Effect of pH on root membrane potentials A. K. HelmyN. PeinemannE. A. Ferreiro OriginalPaper Pages: 253 - 259
Root hair infection and nodulation in lucerne (Medicago sativa L.) as influenced by salinity and alkalinity M. Lakshmi-KumariC. S. SinghN. S. Subba Rao OriginalPaper Pages: 261 - 268
Kaliumernährung der Pflanzen und kaliumdynamik auf kalium-fixierendem Boden A. von AmbergerR. GutserK. Teicher OriginalPaper Pages: 269 - 284
Spectroscopie infra-rouge de quelques acides humiques Jean-René Bailly OriginalPaper Pages: 285 - 302
Physico-chemical changes in sodic soils incubated at saturation N. T. Singh OriginalPaper Pages: 303 - 311
Absorption of magnesium and its influence on the uptake of phosphorus, potassium, and calcium by intact groundnut plants Nand Kumar Fageria OriginalPaper Pages: 313 - 320
No-tillage effects on soil properties and maize (Zea mays L.) production in Western Nigeria Rattan Lal OriginalPaper Pages: 321 - 331
Some observations on the distribution of root activity in apple trees D. Atkinson OriginalPaper Pages: 333 - 342
Effect of seed pretreatments on phosphorus uptake by alfalfa Fayez M. AbdouT. El KobbiaM. El Nennah OriginalPaper Pages: 343 - 348
Effect of fertilization on biomass and nutrient content of fine roots in a beech-birch-maple stand L. O. Safford OriginalPaper Pages: 349 - 363
Effect of water-soluble organic substances from different types of leaf and needle litter on the downward movement of manganese in sandy soil A. S. HadimaniP. Surya RaoK. Raghavendra Rao OriginalPaper Pages: 365 - 372
Movement and retention of Klebsiella aerogenes in soil columns Gabriel BittonN. LahavY. Henis OriginalPaper Pages: 373 - 380
The effect of irrigation on the length, weight, and diameter of lettuce roots H. R. Rowse OriginalPaper Pages: 381 - 391
A new approach towards the designation of phosphorus availability in soils A. K. SachetiS. N. Saxena Short Communication Pages: 393 - 396
The content of scandium, thorium, silver, and other trace elements in different plant species C. T. HorovitzH. H. SchockL. A. Horovitz-Kisimova Short Communication Pages: 397 - 403
Effect of aflatoxin-contaminated groundnut cake on rhizosphere microflora of some vegetable plants P. SubrahmanyamA. S. Rao Short Communication Pages: 405 - 408
Reciprocal growth effects of water and organic matter in soils of partially cut forest stands J. G. IyerB. H. ShawR. C. Dosen Short Communication Pages: 409 - 412
Air temperature control in nitrogen volatilization chambers E. H. HoultE. W. R. BarlowJ. W. McGarity Short Communication Pages: 413 - 416
New method for assessing boron status of the oil palm J. A. RajaratnamJ. B. LowryLaw Ing Hock Short Communication Pages: 417 - 420
Solubility of manganese, iron, and zinc as affected by application of sulfuric acid to calcareous soils J. RyanS. MiyamotoJ. L. Stroehlein Short Communication Pages: 421 - 427
Some effects of humic acid on two different biological systems D. VaughanC. D. BakerL. G. Willoughby Short Communication Pages: 429 - 434
A quantitative assay of insoluble polyvinylpyrrolidone F. DazzoD. Hubbell Short Communication Pages: 435 - 439
Survival of some slow-growing Rhizobium on inoculated legume seed D. F. HerridgeR. J. Roughley Short Communication Pages: 441 - 444
Evaluation of a rapid test for the hidden hunger of zinc in plants R. Snehi DwivediN. S. Randhawa Short Communication Pages: 445 - 451
A study on the comparison of three incubation methods for evaluating mineralization of organic phosphorus in soils B. AhmedA. Islam Short Communication Pages: 457 - 459