11. GWIRTSMAN, J., R. MAVRODINEAU, AND R. R. COE. 1957. Determination of fluorides in plant tissue, air, and water. Anal Chem. 29: 887-92. 12. HANDLEY, R. AND R. OVERSTREET. 1961. Uptake of calcium and chlorine in roots of Zea mays. Plant Physiol. 36: 766-69. 13. MACINTIRE, W. H. 1951. Report on fluorine. The direct double distillation procedure for the determination of the fluorine content of ...

Variation in the performance of 20 genotypes of Polygonurn pensylvanicum under two nutrient treatments was studied in a garden experiment. Nutrient fertilization enhanced vegetative biomass and fruit biomass production, but did not result in significant genotype-environment interactions, suggesting that nutrient variation of the range used in the experiment has little potential as a microevolut...

Since the biological effects of maleic hydrazide (MH) were first described by SCHOENE and HOFFMANN (4), a great many papers have appeared describing the effects of that compound on growth and flowering. NAYLOR (3) sprayed tobacco, maize and cocklebur with various concentrations ranging from .025% to .2%o and obtained either suppression or delay of visible flowering. WHITE and KENNARD (5) delaye...