Kansas State University
Collaborating Scientists' Institutions: Agricultural Technology Improvement Projects (Botswana); Fort Hays Branch Experiment Station (US)
Richard L. Vanderlip
Seed from two pearl millet hybrids, one a large seeded hybrid and the other a small seeded hybrid, were separated into size category and tested under a range of temperature and soil moisture conditions. Planting depths, soil moisture, and temperature had pronounced effects on emergence establishment and seedling growth. Ii general, seed characteristics had no effect on any of the variables measured. Comparisons between grain sorghum and pearl millet for responses to rate and date of planting show that there were no consistent differences between the two crops in response to date of planting. Because of its ability to compensate in terms of head numbers per
plant and seed number, pearl millet showed very little response to plant population in comparison to grain sorghum.
1. Investigate mesocotyl and coleoptile growth of different genotypes and from different seed qualities as they respond to temperature. 2. Determine under controlled conditions the interactions of seed characteristics and environmental factors. 3. Compare planting date and plant population responses of sorghum and pearl millet.