Feeding the world’s growing population
New Zealand’s reputation as a quality food producer is growing.
The Fertiliser Association of New Zealand promotes and encourages responsible and scientifically-based nutrient management.
Jim R Crush & Lily Ouyamg, AgResearch Ruakura, Hamilton, Greig Cousins, PGGWrightson Seeds, Grasslands Research Centre, Palmerston North
Completed October 2019
Chicory (Cichorium intybus L.) is being used increasingly as a summer livestock feed option. It has been shown to take up soil cadmium (Cd) into the leaf, and there is heritable variation in leaf Cd concentrations. The plant growth rate and Cd concentration are not linked which means it is possible to breed for vigorous chicory growth with reduced foliar Cd. There is no information available on the effects of selection of chicory for leaf Cd on the concentrations of micronutrients that are important for plant or animal health. This report examines the concentrations of essential trace elements: iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), cobalt (Co), selenium (Se) and iodine (I), measured in chicory plants previously selected for either high or low foliar Cd, and progeny lines from crossings within the high and low Cd populations.
The study was jointly commissioned by the Fertiliser Association of New Zealand and the Ministry of Primary Industries.
The full report has been published in the New Zealand Journal of Agricultural Research.