title: [Effects of applying L-methionine, L-phenylalanine and L-tryptophan on Zea mays growth and its nutrient uptake].
abstract: A pot experiment was conducted to evaluate the effects of applying L-methionine (L-MET), L-phenylalanine (LPHE) and L-tryptophan (L-TRP) on the growth of Zea mays and its nutrient uptake, and to determine the optimal application rate of them. The results showed that L-MET, L-PHE and L-TRP could improve the shoot height, shoot and root dry weights, root activity, nitrate reductase and hydrogen peroxidase activities, and N, P, K and Zn uptake of corn. The optimal application rate of L-MET, L- PHE and L-TRP was 0.0185 - 0.185 mg x kg)(-1) soil, 0.2 mg x kg(-1) soil, and 0.03 - 0.3 mg x kg(-1) soil, respectively, and L-PHE and L-TRP were superior to L-MET.
authors.affiliation: Laboratory of Soil Environment and Nutrient Resources, Institute of Soil and Fertilizer, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China. mccheng@public.ty.sx.cn
authors.forename: Mingchang
authors.initials: M
authors.lastname: Chen
authors.forename: Bin
authors.initials: B
authors.lastname: Cheng
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Ding
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Yang
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
mesh_terms: D005308:Fertilizers; D008715:Methionine / Q000494:pharmacology*; D010649:Phenylalanine / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000494:pharmacology; D012987:Soil / Q000032:analysis*; D014364:Tryptophan / Q000494:pharmacology*; D003313:Zea mays / Q000254:growth & development* / Q000378:metabolism
chemical_list: D005308:Fertilizers; D010937:Plant Growth Regulators; D012987:Soil; D010649:Phenylalanine; D014364:Tryptophan; D008715:Methionine