TY - JOUR
T1 - Application of N2-fixing cyanobacteria nostoc sp. SO-A31 to hydroponically grown water spinach (ipomoea aquatica L.)
AU - Salamah, Andi
AU - Fadilah, Nurrahmi
AU - Khoiriyah, Istatik
AU - Hendrayanti, Dian
N1 - Funding Information:
We would like to thank the Directorate General of Higher Education of Indonesia and the Directorate of Research and Community Engagement of Universitas Indonesia for supporting this research through The International Publication Research Grant (PITTA) 2017 to AS under contract No. 617/UN2.R3.1/HKP.05.00/2017. We also thank the Department of Biology Faculty of Mathematics and Natural Sciences Universitas Indonesia for their support.
Funding Information:
ISSN: 0126-0537 Accredited First Grade by Ministry of Research, Technology and Higher Education of The Republic of Indonesia, Decree No: 30/E/KPT/2018
Publisher Copyright:
© 2019 Universitas Brawijaya.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - For this research, an application of cyanobacteria Nostoc sp. SO-A31 as a nitrogen source for the growth of water spinach (Ipomoea aquatica L.) was carried out using a modified Deep-Water Culture (DWC) hydroponic system, outdoors. A Hoagland medium was used for the growth medium, with the absence or presence of ammonium and nitrate as the nitrogen sources. A 0.7 g fresh weight biomass of 21-day-old Nostoc sp. SO-A31 was inoculated into the system. The four treatment media for this study were HA0 (Hoagland, ammonium free+inoculant), HN0 (Hoagland, nitrate free+inoculant), HA0 N0 (Hoagland, ammonium free and nitrate free+inoculant), and HI (Hoagland with ammonium and nitrate +inoculant). AB-mix and complete Hoagland media were used as controls. The result showed that water spinach cultured on HA0 had good vegetative growth, as shown by the high yield of biomass, high number of leaves, high stem growth, and long roots. Inoculation of Nostoc sp. SO-A31 elongated the root of the water spinach plants in all treatments. The presence of Nostoc sp. SO-A31 in the complete Hoagland medium, though, caused chlorosis of the water spinach leaves. This study suggests that water spinach is a nitrate-dependent leafy vegetable.
AB - For this research, an application of cyanobacteria Nostoc sp. SO-A31 as a nitrogen source for the growth of water spinach (Ipomoea aquatica L.) was carried out using a modified Deep-Water Culture (DWC) hydroponic system, outdoors. A Hoagland medium was used for the growth medium, with the absence or presence of ammonium and nitrate as the nitrogen sources. A 0.7 g fresh weight biomass of 21-day-old Nostoc sp. SO-A31 was inoculated into the system. The four treatment media for this study were HA0 (Hoagland, ammonium free+inoculant), HN0 (Hoagland, nitrate free+inoculant), HA0 N0 (Hoagland, ammonium free and nitrate free+inoculant), and HI (Hoagland with ammonium and nitrate +inoculant). AB-mix and complete Hoagland media were used as controls. The result showed that water spinach cultured on HA0 had good vegetative growth, as shown by the high yield of biomass, high number of leaves, high stem growth, and long roots. Inoculation of Nostoc sp. SO-A31 elongated the root of the water spinach plants in all treatments. The presence of Nostoc sp. SO-A31 in the complete Hoagland medium, though, caused chlorosis of the water spinach leaves. This study suggests that water spinach is a nitrate-dependent leafy vegetable.
KW - Ammonium
KW - Cyanobacteria
KW - Hydroponic
KW - Nitrate
UR - http://www.scopus.com/inward/record.url?scp=85069693148&partnerID=8YFLogxK
U2 - 10.17503/agrivita.v41i2.1867
DO - 10.17503/agrivita.v41i2.1867
M3 - Article
AN - SCOPUS:85069693148
VL - 41
SP - 325
EP - 334
JO - Agrivita
JF - Agrivita
SN - 0126-0537
IS - 2
ER -