Abstract
The study was conducted in a Lipa clay loam soil at Los Baños, Laguna, Philippines during the 2012 and 2013 wet cropping seasons to compare the growth and yield performance of upland rice (Oryza sativa L.) varieties under organic and inorganic fertilization. The parameters considered include periodical changes in soil nutrient status, agronomic efficiency of nitrogen (AEN), grain yield and return on investment (ROI). The treatments were arranged in split-plot design fitted into a randomized complete block design, with varieties as the main plots and varying fertilizer management treatments using organic (Pureganic and Vermicompost) and inorganic fertilizers as the subplots. NSIC Rc9 variety performed better in terms of growth and grain yield than Inipot-Ibon, a traditional variety; it had higher harvest index, number of spikelets, filled grains and AEN. Generally, inorganic fertilizers improved the grain and straw yields as well as the AEN of NSIC Rc9 compared with Inipot-ibon. Applying organic fertilizer did not increase the grain yield of both NSIC Rc9 and Inipot-ibon in two consecutive croppings. No significant effect of varieties or fertilizer management was observed on the soil organic matter (SOM), total available nitrogen, available phosphorus and exchangeable potassium but the values tended to decline every season after cropping of upland rice. In general, the ROI obtained from upland rice production was either break-even or had negative returns, making upland rice production less profitable.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
NSIC Rc9 had better growth and grain yield than Inipot-Ibon.
- Taxon
- upland rice
Oryza sativae1 - Material
- NSIC Rc9e0
- Outcome
- growth and grain yielde0
- Direction
- bettere0
- Comparator
- Inipot-Ibone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NSIC Rc9 variety performed better in terms of growth and grain yield than Inipot-Ibon”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
NSIC Rc9 had higher harvest index, spikelet number, and filled grain number than Inipot-Ibon.
- Taxon
- upland riceOryza sativae1
- Material
- NSIC Rc9e0
- Outcome
- harvest index, number of spikelets, filled grainse0
- Direction
- highere0
- Comparator
- Inipot-Ibone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NSIC Rc9 variety performed better in terms of growth and grain yield than Inipot-Ibon, a traditional variety; it had higher harvest index, number of spikelets, filled grains and AEN.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
NSIC Rc9 had higher agronomic efficiency of nitrogen than Inipot-Ibon.
- Taxon
- upland riceOryza sativae1
- Material
- NSIC Rc9e0
- Outcome
- AENe0
- Direction
- highere0
- Comparator
- Inipot-Ibone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NSIC Rc9 variety performed better in terms of growth and grain yield than Inipot-Ibon, a traditional variety; it had higher harvest index, number of spikelets, filled grains and AEN.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Inorganic fertilizer improved grain and straw yields of NSIC Rc9 compared with Inipot-ibon.
- Taxon
- upland riceOryza sativae1
- Material
- NSIC Rc9e0
- Treatment
- inorganic fertilizerse0
- Outcome
- grain and straw yieldse0
- Direction
- improvede0
- Comparator
- Inipot-ibone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inorganic fertilizers improved the grain and straw yields as well as the AEN of NSIC Rc9 compared with Inipot-ibon.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Inorganic fertilizer improved AEN of NSIC Rc9 compared with Inipot-ibon.
- Taxon
- upland riceOryza sativae1
- Material
- NSIC Rc9e0
- Treatment
- inorganic fertilizerse0
- Outcome
- AENe0
- Direction
- improvede0
- Comparator
- Inipot-ibone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inorganic fertilizers improved the grain and straw yields as well as the AEN of NSIC Rc9 compared with Inipot-ibon.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Organic fertilizer did not increase grain yield of NSIC Rc9.
- Taxon
- upland riceOryza sativae1
- Material
- NSIC Rc9e0
- Treatment
- organic fertilizere0
- Outcome
- grain yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying organic fertilizer did not increase the grain yield of both NSIC Rc9 and Inipot-ibon in two consecutive croppings.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Organic fertilizer did not increase grain yield of Inipot-ibon.
- Taxon
- upland riceOryza sativae1
- Material
- Inipot-ibone0
- Treatment
- organic fertilizere0
- Outcome
- grain yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying organic fertilizer did not increase the grain yield of both NSIC Rc9 and Inipot-ibon in two consecutive croppings.”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Variety or fertilizer regime had no significant effect on soil organic matter, nitrogen, and phosphorus.
- Taxon
- upland riceOryza sativae1
- Treatment
- varieties or fertilizer managemente0
- Outcome
- soil organic matter (SOM), total available nitrogen, available phosphoruse0
- Direction
- No significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant effect of varieties or fertilizer management was observed on the soil organic matter (SOM), total available nitrogen, available phosphorus and exchangeable potassium”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Variety or fertilizer regime had no significant effect on exchangeable soil potassium.
- Taxon
- upland riceOryza sativae1
- Treatment
- varieties or fertilizer managemente0
- Outcome
- exchangeable potassiume0
- Direction
- No significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant effect of varieties or fertilizer management was observed on the soil organic matter (SOM), total available nitrogen, available phosphorus and exchangeable potassium”
e1“upland rice (Oryza sativa L.)”
Claim · model-written summary
Soil nutrient values tended to decline after each rice season.
- Taxon
- upland riceOryza sativae0
- Outcome
- valuese0
- Direction
- declinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the values tended to decline every season after cropping of upland rice.”
Claim · model-written summary
Upland rice production generally broke even or returned losses.
- Taxon
- upland riceOryza sativae0
- Outcome
- ROIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ROI obtained from upland rice production was either break-even or had negative returns”
The same questions in other papers
fertilization · nutrient: efficiency · Oryza sativa (rice)Positive and negative results
201 papers in the same direction as this paper · 12 in the opposite direction · 6 reporting no difference from an alternative
- no effect
- no effect
- negative
216 papers more in this group
See all 220 papers →fertilization · soil: chemistry · Oryza sativa (rice)Positive and negative results
24 papers in the same direction as this paper · 280 in the opposite direction
- positive
- positive
- positive
301 papers more in this group
See all 305 papers →fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- no effect
- no effect
3,451 papers more in this group
See all 3,455 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.