95 



SLAG EXPERIMENTS 



(Details of the Slags used are given on p. 97.) 



No. 

 of 



Plot 



Treatment of Plot and Quantities 

 per Acre. 



1921 



Yield 



per Acre. 



cwt. 



Series 

 A 



Series 

 B 



Dry Matter 



per Acre. 



lb. 



1922 



Yieltl 



per Acre. 



cwt. 



Series 

 A 



Series Series Series 



BAB 



Dry Matter 



per Acre. 



lb. 



Series Series 

 A B 



Hay. Great Field, 1921 and 1922 



High Grade Slag No. 12, 1170 lb. 

 Open Hearth Slag No. 13, 19251b 



(High Soluble) 



Open Hearth Slag No. 14, 1930 lb 



(Low Soluble) 



Gafsa Phosphate. 750 lb. 

 No Manure ... 



23 6 



20- 1 



25-5 

 25-7 

 23 6 



249 

 278 



1981 

 1669 



2108 

 2262 



275 i2024 12304 



25 1 2016 

 29-2 |1984 



2149 

 2323 



179 



132 



158 

 191 

 163 



168 



200 



264 

 260 

 239 



1154 11130 

 876 11353 



1064 

 1268 

 1140 



1653 



1677 

 1583 



Hay. 



Little Knott Field, 1921 and 1922 



High Grade, High Soluble Slag 

 No. 15, 536 1b 



Low Grade, High Soluble Slag 

 No. 16, 1113 lb 



High Grade Slag No. 17, 52Z lb. .. 



High Soluble Slag No. 18, 1113 lb 



Low Soluble Slag No. 19, 1104 lb 



Control. No Manure 



Control. No Manure 



13-9 



16 8 

 171 

 15-7 

 14-5 

 15-7 

 161 



1342 



1602 

 1650 

 1508 

 1386 

 1509 

 1542 



143 



171 

 15-2 

 150 

 14'8 

 168 

 154 



Hay. Little Knott Field, 1922 



1 High Grade, High Soluble Slag No. 15, 536 lb. 



3 Low Grade, High Soluble Slag No. 16, 1113 lb. 



4 High Grade Slag No. 17, 522 lb 



6 High Soluble Slag No, 18, 1113 lb. 



7 Low Soluble Slag No. 19, 1104 lb. 



2 Control. No Manure. 



5 Control. No Manure. 



8 Gafsa Phosphate, 422 lb 



9 I Nauru Phosphate, 280 lb. 



135 



12 9 

 128 

 132 

 131 

 132 



13 8 

 226 

 20.9 



1139 



1378 

 1198 

 1117 

 1184 

 1308 

 1233 



1047 

 1067 

 1005 

 1020 

 1070 

 1086 

 1083 

 1867 

 1645 



Hay. Great Field, 1922 



HL. 



High Soluble, Low Grade Slag No. 1, 872 lb. 

 High Soluble, Low Grade Slag No. 1, 872 lb. 

 Low Soluble, Low Grade Slag No. 2, 872 lb. 

 Low Soluble, Low Grade Slag No. 2, 1225 lb. 



Gafsa Phosphate, 347 lb. 



Gafsa Phosphate 174 lb. Low Soluble, Low 



Slag No. 2, 612 lb. 



Control. No Manure 



1113 



1741 

 1197 

 1600 

 1399 



1499 

 1119 

 1524 

 1534 



Hay. Great Field, 1922 



ic 



2C 

 3C 

 4C 

 5C 

 7C 

 7D 

 8C 

 8D 

 C 

 D 



High Soluble Slag No. 1, 872 lb 

 Low Soluble Slag No. 2, 1225 lb. 

 Gafsa Phosphate, 347 lb. 

 Tunisian Phosphate, 336 lb. 

 Florida Phosphate, 292 lb. 

 Nauru Phosphate, 263 lb. 



Nauru Phosphate Low Grade Slag No. 8, 411 lb. 

 Control. No Manure 



165 

 187 

 188 

 160 

 15 8 

 152 

 15-5 

 154 

 200 

 109 

 157 



1095 

 1301 

 1284 

 1086 

 1042 

 1020 



985 

 1012 

 1287 



730 

 1013 



