External calcium requirements for growth and nodulation of six tropical food legumes grown in flowing culture solution

Bell R.W., Edwards D.G. and Asher C.J. (1989) External calcium requirements for growth and nodulation of six tropical food legumes grown in flowing culture solution. Australian Journal of Agricultural Research, 40 1: 85-96. doi:10.1071/AR9890085


Author Bell R.W.
Edwards D.G.
Asher C.J.
Title External calcium requirements for growth and nodulation of six tropical food legumes grown in flowing culture solution
Journal name Australian Journal of Agricultural Research   Check publisher's open access policy
ISSN 0004-9409
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1071/AR9890085
Volume 40
Issue 1
Start page 85
End page 96
Total pages 12
Language eng
Subject 1100 Agricultural and Biological Sciences
Abstract Six tropical food legumes, peanut cv. Red Spanish, pigeonpea cv. Royes, guar cv. Brooks, soybean cv. Fitzroy, and cowpea cv. Vita 4 and CPI 282 15, were grown for 20 days at six constant solution calcium concentrations (2, 12, 50, 100, 500 and 2500 8M ) in flowing solution culture with adequate inorganic nitrogen (500 µM NO and with controlled nutrient concentrations. Bradyrhizobium CB756 was added at a rate of approximately 10 cells/ml of nutrient solution. Growth of all genotypes except guar was satisfactory at ≥12 µM calcium, with 75-100% of maximum root and shoot yield being obtained. Solution calcium concentrations required for maximum top growth were 12 µM for cowpea CPI 28215, 50 µM for peanut, 100 µM for soybean, and 2500 µM for cowpea cv. Vita 4, guar and pigeonpea. Root growth responded to solution calcium concentrations in the same way as top growth, except for cowpea cv. Vita 4 and pigeonpea, which both produced maximum root dry matter at 12 µM calcium. External calcium requirements for unrestricted growth may have been overestimated in guar because phosphorus deficiency appeared to limit growth at ≤500 µM calcium. Effects of suboptimal calcium concentrations included prevention of nodulation, delays in nodule appearance and a reduction in both nodule numbers and the proportion of plants which nodulated. Guar and pigeonpea formed nodules only at a ≥ 50 µM calcium, whereas cowpea and peanut formed nodules at 2 µM calcium. Maximum nodule numbers were recorded at lower (peanut), higher (cowpea cv. Vita 4, CPI 28215 and pigeonpea) or the same (guar) solution calcium concentration as that required for maximum root growth. Nodule formation in peanut was satisfactory at solution calcium concentrations as low as 12 µM. The results are discussed in relation to reports on the adaptation of these legumes to highly weathered soils low in calcium.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Scopus Import
Scopus Import - Archived
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 20 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 24 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 27 Jun 2017, 00:03:55 EST by System User