Table of Contents
Physiology Journal
Volume 2014, Article ID 545967, 15 pages
Research Article

Physiological Responses to Nutrient Accumulation in Trees Seedlings Irrigated with Municipal Effluent in Indian Desert

1Division of Forest Ecology, Arid Forest Research Institute, New Pali Road, Jodhpur 342005, India
2Division of Forest Genetics and Tree Breeding, Arid Forest Research Institute, New Pali Road, Jodhpur 342005, India

Received 5 February 2014; Revised 25 June 2014; Accepted 2 July 2014; Published 24 July 2014

Academic Editor: Deyue Yu

Copyright © 2014 G. Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Leaf water potential ( ), net photosynthesis rate ( ), transpiration rate ( ), stomatal conductance ( ), and water use efficiency (WUE) are greatly influenced by the nutrient composition of water which is used for irrigating trees. The above-mentioned physiological variables and foliage mineral concentrations were observed for Eucalyptus camaldulensis, Acacia nilotica, and Dalbergia sissoo plants irrigated with municipal effluent (ME) at 1/2 PET (potential evapotranspiration; T1), 1 PET (T2), and 2 PET (T3) rates and the control plants irrigated with canal water at 1PET (T4). Increased mineral concentrations in order T1 < T2 < T3 enhanced , , , and . Relatively greater increase in than reduced WUE. Available nutrient in ME enhanced physiological function in T2, whereas reduced quantity of water lowered it in T1 than in T4 plants. Differential minerals uptake increased concentrations of N and P in D. sissoo, Mn in E. camaldulensis, and the rest in A. nilotica. was more sensitive to environment than . Enhanced mineral concentration through ME was beneficial but its differential uptake and accumulation influenced physiological functions and WUE. E. camaldulensis is better for high and continuous loading of effluent and A. nilotica is best for high nutrient uptake. D. sissoo is efficient water user.