Effect of a Hydrophilic Polymer Seed Coating on the Field Performance of Sweet Corn and Cowpea

Four levels (1.1, 2.3, 4.6, and 9.1 g/kg seed) of the hydrophilic polymer Waterlock B100 were used as seed coatings to enhance stand establishment and plant growth of sweet corn ( Zea mays ) and cowpea ( Vigna Unguiculata ) during the spring and summer of 1983 on 2 soil types in Minnesota. The level with the best overall response in 1983 was used in 1984 to observe the response of 4 sweet corn hybrids. The 2.3 and 4.6 g treatment were most beneficial in enhancing stand establishment in sweet corn. At all levels, however, Waterlock B100 had a deleterious effect on cowpea germination and seedling development. One sweet corn hybrid showed a significant positive response to the coating during 1984. This reponse was attributed to a uniform pericarp which allowed an even seed coating.