Mohammad Golam Kibria
Thesis: Foliar magnesium application to enhance wheat growth in acid soil
Soil acidity limits crop production due to its adverse effects of Al3+ toxicity by inhibition of root growth and decreased nutrient uptake. An integrated approach to acid soil management comprises liming, use of acid-tolerant species, efficient use of fertilizers, suitable crop rotations and crop diversification. Currently, there is a particular interest in the application of magnesium (Mg) to alleviate Al3+ toxicity in acid soil. My proposed research project will address the effectiveness of applying foliar Mg to alleviate Al3+ toxicity on plant growth in acid soils. Consequently, the proposed study will test the hypothesis that foliar application of Mg can facilitate wheat growth in acid soil by alleviating Al3+ toxicity and influencing the dynamics of root exudation and nutrient availability in the rhizosphere. In addition, WUE and root exudate variation will be studied with plant root architecture of Al-resistant and Al-sensitive wheat genotypes under Al3+ toxicity in soil.
Why my research is important
Due to acidifying farming systems and low pH buffering capacity of soils in Western Australia, soil pH is decreasing and it causes toxicity of different ions in soil, especially aluminium (Al3+). It causes a significant reduction in the plant growth and development, which ultimately decreases yield. The project will assess the performance of foliar application of Mg on wheat cultivation under acid soil and the findings from this project will contribute to enhancing wheat production in acid soil, which may be translatable to other related species.