Root growth, nutrient uptake and yield of soybean cultivars grown in the field

M. Silberbush, S. A. Barber

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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 languageEnglish
Pages (from-to)119-127
Number of pages9
JournalCommunications in Soil Science and Plant Analysis
Volume16
Issue number1
DOIs
StatePublished - 1 Jan 1985
Externally publishedYes

Keywords

  • Phosphorus
  • Plant production
  • Potassium
  • Root length
  • efficiency

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