The Bulletin. 27 



this year, on which these tests were located, had been in crimson 

 clover the past two years, but with only a fair growth of this legume 

 each year. 



CONCLUSIONS. 



As stated for cotton, the results on corn will only justify the draw- 

 ing of tentative conclusions. 



Taking the compiled data contained in Table XIII, which em- 

 braces one year's result at the Edgecombe farm and three years' 

 results at the Iredell farm, the following tentative deductions may be 

 drawn relative to the growth of com under conditions as represented 

 by those under which these tests were made : 



(1) That fertilization of corn with commercial fertilizers or fer- 

 tilizing materials, does not pay as well as it does for cotton. 



(2) That corn generally responds in profitable increased yields 

 to applications of nitrate of soda, on both sandy loam and clay soils. 



(3) That 200 pounds of Peruvian guano per acre is a more profit- 

 able application than 400 pounds per acre. 



(4) That fertilization of corn pays better on the red clay soil 

 of the Iredell farm than on the sandy loam soil of the Edgecombe 

 farm. 



III. Basic Slag Tests with Cotton and Corn. 



PLAN of experiments. 



These tests (see Tables XIV and XV) were conducted on one- 

 tenth acre plats at both the Edgecombe and Iredell farms, for the first 

 time during the past year. The tests were planned to study the rela- 

 tive value of Basic or Thomas slag as a phosphatic fertilizing mate- 

 rial for both cotton and corn. Permanent plats have been set aside 

 for this work in both localities, and it is proposed to run the different 

 tests on the same plats a number of years in order to study the direct 

 and residual actions on these two crops of the phosphoric acid and lime 

 in this material. Erom one year's results no deductions will be 

 attempted. The cotton and com were planted, reduced to a stand and 

 cultivated in the same general way as were the Peruvian guano and 

 nitrate of soda tests. The fertilizer was applied to the cotton plats 

 May 1 and May 2, and to the corn plats May 14 and May 11 ; while 

 the cotton was planted May 2 and May 3, and the com May 15 and 

 May 11 at the Edgecombe and Iredell farms respectively. 



These tests were located at the Edgecombe farm on the same char- 

 acter of soil which had received the same treatment and grown the 

 same crops for the past four or five years as that used for the Peruvian 

 guano tests in 1906. 



