Abstract
Abstract The Ultisols has high soil acidity, Al and Fe concentration and low organic matter, nutrients, base saturation, and CEC, that limit the growth of rice and maize. The research aimed to evaluate the effectiveness of the application of fertilizers, soil ameliorant, and their combinations to improve Ultisol productivity including to increase rice and maize crops yields. This research was conducted at the Taman Bogo experimental station, Lampung Timur District, for two growing seasons (GS-1 and GS-2) in 2019. Field experiment used randomized block design with eight treatments and three replications. The treatments were included control, recommendation dosage of fertilizers (for rice: 250 kg urea ha −1 , 200 kg SP-36 ha −1 , 75 kg KCl ha −1 ; for maize: 300 kg urea ha, 175 kg SP-36 ha −1 , 100 kg KCl ha −1 ), and combination of the recommendation dosage of fertilizers, manure, biofertilizer, and rock phosphate. Recommendation dosage of fertilizer was determined using upland soil test kit (made by Indonesian Soil Research Institute). The result showed that soil ameliorant and biofertilizer application gave significant effect to improve soil chemical physic properties and plant yields.
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Claims 3
Claim · model-written summary
Ameliorant and biofertilizer improved rice yields.
- Taxon
- rice
Oryza sativat0 - Treatment
- soil ameliorant and biofertilizer applicatione0
- Outcome
- plant yieldse0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil ameliorant and biofertilizer application gave significant effect to improve soil chemical physic properties and plant yields”
t0“rice and maize”
Claim · model-written summary
Ameliorant and biofertilizer improved maize yields.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil ameliorant and biofertilizer application gave significant effect to improve soil chemical physic properties and plant yields”
t0“rice and maize”
Claim · model-written summary
Ameliorant and biofertilizer improved soil physical and chemical properties.
- Taxon
- rice and maizeOryza sativa
Zea mayst0 - Treatment
- soil ameliorant and biofertilizer applicatione0
- Outcome
- soil chemical physic propertiese0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil ameliorant and biofertilizer application gave significant effect to improve soil chemical physic properties and plant yields”
t0“rice and maize”
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inoculation · yield · Oryza sativa (rice)Positive and negative results
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- negative
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See all 418 papers →inoculation · yield · Zea mays (maize)Positive and negative results
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See all 538 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.