In most cases, the answer is yes since this will reduce at least one stress on the beans. If the beans are under extreme drought stress and are possibly dying, there may not be enough leaf area exposed to adsorb adequate amounts of foliar-applied manganese. However, where drought has contributed to the appearance of the problem but the beans still show enough leaf area for a foliar application to be effective, manganese should be applied to alleviate that portion of the stress. Often, the application of foliar manganese will make the difference in whether you obtain a soybean crop. As with many problems, you need to know why the problem exists and if manganese deficiency is really the problem.
Compaction is another problem that can induce manganese deficiency.
In this case although you may get temporary relief with foliar-applied manganese, there may not be much yield increase because the compaction restricts root uptake of many nutrients and not just manganese. Always try to learn what are the underlying factors contributing to the problem. Pesticide and CCA credits awarded. The field day is designed to improve diagnostic skills and will focus on commercial vegetables and fruit. The Novartis Technology Van will be available for viewing.