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2012 (Vol. 4, Issue: 06)
Article Information:

The Impact of Four Herbicides on Soil Minerals

A. Sebiomo, V.W. Ogundero and S.A. Bankole
Corresponding Author:  Sebiomo Adewole 

Key words:  Calcium, concentration, herbicide, iron, magnesium, potassium, zinc
Vol. 4 , (06): 617-624
Submitted Accepted Published
February 14, 2012 June 10, 2012 June 30, 2012
Abstract:

The aim of this study was to investigate the interaction of atrazine, primextra, paraquat and glyphosate with soil minerals. The treatments were carried out for a period of 6 weeks; at company recommended rates of 4l/h (at 350 mL in 15 L sprayer) for paraquat, glyphosate and primeextra while recommended rate of 3 kg/h (atrazine powder) was used for atrazine treatment (soil treatments were carried out in triplicates). Soil moisture content was determined using Satorious Moisture content Analyser. Soil mineral concentration were then determined by injecting sample solutions (extract) and standard solution for each mineral into the atomic absorption spectrophotometer into sample fray and the mean signal response was recorded for each of the element at their respective wavelength. The concentrations of the minerals were then calculated. Herbicide treated soils showed reduction in the moisture content from the second to the sixth weeks of treatment. There was significant (p<0.001) reduction in Sodium ion (Na) and Calcium ion (Ca) concentration compared to the control. The potassium, Magnesium, Iron and Zinc (K, Mg, Fe and Zn) increased significantly (p<0.001) compared to the control. Ths study has elucidated the ability of herbicides to chelate with soil minerals thereby reducing their availability for uptake by plants. It has also been shown that soil minerals are utilised by plants and microbes during microbial degradation.
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  Cite this Reference:
A. Sebiomo, V.W. Ogundero and S.A. Bankole, 2012. The Impact of Four Herbicides on Soil Minerals.  Research Journal of Environmental and Earth Sciences, 4(06): 617-624.
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ISSN (Online):  2041-0492
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