Abstract
The utility of alumina-buffered phosphorus (Al-P) fertilizers for supplying phosphorus (P) to bell pepper ( Capsicum annuum L. ) in soils with low-P availability was evaluated. Plants were grown at low-P fertility (about 100 kg·ha –1 , low-P control; LPC), with conventional P fertilization (205-300 kg·ha –1 annually, fertilizer control; FC), or with one of two Al-P sources (Martenswerke or Alcoa) in 2001–03. The two Al-P fertilizers were applied in 2001; no additional material was applied in 2002-03. Plants grown with Martenswerke Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown with conventional P fertilizer in both 2002 and 2003 seasons. Bell pepper grown with Alcoa Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown without P fertilizer in both seasons. Alcoa Al-P continuously released bioavailable P for 2 years between 2001 and 2002, while Martenswerke Al-P continuously released bioavailable P at least 3 years between 2001 and 2003. These results indicate that some formulations of Al-P can serve as long-term P sources for field vegetable production.
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Claims 9
Claim · model-written summary
Martenswerke Al-P gave similar shoot and root dry weight and root length to conventional phosphorus fertilization in 2002 and 2003.
Verbatim
e0“Plants grown with Martenswerke Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown with conventional P fertilizer in both 2002 and 2003 seasons”
e1“to bell pepper ( Capsicum annuum L. )”
Claim · model-written summary
Martenswerke Al-P gave similar leaf phosphorus concentration to conventional fertilizer.
Verbatim
e0“Plants grown with Martenswerke Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown with conventional P fertilizer in both 2002 and 2003 seasons”
e1“to bell pepper ( Capsicum annuum L. )”
Claim · model-written summary
Martenswerke Al-P gave similar fruit yield to conventional phosphorus fertilizer.
Verbatim
e0“Plants grown with Martenswerke Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown with conventional P fertilizer in both 2002 and 2003 seasons”
e1“to bell pepper ( Capsicum annuum L. )”
Claim · model-written summary
Alcoa Al-P gave similar shoot and root dry weight and root length to no phosphorus fertilizer.
Verbatim
e0“Bell pepper grown with Alcoa Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown without P fertilizer in both seasons”
Claim · model-written summary
Alcoa Al-P gave similar leaf phosphorus concentration to no phosphorus fertilizer.
Verbatim
e0“Bell pepper grown with Alcoa Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown without P fertilizer in both seasons”
Claim · model-written summary
Alcoa Al-P gave similar fruit yield to no phosphorus fertilizer.
Verbatim
e0“Bell pepper grown with Alcoa Al-P had similar shoot dry weight, root dry weight, root length, leaf P concentration, and fruit yield compared with plants grown without P fertilizer in both seasons”
Claim · model-written summary
Alcoa Al-P released bioavailable phosphorus continuously for two years.
Not reportedDirection
Verbatim
e0“Alcoa Al-P continuously released bioavailable P for 2 years between 2001 and 2002”
e1“to bell pepper ( Capsicum annuum L. )”
Claim · model-written summary
Martenswerke Al-P released bioavailable phosphorus continuously for at least three years.
Not reportedDirection
Verbatim
e0“Martenswerke Al-P continuously released bioavailable P at least 3 years between 2001 and 2003”
e1“to bell pepper ( Capsicum annuum L. )”
Claim · model-written summary
Some Al-P formulations may serve as long-term phosphorus sources for field vegetable production.
Verbatim
e0“some formulations of Al-P can serve as long-term P sources for field vegetable production”
The same questions in other papers
aluminium atom · growth · Capsicum annuum (sweet pepper)Results agree
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phosphorus · yield · Capsicum annuum (sweet pepper)Results differ
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1 paper in the same direction as this paper · 1 in the opposite direction
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phosphorus · growth · Capsicum annuum (sweet pepper)Positive and negative results
2 papers in the same direction as this paper · 13 in the opposite direction
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See all 16 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.