INDEX 
canal losses, 19§ 
drainage, 222 
flood, 17, 403-8 
India, 48 
justification, 43, 193-94, 326-28 
leaching requirement, 223-24, 
251 
permanency, 221, 250 
plant nutrients, 37 
potential, 49, 55, 279, 190-91 
relation to grazing, 184 
return flow, 283-86 
salinity problems, 56-57, 129, 
DDI=DS, PHO, PS eI, Pheyne 
285-88 
sodium factor, 224-25, 281, 282, 
286 
soil characteristics, 35, 403 
United States, 279 
water management, 80-81, 196, 
DSR. O'S 
Israel, Negev desert, 57 
development, 390-408 
acke Res) 1285 129 
Jenkins, D. S., 266, 273 
jjomes, 18, Wa, BEG, sao 
Julander, O., 345, 347 
Funcus acutus, 401 
Funcus maritimus, 394, 399, 401, 
409 
Kalahari desert, 17, 127 
Kangaroo rat, 14-15, 371 
Keck= DE Dr 347 
Kellogg, C. E., 58 
Knowles, P. F., 347 
Kochia indica, 336, 338 
Laboratory of Climatology, 77 
Land capability, concept, 226-27 
Land use, drought risk, 203, 229- 
30 
range lands (see Range) 
449 
relation to grasshoppers and 
locusts, 386-87 
social factors, 229-30 
NKaeleel iENezTEN, OS—A, Aoy/, 
431, 433 
Land values, 325 
Landsberg, H., 152 
Langmuir, I., 301, 307, 311 
anew Dae ia3 
Larfrére, L., 6 
Larrea divaricata, 353 
Larrea tridentata, 344 
Laude, H. M., 345 
Leopold, L. B., 32 
Leptadenia pyrotechnica, 399 
WibbysaVe ress 
Libya, 3 
Local and national committees, 
434 
Locust, 383-89 
Lolium species, 60, 350, 351, 352 
Lolium perenne, 346 
Lolium rigidum, 186 
Madson, B. A., 360 
Maize (Zea mays), 16-17, 348 
Malva species, 398 
Martin We Ba 357; 
Mather, K., 350 
McClellan, L. N., 249, 254 
McKeekan, C. P., 363 
Medicago hispida, 353-54 
Medicago sativa, 338 
Medicago species, 352, 398 
Mediterranean area, 28, 31, 179- 
82 
locust areas, 384 
Meigs, P., 4, 74 
Meliotus species, 338 
Melica californica, 346 
Mesoamerica, 246-47 
Mesophytes, 7-9 
Meteoritic dust, 295-99, 316, 429 
