Leaf analysis as a diagnosis of nutritional deficiency or excess in the soilless culture of lettuce Gonzalo Pérez MeliánAngel Luque EscalonaAbram A. Steiner OriginalPaper Pages: 259 - 267
Effect of soil compaction on root-cation exchange capacity of crop plants B. K. KulkarniN. K. Savant OriginalPaper Pages: 269 - 278
Differential susceptibility of two varieties of cowpea (Vigna unguiculata (L) Walp) to phosphorus-induced zinc deficiency N. M. SafayaBharat Singh OriginalPaper Pages: 279 - 290
Nitrogen fixation and poly-β-hydroxybutyric acid content in bacteroids ofRhizobium lupini andRhizobium leguminosarum W. L. KretovichV. I. RomanovN. G. Fedulova OriginalPaper Pages: 291 - 302
Nitrogen accumulation in kaolin mining wastes in cornwall W. S. DancerJ. F. HandleyA. D. Bradshaw OriginalPaper Pages: 303 - 314
Effects of gypsum on mineral nitrogen status in alkaline soils B. R. SinghS. N. Taneja OriginalPaper Pages: 315 - 321
Characterization of shrinkage cracks in medium black clay soil of madhya pradesh R. B. SharmaG. P. Verma OriginalPaper Pages: 323 - 333
Influence of fungicide treatment on CaCl2-extractable phosphorus and phosphate-solubilizing micro-organisms in soil M. WainwrightF. J. Sowden OriginalPaper Pages: 335 - 345
Comments on the psychrometric determination of leaf water potentialsin situ P. E. ZanstraF. Hagenzieker OriginalPaper Pages: 347 - 367
Labile pool and selective distribution of zinc in soils M. K. SinhaK. S. DhillonS. K. Dhillon OriginalPaper Pages: 369 - 385
Differences between strains of rhizobium in sensitivity to canavanine Thomas E. Weaks OriginalPaper Pages: 387 - 395
Gesaettigte fettsaeuren in boeden von Kaffeepflanzungen Rudolf von HäslerHans Wanner OriginalPaper Pages: 397 - 408
On the movement and distribution of calcium in white cabbage in dependence of the water status H. J. WiebeH. P. SchätzlerW. Kühn OriginalPaper Pages: 409 - 416
Nutrient element accumulation and distribution in an intensively cultured American sycamore plantation Bruce W. WoodRobert F. WittwerStanley B. Carpenter OriginalPaper Pages: 417 - 433
The distribution of potassium, calcium and magnesium in young tomato plants grown in water culture P. D. HumphriesV. G. Devonald OriginalPaper Pages: 435 - 445
Water-table depth and oxygen content of deep peat in relation to root growth ofPinus contorta Robert Boggie OriginalPaper Pages: 447 - 454
Nitrate and ammonium in the rhizosphere of wheat crops and concurrent observations of take-all D. HornbyMargaret E. Brown OriginalPaper Pages: 455 - 471
Soybean growth on fly ashamended strip mine spoils Joseph L. Fail Jr.Zachary S. Wochok OriginalPaper Pages: 473 - 484
Effect of N, K, and P fertilization, N source, and clipping on potential tetany hazard of bromegrass R. F. FollettJ. F. PowerC. A. Klein OriginalPaper Pages: 485 - 508
Evaluation of the size of a plant's root system using its electrical capacitance Oldrich Chloupek OriginalPaper Pages: 525 - 532
A system for studying the effect of nutrient solution temperature on plant growth D. A. HallN. G. Starkey Short Communication Pages: 533 - 535
Effect of nitrogen source on tomato growth on a desert soil containing 95% carbonates: A greenhouse study N. AlbaselJ. NavrotU. Kafkafi Short Communication Pages: 537 - 540
A small pressure chamber for use with plant leaves of small size John RobertsD. F. Fourt Short Communication Pages: 545 - 546
Comment on ‘Spectroscopie infra-rouge de quelques fractions d'acides humiques obtenues sur Sephadex’ J. D. RussellH. A. Anderson Short Communication Pages: 547 - 548