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language
jpn
Author
Cosmas Wacal
Ogata, Naoki
Basalirwa, Daniel
Handa, Takuo
Sasagawa, Daisuke
Acidri, Robert
Ishigaki, Tadashi
Kato, Masako
Yamamoto, Sadahiro
Nishihara, Eiji
Description
Sesame is an important oilseed crop cultivated worldwide. However, research has focused on biochar effects on grain crops and vegetable and there is still a scarcity of information of biochar addition on sesame. This study was to assess the effect of biochar addition on sesame performance, with a specific emphasis on growth, yield, leaf nutrient concentration, seed mineral nutrients, and soil physicochemical properties. A field experiment was conducted on an upland field converted from paddy at Tottori Prefecture, Japan. Rice husk biochar was added to sesame cropping at rates of 0 (F), 20 (F+20B), 50 (F+50B) and 100 (F+100B) t ha−1 and combined with NPK fertilization in a first cropping and a second cropping field in 2017. Biochar addition increased plant height, yield and the total number of seeds per plant more in the first cropping than in the second cropping. The F+50B significantly increased seed yield by 35.0% in the first cropping whereas the F+20B non-significantly increased seed yield by 25.1% in the second cropping. At increasing biochar rates, plant K significantly increased while decreasing Mg whereas N and crude protein, P and Ca were non-significantly higher compared to the control. Soil porosity and bulk density improved with biochar addition while pH, exchangeable K, total N, C/N ratio and CEC significantly increased with biochar, but the effect faded in the second cropping. Conversely exchangeable Mg and its plant tissue concentration decreased due to competitive ion effect of high K from the biochar. Biochar addition is effective for increasing nutrient availability especially K for sesame while improving soil physicochemical properties to increase seed yield, growth and seed mineral quality.
Subject
sesame
rice husk biochar
nutrient concentration
cropping
Journal Title
Agronomy
Volume
9
Issue
2
ISSN(Online)
2073-4395
Published Date
2019-1-27
DOI
Publisher
MDPI AG
NII Type
Journal Article
Format
PDF
Text Version
出版社版
Gyoseki ID
e35545
OAI-PMH Set
Faculty of Life and Environmental Science