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9 > Image 9 of Annual report. 1909

Part of Kentucky Agricultural Experiment Station

, Kentucky Agricultural Experiment Station. ix - In the soil work, Messrs. Foerste and Jones outlined the two principal types of soil in Breckinridge and Meade Coun- ties and worked carefully over the Central City and Madi- sonville quadrangles of the United States Survey, including parts of Hopkins, McLean, Muhlenberg and Ohio Counties, and Mr. Jones has nearly completed soil maps of these T areas. He has under experiment in the Station greenhouse 48 four-gallon pots of soil and 17 two-gallon pots, in wheat, tobacco and clover, from these areas, in addition to the series of last year, which are being continued. Mr. Jones _ is at work, also, in the Station Laboratory, upon mechani- cal analyses of soil samples collected by him. The chemical work on soils in connection with the pot experiments has been regarded as Adams Fund work, as we have in view the study of the availability of potash and phosphoric acid in the soils of the various geological forma- tions and in soil of the same type, under different conditions and as affected by cultivation. Accuracy of chemical analysis is indispensable in this work and we have devoted much Sl time to study of the methods of analysis required. Some progress has been made in this line, but our success in , determining minute quantities of potash in soil solutions has not been such as we would desire, and we think this work should be continued. The analyses of tobacco leaf and stalk were made to ' _ determine the quantity of mineral substances removed by this crop from the soil. These are related to the soil work, as most of these samples were from the fertilizer plots of the tobacco experiment in Christian County. The results, contrary to our experience at the Station farm, do not show any very marked difference in the relative amount of the mineral substances corresponding to difference in the fer- tilizers applied. The grasses and forage plants analyzed were mostly from the experimental plots at Hindman and will afford a comparison between the plants grown on that poor soil and C those grown on the rich soil of the Experiment Station farm.