This journal provides immediate access to some articles. Volume 29(1); January 1954 Articles The Metabolism of Nitrogenous Compounds by Sunflower Crown Gall Tissue Cultures. PMCID: PMC540448 Auxin Inactivation and Its Relation to Leaf Drop Caused by the Fungus Omphalia Flavida PMCID: PMC540449 Direct Chemical Proof of Ethylene Production by Detached Leaves PMCID: PMC540450 Metabolism of Sucrose and Related Oligosaccharides by Spores of the Fungus Myrothecium Verrucaria. PMCID: PMC540451 Peanut and Oil Palm Foliar Diagnosis Interrelations of N, P, K, Ca, Mg. PMCID: PMC540452 The Respiration of the Pea Plant. Oxidation of Hexose Phosphate and Pentose Phosphate by Cell-free Extracts of Pea Leaves. PMCID: PMC540453 Effects of Shade and Partial Defoliation on Carbohydrate Levels and the Growth, Fruiting and Fiber Properties of Cotton Plants. PMCID: PMC540454 Respiration of Maize Grain. PMCID: PMC540455 Studies in Plant Metabolism. III. Absorption, Translocation and Metabolism of Radioactive 2,4-D in Corn and Wheat Plants. PMCID: PMC540456 Inhibition of Growth of Chlorella Pyrenoidosa by Beta-emitting Radioisotopes. PMCID: PMC540457 Effect of 2,4-Dichlorophenoxyacetic Acid on Photosynthesis and Respiration PMCID: PMC540458 Organic Acid Metabolism and Ion Absorption in Roots PMCID: PMC540459 Zinc Content of Bean Plants in Relation to Deficiency Symptoms and Yield PMCID: PMC540460 The Influence of Cobalt and Sugars upon the Elongation of Etiolated Pea Stem Segments PMCID: PMC540461 Applicability of Poiseuille'S Law to Exudation of Oleoresin from Wounds on Slash Pine PMCID: PMC540462 The Effects of Three Levels of Magnesium on the Nutrient-Element Composition of two Inbred Lines of Corn and on their Susceptibility to Helminthosporium Maydis PMCID: PMC540463 Auxin Relationships of the Rice Coleoptile PMCID: PMC540464 News and Notes PMCID: PMC540471 Brief Papers: An Improved Infiltration Series for Studying Stomatal Opening as Illustrated with Coffee PMCID: PMC540465 Studies on the Nitrogenous Nutrition of Rice PMCID: PMC540466 The Inhibiting Effect of Root Tips on the Elongation of Excised Pisum Epicotyls Cultured in Vitro PMCID: PMC540467 Leaf and Air Temperatures under Freezing Conditions PMCID: PMC540468 Some Observations on the Reduction of 2,3,5-Triphenyltetrazolium Chloride in Plant Tissue as Influenced by Mineral Nutrition PMCID: PMC540469 The Extraction and Colorimetric Estimation of Indole-3-Acetic Acid and Its Esters in Developing Corn Kernels PMCID: PMC540470 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||