. Annals of applied biology. Biology, Economic; Biochemistry. Winifred E. Brenciiley 153 above tliat limit the plants are unable to make full use of their supply. This, then, may be regarded as an argument for giving crops a fair amount of room in order that they may obtain sufficient food, though too thin planting may be wasteful as the plants may be unable to make the best use of the available food. grams. Fig. 4. Average dry weights of ten barley plants grown in water cultures in nutrient solutions of different concentrations. Dotted lines show limits of probable error. F. Solutions changed
. Annals of applied biology. Biology, Economic; Biochemistry. Winifred E. Brenciiley 153 above tliat limit the plants are unable to make full use of their supply. This, then, may be regarded as an argument for giving crops a fair amount of room in order that they may obtain sufficient food, though too thin planting may be wasteful as the plants may be unable to make the best use of the available food. grams. Fig. 4. Average dry weights of ten barley plants grown in water cultures in nutrient solutions of different concentrations. Dotted lines show limits of probable error. F. Solutions changed every four days. 0. Solutions changed once during experiment. N. Solutions never changed. B. Light as a factor in competition. Although it is always stated that overcrowding of plants leads to great competition for food and light, still little or nothing is definitely known as to the extent to which competition for light affects the growth of plants. As overcrowding increases, both factors come more and more into play, and under ordinary cultural and experimental conditions it is impossible to separate the two and to attribute any proportional action to one or the other. The first experiments described above (pp. 144-151) Ann. Biol, vi « 11. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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