Abstract
Pre-transplanting phosphorus application is a fertilization method that can reduce phosphorus (P) fertilization of the field and increase P use efficiency. We investigated whether P use efficiency can be increased further by combining pre-transplanting phosphorus application and the green manure practice, using cabbage as a test plant in a field experiment performed from 2006 to 2008. The pre-transplanting phosphorus application successfully reduced P fertilization of the field to half without any yield losses in 2006 and 2008. However, growth and yield could not be maintained with the pre-transplanting phosphorus application when P fertilization was halved in 2007. Differences among seasons and discrepancies in the results compared to previous studies may have arisen from the differences in the field management and the nursery soil used. No benefits of green manure in terms of the subsequent cabbage yield were detected. Consequently, there was no positive effect of the combination of pre-transplanting phosphorus application and incorporation of green manure. Studies with mycorrhizal plants as test plants may be necessary to verify the mechanism of enhanced P supply by the incorporation of green manure, and to examine any potential benefit of combining green manure and pre-transplanting phosphorus application practices.
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Claims 5
Claim · model-written summary
Pre-transplanting phosphorus application halved field phosphorus fertilization without cabbage yield loss in 2006 and 2008.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- pre-transplanting phosphorus applicatione1
- Outcome
- P fertilization of the fielde1
- Direction
- reducede1
- Value
- halfe1
- Qualifier
- without any yield losses in 2006 and 2008e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using cabbage as a test plant in a field experiment performed from 2006 to 2008.”
e1“The pre-transplanting phosphorus application successfully reduced P fertilization of the field to half without any yield losses in 2006 and 2008.”
Claim · model-written summary
Cabbage growth was not maintained when phosphorus fertilization was halved with pre-transplanting application in 2007.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- pre-transplanting phosphorus applicatione1
- Outcome
- growthe1
- Direction
- could not be maintainede1
- Qualifier
- when P fertilization was halved in 2007e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using cabbage as a test plant in a field experiment performed from 2006 to 2008.”
e1“growth and yield could not be maintained with the pre-transplanting phosphorus application when P fertilization was halved in 2007.”
Claim · model-written summary
Cabbage yield was not maintained when phosphorus fertilization was halved with pre-transplanting application in 2007.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- pre-transplanting phosphorus applicatione1
- Outcome
- yielde1
- Direction
- could not be maintainede1
- Qualifier
- when P fertilization was halved in 2007e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using cabbage as a test plant in a field experiment performed from 2006 to 2008.”
e1“growth and yield could not be maintained with the pre-transplanting phosphorus application when P fertilization was halved in 2007.”
Claim · model-written summary
Green manure produced no detected benefit for subsequent cabbage yield.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- green manuree0
- Outcome
- subsequent cabbage yielde0
- Direction
- No benefitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No benefits of green manure in terms of the subsequent cabbage yield were detected.”
Claim · model-written summary
Combining pre-transplanting phosphorus application with green manure had no positive effect.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Treatment
- combination of pre-transplanting phosphorus application and incorporation of green manuree0
- Outcome
- positive effecte0
- Direction
- no positive effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no positive effect of the combination of pre-transplanting phosphorus application and incorporation of green manure.”
e1“using cabbage as a test plant in a field experiment performed from 2006 to 2008.”
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