Abstract
Abstract Many Fe sources have been tested to correct Fe chlorosis over the past 35 years, and no single Fe source has been found that is both effective and economical for most crops. Results from many Fe experiments are discussed. Variable results are reported from Fe source studies related to differences in Fe placement, rate, time of application, and weather and soil conditions. While controlling Fe chlorosis by developing more Fe‐efficient cultivars appears more promising, work to develop effective Fe fertilizers should continue. Perhaps the best method to control Fe chlorosis will be a combination of Fe‐efflcient cultivars with the best management practices, and reasonably effective Fe fertilizers.
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