Premium
CARBON DIOXIDE IN RELATION TO GLASSHOUSE CROPS
Author(s) -
OWEN O.,
SMALL T.,
WILLIAMS P. H.
Publication year - 1926
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1926.tb04297.x
Subject(s) - carbon dioxide , crop , germination , biology , agronomy , greenhouse , greenhouse gas , carbon fibers , horticulture , environmental science , ecology , materials science , composite number , composite material
SUMMARY1 The rate of germination of tomato seeds is practically unaffected when the seed boxes are exposed to atmospheres enriched with carbon dioxide. 2 Increases of over 20 per cent, in marketable tomato crops result when the plants are subjected to atmospheres containing 0.6 per cent, of CO 2 for 1 or 2 hours daily. 3 Cucumbers heated with atmospheres containing 0.9 per cent. CO 2 for 1 hour daily showed an increase in crop of 16 per cent. 4 In the case of the 1925 tomato crop, and to a less degree of the 1924 crop, a considerable part of the increased picking is manifested in June, when market prices are high. 5 In its effect on the crop carbon dioxide generated slowly at the soil surface is not as beneficial as the gas when generated quickly and mixed with the air surrounding the plants. 6 Plants grown in houses which have been used for carbon dioxide experiments show an increased susceptibility to infection by Colletotrichum atramentarium.7 When carbon dioxide is generated quickly in a house an appreciable loss of this gas always occurs. This loss appears to be independent of temperature and varies directly with the amount of ventilation. 8 Experiments with apparatus devised for the use of carbon dioxide on a commercial scale were unsuccessful owing to the inadequacy of the apparatus.