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000904456 0247_ $$2doi$$a10.1016/j.fcr.2021.108174
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000904456 1001_ $$0P:(DE-Juel1)IHRS-BioSoft-20911$$aSeidel, Claus A. M.$$b0$$eCorresponding author
000904456 245__ $$aCrop response to P fertilizer omission under a changing climate - Experimental and modeling results over 115 years of a long-term fertilizer experiment
000904456 260__ $$aAmsterdam$$bElsevier$$c2021
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000904456 520__ $$aPhosphorus (P) is an essential plant nutrient. However, our understanding of the complex interactions between soil P availability, environment, management and crop growth is still limited. We used unique historic and recent soil and crop data spanning more than a century combined with a process-based crop model to analyze the impact of P fertilizer omission and P fertilization on the biomass production of five crops. The long-term field experiment at Dikopshof, Germany, was established in 1904 with a 5-year crop rotation of sugar beet, winter wheat, winter rye, clover and oat/potato (potato replaced oat in 1953) on a fertile Luvisol. Averaged over the period from 1906 to 2018, the yield loss due to P omission was low for winter wheat and winter rye (7–8 %). In contrast, yield losses for sugar beet, clover and potato were relatively high (15–24 %). The yield loss from P fertilizer omission in comparison to the reference treatment (rotation mean excluding oat/potato) increased until the middle of the last century from 7% to 18 %, but subsequently decreased to 13 %. Trend and correlation analyses suggest that this decrease was related to an increase in air temperatures in especial during spring and a lower yield loss under P omission. Crop model simulations showed decreasing topsoil organic carbon concentrations after the 1930ies as manure was discontinued in 1942 but also due to increasing air temperatures. The increase in plant-available topsoil P concentrations during the last decades was one of the main factors offsetting yield losses despite P fertilizer omission. Our study suggests that climate change and, in particular, a marked increase in temperature since the middle of the last century most likely influenced soil P dynamics with a significant impact on crop production.
000904456 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
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000904456 7001_ $$0P:(DE-HGF)0$$aGaiser, T.$$b1
000904456 7001_ $$0P:(DE-Juel1)145477$$aAhrends, H. E.$$b2
000904456 7001_ $$0P:(DE-HGF)0$$aHüging, H.$$b3
000904456 7001_ $$0P:(DE-Juel1)176309$$aSiebert, S.$$b4
000904456 7001_ $$0P:(DE-HGF)0$$aBauke, S. L.$$b5
000904456 7001_ $$0P:(DE-HGF)0$$aGocke, M. I.$$b6
000904456 7001_ $$0P:(DE-Juel1)166452$$aKoch, M.$$b7
000904456 7001_ $$0P:(DE-HGF)0$$aSchweitzer, K.$$b8
000904456 7001_ $$0P:(DE-HGF)0$$aSchaaf, G.$$b9
000904456 7001_ $$0P:(DE-HGF)0$$aEwert, F.$$b10
000904456 773__ $$0PERI:(DE-600)2012484-3$$a10.1016/j.fcr.2021.108174$$gVol. 268, p. 108174 -$$p108174 -$$tField crops research$$v268$$x0378-4290$$y2021
000904456 8564_ $$uhttps://juser.fz-juelich.de/record/904456/files/Seidel_et_al_2020_resubmission_v1_changes_untracked.pdf$$yPublished on 2021-05-15. Available in OpenAccess from 2023-05-15.
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