AbstractŠima T., Nozdrovický L., Krištof K., Krupička J., 2014. Impact of the size of nitrogen fertiliser application rate on N 2 O flux. Res. Agr. Eng., 60: 24-29.The application rate of a nitrogen fertiliser is one of the most important factors that affect the nitrous oxide (N 2 O) flux. Calk ammonium nitrate with 27% nitrogen content was spread by a fertiliser spreader VICON RS-L connected with a tractor Zetor 16145 and incorporated into the soil by a power harrow Pöttinger Lion 301 six hours after spreading. Monitoring points were selected based on the size of application rate 0, 100, 200 and 300 kg/ha and were measured 7, 14, 21 and 28 days after fertiliser application and incorporation into the soil. Nitrous oxide emissions were measured by a photoacoustic field gas monitor INNOVA 1412 with a multipoint sampler INNOVA 1309. Based on the data obtained, there were found statistically significant differences among time intervals and among the size of the application rate at a 95.0% confidence level. Results have shown impacts of the size of fertiliser application rate and time interval after fertilisation on nitrous oxide flux.
AbstractŠima T., Dubeová M., 2013. Eff ect of crop residues on CO 2 fl ux in the CTF system during soil tillage by a disc harrow Lemken Rubin 9. Res. Agr. Eng., 59 (Special Issue): S15-S21.Carbon dioxide is one of the most important greenhouse gases. Agriculture, especially soil tillage, contributes to CO 2 emissions signifi cantly. Th e aim of the paper was the comparison of the amounts of carbon dioxide emissions released from the soil into the atmosphere depending on the controlled traffi c farming (CTF) and crop residues. Th ree variants of the experiment were realised: before the soil tillage, immediately after the soil tillage, and seven days after the soil tillage. Th e soil tillage was carried out after the harvest of winter wheat by disc harrow Lemken Rubin 9 with a tractor John Deere 8230 on the loamy soil. Th e monitoring points were selected in parts of the fi eld with and without the crop residues and in traffi cked and non-traffi cked areas. Th e CTF system aff ects CO 2 fl ux, the amounts of emissions from the non-traffi cked areas being higher than those from the traffi cked areas. Th e crop residues left on the fi eld cause a decrease of CO 2 fl ux. Th e incorporation of crop residues causes an increase of CO 2 fl ux.
Fertilizers are an important tool to maintain soil fertility and as an enhancement for the efficient crop production. The system of fertilizers application affects the final dose and commonly causes local overdosing or insuficient spatial distribution of fertilizers which are a very important source of nitrous oxide emissions (N 2 O) from the soil into the atmospher observation of such phenomenon are among the key factors defining environmental impacts of agriculture. A study was conducted to observe the effect of application dose of fertilizer on N 2 O emission from the soil. CAN (Calcium ammonium nitrate -consist of 27 % nitrogen) was spread by a fertiliser spreader Kuhn Axera 1102 H-EMC aggregated with a tractor John Deere 6150 M. Incorporation of fertilizer into the soil was done by power harrow Pöttinger Lion 302. The application dose was set at 0, 100, 200 and 300 kg. ha -1 while monitoring points were selected at the base of this application doses in respective places. Measurements were conducted at time intervals 7, 14, 21 and 28 days after fertiliser application and following incorporation. Nitrous oxide emissions were measured by field gas monitor set INNOVA consisting of a photoacoustic gas monitor INNOVA 1412 and a multipoint sampler INNOVA 1309. Statistically significant differences was found among time intervals and among the application dose (p > 0.05). It was observed that the application dose of selected fertilizers has the direct effect on nitrous oxide (N 2 O) emissions released from soil into the atmosphere. An increase of greenhouse gas emissions was observed in range from 0.83 to 152.33 %. It can be concluded that the local overdose of fertilizers negatively affects environmental impact of agricultural practices at greenhouse gas emissions (GHGs).
Dubeová M., Gálik R., Mihina Š., Šima T., 2013. Ammonia concentration in farrowing pens with permanent limited range of motion for lactating sows. Res. Agr. Eng., 59 (Special Issue): S9-S14.Livestock production signifi cantly contributes to emissions of polluting gases emissions like ammonia (NH 3 ) and greenhouse gases. Pig production is globally responsible for about 15% of ammonia emissions. Th e aims of this paper were the comparison of the ammonia concentrations in the farrowing pens with permanent limited range of motion between the zones of lactating sows and piglets and the impact of the day hour on ammonia concentration in this place. Photoacoustic infrared measuring devices INNOVA were used.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.