminated over very large areas, especially in the direction of the prevailing winds. The rain falling through such a polluted atmosphere becomes notably rich in suspended matters, chlorides, sulphates (often also other sulphur compounds, such as SO/sub 2/), nitrogenous compounds (notably ammonia) and free acid. The suspended matters in the air impede the growth of plants not only by their deposition upon the leaves and consequent hindrance to the free passage of gases into and out of the leaves, but also by reducing the intensity of illumination of the leaves, such reduction amounting in the worst case investigated to fully 40 per cent of the maximum light available. The presence of free acid in the atmosphere exercises a detrimental influence upon plant growth: (a) by direct action upon the leaves indirectly by reducing the activity not only of the necessary ammoniacal fermentation of the soil humus, but even more of the beneficial nitrifying and nitrogen-fixing organisms in the soil. The experiment with the perennial meadow grass, timothy, indicates that with the continued application to the soil of acid rain the produce becomes distinctly poorer in protein and richer in crude fiber, and consequently less nutritious.}
doi = {10.1017/S0021859600001453}
journal = []
volume = {4}
journal type = {AC}
place = {United Kingdom}
year = {1911}
month = {Jan}
}