Crop residue removal and nitrification inhibitor application as strategies to mitigate N2O emissions in sugarcane fields

2018 ◽  
Vol 119 ◽  
pp. 206-216 ◽  
Author(s):  
Leandro Carolino Gonzaga ◽  
João Luís Nunes Carvalho ◽  
Bruna Gonçalves de Oliveira ◽  
Johnny Rodrigues Soares ◽  
Heitor Cantarella
Agriculture ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 546
Author(s):  
Lisa Essich ◽  
Peteh Mehdi Nkebiwe ◽  
Moritz Schneider ◽  
Reiner Ruser

In order to quantify the reduction potential for nitrous oxide (N2O) release from arable soils through the removal of crop residues, we conducted an experiment after sugar beet (Beta vulgaris L.) harvest with three treatments: (i) ploughing of the crop residues (+CR:D), (ii) returning residues after ploughing on the surface (+CR:S), and (iii) removal of the residues and ploughing (−CR). N2O fluxes were measured over 120 days in south Germany. High positive correlations between N2O fluxes and the CO2 fluxes and soil nitrate contents suggested denitrification as the main N2O source. N2O emissions in +CR:D was higher than in +CR:S (2.39 versus 0.93 kg N2O−N ha−1 120 d−1 in +CR:D and +CR:S). Residue removal in −CR reduced the N2O emission compared to +CR:D by 95% and to +CR:S by 87%. We further conducted a meta-analysis on the effect of crop residue removal on N2O emissions, where we included 176 datasets from arable soils with mainly rain fed crops. The overall effect of residue removal showed a N2O reduction of 11%. The highest N2O reduction of 76% was calculated for the removal subgroup with C/N-ratio < 25. Neither the remaining C/N-ratio subgroups nor the grouping variables “tillage” or “residue quantity” differed within their subgroup.


2017 ◽  
Vol 72 (5) ◽  
pp. 97A-104A ◽  
Author(s):  
Humberto Blanco-Canqui ◽  
Charles Wortmann

2020 ◽  
Vol 55 (4) ◽  
pp. 462-468
Author(s):  
Hardev Sandhu ◽  
Ron Cherry ◽  
Mubashar Nadeem

Abstract A field trial was conducted to determine the effects of harvest method (green cane harvest versus preharvest burning) and different crop residue removal treatments on the populations of ground-inhabiting arthropod predators and Elasmopalpus lignosellus (Zeller) (Lepidoptera: Pyralidae) in the first ratoon crop. Neither preharvest burning nor percentage crop residue removal after green cane harvest had any significant effect on the numbers of ants (Hymenoptera: Formicidae) (F = 1.00; df = 4; P = 0.412) or spiders (Araneae) (F = 0.08; df = 4; P = 0.921) captured in pitfall traps. In contrast, crop residue levels remaining after green cane harvest significantly impacted E. lignosellus damage to the ratoon crop, with increased damage associated with lower levels of residue. Removal of ≥66% of the crop residue caused a significant (F = 132.68; df = 3; P &lt; 0.001) increase in E. lignosellus damage that would likely reduce sugarcane yield, while 33% of the residue could be removed without increasing damage. Overall, our data indicate that green cane harvesting will not affect arthropod ground predators but may reduce the risk of E. lignosellus damage.


2006 ◽  
Vol 91 (1-2) ◽  
pp. 15-21 ◽  
Author(s):  
Stephen D. Sparrow ◽  
Carol E. Lewis ◽  
Charles W. Knight

2019 ◽  
Vol 83 (5) ◽  
pp. 1399-1409 ◽  
Author(s):  
Perik Seiz ◽  
Ivan Guzman-Bustamante ◽  
Rudolf Schulz ◽  
Torsten Müller ◽  
Reiner Ruser

2012 ◽  
Vol 161 ◽  
pp. 27-38 ◽  
Author(s):  
W.N. Smith ◽  
B.B. Grant ◽  
C.A. Campbell ◽  
B.G. McConkey ◽  
R.L. Desjardins ◽  
...  

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