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21	Influence of Ironite and Phosphorus on Yield of Oats and Content of Lead and Arsenic at Different Stages of Growth Eberhardt, P. J., Clark, L. J. 10 1900 (has links) Ironite and phosphorus were applied to plots seeded to oats to find their effect on crop yield. The effects of both additives were positive, even though not statistically at the 90% level of confidence. The concern for lead and arsenic uptake by plants was also addressed as soil and plant samples were tested for these two elements. The results showed that no more arsenic nor lead were present in oat plants on Ironite plots than from check plots, as they approached maturity. Agriculture -- Arizona Grain -- Arizona Forage plants -- Arizona Barley -- Arizona Wheat -- Arizona Barley -- Fertilizer management Wheat -- Fertilizer management