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 the theme of Enhancing Natural Resource Management.
Improving Soil Properties Through Use of Unburnt Local Limes in Acidic Soils of Burera District, Rwanda
Abstract:
This study was carried out at Rwerere Research Station located
in the highlands of Buberuka, Rwanda. Three local limes
(Musanze, Rusizi and Karongi) were evaluated in a randomized
complete block design (RCBD)) experiment established in
September 2011 rainy season. Baseline information was
established on soil properties and quality (CCE, Fineness factor,
ECCE, Acidity and moisture) of lime materials. Soil pH,
exchangeable Al and available phosphorus were monitored at
6, 12 and 16 weeks after lime application (WAP). However,
nitrogen and base saturation were analysed at 16WAP. Finding
showed that application of 2.8t ha-1 of Musanze unburnt local
lime and agricultural burnt lime had a similar effect on soil pH.
They increased soil pH by 0.62 and 0.61 units, respectively. A
lime application rate of 2.8t ha-1 of agricultural burnt lime,
Musanze and Rusizi unburned local limes increased soil
available phosphorus by 1.72, 1.71 and 1.65 mg/kg, respectively.
On the other hand, agricultural burnt lime and Musanze unburnt
local lime had a similar effect on Ca saturation. The application
of 1.4 and 2.8t ha-1 of agricultural burned lime and Musanze
unburnt local lime increased soil nitrogen by 0.12 and 0.24%of total nitrogen, respectively.
Cette étude a été réalisée à la station de recherche de Rwerere,
située dans les montagnes de Buberuka, au Rwanda. Trois
variétés de chaux locales (de Musanze, Rusizi et Karongi) ont
été évaluées dans une expérience de conception en blocs
complets aléatoire (RCBD) établie lors de la saison des pluies
de Septembre 2011. L’information de base a été établie sur les
propriétés et la qualité du sol (CCE, facteur de finesse, ECCE,
acidité et humidité) de matériaux en chaux. Le pH du sol, l’Al
échangeable et le phosphore disponible ont été suivis à 6, 12 et
16 semaines après l’application de la chaux (WAP). Cependant,
l’azote et la saturation en bases ont été analysés à 16 semaines après l’application de la chaux. Les résultats ont montré que
l’application de 2,8 t ha-1 de la chaux locale non calcinée de
Musanze et celle de la chaux vive agricole ont eu un effet
similaire sur le pH du sol. Elles ont augmenté le pH du sol de
0,62 et 0,61 unités, respectivement. Un taux d’épandage de la
chaux de 2,8 t ha-1 de la chaux vive agricole, des chaux locales
non calcinées de Musanze et de Rusizi a augmenté le phosphore
disponible dans le sol de 1,72, 1,71 et 1,65 mg / kg,
respectivement. Par contre, la chaux vive agricole et la chaux
locale non calcinée de Musanze ont eu un effet similaire sur la
saturation en Ca. L’épandage de 1,4 et 2,8 t ha-1 de la chaux
vive agricole et de la chaux non calcinée de Musanze ont
augmenté l’azote du sol de 0,12 et 0,24% de l’azote total,
respectivement.
Language:
English
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:
