student profile: Mr Aman Deep Sharma


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Thesis work

Thesis title: Glyphosate-biochar interactions on Australian soils and control of glyphosate resistant weed

Supervisors: Guy ROTH , Peter SHARP , Daniel TAN , Bhagirath CHAUHAN

Thesis abstract:

Glyphosate (N-(phosphonomethyl) glycine) is a non-selective postemergence herbicide widely used in the field, vegetable crops and in orchards. Glyphosate can be extensively mobile in soil systems and a lack of retention of glyphosate for microbial degradation can result in glyphosate leaching into lower soil layers. Biochar has large surface area per weight and help stabilize organic chemicals such as herbicides in soil. We hypothesized that biochar application to soil can be an effective strategy to adsorb glyphosate. Another major problem related to widespread use of glyphosate is the emergence of glyphosate-resistant weeds. Feathertop Rhodes grass (FTR), a native of North America has raised concerns as a major weed problem in recent years in central Queensland and northern New South Wales (NSW), Australia due to increased adoption of zero tillage practices and tolerance of FTR against glyphosate, a widely used systemic herbicide.Crop species may compete for weed species depending on factors such as crop density, crop planting pattern, crop vigour and weed vigour. Keeping these aspects under consideration, our aim is to test the ability of crops like sorghum and mungbean planted at various densities and row spacings to control FTR.

Selected publications

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Journals

  • Sharma, A., Sharma, H., Lightfoot, D. (2011). The genetic control of tolerance to aluminum toxicity in the 'Essex' by 'Forrest' recombinant inbred line population. Theoretical and Applied Genetics, 122(4), 687-694. [More Information]
  • Sharma, A., Sharma, P., Brar, M., Dhillon, N. (2009). Comparative Response to Sulphur Application in Raya (Brassica juncea) and Wheat (Triticum aestivum) grown on Light Textured Alluvial Soils. Journal of the Indian Society of Soil Science, 57(1), 62-65.
  • Sharma, A., Brar, M., Malhi, S. (2005). Critical Toxic Ranges of Chromium in Spinach Plants and in Soil. Journal of Plant Nutrition, 28(9), 1555-1568. [More Information]

2011

  • Sharma, A., Sharma, H., Lightfoot, D. (2011). The genetic control of tolerance to aluminum toxicity in the 'Essex' by 'Forrest' recombinant inbred line population. Theoretical and Applied Genetics, 122(4), 687-694. [More Information]

2009

  • Sharma, A., Sharma, P., Brar, M., Dhillon, N. (2009). Comparative Response to Sulphur Application in Raya (Brassica juncea) and Wheat (Triticum aestivum) grown on Light Textured Alluvial Soils. Journal of the Indian Society of Soil Science, 57(1), 62-65.

2005

  • Sharma, A., Brar, M., Malhi, S. (2005). Critical Toxic Ranges of Chromium in Spinach Plants and in Soil. Journal of Plant Nutrition, 28(9), 1555-1568. [More Information]

Note: This profile is for a student at the University of Sydney. Views presented here are not necessarily those of the University.