We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Inhibition of Nodulation and Nitrogen Nutrition of Leguminous Crops by Selected Heavy Metals.
- Authors
Haddad, Samir A.; Tabatabai, M. Ali; Abdel-Moneim, Abdel-Moneim A.; Loynachan, Thomas E.
- Abstract
This work studied the effects, under greenhouse conditions, of six heavy metals (Cd, Co, Cr, Cu, Ni, and Pb) on three leguminous crops representing food, feed, and forage crops commonly grown in Egypt. Metal concentrations ranged from 0 to as high as 4.8 mmol kg-1 soil. Results showed that all three plant parameters measured (dry matter yield, nodulation, and N uptake) decreased significantly with increasing heavy-metal concentrations. Plots of the natural log of each parameter against metal concentration were linear within the ranges studies. From the slopes of these regression lines, the concentration of each heavy metal required to achieve 50% reduction (R50) of each parameter was calculated. In general, the lowest metal concentrations for R50 were for Cd2+ and Pb2+ and the highest were for Cr3+ and Cu2+. Heavy-metal additions to soils should be closely monitored because they can negatively affect nodulation and N nutrition of leguminous crops.
- Subjects
CROP nutrition; PLANT nutrition research; HEAVY metal content of plants; CHEMICAL composition of plants; GREENHOUSES
- Publication
Air, Soil & Water Research, 2015, Issue 8, p1
- ISSN
1178-6221
- Publication type
Article
- DOI
10.4137/ASWr.S21098