. Botany for agricultural students. Plants. TESTING THE GERMINATIVE CAPACITY OF SEEDS 99 There are a number of genninators on the market, but, if one is not available, a box of moist soil or sand, or moist rags which are rolled up with the seeds within are good genninators when properly handled. {Fig. 93.) A very good germinator is made with two dinner plates and blotting paper as shown in Figure 9^. During the test a temperature suitable for the germination of the kind of seeds involved must be maintained. Some prefer to keep the temperature near that of the soil, so as to more nearly. Fig. 9
. Botany for agricultural students. Plants. TESTING THE GERMINATIVE CAPACITY OF SEEDS 99 There are a number of genninators on the market, but, if one is not available, a box of moist soil or sand, or moist rags which are rolled up with the seeds within are good genninators when properly handled. {Fig. 93.) A very good germinator is made with two dinner plates and blotting paper as shown in Figure 9^. During the test a temperature suitable for the germination of the kind of seeds involved must be maintained. Some prefer to keep the temperature near that of the soil, so as to more nearly. Fig. 93. — Doll rag testers, consisting of moist rags properly labeled and rolled up with the seeds withm. After H. D. Hughes. imitate the soil conditions under which most seeds do not germi- nate so well as they do in germinators. The germinator should be opened each day to note the germinated seeds and to allow the entrance of fresh air, if ventilation is not otherwise provided. At the end of the germinative period, the results are usually ex- pressed in percentages found by dividing the number of germinated seeds by the number in the lot and multiplying by 100. Thus if 190 of a lot of 200 germinated, -^^^^^^^ = 95 per cent. The percentage of germination will vary for different lots and the. 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 Martin, John N. (John Nathan), b. 1875. New York, John Wiley ; London, Chapman & Hall
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1919
