Correlations of Atriplex amnicola and soil properties
2006
Ullah, M.A. (National Agricultural Research Centre, Islamabad (Pakistan). Rangeland Research Programme) | Naseem, A.R. | Rafiq, M.K. | Razzaq, A.
A growing experimental plot of Atriplex amnicola was selected at the research area of University of Agriculture, Faisalabad. The Atriplex amnicola plants (240 number) growing at the spacing of 3x3 meter were available in an area of one acre. The soil of the experimental site was saline sodic, loamy clay {ECe = 8.09 - 39.93 dSm-1, pH, = 8.05 - 8.95 & SAR = 11.23 - 30.22 (m mol L-1)1/2}. For the present study, 12 approximately uniform plants in age, spread and height were selected. Two cuttings were obtained with an interval of two months. Plant height and crosswise diameters were recorded to calculate the canopy volume. Fresh and oven dried biomass was also determined. Soil profile was sampled up to the depth of 150 cm and representative soil samples were collected and analyzed for ECe, pH and SAR, Plant ash, Na, K and CI contents in plant materials were determined in the laboratory. Mean ECe, of the soil was decreased in second cutting as compared to first o ne, thus indicating a decrease with plant growth. Mean soil pH, was found to be 8.6 or less at different depths at the time of first cutting g which was raised to 88 after last cutting. Mean surface SAR was recorded, as 27.3 (in mol L-1)1/2 at first cutting and 20.7 (m mol L- 1)1/2 at last cutting. Thus, there was a decrease in SAR at the last cutting. Correlation between soil ECe and volume/fresh yield of Atriplex amnicola was positive and generally significant. However, all other correlation like between soil pHs and plant parameters, SAR and plant parameters and chemical composition (Na: K & Cl content) and plant parameters were found to be non-significant.
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