Evaluation location: Texas, United States
Accessions from the Cowpea Core Collection were evaluated for their relative degree of resistance/susceptibility to Iron Deficiency Chlorosis (FeDC). Ten seed were planted in 10 foot rows for each replication in a completely randomized block with 3 replications. A subjective rating system was used and a total of nine ratings were recorded for each accession. Based on the nine ratings an average score was determined, and each accession was assigned a rating from very susceptible to very resistant to chlorosis (dark green). The soil at Blackland Research Center near Temple, Texas is Houston Black Clay (pH 8.2).