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Abstract
Manganese chelate sprays at bud formation, first bloom and a split application at bud formation and full bloom, increased vine growth of peas (Pisum sativum L.) Shelled pea yields increased with the following Mn chelate rates and timing: 134 g Mn/ha (1 lb. Mn chelate/acre) at first bloom, 269g Μn/ha (2 lb. Mn chelate/acre) at bud formation and first bloom; and with the split application of 134g Μn/ha at bud formation and 134g Μn/ha at full bloom. Tissue analyses showed that redistribution of foliar applied Mn to the non-sprayed new growth was negligible.
Abstract
A broadcast MnSO4 treatment of 38 Kg Mn/ha resulted in 2½-fold increase in both plant growth and shelled pea yields of ‘Darkskin Perfection’ peas. Pods per plant and peas per pod, 2 components of the yield equation, were reduced by Mn deficiency. Seed treatments of Mn EDTA were not effective in correcting the deficiency.