Abstract
The aims of this research were to study some soil chemical properties, P, K, Fe uptake and sweet potato growth as the result of Crandalitte Extract, Humat Fraction, and Potassium application on Ultisol Warmare. The pot experiment was conducted in the Screen house, Department of Soil Science Faculty of Agriculture, University of Papua Manokwari. The pot experiment has been done using Completed Randomize Design with 7 treatments and four replications , namely: A0 = no fertilizer (treatment); A1 = 100% crandalitte extract + 0% organic fraction + 0% potassium; A2 = 80% crandalitte extract + 10% organic fraction + 10% potassium; A3 = 60% crandalitte extract + 20% organic fraction +2 0% potassium; A4 = 40% crandalitte extract + 30% organic fraction + 30% potassium; A5 = 20% crandalitte extract + 40% organic fraction + 40% potassium, and; A6 = 0% crandalitte extract + 50% organic fraction + 50% potassium. The dosage of each treatment was 100-liter ha-1 (4 g Pot -1). Some soil chemical characteristics were analyzed for pH (H2O), pH (KCl), N-Total, C-organic, P-available, K-total, and Al-exchangeable. P, K, Fe concentrations. The plant growth variables were measured mainly for long steam on 5, 6, 7 and 8 weeks after planting, biomass of trubus, Data were analyzed using statistical analyses of Analysis of Variance (F Test) and DMRT test. The result showed that the application of crandalitte extract, humic fraction and potassium was significantly increased the status of P-available and H-exchangeable, but not affected significantly for other soil chemical characteristics (pH H2O, pH KCl, C-organic percentage, N-total, and Al-exchangeable). Fresh and dry weight of sweet potato trubus were also significantly affected by those application, however it was not affected significantly on long steam; wet weight and dry weight of root and also root length of sweet potato. Among the treatments, the A2 treatment (80% EFC: 10% Organic fraction: 10% Potassium) showed a better value of the status P-available, H-exchangeable and the biomass of trubus. This might be related to the characteristic of acid mineral soil that need high P fertilizer and the balance application of organic matter and potassium.
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Claims 5
Claim · model-written summary
The applications significantly increased soil P availability and H exchangeability.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase1 - Treatment
- crandalitte extract, humic fraction and potassiume0
- Outcome
- P-available and H-exchangeablee0
- Direction
- increasede0
- Comparator
- no fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“the application of crandalitte extract, humic fraction and potassium was significantly increased the status of P-available and H-exchangeable”
e1“sweet potato growth”
e2“A0 = no fertilizer (treatment)”
Claim · model-written summary
The applications did not significantly affect the other stated soil chemical characteristics.
- Taxon
- sweet potatoIpomoea batatase2
- Treatment
- crandalitte extract, humic fraction and potassiume1
- Outcome
- pH H2O, pH KCl, C-organic percentage, N-total, and Al-exchangeablee0
- Direction
- not affected significantlye0
- Comparator
- no fertilizere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“not affected significantly for other soil chemical characteristics (pH H2O, pH KCl, C-organic percentage, N-total, and Al-exchangeable)”
e1“application of crandalitte extract, humic fraction and potassium”
e2“sweet potato growth”
e3“A0 = no fertilizer (treatment)”
Claim · model-written summary
The applications significantly affected sweet potato shoot fresh and dry weight.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- crandalitte extract, humic fraction and potassiume1
- Outcome
- Fresh and dry weight of sweet potato trubuse0
- Comparator
- no fertilizere2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh and dry weight of sweet potato trubus were also significantly affected by those application”
e1“application of crandalitte extract, humic fraction and potassium”
e2“A0 = no fertilizer (treatment)”
Claim · model-written summary
The applications did not significantly affect sweet potato stem length or root weight and length.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- crandalitte extract, humic fraction and potassiume1
- Outcome
- long steam; wet weight and dry weight of root and also root lengthe0
- Direction
- not affected significantlye0
- Comparator
- no fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was not affected significantly on long steam; wet weight and dry weight of root and also root length of sweet potato”
e1“application of crandalitte extract, humic fraction and potassium”
e2“A0 = no fertilizer (treatment)”
Claim · model-written summary
A2 gave better soil P availability, H exchangeability and shoot biomass than the other treatments.
- Taxon
- sweet potatoIpomoea batatase1
- Treatment
- A2 treatment (80% EFC: 10% Organic fraction: 10% Potassium)e0
- Outcome
- P-available, H-exchangeable and the biomass of trubuse0
- Direction
- bettere0
- Comparator
- the treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the treatments, the A2 treatment (80% EFC: 10% Organic fraction: 10% Potassium) showed a better value of the status P-available, H-exchangeable and the biomass of trubus.”
e1“sweet potato growth”
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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.