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University of Kentucky materials are on ExploreUK. This item: Image 21 of Annual report. 1905.

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Image 21 of Annual report. 1905

Part of Kentucky Agricultural Experiment Station

zi' · 1 ta 4: Bulletin. N0. 118. i ° i only standard varieties. The variety of corn which will produce j I the largest yields in a given locality is usually that variety _ which has grown for the longest time in‘ the same latitude and under the same soil and climatic conditions. I Every one who has grown corn knows how readily it “runs l out" or degenerates. Plant breeders are agreed that the most I potent cause for this degeneracy in corn is inbreeding. To avoid this it is best to select ears- from different portions of the field, and these ears are to be selected at as great a distance from each E . other as possible. Corn being a plant that scatters its pollen l freely to the wind is subject to a great many crosses and is thus . i guarded by nature from close inbreeding. 1 The extent of the injury to seed corn that is pollinated by the pollen from barren stalks is not yet fully known. We be- lieve, however, that the number of barren stalks is dependent largely upon the number of stalks to the hill and the soil and climatic conditions, together with the variety of corn grown. Q Southern corn, that is the tall, one-ear-to—the-stalk variety, will I have more barren stalks when thickly drilled in the row than l will com from the North. i j · There are other lines of improving corn aside from those .§ pursued by the agriculturist. It is thought the percentage con- tent of nitrogen and fat in corn may be increased by laboratory methods of selection, that is by making chemical analyses of g kernels from any number of ears and selecting those ears for l seed whose kernels show the highest percentage of nitrogen or fat. No one variety of corn possesses all of the qualities that are desired by farmers. That variety which will give the largest · yield of shelled grain is generally the most desirable. Stock feeders prefer a variety that will yield a large number of small ears. The small ear is much more easily eaten by cattle and the waste is less, unless the feeders are followed by hogs. Too much stress cannot be laid upon the importance of l tf 1 planting only those standard varieties that have been thoroughly jj; ·

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