Abstract
Abstract To determine the effectiveness and efficiency of the application of inorganic compound fertilizer NK (18-32) on sweet corn, an experiment was conducted at the experimental garden in Malang, East Java, Indonesia, starting from March to June 2020. The study was arranged in a single-factor RBD with ten treatments and three replications. The treatments were a combination of doses of NK compound fertilizer, a single fertilizer as a comparison, and a control (without fertilizer). Besides control, all treatments were given P fertilizer at a dose of 100 kg/ha. The result showed that doses of 500-750 kg/ha of NK compound fertilizer significantly increased the growth and yield of the sweet corn plant. Each 10 kg dose increase of NK fertilizer will increase the total dry weight of the plant by 1.3055 g and give a yield of 12.57–13.64 tons/ha of fresh cobs. This result is equivalent to the yield of standard N-K single fertilizer (350 kg/ha Urea + 75 kg/ha). The dose of NK compound fertilizer of 125-250 kg/ha was proven to be able to substitute 100% KCl fertilizer (75 kg/ha). The RAE value of 750 kg/ha of NK fertilizer was 105.99 % higher than the standard/comparative single fertilizer. The combination of 125 kg/ha NK fertilizer + 250 kg/ha Urea and 250 kg/ha NK fertilizer + 100 kg/ha Urea, respectively, resulted in a RAE 3.91% and 1.00% higher than the standard fertilizer. Fertilization can improve the quality of sweet corn, namely the level of sweetness increases. NK (18-32) fertilizer doses of 500-750 kg/ha significantly increased the sweetness level of seed corn from 11.17% (without fertilizer) to 15.25-15.25%.
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Claims 9
Claim · model-written summary
NK fertilizer at 500-750 kg/ha significantly increased sweet corn growth.
- Taxon
- sweet corne1
- Treatment
- 500-750 kg/ha of NK compound fertilizere1
- Outcome
- growthe1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“doses of 500-750 kg/ha of NK compound fertilizer significantly increased the growth and yield of the sweet corn plant.”
Claim · model-written summary
NK fertilizer at 500-750 kg/ha significantly increased sweet corn yield.
- Taxon
- sweet corne1
- Treatment
- 500-750 kg/ha of NK compound fertilizere1
- Outcome
- yielde1
- Direction
- increasede1
Not reportedComparator
Verbatim
e1“doses of 500-750 kg/ha of NK compound fertilizer significantly increased the growth and yield of the sweet corn plant.”
Claim · model-written summary
Each 10 kg increase in NK dose raised total plant dry weight by 1.3055 g.
Verbatim
e1“Each 10 kg dose increase of NK fertilizer will increase the total dry weight of the plant by 1.3055 g”
t0“sweet corn”
Claim · model-written summary
Fresh cob yield was 12.57–13.64 tons/ha under the reported NK fertilization.
Verbatim
e1“give a yield of 12.57–13.64 tons/ha of fresh cobs”
t0“sweet corn”
Claim · model-written summary
NK fertilizer at 125-250 kg/ha substituted for KCl fertilizer.
Verbatim
e1“The dose of NK compound fertilizer of 125-250 kg/ha was proven to be able to substitute 100% KCl fertilizer (75 kg/ha).”
Claim · model-written summary
NK fertilizer at 750 kg/ha had RAE of 105.99%.
Verbatim
e1“The RAE value of 750 kg/ha of NK fertilizer was 105.99 % higher than the standard/comparative single fertilizer.”
t0“sweet corn”
Claim · model-written summary
The 125 kg/ha NK plus 250 kg/ha urea combination had RAE 3.91% above standard fertilizer.
Verbatim
e1“The combination of 125 kg/ha NK fertilizer + 250 kg/ha Urea and 250 kg/ha NK fertilizer + 100 kg/ha Urea, respectively, resulted in a RAE 3.91% and 1.00% higher than the standard fertilizer.”
t0“sweet corn”
Claim · model-written summary
The 250 kg/ha NK plus 100 kg/ha urea combination had RAE 1.00% above standard fertilizer.
Verbatim
e1“The combination of 125 kg/ha NK fertilizer + 250 kg/ha Urea and 250 kg/ha NK fertilizer + 100 kg/ha Urea, respectively, resulted in a RAE 3.91% and 1.00% higher than the standard fertilizer.”
t0“sweet corn”
Claim · model-written summary
NK fertilizer increased sweet corn sweetness from 11.17% to 15.25%.
Verbatim
e1“NK (18-32) fertilizer doses of 500-750 kg/ha significantly increased the sweetness level of seed corn from 11.17% (without fertilizer) to 15.25-15.25%.”
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