The 2012 RUFORUM Biennial Conference is the third in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholers in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. The third Biennial Conference was attended by 657 participants.This record contains an extended abstract accepted under Enhancing Natural Resource Management
The Effectiveness of Lignite Coal and Biochar in Reducing Nitrogen (N) Losses from Cattle Feedlot Manure
Abstract:
This study was conducted at the University of Melbourne
Burnley campus aimed at investigating the effectiveness of
lignite coal and biochar in reducing nitrogen losses from feedlot
cattle manure. Forty (40) kg of manure was mixed with either
6kg of biochar or lignite and the other 40kg of manure were
used as control. These were put in 220 drum replicated 3 times
where 50g of N in form of urea were sprayed in them. The
concentration of urea, NH4
+ and NO3
-, and emissions of N2O
and NH3 were monitored for 21 days in each drum to assess
nitrogen loss. At the end of the experiment (3 weeks), biochar
and lignite reduced ammonia loss by 38% and 72% respectively
as compared to the control. However biochar increased N2O
flux 10 fold as compared to that of the control.
Cette étude a été menée sur le campus de Burnley à l’Université
de Melbourne. Elle a visé à étudier l’efficacité de la lignite et
du biochar dans la réduction des pertes d’azote provenant du
fumier de bovins des abattoirs. Quarante (40) kg de fumier ont
été mélangés avec soit 6 kg de biochar ou de lignite et les 40
autres kg de fumier ont été utilisés comme témoin. Ceux-ci ont
été mis dans un tambour de 220 répliqué 3 fois où 50g d’ N
sous forme d’urée ont été pulvérisés sur eux. La concentration
de l’urée, NH4+ et NO3-, et les émissions de N2O et NH3 ont
été suivis pendant 21 jours dans chaque tambour pour évaluer
la perte d’azote. A la fin de l’expérience (3 semaines), le biochar
et la lignite ont réduit la perte d’ammoniac de 38% et 72%
respectivement par rapport au témoin. Cependant le biochar a
augmenté 10 fois le flux de N2O par rapport à celui du témoin.
Language:
English
Extended abstracts submitted under Enhancing Natural Resource Management
Date of publication:
2012
Country:
Region Focus:
East Africa
Collection:
RUFORUM Conferences and Workshops
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Licence conditions:
Open Access
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Form:
Printed resource
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E_ISSN:
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