Accounting for differences between crops and regions reduces estimates of nitrate leaching from nitrogen-fertilized soils · Knowledge Library

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Accounting for differences between crops and regions reduces estimates of nitrate leaching from nitrogen-fertilized soils · Knowledge Library

crop yield

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increase
nitrification inhibitors (NI) vs. without inhibitorssignificant · Global field measurements across23countries · Paired field yield;95%bootstrapCI excludes0.
Numbers
- percent_change 8.57 [1.44, 17.1], n = 16
Source · p. 3
“yield increases were observed”
Source · p. 3
“NI (8.57%, 1.44-17.1%)”
increase
UI + NI vs. without inhibitorssignificant · Global field measurements across23countries · CombinedUI+NI versuswithoutinhibitors;95%bootstrapCI excludes0.
Numbers
- percent_change 14.7 [6.93, 26.3], n = 6
Source · p. 3
“yield increases were observed”
Source · p. 3
“UI + NI (14.7%”
increase
deep fertilizer placement vs. surface broadcastingsignificant · Global field measurements across23countries · Deepplacementversussurfacebroadcasting;95%bootstrapCI excludes0.
Numbers
- percent_change 22.3 [17.8, 29.8], n = 3
Source · p. 3
“The most notable yield increases were observed with deep fertilizer”
Source · p. 3
“placement (22.3%, 17.8-29.8%)”
increase
crop residue incorporation vs. no residue incorporationsignificant · Global field measurements across23countries · Paired field yield;95%bootstrapCI excludes0.
Numbers
- percent_change 3.51 [0.83, 6.55], n = 43
Source · p. 3
“yield increases were observed”
Source · p. 3
“crop residue incorporation (3.51%, 0.83-6.55%)”
increase
drip irrigation vs. conventional irrigation controlsignificant · Global field measurements across23countries · Paired irrigationyield;exactcontrolmethodsSupplementaryTable2unavailable;95%CIexcludes0.
Numbers
- percent_change 6.57 [0.43, 12.6], n = 14
Source · p. 3
“yield increases were observed”
Source · p. 3
“drip irrigation (6.57%, 0.43-12.6%)”
increase
amendments, pooled vs. corresponding controls without amendments, pooledsignificant · Global field measurements across23countries · Explicit pooled amendments contrast, Fig.6b: 91 paired observations, positive 95% bootstrap CI excludes zero. Numeric pooled effect and CI endpoints not printed in text; no chart-derived means. General Discussion p.6 supports the pooled yield headline; not a claim that each amendment separately increased yield.
Source · p. 6
“Beyond reducing NO3− leaching, these practices also have the potential to significantly increase crop yields”