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 stakeholders 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 the theme Extended abstract under Enhancing Natural Resource Management
Productivity and Phosphorus Use Efficiencies of Soybean Genotypes on Fields of Differing Soil Fertility in Two Agroecological zones of Uganda
Abstract:
On- farm trials were conducted in the Northern moist farmlands
(NMF) and South and Eastern Lake Kyoga basin (SELKB)
agro-ecological zones of Uganda for two seasons of 2011 to
determine the yield response of soybean genotypes to
phosphorus and to identify genotypes that efficiently utilise P.
The treatments include different P levels (0, 5, 10, and 20 kg
ha- 1) with and without rhizobia. These were applied in four
fields each of good, medium and poor fertility each season.
Biomass yield and P enrichment of biomass at flowering, and
grain yield and maturity were determined. Genotype grain yield
responses were significantly (P<0.001) higher in the SELKB
compared to NMF. Largest yield responses to P were from
good fields in the NMF (28 to 229%) and medium fields in
SELKB (7-113%). On the basis of the phosphorus efficiency
ratios and biomass production, MAKSOY 1N and MNG 2:14
were identified as the most efficient P- utilising genotypes.
Les essais à la ferme ont été menés dans les terres agricoles
humides du Nord (NMF) et dans les zones agro-écologiques
de l’Ouganda au Sud et à l’Est du bassin du lac Kyoga (SELKB)
pendant deux saisons de l’année 2011 afin de déterminer la
réponsede rendement des génotypes de soja au phosphore et
d’identifier des génotypes qui utilisent efficacement le
Phosphore P. Les traitements comprennent des niveaux
différents de P (0, 5, 10, et 20 kg ha- 1) avec et sans rhizobiums.
Ceux-ci ont été appliqués dans quatre champs chacun d’une
bonne, moyenne et faible fertilité à chaque saison. Le rendement
en biomasse et l’enrichissement de P de la biomasse à la
floraison, et la maturité et le rendement en grain ont été
déterminés. Les réponses de rendement en grains des
génotypesétaient significativement (P <0,001) élevées dans le
SELKB par rapport aux NMF. Les plus grandes réponses de
rendementauphosphore P provenaient de bons champs dans les NMF (28 à 229%) et de champs moyens dans le SELKB
(7-113%). Sur la base des rapports d’efficacité du phosphore
et de la production de biomasse, MAKSOY 1N et MNG 2:14
ont été identifiés comme étant les génotypes les plus efficaces
utilisant le phosphore P.
Language:
Extended abstract under Enhancing Natural Resource Management
Date of publication:
2012
Country:
Region Focus:
East Africa
Collection:
RUFORUM Conferences and Workshops
Agris Subject Categories:
Agrovoc terms:
Additional keywords:
Licence conditions:
Open Access
Form:
Printed resource
Publisher:
Notes:
