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93 > Image 93 of Annual report. 1906

Part of Kentucky Agricultural Experiment Station

56 Bulletin N0. 125. I ( _ its check, but the difference is so very small that it cannot be re- (_ garded as of consequence when the results of the tests of alfalfaand ` A soy beans are considered at the same time. { A Attention is directed to the great difference of yield between 5 i clover and alfalfa, sown in the same soil and at about the same * time. If all our tests of alfalfa had proved as satisfactory as those { V * made in the spring of 1905 we should. recommend it without any . A _ reservation as a better plant for Bluegrass Kentucky than red clover. Our first tests were made on land entirely unadapted to the plant -_ and during seasons somewhat unfavorable to it. The later ones were on what is perhaps average bluegrass land, and, as will _' be seen by the tables, have done much better. = Alfalfa is certainly worthy of trial by Kentucky farmers. Our z . plots, four years old this spring, appear to be good for another four . years, and may last longer., ` Cultures Used o_n Poor Soils. _ ii But it has sometimes been said, "You cannot expect cultures to show up well on land alreadywell supplied with combined nitro- gen," as was the case in thg plots of our tables, 2, 3, and 4. t On March 10, 1905, some tests of alfalfa were started in flower _ pots filled with ordinary building sand. It was not sterilized, and the plants after coming up were watered from a hydrant. To l prevent splashing and thus conveying material from pot to pot, Y treated and untreated pots were isolated by fences of glass. The j l results should under these conditions, approach results to be ob- _ ; tained by the use of cultures on poor land in field tests. Eight pots (1 a, 1 b,'3 a, 3 bg 5 a, 5 bg '7 a, 7b;) wereplanted . with seed treated, according to directions with the package, with all `_ the ingredients of a dry culture bought of ia local seedsman, but - evidently coming originally from West Chester, Pennsylvania. iv When examined, the average height of the plants was 15.44 inches, and the average weight of the dry plants, 5.01 grams. ? Eightsimilar pots (2 a, 2 b; 4 a, 4b; 6 a, Gb; 8 a, 8b;) were planted with seed treated only with the chemicals of the same cul- i ture. The average height of the plants was 19.25 inches, and the ` average weight per pot of the dry plants was *7.51 grams. i