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Mathur, Manish
- Kinetic of Nutrient Uptake and their Utilization Efficiency in a Seratonious Plant-Blepharis Sindica
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1 Department of Botany, Plant Ecology Section, Jai Narayan Vyas University, Jodhpur, Rajasthan, IN
1 Department of Botany, Plant Ecology Section, Jai Narayan Vyas University, Jodhpur, Rajasthan, IN
Source
Asian Journal of Bio Science, Vol 8, No 1 (2013), Pagination: 94-106Abstract
Efficiency of plant nutrient uptake and use span multiple levels of biological organization from leaves to ecosystems are significantly affected with both spatial and temporal events. Plant communities on nutrient-poor soils are thought to use nutrients more efficiently to produce biomass than plant communities on nutrient rich soils. Yet, increased efficiency with declining soil nutrients has not been demonstrated empirically in semi arid areas where nutrient uptake and their utilization efficiency thought to be strongly affected with soil nutrient conditions with various pulse, inter-pulse and non-pulse events. In present investigation net nutrient uptake (P, Na, K, Ca and Fe) by a desert lignified seratonious plant Blepharis sindica and its nutrient utilization efficiency (NUE) were assessed spatially and with specific seasonal events. ANOVA analysis revealed that all the factors undertaken in the present investigation (i.e. site, seasonal event and the interaction between them) affects P, Na, K, and Ca nutrient uptake (J) and their nutrient utilization efficiency (P<0.001), however, for iron, interaction between site and event were recorded non-significant. Kaiser-Meyer-Olkin (KMO) and Bartlett's test of sphericity proves the usefulness of factorial analysis used in this study. Path analysis with community parameters revealed that this plant seems to be a better nutrient efficient only when it plays a key stone species role in a community. Further its relative importance value below 40 seems to be a threshold for net uptake of calcium. Unimodel (hump back) relationships if net uptake of P and Ca and NUE of P and Na with soil organic carbon were established. 80-90 mg 100g1 soil organic carbon largely supports the net uptake of phosphorus and calcium and nutrient utilization efficiency of phosphorus and sodium. On the other hand higher organic carbon (150-165 mg 100g1) played an inhibitory factor for them. Soluble and insoluble sugars showed monotonic positive relationships with and net uptake of calcium and iron.Keywords
Net Uptake of Nutrient, Nutrient Utilization Efficiency, Spatial And Temporal Events, Principal Component Analysis, Path Analysis
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- Characterization of whole Plant Nutrient Utilization Efficiency under Heterogeneous Environmental Conditions
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Authors
Affiliations
1 Department of Botany, Plant Ecology Section, Jai Narayan Vyas University, Jodhpur, Rajasthan, IN
1 Department of Botany, Plant Ecology Section, Jai Narayan Vyas University, Jodhpur, Rajasthan, IN