. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. Fig. 618. Root system of a com plant four feet tall. Germination box ready for examination. Notice the contrast n the kfi-nels from ears 1 aud 3; also between 32 and 34. Holdeu, Iowa.) poorly preserved seed certain ears each kernel of which will grow, it should be remembered that the same conditions that have caused other ears of the lot to fail to germinate, have weakened the
. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. Fig. 618. Root system of a com plant four feet tall. Germination box ready for examination. Notice the contrast n the kfi-nels from ears 1 aud 3; also between 32 and 34. Holdeu, Iowa.) poorly preserved seed certain ears each kernel of which will grow, it should be remembered that the same conditions that have caused other ears of the lot to fail to germinate, have weakened the vitality of those that do germinate. They do not germinate so strongly nor produce so well as they would have done had they been better preserved. Some tests of well-preserved seed in comparison with that kept in cribs have shown that the one factor only, of preservation, is responsible for a difference in yield of sixteen or more bushels per acre. The important feature of these tests consists in the fact that the increased production of well- preserved seed is not due to its better germination or a better stand of stalks in the field, but to the fact that the stalks are more vigorous. While a test of the germinating power of each individual ear is very profitable, with a supply of seed con- taining some ears that do not germinate perfectly, it is more profitable to select and preserve the seed in such a way that it will contain no such ears. Of course, as a safeguard, it is advisable to test one hundred or more ears of seed selected and preserved in the best way possible, but as it is usually found that the seed so preserved germi- nates perfectly or nearly so, it is often found use- less to make the test of each ear of the lot. Another very important factor in securing the proper stand of stalks is the grading of the seed ears. They should be selected or graded to a uniform size of kernel, and this is readily done before the ears are shelled. No corn-planter can drop the prop
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