Abstract
Soybean (Glycine max L. Merr.) cultivars differ in their root morphology and their nutrient uptake capabilities. The relation between root growth, P and K uptake, and grain yield was investigated using eight cultivars grown in the field on Raub (Aquic Argiudoll) silt loam which received 49 kg P/ha and 93 kg K/ha. Hobbit (maturity group III, determinate) was among the highest in grain yield, P and K uptakes, and root system length. However, this cultivar was intermediate in its relative efficiency to utilize P and K to produce grain yield; among the most efficient cultivars were Asgrow 3127 (maturity group II) and Williams-79 (maturity group III). The hay cultivar, Wilson-6, was the least efficient. It was concluded that even though grain yield was correlated with nutrient uptake, selection for higher yields was not necessarily a selection for higher efficiency in utilization of fertilizer for grain production.
Original language | English |
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Pages (from-to) | 119-127 |
Number of pages | 9 |
Journal | Communications in Soil Science and Plant Analysis |
Volume | 16 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 1985 |
Externally published | Yes |
Keywords
- Phosphorus
- Plant production
- Potassium
- Root length
- efficiency
ASJC Scopus subject areas
- Agronomy and Crop Science
- Soil Science