Nitrogen transfer from warmseason annual legumes to pearl millet
Additional Document Info
A glasshouse study was conducted to determine and quantify direct transfer of nitrogen (N) between 3 selected warm-season annual legumes and a warm-season annual grass during the growing season, Tifleaf pearl millet [Pennisetum americanum (L.) Leeke] was grown in pots as a monoculture with and without N applied as inorganic fertilizer, or with either Iron and Clay cowpeas [Vigna unguiculata (L.) Walp], common alyceclover [Alysicarpus vaginalis (L.) DC.], or Comanche partridge pea (Cassia fasciculata Michx.). Sixty-three percent of the N contained in pearl millet grown with alyceclover was derived directly from alyceclover as determined by the15N dilution technique. Partridge peas and cowpeas transferred 34% and 32%, respectively, of the N contained in companion pearl millet plants. Pearl millet grown with partridge peas produced dry matter yields similar to pearl millet that received the equivalent of 112 kg N/ha. Pearl millet grown with legumes contained lower levels of neutral detergent fiber than did pearl millet that received inorganic fertilizer. Nitrogen content of pearl millet grown with legumes was not as great as pearl millet that received N-fertilizer. Copyright 1995 by Marcel Dekker, Inc.