Abstract
Improvements in nitrogen use efficiency can be achieved through fertilizer management strategies that capitalize on nutrient synergies. However, limited research on synergies between nitrogen, sulfur, and calcium complicates understanding causal links and developing sustainable management. In this regard, the effects of different nitrogen sources on productivity and nitrogen use efficiency in Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.)), along with their impacts on forage quality and secondary production, were investigated. Treatments included: Urea (46% N), ammonium nitrate (NH4NO3; 32% N), ammonium nitrate supplemented with calcium and sulfur (NH4NO3 (+), 27% N + 5% Ca + 3.7% S), and control treatment with no N application. The application of fertilizers that combine nitrogen with calcium and sulfur enhances primary production in both winter and summer pastures. Fertilization with NH4NO3 (+) increased nitrogen use efficiency by 125% in Italian ryegrass compared to NH4NO3. However, within the framework of rotatinuous grazing management principles, optimizing plant nitrogen use efficiency does not necessarily lead to a better forage quality or animal performance. These findings highlight that using fertilizers that promote synergies among nutrients, such as the combination of nitrogen with calcium and sulfur, can bring benefits to the sustainability of pasture-based livestock production systems.
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Claims 4
Claim · model-written summary
Fertilizers combining nitrogen with calcium and sulfur enhanced primary production in winter and summer pastures.
- Taxon
- Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))
Lolium multiflorum
Cenchrus americanuse2 - Treatment
- fertilizers that combine nitrogen with calcium and sulfure0
- Outcome
- primary productione0
- Direction
- enhancese0
- Setting
- Southern Brazilt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of fertilizers that combine nitrogen with calcium and sulfur enhances primary production in both winter and summer pastures”
e2“Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))”
t0“Effects of Nitrogen Sources on Primary and Secondary Production from Annual Temperate and Tropical Pastures in Southern Brazil”
Claim · model-written summary
Fertilization with NH4NO3 (+) increased nitrogen use efficiency by 125% in Italian ryegrass compared with NH4NO3.
- Taxon
- Italian ryegrassLolium multiflorume1
- Treatment
- Fertilization with NH4NO3 (+)e1
- Outcome
- nitrogen use efficiencye1
- Direction
- increasede1
- Value
- 125%e1
- Comparator
- NH4NO3e1
- Setting
- Southern Brazilt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fertilization with NH4NO3 (+) increased nitrogen use efficiency by 125% in Italian ryegrass compared to NH4NO3”
t0“Effects of Nitrogen Sources on Primary and Secondary Production from Annual Temperate and Tropical Pastures in Southern Brazil”
Claim · model-written summary
Optimizing plant nitrogen use efficiency did not necessarily lead to better forage quality or animal performance.
- Taxon
- Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))Lolium multiflorumCenchrus americanuse2
- Treatment
- optimizing plant nitrogen use efficiencye3
- Outcome
- forage quality or animal performancee3
- Direction
- no_changeinferrede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))”
e3“optimizing plant nitrogen use efficiency does not necessarily lead to a better forage quality or animal performance”
Claim · model-written summary
Fertilizers that promote nutrient synergies, such as nitrogen combined with calcium and sulfur, can benefit the sustainability of pasture-based livestock production systems.
- Taxon
- Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))Lolium multiflorumCenchrus americanuse2
- Treatment
- fertilizers that promote synergies among nutrientse4
- Outcome
- benefits to the sustainability of pasture-based livestock production systemse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Italian ryegrass (Lolium multiflorum Lam.) and pearl millet (Pennisetum glaucum (L.))”
e4“using fertilizers that promote synergies among nutrients, such as the combination of nitrogen with calcium and sulfur, can bring benefits to the sustainability of pasture-based livestock production systems”
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