Monday, November 13, 2006

The influence of nitrogen rates, planting dates, and seeding rates on herbage biomass and nutritive values of Teff (Erogrostis tef (Zucc.).

A. Ozzie Abaye, 245 Smyth Hall, Virginia Tech, Virginia Tech University, Dept. of Crop & Soil Environmental Science, Blacksburg, VA 24061, Chris Teutsch, 245 Smyth Hall, Virginia Tech University, Virginia Tech University, Blacksburg, VA 24061, United States of America, William Clapham, USDA-ARS-AFSRC, 1224-Airport Rd, 1224-Airport Rd, Beaver, WV 25813, United States of America, and Tim Phillips, University of Kentucky, UK Coll of Ag. Dep. of Plant & Soil Sci. Rm 325, Plant Sci. Bldg. 1405 Veterans Dr., Lexington, KY 40546-0312.

Teff (Erogrostis tef (Zucc.) is a warm-season annual grass adapted to various climatic conditions. Where commonly grown, Teff can be used for both human consumption and as animal feed. Teff is a relatively new crop in the US. Therefore, limited information is available on cultural practices such as seeding rates, fertilization and planting dates. Experiments were conducted across three geographical locations (Kentucky, West Virginia and Virginia) to examine the effects of nitrogen rates, seeding rates and planting dates on biomass, and nutritive values of Teff. Our first year data indicated that establishing Teff during May was difficult and may be the result of cool temperatures and photoperiod. Teff established easily in the June and July plantings. These data will be useful for defining the window of Teff productivity and estimating number of harvests. Seeding rates as well as nitrogen rates had limited effect on yield.