EFFECTS OF HUMUS
ASSISTANCE TO PLANTS The value of abundant humus in the soil as a menus of increasing the supply of available minerals, and thus increasing the plants' resistance to disease, has boon amply demonstrated in tea plantations in the Orient. An examination of the root system of areas of similar tea—one of which liad been treated with humus and the other left unmannred as a control — showed that humus alters the absorbing root system and brings about, the formation of numerous tufts of healthy roots. In practically every instance manuring with humus was followed by improved growth and increased disease resistance. Where artificial manures had been employed, this condition was either absent or only occurred sporadically.
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Bibliographic details
New Zealand Herald, Volume LXXV, Issue 23150, 23 September 1938, Page 5
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118EFFECTS OF HUMUS New Zealand Herald, Volume LXXV, Issue 23150, 23 September 1938, Page 5
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