Influence of cobalt on nitrogen fixation by medicago

Abstract

1. ARCHBOLD, H. K. 1942. Physiological studies in plant nutrition. XIII. Experiments with barley on defoliation and shading of the ear in relation to sugar metabolisnm Ann. Botany 6: 487-531. 2. BAIN, J. M. 1958. Morphological, anatomical, and physiological changes in developing forms of Valencia orange. Austral. J. Botany 6: 1-24. 3. Br.Aw, R. C. and G. W. TODD. 1960. Photosynthesis and respiration in developing fruits. I. C'402 uptake by young oranges in the light and in the dark. Plant Physiol. 35: 425429. 4. EAKS, I. L. and W. A. LUDI. 1958. Response of orange and lemon fruits to fumigation with ethylene dibromide effective against eggs and larme of the Oriental and Mexican fruit flies. Am. Soc. Hort. Sci. Proc. 72: 297-303. 5. EATON, F. M. and H. E. JOHAM. 1944. Sugar movement to roots, mineral uptake, and the growth cycle of the cotton plant. Plant Physiol. 19: 507518. 6. HusSEIN, A. A. 1944. Respiration in the orange. A study of systems responsible for oxygen uptake. J. Biol. Chem. 155: 201-211. 7. KosKi, V. M. 1950. Chlorophyll formation in seedlings of Zea mays L. Arch. Biochem. 29: 339343. 8. KURSANOV, A. L. 1934. Die Photosynthese gruner Fruchte und ihre abhangigkeit von der normalen Tatigkeit der Blatter. Planta 22: 240-250. 9. TURRELL, F. M. 1946. Tables of surfaces and volumes of spheres and of prolate and oblate spheroids and spheroidal coefficients. University of California Press, Berkeley. 10. WATSON, D. J. and A. G. NORMAN. 1939. Photosynthesis in the ear of barley and movement of nitrogen into the ear. J. Agr. Sci. 29: 321-345.