CCARDESA Content

The Centre for Coordination of Agricultural Research and Development for Southern Africa (CCARDESA) is a sub-regional organization that was established by SADC Member States (MS) to coordinate agricultural research and development (AR&D) among its 16 Member States. With its headquarters situated in Gaborone, Botswana, CARDESSA‘s vision is to assist member states to attain food security and build a prosperous Southern African region with vibrant rural livelihoods. Its mission is to promote innovative research, technology generation and adoption for sustainable agricultural development through affective partnerships and capacity building.

CCARDESA therefore has a broad mandate to assist its Member States in coordinating their agricultural research and development and also to empower smallholder farmers to improve their product efficiency and generate increased incomes through active market engagement while navigating the current polycrises (Covid-19, worsening climatic conditions, worsening economic growth and the Ukraine war). All of these have negatively affected the global food security.

To mitigate against these negative effects, CCARDESA is supporting smallholder farmers to adopt sustainable agricultural practices, particularly in response to the challenges posed by worsening climatic conditions. However, the main issue is that although CCARDESA has active outputs on areas of KM and information dissemination of their products, there is a serious limitation in audio- visuals as most of their products are in paper format which has been proven not to be as effective. Furthermore, the Internet of Things’ (IoT) main tenet is on digitalization and this is a better way to respond while bridging Africa’s youth demographic dividend.

Induced plant mutagenesis is a powerful technique to create genetic variation for agronomic traits and drought tolerance selection programs. The objective of this study was to determine the response of elite sorghum (Sor- ghum bicolor [L.] Moench) lines developed via gamma-radiation for grain yield, component traits, and drought tolerance to select best performing lines for cultivation in water-stressed environments. Ten newly developed mutant lines and four check varieties were evaluated in two growing seasons under drought-stressed (DS) and non-stressed (NS) conditions in Namibia. Mutant lines were evaluated using a factorial experiment laid out in a randomized complete block design with three replications in custom-made rainout-shelter facility. Data on grain yield and yield-related traits were collected and drought tolerance selection indices were computed using mean genotype yield under non-stressed condition and drought-stressed condition. Data were subjected to standard analysis of variance, correlation and principal component analyses. The interaction effect of genotype × drought stress × season was non-significant for most assessed traits suggesting the relatively stable performance of the test lines for selection. Grain yield response of test genotypes varied from 0.55 to 2.27 t/ha under DS and 1.84 to 4.05 t/ha in NS conditions. Grain yield positively and significantly (P < 0.05) correlated with harvest index (r = 0.79), panicle weight (r = 0.75) and panicle length (r = 0.37), and negatively correlated with days to flowering (r = − 0.35) under DS condition. Principal component (PC) analysis identified two PCs accounting for 96.35 % of total genotypic variation based on drought tolerance selection indices. Biplot analysis using a combination assessed traits allowed selection of drought tolerant mutant lines designated as ML4, ML10, ML6, and ML5 with mean grain yield of 2.27, 2.05, 1.89 and 1.67 t/ha under DS conditions, in that order. The selected lines are recommended for further multi-environment evaluations for release and large-scale production in Namibia or other related agro-ecologies.

This article focuses on the results from trials developed to monitor the short-term effects of conventionally tilled systems versus CA on soil quality and crop productivity under conditions of the major cropping systems in central, north-central and north-eastern regions of Namibia. Conventional tillage (CT), Minimum tillage (MT), Minimum tillage, mulch (MT-M), Minimum tillage, rotation (MT-R) and Minimum tillage, mulch and rotation (MT-MR) were the primary treatments tested. Significant differences (p≤0.000) among the treatments were observed in the 0-60 cm soil profiles where MT-M plots had the highest soil moisture content (39.8 mm, Standard Error of Mean 0.2815) over the study period. A significant difference (p=0.0206) in grain yield was observed in the second season with CT plots yielding the highest grain yield (3852.3 kg ha-1, standard error of mean 240.35). Results suggest that CA has the potential to increase water conservation and contribute to reduction of the risk of crop failure. Climate change driven degradation under conventional tillage necessitate alternative sustainable tillage methods. Conservation tillage methods and conservation agricultural practices that minimize soil disturbance while maintaining soil cover need to be adopted more locally as viable alternatives to conventional tillage.

 Fundraiser for CCARDESA – Gaborone Botswana-Individual Consultant Selection

TORS: REVISION OF THE CCARDESA LONG-TERM STRATEGY AND MEDIUM-TERM OPERATIONAL PLAN

The article is about the initiative taken by the government of Lesotho through the Ministry of Agriculture and Food Security, whereby Intebsive Crop Production through formation of blocks is practised in order to increase production. This is done in an effort to attain Food Security.

This article is about the team building exercise that the Managment of the Ministry of Agriculture, Food Security and Nutrition undertook to "self introspect". The reasoning behind this training was the lack of coorination between the Ministry's Departments and its Donor Funded Projects which has led to the Minstry's clients suffering due to limitted and sometimes poorly provided services. The engaged consultant was able to creat awareness to the Managers on the dangers of the "silo mentality" and encouraged them to work together for the benefit of Basotho farmers. The participation of the Minister, PS and DPS gave participants moral and encouragement that the decisions and plans made during this traning will be implemented with full supoort from these three offices. 

This Climate Smart Agriculture (CSA) handbook has been developed as a resource material for use by CSA practitioners in providing training, policy advocacy, and upscaling CSA technologies and practices for improving sustainable productivity, adapting to the effects of climate change, and mitigating climate change.

Revision of the CCARDESA Long-Term Strategy and Medium-Term Operational Plan

TORS Development and Validation of the CCARDESA Gender Policy