Abstract
Adequate nutrition is essential to support plant growth, regenerative ability, and plant nutrient content. A screenhouse experiment was conducted to assess effects of fertilizer level on nutrient content of Amaranthus cruentus L. and determine the optimum fertilizer rate to support plant regrowth. Amaranthus seeds were sown in a sandy soil in plastic containers. A 20N–10P–10K compound fertilizer was applied to supply 25, 50, or 100 kg.ha−1 of N, with corresponding half-rates of P and K and a no-fertilizer control. Plants were harvested at 5 weeks by ratooning and plant regrowth harvested after an additional 5 weeks. Postcropping soil and plant chemical analyses were done. The 50N–25P–25K kg.ha−1 was optimum to support fresh growth. Plants were taller and had higher fresh and dry yields than 25N–12.5P–12.5K kg.ha−1. Plants treated with 50N–25P–25K kg.ha−1 had comparable stem circumference, number of leaves/plant, fresh yields, and dry yields as 100N–50P–50K kg.ha−1. Plant root development was best with 50N–25P–25K kg.ha−1. The 50N–25P–25K kg.ha−1 supplied adequate nutrients to support optimum regrowth. Soil acidity was reduced with increased NPK fertilizer. Soil N was optimal due to application of 50N–25P–25K kg.ha−1; plant N content increased with 100N–50P–50K kg.ha−1. Fertilizer application increased soil P but not plant P content. Soil and plant K contents were reduced. Amaranthus growth, regrowth, and plant nutrient contents are best supported with 20N–10P–10K fertilizer to supply 50 kg.ha−1 N, 25 kg.ha−1 P, and 25 kg.ha−1 of K.
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Claims 13
Claim · model-written summary
The 50N–25P–25K rate was optimum for fresh growth.
- Taxon
- Amaranthus
_with_green_foliage%2C_photographed_in_Tamil_Nadu%2C_India.jpg?width=60)
Amaranthust0 - Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- fresh growthe0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_with_green_foliage%2C_photographed_in_Tamil_Nadu%2C_India.jpg?width=500)
Verbatim
e0“The 50N–25P–25K kg.ha−1 was optimum to support fresh growth.”
t0“Amaranthus”
Claim · model-written summary
Plants receiving 50N–25P–25K were taller and had higher fresh and dry yields than at 25N–12.5P–12.5K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1t1
- Outcome
- fresh and dry yieldse0
- Direction
- highere0
- Comparator
- 25N–12.5P–12.5K kg.ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were taller and had higher fresh and dry yields than 25N–12.5P–12.5K kg.ha−1.”
t0“Amaranthus”
t1“The 50N–25P–25K kg.ha−1 was optimum to support fresh growth.”
Claim · model-written summary
At 50N–25P–25K, stem circumference, leaf number and fresh yield were comparable to 100N–50P–50K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- stem circumference, number of leaves/plant, fresh yieldse0
- Direction
- comparablee0
- Comparator
- 100N–50P–50K kg.ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with 50N–25P–25K kg.ha−1 had comparable stem circumference, number of leaves/plant, fresh yields, and dry yields as 100N–50P–50K kg.ha−1.”
t0“Amaranthus”
Claim · model-written summary
Dry yield at 50N–25P–25K was comparable to that at 100N–50P–50K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- dry yieldse0
- Direction
- comparablee0
- Comparator
- 100N–50P–50K kg.ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with 50N–25P–25K kg.ha−1 had comparable stem circumference, number of leaves/plant, fresh yields, and dry yields as 100N–50P–50K kg.ha−1.”
t0“Amaranthus”
Claim · model-written summary
Root development was best at 50N–25P–25K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- root developmente0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant root development was best with 50N–25P–25K kg.ha−1.”
t0“Amaranthus”
Claim · model-written summary
The 50N–25P–25K rate supplied adequate nutrients for optimum regrowth.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- regrowthe0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 50N–25P–25K kg.ha−1 supplied adequate nutrients to support optimum regrowth.”
t0“Amaranthus”
Claim · model-written summary
Soil acidity declined with increased NPK fertilizer.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- increased NPK fertilizere0
- Outcome
- Soil aciditye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil acidity was reduced with increased NPK fertilizer.”
t0“Amaranthus”
Claim · model-written summary
Soil nitrogen was optimal with 50N–25P–25K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 50N–25P–25K kg.ha−1e0
- Outcome
- Soil Ne0
- Direction
- optimale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil N was optimal due to application of 50N–25P–25K kg.ha−1”
t0“Amaranthus”
Claim · model-written summary
Plant nitrogen content increased with 100N–50P–50K.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- 100N–50P–50K kg.ha−1e0
- Outcome
- plant N contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant N content increased with 100N–50P–50K kg.ha−1.”
t0“Amaranthus”
Claim · model-written summary
Fertilizer increased soil phosphorus.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- Fertilizer applicatione0
- Outcome
- soil Pe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer application increased soil P but not plant P content.”
t0“Amaranthus”
Claim · model-written summary
Fertilizer did not increase plant phosphorus content.
- Taxon
- AmaranthusAmaranthust0
- Treatment
- Fertilizer applicatione0
- Outcome
- plant P contente0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer application increased soil P but not plant P content.”
t0“Amaranthus”
Claim · model-written summary
Soil and plant potassium contents were reduced.
- Taxon
- AmaranthusAmaranthust0
- Outcome
- Soil and plant K contentse0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil and plant K contents were reduced.”
t0“Amaranthus”
Claim · model-written summary
The authors recommend 20N–10P–10K fertilizer supplying 50 kg.ha−1 N, 25 kg.ha−1 P and 25 kg.ha−1 K for Amaranthus growth and nutrient content.
- Taxon
- AmaranthusAmaranthuse0
- Treatment
- 20N–10P–10K fertilizer to supply 50 kg.ha−1 N, 25 kg.ha−1 P, and 25 kg.ha−1 of Ke0
- Outcome
- growth, regrowth, and plant nutrient contentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amaranthus growth, regrowth, and plant nutrient contents are best supported with 20N–10P–10K fertilizer to supply 50 kg.ha−1 N, 25 kg.ha−1 P, and 25 kg.ha−1 of K.”
The same questions in other papers
fertilization · nutrient: content · AmaranthusPositive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.