Nickel acquisition affected by root density of mono- and mixed-cropping peanut and choy sum

Nickel (Ni) and associated minerals (Cr Mn) are naturally occurring substances in ultramafic laterites soil. It may be found our vegetables grains when agriculture is grown laterites. This study aimed to assess the contamination of Ni edible crops affected by soil volume mono- mixed cropping on limonitic laterite The investigation was conducted Peanut (Arachis hypogaea L.) Choy Sum (Brassica rapa var. parachinensis) three different pots sizes-representing support root growth, which filled with 0.5 kg (small), 1.0 (medium), 1.5 (big) soil, respectively. has a 7.884 mg kg-1 concentration. experiment shows that concentration peanut shoots mono-cropping small, medium, big achieve 20, 90, 120 51, 67, 95 kg-1, Meanwhile, cropping, lower only 33, 50, 51 15, 52, 63 Contamination increases increasing volume, potential strategy reduce acquisition Ni.