Relationship between Tissue Zinc Levels and Maturity Period of Field Beans
1969
Boawn, Louis C. | Rasmussen, P. E. | Brown, J. W.
The number of days from bean planting to harvest maturity is related to the zinc concentration of either leaf tissue or total top at or prior to bloom stage. In two geographical areas and with two bean varieties, optimum maturity period was associated with approximately 20 ppm or more zinc in these tissues. Below 20 ppm, the number of days required to reach maturity increases rapidly. With zinc levels below 15 ppm there was an increase of up to 30 days in the time required to reach maturity.
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