Abstract
Nitrogen is essential for both vegetative and generative stages of plant growth. Nitrogen efficiency is related to plant growth, production cost, and fertilizer residue. Azolla has the ability to increase nitrogen fixation from the atmosphere. Thus, Azolla cultivation in paddy field is one strategy for improving nitrogen fertilizer efficiency and increasing plant vegetative and generative growth. The objective of this study was to evaluate the role of Azolla on improving nitrogen efficiency. This study was conducted from January to April 2018 in irrigated paddy field of Lubuklinggau Selatan II, Lubuklinggau. The study was laid out in a randomized block design arrangement with 4 replications. Treatments were combinations of Azolla and urea which were applied during vegetative and generative stages: 115 kg N ha-1 without Azolla (K1), 115 kg N ha-1 + 1000 kg ha-1 Azolla (K2), 86 kg N ha -1+ 1000 kg ha-1 Azolla (K3), 58 kg N ha -1 + 1000 kg ha-1 Azolla (K4), 29 kg N ha-1 + 1000 kg ha-1Azolla (K5), and zero N+1000 kg ha-1 azolla (K6). The application of 86 kg N ha-1 and 1000 azolla kg ha-1 (K3) increased 15.54% rice growth, 25.49% yield, and improved the N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE), and N efficiency ratio (NER).
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Claims 4
Claim · model-written summary
Azolla with 86 kg N ha-1 increased rice growth by 15.54%.
- Taxon
- rice
Oryza sativae1 - Treatment
- 86 kg N ha-1 and 1000 azolla kg ha-1e1
- Outcome
- rice growthe1
- Direction
- increasede1
- Value
- 15.54%e1
- Setting
- irrigated paddy field of Lubuklinggau Selatan IIe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of 86 kg N ha-1 and 1000 azolla kg ha-1 (K3) increased 15.54% rice growth, 25.49% yield, and improved the N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE), and N efficiency ratio (NER)”
e2“This study was conducted from January to April 2018 in irrigated paddy field of Lubuklinggau Selatan II, Lubuklinggau”
Claim · model-written summary
Azolla with 86 kg N ha-1 increased rice yield by 25.49%.
- Taxon
- riceOryza sativae1
- Treatment
- 86 kg N ha-1 and 1000 azolla kg ha-1e1
- Outcome
- yielde1
- Direction
- increasede1
- Value
- 25.49%e1
- Setting
- irrigated paddy field of Lubuklinggau Selatan IIe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of 86 kg N ha-1 and 1000 azolla kg ha-1 (K3) increased 15.54% rice growth, 25.49% yield, and improved the N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE), and N efficiency ratio (NER)”
e2“This study was conducted from January to April 2018 in irrigated paddy field of Lubuklinggau Selatan II, Lubuklinggau”
Claim · model-written summary
Azolla with 86 kg N ha-1 improved N fertilizer agronomic efficiency, agro-physiological efficiency and utilization efficiency in rice.
- Taxon
- riceOryza sativae1
- Treatment
- 86 kg N ha-1 and 1000 azolla kg ha-1e1
- Outcome
- N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE)e1
- Direction
- improvede1
- Setting
- irrigated paddy field of Lubuklinggau Selatan IIe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of 86 kg N ha-1 and 1000 azolla kg ha-1 (K3) increased 15.54% rice growth, 25.49% yield, and improved the N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE), and N efficiency ratio (NER)”
e2“This study was conducted from January to April 2018 in irrigated paddy field of Lubuklinggau Selatan II, Lubuklinggau”
Claim · model-written summary
Azolla with 86 kg N ha-1 improved the N efficiency ratio in rice.
- Taxon
- riceOryza sativae1
- Treatment
- 86 kg N ha-1 and 1000 azolla kg ha-1e1
- Outcome
- N efficiency ratio (NER)e1
- Direction
- improvede1
- Setting
- irrigated paddy field of Lubuklinggau Selatan IIe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The application of 86 kg N ha-1 and 1000 azolla kg ha-1 (K3) increased 15.54% rice growth, 25.49% yield, and improved the N fertilizer agronomic efficiency (AE), agro-physiological efficiency (APE), utilization efficiency (UE), and N efficiency ratio (NER)”
e2“This study was conducted from January to April 2018 in irrigated paddy field of Lubuklinggau Selatan II, Lubuklinggau”
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See all 2,045 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.