Abstract
Dissolved organic matter (DOM) is the immediate energy, carbon, and other nutrient substrates for microbial growth and, therefore, plays an essential role in agroecosystem biochemical processes. The aim of this study was to elucidate the interrelationships among watermelon growth, DOM chemical characteristics, nutrient content, and microbial functional diversity in organic soilless growing substrates. We analyzed the effect of no fertilizer application (CK), PK fertilizer application (PK), and NPK fertilizer application (NPK) on fruit yield of watermelon, DOM chemical structure, nutrient status, and microbial functional diversity in organic substrates cultivated with watermelon. Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3−-N concentration. The application of NPK chemical fertilizer in substrates decreased the degree of humification in DOM and microbial functional diversity compared with CK treatment. Our results demonstrate that the quality of DOM plays an important role in improving the fruit yield of watermelon and is tightly related to microbial functional diversity in organic substrates.
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Claims 8
Claim · model-written summary
The NPK treatment gave a significantly lower watermelon fruit yield than no fertilizer.
- Taxon
- watermelon
Citrullus lanatuse0 - Treatment
- NPK treatmente0
- Outcome
- fruit yielde0
- Direction
- significantly lowere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3−-N concentration”
Claim · model-written summary
The NPK treatment gave lower DOC concentration in organic substrates than no fertilizer.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- NPK treatmente0
- Outcome
- DOC concentratione0
- Direction
- lowere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3−-N concentration”
Claim · model-written summary
The NPK treatment gave significantly higher DON concentration in organic substrates than no fertilizer.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- NPK treatmente0
- Outcome
- DON concentratione0
- Direction
- significantly highere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3−-N concentration”
Claim · model-written summary
The NPK treatment gave higher NO3−-N concentration in organic substrates than no fertilizer.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- NPK treatmente0
- Outcome
- NO3−-N concentratione0
- Direction
- highere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon, lower DOC concentration, significantly higher DON concentration, and higher NO3−-N concentration”
Claim · model-written summary
NPK chemical fertilizer decreased the degree of humification of dissolved organic matter compared with the CK treatment.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- NPK chemical fertilizere1
- Outcome
- degree of humification in DOMe1
- Direction
- decreasede1
- Comparator
- CK treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon”
e1“The application of NPK chemical fertilizer in substrates decreased the degree of humification in DOM and microbial functional diversity compared with CK treatment”
Claim · model-written summary
NPK chemical fertilizer decreased microbial functional diversity in organic substrates compared with the CK treatment.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- NPK chemical fertilizere1
- Outcome
- microbial functional diversitye1
- Direction
- decreasede1
- Comparator
- CK treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the CK, the NPK treatment resulted in a significantly lower fruit yield of watermelon”
e1“The application of NPK chemical fertilizer in substrates decreased the degree of humification in DOM and microbial functional diversity compared with CK treatment”
Claim · model-written summary
Dissolved organic matter quality is associated with improved watermelon fruit yield.
- Taxon
- watermelonCitrullus lanatuse2
- Compound
- DOMe2
- Outcome
- fruit yielde2
- Direction
- improvinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Our results demonstrate that the quality of DOM plays an important role in improving the fruit yield of watermelon”
Claim · model-written summary
Dissolved organic matter quality is tightly related to microbial functional diversity in organic substrates.
- Taxon
- watermelonCitrullus lanatuse2
- Compound
- DOMe2
- Outcome
- microbial functional diversitye2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“the quality of DOM plays an important role in improving the fruit yield of watermelon and is tightly related to microbial functional diversity in organic substrates”
The same questions in other papers
fertilization · yield · Citrullus lanatus (watermelon)Results differ
10 papers in the same direction as this paper · 89 in the opposite direction
- positive
- positive
- positive
96 papers more in this group
See all 100 papers →fertilization · ecology: diversity · Citrullus lanatus (watermelon)Positive and negative results
1 in the opposite direction
- positive
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.