Abstract
In Japan, the soils in tea fields are further acidified by heavy application of nitrogen fertilizer. In the long-term fertilizer application fields, available P, total carbon and nitrogen contents had the highest in the Multi-F plot, followed by the 98-D.F plot and the smallest in the 95-D.F plot. Soil enzymes activity had the highest the Multi-F plot. It was estimated that all of the enzyme activity were often corresponded with the results of the organic matter and the available P contents. The number of fungi under acidic condition had the close relation since change of these enzymes activity. It was evident that fungi were participated in carbon, nitrogen and phosphorus metabolism in acid tea field soils. It became clear that the number of fungi and enzymes activity decreased corresponding well with the available P and the organic matter contents depend on fertilization management. Moreover in case of qualities of green tea, generally difference between experimental plots and Multi-F plot were to be small. It was indicated that influence to the yields by curtailment of the amount of nitrogen fertilization was small.
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Claims 8
Claim · model-written summary
Available phosphorus and soil carbon and nitrogen were highest in Multi-F and lowest in 95-D.F.
Verbatim
e0“available P, total carbon and nitrogen contents had the highest in the Multi-F plot, followed by the 98-D.F plot and the smallest in the 95-D.F plot.”
t0“Tea Leaf Yield”
Claim · model-written summary
Soil enzyme activity was highest in Multi-F.
Verbatim
e0“Soil enzymes activity had the highest the Multi-F plot.”
t0“Tea Leaf Yield”
Claim · model-written summary
Soil enzyme activity corresponded with organic matter and available phosphorus.
Not reportedDirection
Verbatim
e0“all of the enzyme activity were often corresponded with the results of the organic matter and the available P contents.”
t0“Tea Leaf Yield”
Claim · model-written summary
Fungal number was associated with changes in soil enzyme activity.
Not reportedDirection
Verbatim
e0“The number of fungi under acidic condition had the close relation since change of these enzymes activity.”
t0“Tea Leaf Yield”
Claim · model-written summary
Fungi participated in carbon, nitrogen and phosphorus metabolism in acid tea field soils.
Verbatim
e0“fungi were participated in carbon, nitrogen and phosphorus metabolism in acid tea field soils.”
Claim · model-written summary
Fungal abundance and enzyme activity fell with available phosphorus and organic matter under fertilization management.
Verbatim
e0“the number of fungi and enzymes activity decreased corresponding well with the available P and the organic matter contents depend on fertilization management.”
t0“Tea Leaf Yield”
Claim · model-written summary
Green tea quality differed little among experimental plots and Multi-F.
Verbatim
e0“difference between experimental plots and Multi-F plot were to be small.”
e1“qualities of green tea”
Claim · model-written summary
Reduced nitrogen fertilization had little effect on tea yield.
- Taxon
- Teat0
- Treatment
- curtailment of the amount of nitrogen fertilizatione0
- Outcome
- yieldse0
- Direction
- smalle0
Not reportedComparator
Verbatim
e0“influence to the yields by curtailment of the amount of nitrogen fertilization was small.”
t0“Tea Leaf Yield”
The same questions in other papers
fertilization · yield · Camellia sinensis (black tea)Positive and negative results
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- positive
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See all 28 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.