695 



(3) T\yo eye cuttings from mediiim sized tubers planted at a distance 

 of 12 inelies, ,or quarter pieces planted IS inelies apart, will generally 

 insure the most iirofitable returns. 



(4) There was no decided difference in results from apjilying the fer- 

 tilizer above or below the seed. 



(5) A mixture of superphosphate, potash, and nitrate of soda or 

 cottou-seedmeal gave the only profitable increase in yield. Two appli- 

 cations of nitrate of soda, one at the time of planting, the other about 5 

 or G weeks later, produced more favorable results than one application; 

 but cotton seed meal should be apjdied at the same time as the other 

 fertilizers. 



(0) As a fertilizer for potatoes a mixture of 400 pounds super])hos- 

 phate, 250 pounds muriate of potash, 400 pounds nitrate of soda, and 

 800 pounds cotton seed meal is suggested. 



Sweet pofafoes (pp. 174-182), — General statements are made regard- 

 ing the culture of sweet potatoes, and fiehl experiments are described 

 in planting at different distances, with hill m. flat culture, with small vs. 

 large seed, and with fertilizers. A previous report on experiments with 

 sweet potatoes may be found in Bulletin No. 11 of the station (see Exi^eri- 

 ment Station Kecord, vol. ii, j). 555). 



The yields for 2 varieties planted at distances of 1.5 by 3.5, 2 by 3.5, 

 2.5 by 3.5, and 3 by 3.5 feet are given in a table, those for the two inter- 

 mediate distances being the largest. 



In the case of 2 varieties fiat culture gave considerably larger 

 yields than hill culture, but for a third variety hill culture gave slightly 

 the best results. Where large and small tubers were used for seed there 

 were no great differences in the yields. 



The tabulated results of an experiment in which muriate of potash or 

 kainit was used in different comljinations with superphosphates and 

 cotton-seed meal, do not indicate in which form potash may be most 

 profitably applied to sweet potatoes. 



Notes and tabulated data are given for an experiment in which cotton- 

 seed meal, nitrate of soda, superphosphate, kainit, and muriate of i^ot- 

 ash, used singly and in different combinations, were compared with 

 stable manure and with no manure on a " stiff, red sandy clay soil with 

 clay subsoil," on which Southern Queen and Pumpkin Yam potatoes 

 were planted. The best results were obtained with complete fertilizers, 

 but there were indications that the Southern Queen variety required 

 relatively more nitrogen and less potash than the other. Nitrate of 

 soda was nufbh more effective than cotton-seed metW. 



Tabulated data are given for a test of 9 varieties of sweet potatoes. 

 The largest yields were produced by Pumpkin Yam, Southern Queen, 

 Bermuda Sweet, and Georgia Yam. 



Tomatoes (pp. 182-100). — Tests of varieties and an experiment with 

 fertilizers are reported. Brief descriptive notes are given on 10 new 



