Combating subsoil acidity for sustainable production through managing plant cation-anion uptake. At least 50 million hectares of topsoil and 23 million ha of subsoil of Australian land are presently affected by acidity, with this area expanding due to the ongoing processes of acidification. Surface liming is ineffective in neutralizing subsoil acidity. The project will develop an innovative method that stimulates root proliferation and ameliorates subsoil acidity through manipulating the balance ....Combating subsoil acidity for sustainable production through managing plant cation-anion uptake. At least 50 million hectares of topsoil and 23 million ha of subsoil of Australian land are presently affected by acidity, with this area expanding due to the ongoing processes of acidification. Surface liming is ineffective in neutralizing subsoil acidity. The project will develop an innovative method that stimulates root proliferation and ameliorates subsoil acidity through manipulating the balance of nutrient uptake by plants. The effects of the developed method on nutrient use efficiency and leaching loss, and crop yields will be quantified under different soil types and climatic conditions.Read moreRead less
Using modelling to optimise the structure and function of crop root systems for dryland agriculture. The crop root systems are poorly suited to harsh conditions in Australian agriculture, especially as climate is getting drier. Poor water-use efficiency lowers crop yields below the potential yield; moreover, unutilised water and nutrients contribute to environmental problems, eg salinity and eutrophication. This project will use our simulation model to develop computer-aided design of 3-D root s ....Using modelling to optimise the structure and function of crop root systems for dryland agriculture. The crop root systems are poorly suited to harsh conditions in Australian agriculture, especially as climate is getting drier. Poor water-use efficiency lowers crop yields below the potential yield; moreover, unutilised water and nutrients contribute to environmental problems, eg salinity and eutrophication. This project will use our simulation model to develop computer-aided design of 3-D root structure and function (water and nutrient uptake) tailored to particular environments. Modelling will also link suitable root traits to genetic markers in well-characterised lupin germplasm. The blueprint developed here will be adaptable to other crops. The project will enhance breeding for increased water- and nutrient-use efficiency.Read moreRead less