Abstract
Effect of fertilization on forage yield,nitrogen uptake and mineral nitrogen in soil under sudangrass and ryegrass rotation regime for four years was studied through the located field experiment.The resulted demonstrated that NPK combination significantly increased fresh yield of sudangrass and ryegrass.Total yield in NPK treatment was the highest in all treatments in the period of 2005 and 2006,2006 and 2007,2007 and 2008,2008 and 2009,and were 312.9%,339.8%,231.7%,223.1% higher than that of PK treatment,and were 26.9%,20.2%,23.3%,25.9% higher than that of NK treatment,were 17.9%,17.3%,21.7%,23.2% higher than that of NP treatment,respectively.NPK combination improved N uptake of forage,and total N uptake in four periods were 500 kg/hm2,311 kg/hm2,450 kg/hm2,428 kg/hm2,respectively.NPK combination improved apparent use efficiency,agronomic efficiency and partial factor productivity from applied N,and were higher than that of NK and NP treatments.NPK combination assured N apparent balance in the rotation and reduce N surplus,and N surplus in NPK treatment for four years were lower than that of NK and NP treatments.In the sudangrass and ryegrass rotation,NO3--N and NH4+-N in NK,NP and NPK treatments were lower than that of CK and PK treatments,and NO3--N and NH4+-N in the sudangrass trial was higher than that of ryegrass trial.
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Claims 10
Claim · model-written summary
NPK significantly increased fresh yield of sudangrass and ryegrass.
- Taxon
- sudangrass and ryegrass
Lolium
Sorghum ×drummondiie0 - Treatment
- NPK combinatione0
- Outcome
- fresh yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPK combination significantly increased fresh yield of sudangrass and ryegrass”
Claim · model-written summary
NPK had the highest total yield across the four periods.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPK treatmente0
- Outcome
- Total yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total yield in NPK treatment was the highest in all treatments in the period of 2005 and 2006,2006 and 2007,2007 and 2008,2008 and 2009”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK total yield exceeded PK in the four periods by 312.9%, 339.8%, 231.7%, and 223.1%, respectively.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPKe1
- Outcome
- Total yielde2
- Direction
- highere0
- Value
- 312.9%,339.8%,231.7%,223.1%e0
- Comparator
- PK treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were 312.9%,339.8%,231.7%,223.1% higher than that of PK treatment”
e1“NPK combination significantly increased fresh yield of sudangrass and ryegrass”
e2“Total yield in NPK treatment was the highest in all treatments in the period of 2005 and 2006,2006 and 2007,2007 and 2008,2008 and 2009”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK total yield exceeded NK by 26.9%, 20.2%, 23.3%, and 25.9% over the four periods.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPKe1
- Outcome
- Total yielde2
- Direction
- highere0
- Value
- 26.9%,20.2%,23.3%,25.9%e0
- Comparator
- NK treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were 26.9%,20.2%,23.3%,25.9% higher than that of NK treatment”
e1“NPK combination significantly increased fresh yield of sudangrass and ryegrass”
e2“Total yield in NPK treatment was the highest in all treatments in the period of 2005 and 2006,2006 and 2007,2007 and 2008,2008 and 2009”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK total yield exceeded NP by 17.9%, 17.3%, 21.7%, and 23.2% over the four periods.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPKe1
- Outcome
- Total yielde2
- Direction
- highere0
- Value
- 17.9%,17.3%,21.7%,23.2%e0
- Comparator
- NP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were 17.9%,17.3%,21.7%,23.2% higher than that of NP treatment”
e1“NPK combination significantly increased fresh yield of sudangrass and ryegrass”
e2“Total yield in NPK treatment was the highest in all treatments in the period of 2005 and 2006,2006 and 2007,2007 and 2008,2008 and 2009”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK improved forage nitrogen uptake, with four period totals of 500, 311, 450 and 428 kg/hm2.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPK combinatione0
- Outcome
- N uptake of foragee0
- Direction
- improvede0
- Value
- 500 kg/hm2,311 kg/hm2,450 kg/hm2,428 kg/hm2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPK combination improved N uptake of forage,and total N uptake in four periods were 500 kg/hm2,311 kg/hm2,450 kg/hm2,428 kg/hm2,respectively”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK improved apparent nitrogen use efficiency, agronomic efficiency and partial factor productivity over NK and NP.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPK combinatione0
- Outcome
- apparent use efficiency,agronomic efficiency and partial factor productivity from applied Ne0
- Direction
- highere0
- Comparator
- NK and NP treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPK combination improved apparent use efficiency,agronomic efficiency and partial factor productivity from applied N,and were higher than that of NK and NP treatments”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
NPK reduced nitrogen surplus relative to NK and NP.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NPK treatmente0
- Outcome
- N surpluse0
- Direction
- lowere0
- Comparator
- NK and NP treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPK combination assured N apparent balance in the rotation and reduce N surplus,and N surplus in NPK treatment for four years were lower than that of NK and NP treatments”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
Soil nitrate and ammonium under NK, NP and NPK were lower than under CK and PK.
- Taxon
- sudangrass and ryegrassLoliumSorghum ×drummondiit0
- Treatment
- NK,NP and NPK treatmentse0
- Outcome
- NO3--N and NH4+-Ne0
- Direction
- lowere0
- Comparator
- CK and PK treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO3--N and NH4+-N in NK,NP and NPK treatments were lower than that of CK and PK treatments”
t0“Sudangrass and Ryegrass Rotation Regime”
Claim · model-written summary
Soil nitrate and ammonium were higher in sudangrass than ryegrass trials.
- Taxon
- sudangrassSorghum ×drummondiie0
- Outcome
- NO3--N and NH4+-Ne0
- Direction
- highere0
- Comparator
- ryegrass triale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO3--N and NH4+-N in the sudangrass trial was higher than that of ryegrass trial”
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