Rattan root morphology under different inorganic nitrogen fertilization

International Conference on Agriculture, Environment, and Food Security 2018

农业科学;生态环境科学

Bangkele, L.I.^1 ; Basir-Cyio, M.^2 ; Tjoa, A.^2 ; Tellu, A.T.^3

Agriculture Doctoral Programme, Tadulako University, Palu, Indonesia^1

Agriculture Faculty, Tadulako University, Palu, Indonesia^2

Biology Departement, Tadulako University, Palu, Indonesia^3

关键词: Application method;    Biomass productions;    Control treatments;    Inorganic nitrogen;    Physiological stress;    Research results;    Root architecture;    Urea fertilization;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/260/1/012126/pdf
DOI  :  10.1088/1755-1315/260/1/012126

来源: IOP

【 摘 要 】

Input such as fertilizer highly affects the root response, and can change the root morphology and architecture, which will have an impact on the nutrient uptake and biomass production. This research investigates changes in root architecture and morphology, nitrogen uptake and biomass production of the Noko rattan seed in the treatment of inorganic (N) fertilizers from different sources fertilization (N-Urea (CO (NH2)2), and N-ZA ((NH4) 2.SO4)), and different application method. The research results showed that treatment without N+P fertilizer (control treatment) led to more intensive root growth, which was shown in dry biomass of root, higher amount of root branches and root hairs compared to N-urea or N-ZA fertilization. N-Urea fertilization affects the root hairs of rattan becomes shorter and finer, decreases the dry weight of the roots, but increases the roots surfaces compared to the roots in the control treatment an d N-ZA fertilization. Localized (in hole) fertilization causes root physiological stress and change the root architecture, causing a decrease in N uptake but otherwise increase the P uptake, but the biomass production is lower than the homogeneous fertilization.