INDEX 



391 



Limestone, formation of, 43 



home grinding of, 240, 241 



how soils form from 42, 43 



laboratory exercises on, 251 



pulverized, 238 



pulverizers, 240, 241 



quarry, 239 



Limoid, meaning of, 244 

 Line of tile defined, 117 

 Liquid manure, 215 

 Lister, 159 



cultivator, 164 

 Listing, defined, 159, 160 

 Litmus paper, defined, 229 



laboratory exercises on, 251, 252 

 test for acidity, 234 

 Loam, defined, 14 



rotations for, 276 

 Loess soil, defined, 15 



origin and value of, 32 

 Lodging of grain, 64 

 Lump lime, defined, 243 



Magnesia, defined, 30, 31 

 Magnesium, function of, in plants 56 



defined, 30, 31 

 Main (tile), defined, 121 

 Maintaining fertility, 206, 271 

 Mammoth clover for sands, 316 

 Managerial income, defined, 370 

 Manure (barnyard), a quick fertilizer, 216 



affected by age of animal, 215 

 by bedding, 215 

 by feeding, 214 



amount produced by stock, 215 



application to clover fields, 220 



as a fertilizer, 213 



availability of, 216 



bacteria in, 216 



"burning" of, 218 



care of, 216-218 



compost heap, 218 



cow, 214 



defined, 213 



demonstrations on, 223, 224 



differ in fertilizing value, 214 



facts about, 213 



fire-fanging of, 218 



for gardening, 218 



for marsh soils, 200, 300 



for maintaining fertility, 222 



for sands, 310 



for soil improvement, 216, 250 



gypsum for conserving, 218 



hen, 214, 218 j 



hog, 214 



horse, 214 



land-plaster for conserving, 218 



lasting effects of, 221 



leaching of, 216, 222, 350 



light vs. heavy applications, 219 



lime in manure heaps, 219 



liquid, valuable, 215 



loss of ammonia from, 223 



mixing horse and cow, 219 



phosphate with, 220, 221 



not a perfect fertilizer, 221 



open yard vs. stall, 216, 222 



pig, 214 



pits for, 217 



plowing under vs. disking in, 219 



poultry, 214, 218 



prod action of, by stock, 215 



reinforcing, 220-222 



residual effects of, 221 



Manure (barnyard), rock phosphate for, 220- 



sheds for, 217 

 sheep, 214 



solubility of elements in, 210 

 stall vs. open yard, 216, 222 

 storing, 217 

 three-fold value of, 216 

 top-dressing with, 220 

 value of, 213, 214 



vs. mineral fertilizers on marsh, 220, 300 

 winter applications of, 221 

 yard vs. stall, 216, 222 

 Mapping of soils, 22 

 Marble, defined, 39 



dust for liming, 243 

 Marine soils, defined, 15 



origin and value of, 21 

 Marl, defined, 243 

 for liming, 243 

 origin of, 17, 243 

 Marsh, defined, 14 

 soils, 16, 293 



advantages in farming, 293 

 "bogus" spots in, 302 

 clearing and breaking, 295 

 clover for, 304 

 crop for, 302, 305 

 crop rotation, 304 

 drainage of, 117, 294 

 extensive farming on, 306, 307 

 fertilizer tests on, 200, 201, 204, 



298, 300, 303 



fertilizers for, 199, 203, 297-300 

 field studies on, 307 

 frost on, 302, 303 

 home projects on, 307 

 kinds of, 293 

 management of, 293 

 manure for, 300 

 most desirable, 294 

 types of, 293 



of farming on, 306 

 Marsh-border soils, 293 



drainage of, 294 

 Maximum production, 83 

 Meadow, defined, 25 

 Mechanical composition of soil, 14, 15 

 Medium red clover, elements removed by, 62 



for sands, 316 



Metamorphic rocks, defined, 39 

 Mica, defined, 40 

 Micro-organisms, 171 

 Middle-breaker, 160 

 Mineral elements, defined, 30, 33 



removed by crops, 33 

 fertilizers on marsh, 200 

 matter, defined, 5 

 rock-forming, 40 



laboratory exercises on, 45 

 soils, defined, 41 

 Mixed fertilizers, defined, 205 



advantages in using, 209 

 application of, 209 

 determining equivalents, 198, 202 

 expressing equivalents, 198, 202, 205 

 for sands, 313 

 home mixing of, 210, 211 

 use of, 205-208 

 vs. single, 209 

 Moisture, and germination, 49 



conservation and control, 100 

 laboratory exercises on, 105 

 supply on sands, 313 

 Molds, soil organisms, 171 



