TY - JOUR
T1 - Analyzing soil-available phosphorus by the Mehlich-3 extraction method to recommend a phosphorus fertilizer application rate for maize production in northern Mozambique
AU - Nasukawa, Hisashi
AU - Tajima, Ryosuke
AU - Muacha, Boaventura Isac Jonas
AU - Filomena Pereira, Maria Clarinda
AU - Naruo, Kazuhiro
AU - Nakamura, Satoshi
AU - Fukuda, Monrawee
AU - Ito, Toyoaki
AU - Homma, Koki
N1 - Funding Information:
We heartily thank the members of the Instituto de Investigação Agrária de Moçambique (IIAM) in Nampula for their technical support. This investigation was conducted as a part of the ‘Improving Research and Technology Transfer Capacity for Nacala Corridor Agriculture Development, Mozambique Project’, which is implemented by the Japan International Cooperation Agency (JICA).
Funding Information:
This work was supported by the Japan International Cooperation Agency [1000683].
Publisher Copyright:
© 2018, © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/4/3
Y1 - 2019/4/3
N2 - The available phosphorus (P) in soil is a major limiting factor for maize productivity in the Nacala corridor, Mozambique. In this study, soils were collected from three representative sites, Ribaue, Nampula, and Nacala, in the area, and each was used for maize pot experiment with five P fertilizer levels. The soil-available P content was determined by the Mehlich-3 method at 30 days after P fertilization. The shoot biomass and P concentration at the tasseling stage increased as the P fertilizer level increased and were significantly expressed as a function of soil-available P. Based on the function, the available P that attains 90% of the maximum shoot biomass was estimated as 79 mg P2O5 kg−1. Consequently, the results in this study suggest a recommendation of 32–74 kg P2O5 ha−1 fertilizer for maize production in the Nacala corridor although a field evaluation and economical evaluation are necessary. Abbreviations: Ex-: exchangeable cations; M-3: Mehlich-3; T-N: total nitrogen; T-C: total carbon.
AB - The available phosphorus (P) in soil is a major limiting factor for maize productivity in the Nacala corridor, Mozambique. In this study, soils were collected from three representative sites, Ribaue, Nampula, and Nacala, in the area, and each was used for maize pot experiment with five P fertilizer levels. The soil-available P content was determined by the Mehlich-3 method at 30 days after P fertilization. The shoot biomass and P concentration at the tasseling stage increased as the P fertilizer level increased and were significantly expressed as a function of soil-available P. Based on the function, the available P that attains 90% of the maximum shoot biomass was estimated as 79 mg P2O5 kg−1. Consequently, the results in this study suggest a recommendation of 32–74 kg P2O5 ha−1 fertilizer for maize production in the Nacala corridor although a field evaluation and economical evaluation are necessary. Abbreviations: Ex-: exchangeable cations; M-3: Mehlich-3; T-N: total nitrogen; T-C: total carbon.
KW - Maize
KW - Mehlich-3
KW - Nacala corridor
KW - phosphorus fertilizer
KW - plant phosphorus concentration
KW - shoot biomass
KW - soil-available phosphorus
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U2 - 10.1080/1343943X.2018.1547649
DO - 10.1080/1343943X.2018.1547649
M3 - Article
AN - SCOPUS:85057875227
SN - 1343-943X
VL - 22
SP - 211
EP - 214
JO - Plant Production Science
JF - Plant Production Science
IS - 2
ER -
