. The effects of artificial shading on plant growth in Louisiana. Gardening in the shade; Growth (Plants); Agriculture. EFFECT OF DIFFERENT LIGHT INTENSITIES ON PLANTS. 19 At the end of the experiment no consistent effect could be noted which could be ascribed to the use of the fan. The best growth was found between n/5 and n/2 light, a marked decrease being noticeable in full light. In the shades no great reduction in growth occurred until the light was reduced to n/15, and even at the end of the experi- ment plants were alive and in good condition in n/93, although they had produced no leave
. The effects of artificial shading on plant growth in Louisiana. Gardening in the shade; Growth (Plants); Agriculture. EFFECT OF DIFFERENT LIGHT INTENSITIES ON PLANTS. 19 At the end of the experiment no consistent effect could be noted which could be ascribed to the use of the fan. The best growth was found between n/5 and n/2 light, a marked decrease being noticeable in full light. In the shades no great reduction in growth occurred until the light was reduced to n/15, and even at the end of the experi- ment plants were alive and in good condition in n/93, although they had produced no leaves aside from the cotyledons. Cotton, therefore, showed more tolerance of shade than any of the other plants used in these experiments. CORX. Corn showed considerably more tolerance of shade during the early portion of the experiment than either mustard, lettuce, or Fig. 10.—Relative sizes of cotton plants 50 days after germination. The numbers correspond to those of the shades and the letters indicate the two beds in the experiment. (Traced from photograph.) probably as a result of the larger seed and consequent greater food supply. At the end of 30 days plants were still living in n 93 light, and in bed A plants remained alive in n/15 until the end of the experi- ment, or 50 days. On the whole, however, the best plants were pro- duced in the strongest light (Table VII), and in this respect the results with corn differ from those with cotton, potato, radish, lettuce, and mustard. While the plants were tallest in n/7 to n/2 light, the stems had the greatest diameter in the strongest light. The most interesting fact brought out in the case of com was that although the plants grew fairly well with as slight illumination as n/15, and although with a light intensity of n/93 plants maintained themselves in the bed with the fan for 30 days, all plants had disappeared from the portion of the beds receiving this intensity of light before the end of the experiment, and in the
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