. Bulletin. 1901-13. Agriculture; Agriculture. 60 MISCELLANEOUS PAPERS. found to be the case, and several -train- have been produced in this way by saving seed from healthy plants in the worst diseased areas. The seed of the best of these resistant strains i- distributed with this circular, the- seed having been grown by special arrangement expressly for the Department of Agriculture. Other selections made by the Department or under it- direction are also being grown and tested, and will be used for future distributi in. The Rivers cotton was originated in cooperation with the Depart- ment of
. Bulletin. 1901-13. Agriculture; Agriculture. 60 MISCELLANEOUS PAPERS. found to be the case, and several -train- have been produced in this way by saving seed from healthy plants in the worst diseased areas. The seed of the best of these resistant strains i- distributed with this circular, the- seed having been grown by special arrangement expressly for the Department of Agriculture. Other selections made by the Department or under it- direction are also being grown and tested, and will be used for future distributi in. The Rivers cotton was originated in cooperation with the Depart- ment of Agriculture by Mr. E. L. Rivers, James Island, S. C, who in 1899 saved the seed of a single plant which had survived the dis- ease, while all surrounding plants had been killed. This seed Mr. Rivers planted in a single row in a badly infected area. The result is shown in the accompanying illustration. In the resistant row not a. Fig. 6.—Kowoi Rivers Sea Island cotton in wilt-infected licld. planted with rmvs oi ordinary Sea Island cotton. single plant died, while the adjoining rows "planted with ordinary seed were almost totally destroyed. Sufficient seed was obtained from this row to plant an acre the next year (1901). This land was also infected with the cotton wilt, but only two or three plants became affected, showing the great resistance of the new variety, In 1902, 15 acres were planted. This land was badly infected with wilt and previous crops had been nearly destroyed in portions of the field, so that the land had been abandoned for cotton. The Rivers cotton proved a- resistant here as in the previous yeai*s. An occasional plant became diseased and was pulled up, but the tield as a whole was perfectly healthy and produced a large crop. These three successful trials of this variety, corroborated by numer- ous experiments carried on by the Department of Agriculture with. Please note that these images are extracted from scanned page images that may have been digital
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