430 EXPERIMENT STATION EECOED. 



Results of variety and cultural tests with potatoes show that " 25 varieties 

 of potatoes have been tested since 1908 and most of these have given fair 

 yields during that time. The variety White Peerless has proved most satis- 

 factory from the standpoint of both yield and keeping qualities. The cultural 

 tests with potatoes indicate that sets placed about 24 in. apart in rows 3 ft. 

 apart will give the best results. The depth of planting seems to depend upon 

 the condition of the soil at planting time." Potato yields ranged from 4 to 138 

 bu. per acre. The source of seed, whether dry-land or irrigated, seems to 

 have little effect on the yield. Small seed was better than large seed, and 

 freshly cut seed slightly better than calloused seed. 



The Clermont County experiment farm (Ohio Sta. Bui. 275 {191^), pp. 

 S09-316). — This report gives an outline of the general plan of management and 

 results of fertilizer tests in rotations with corn, soy beans, wheat, and clover; 

 of variety tests with corn and oats in 1913 ; and some results of a 5-year rota- 

 tion conducted for 20 years at Wooster. 



In regard to the fertilizer treatments in a 4-year rotation at Clermont it is 

 noted " that the treatment has produced an immediate and marked increase in 

 yield, and that the complete fertilizer, containing nitrogen as well as phosphorus 

 and potassium, has produced not only the largest total increase but also the 

 largest net gain, notwithstanding the greatly increased cost of the fertilizer." 



The Miami County experiment farm (Ohio Sta. Bid. 274 {19H), pp. 289- 

 307, figs. 2). — This is a report of progress (E. g. R., 29, p. 31), and gives data 

 on rotations and fertilizer experiments that include corn, oats, wheat, clover, 

 soy beans, and tobacco ; variety tests with com, wheat, oats, tobacco, and 

 soy beans; and feeding trials with pigs (see p. 471). 



The data show a much reduced yield the third year on land growing corn 

 continuously as compared with land cropped in rotation. The fertilizer tests 

 indicate a need of potash and phosphorus. 



The Paulding County experiment farm {Ohio Sta. Bill. 273 (1914), pp. 278- 

 288, pis. 2). — This is a report of progress (E. S. R., 29, p. 137) and gives data 

 on fertilizer tests in rotations that include corn, oats, wheat, clover, soy beans, 

 and sugar beets, and results of variety tests of wheat, corn, oats, and soy 

 beans for 1913. 



Report on grass seed mixtures, 1907—1913, W. M. Findlay (North of Scot. 

 Col. Agr. Bui. 18, 1914, pp. 75). — From grass seed mixtures sown at many cen- 

 ters the following conclusions were drawn: 



" There was no direct relation between the weight of hay produced and the 

 quantity of perennial rye grass sown. A small quantity (say 4 bu.) of seed 

 of perennial rye grass produced nearly as much of this grass in the hay as a 

 larger quantity (14 bu.). This was due to the greater stocking power and to 

 the stalks being bigger. When a large quantity of perennial rye grass was 

 used, the pasture, during the second and third years, was neither abundant 

 nor prolonged, and pluff grass was encouraged. Neither a small nor a large 

 quantity of Italian rye grass, as part of a seed mixture, increased the hay 

 crop. When the conditions suited it, it competed too severely against red 

 clovers ; when the conditions did not suit it, the quantity in the hay was very 

 small. 



" The quantity of cocksfoot and timothy in both hay and pasture was in- 

 creased by increasing the seeding (up to a certain point) and by reducing the 

 quantity of perennial rye grass. Meadow fescue was not able to compete 

 against rye grass the first year or against cocksfoot and timothy the second 

 year. Tall oat grass tended to increase the hay crop, but was not a success in 

 the pasture. Rough-stalked meadow grass had no influence on the hay. Al- 

 though the plants were small, they helped to fill up spaces in the pasture. 



