FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2039032368> ?p ?o ?g. }

• W2039032368 endingPage "14" @default.
• W2039032368 startingPage "1" @default.
• W2039032368 abstract "Abstract Results of 240 annual N fertilizer trials in 1991–2007 in spring and winter cereals are presented. On average, spring barley and oat yields increased little beyond 120 kg N ha−1 in fertilizer. Somewhat higher figures were found for spring and winter wheat. Regression equations for yield and N uptakes in grain and straw were derived, related to N fertilizer input and the yield level in individual trials (indicator of yield expectancy). These equations accounted for 90% of the variation in yield and 80% of that in N uptake. Quadratic N responses were significant in all cases, as were interactions between N responses and yield level. They were verified with data from 27 separate trials performed in 2008–2010. The yield equations were used to calculate economically optimum N fertilizer levels with varying ratios of product price to fertilizer cost at contrasting levels of yield. The optimum N fertilizer level for barley and oats was found to increase by 8.3 kg N ha−1 per Mg increase in expected yield. The equivalent figure in wheat was 16.3 kg N ha−1. Optimum N fertilizer levels decreased by 4.1 and 6.7 kg N ha−1, for barley/oats and wheat respectively, per unit increase in the cost/price ratio. The equations for N uptake were used to calculate simple N balances between fertilizer input and removal in crop products. Large N surpluses were indicated at low levels of yield expectancy, but the surplus declined markedly with increasing yield level, despite greater N fertilizer inputs at high yield. Calculations made for national average yield levels in recent years showed N surpluses of 50–60 kg N ha−1 when only grain is removed and 25–40 kg N ha−1 when straw is removed also. Limiting N input to obtain zero balance reduces yields considerably at average levels of yield expectancy." @default.
• W2039032368 created "2016-06-24" @default.
• W2039032368 creator A5013181573 @default.
• W2039032368 creator A5056444765 @default.
• W2039032368 creator A5087578751 @default.
• W2039032368 date "2011-10-13" @default.
• W2039032368 modified "2023-09-27" @default.
• W2039032368 title "Economic and environmental optimization of nitrogen fertilizer recommendations for cereals in Norway" @default.
• W2039032368 cites W1481351420 @default.
• W2039032368 cites W1971668262 @default.
• W2039032368 cites W1979041988 @default.
• W2039032368 cites W1988438477 @default.
• W2039032368 cites W1989228030 @default.
• W2039032368 cites W1998429645 @default.
• W2039032368 cites W2004702706 @default.
• W2039032368 cites W2006622204 @default.
• W2039032368 cites W2008869744 @default.
• W2039032368 cites W2017007384 @default.
• W2039032368 cites W2023133449 @default.
• W2039032368 cites W2048476850 @default.
• W2039032368 cites W2053086735 @default.
• W2039032368 cites W2118650812 @default.
• W2039032368 cites W2142173593 @default.
• W2039032368 cites W2153038783 @default.
• W2039032368 cites W2154268662 @default.
• W2039032368 cites W2157207350 @default.
• W2039032368 cites W2167477003 @default.
• W2039032368 cites W2513642305 @default.
• W2039032368 cites W4242845669 @default.
• W2039032368 doi "https://doi.org/10.1080/09064710.2011.629620" @default.
• W2039032368 hasPublicationYear "2011" @default.
• W2039032368 type Work @default.
• W2039032368 sameAs 2039032368 @default.
• W2039032368 citedByCount "2" @default.
• W2039032368 countsByYear W20390323682019 @default.
• W2039032368 crossrefType "journal-article" @default.
• W2039032368 hasAuthorship W2039032368A5013181573 @default.
• W2039032368 hasAuthorship W2039032368A5056444765 @default.
• W2039032368 hasAuthorship W2039032368A5087578751 @default.
• W2039032368 hasBestOaLocation W20390323682 @default.
• W2039032368 hasConcept C134121241 @default.
• W2039032368 hasConcept C137580998 @default.
• W2039032368 hasConcept C140793950 @default.
• W2039032368 hasConcept C178790620 @default.
• W2039032368 hasConcept C185592680 @default.
• W2039032368 hasConcept C191897082 @default.
• W2039032368 hasConcept C192562407 @default.
• W2039032368 hasConcept C2779587293 @default.
• W2039032368 hasConcept C2780560099 @default.
• W2039032368 hasConcept C2993605384 @default.
• W2039032368 hasConcept C33923547 @default.
• W2039032368 hasConcept C537208039 @default.
• W2039032368 hasConcept C6557445 @default.
• W2039032368 hasConcept C86803240 @default.
• W2039032368 hasConceptScore W2039032368C134121241 @default.
• W2039032368 hasConceptScore W2039032368C137580998 @default.
• W2039032368 hasConceptScore W2039032368C140793950 @default.
• W2039032368 hasConceptScore W2039032368C178790620 @default.
• W2039032368 hasConceptScore W2039032368C185592680 @default.
• W2039032368 hasConceptScore W2039032368C191897082 @default.
• W2039032368 hasConceptScore W2039032368C192562407 @default.
• W2039032368 hasConceptScore W2039032368C2779587293 @default.
• W2039032368 hasConceptScore W2039032368C2780560099 @default.
• W2039032368 hasConceptScore W2039032368C2993605384 @default.
• W2039032368 hasConceptScore W2039032368C33923547 @default.
• W2039032368 hasConceptScore W2039032368C537208039 @default.
• W2039032368 hasConceptScore W2039032368C6557445 @default.
• W2039032368 hasConceptScore W2039032368C86803240 @default.
• W2039032368 hasLocation W20390323681 @default.
• W2039032368 hasLocation W20390323682 @default.
• W2039032368 hasOpenAccess W2039032368 @default.
• W2039032368 hasPrimaryLocation W20390323681 @default.
• W2039032368 hasRelatedWork W208423802 @default.
• W2039032368 hasRelatedWork W2348293168 @default.
• W2039032368 hasRelatedWork W2352800576 @default.
• W2039032368 hasRelatedWork W2359248232 @default.
• W2039032368 hasRelatedWork W2366351963 @default.
• W2039032368 hasRelatedWork W2373221625 @default.
• W2039032368 hasRelatedWork W2379108524 @default.
• W2039032368 hasRelatedWork W2380472571 @default.
• W2039032368 hasRelatedWork W2381381229 @default.
• W2039032368 hasRelatedWork W2992572975 @default.
• W2039032368 isParatext "false" @default.
• W2039032368 isRetracted "false" @default.
• W2039032368 magId "2039032368" @default.
• W2039032368 workType "article" @default.