Drylands Of Kenya Research Articles

Situational Analysis of Groundwater Resources in Kenyan Drylands, Case study of Turkana County

Recent climate changes have increased the incidences of severe droughts and floods, which have increased the vulnerability of pastoralists in the Kenyan drylands. Thus, there is a need to carry out a situational analysis of groundwater as it is the main source of water which provides baseline information useful for planning Analysis of results indicates that Turkana County is dominated by shallow wells and boreholes with the shallowest wells located along the seasonal rivers and Lake Turkana. The borehole depth was found to range between 20 to 200m. Most of the boreholes located near Lake Turkana were shallower compared to those far away from the lake with a depth ranging between 0 to 52m. Most of the boreholes had a low yield that ranged between 1.2 to 4.6m3/hr be attributed to the basement rocks which are prevalent in the county and are classified as poor aquifers. The water points were mainly dense in urban areas, which was mainly the central region where the water demand was high and this was attributed to the high population. The groundwater levels occurred mostly at 13m indicating that Turkana County has mostly shallow aquifers that predominantly occurred along the river valleys and at the edge of the volcanic deposits. The groundwater quality is mainly saline as most of the boreholes had high TDS, EC and chloride levels. The presence of high fluoride levels indicates the presence of high volcanic rocks that have high fluoride ions that are largely prevalent in the study region. The Sulphate, Nitrite and Nitrate Levels in all the water samples analyzed were below the EU, WHO and KEBs standards indicating the low anthropogenic activities carried out in the drylands as most farmers are pastoralists. The most prevalent cation was sodium in some of the boreholes indicating why the groundwater was saline.

Impacts of selected Climate Smart Agricultural Practices on African Indigenous Vegetables in Kenyan drylands

Climate change has had significant impacts on the cultivation of African Indigenous Vegetables (AIVs) resulting in insufficient yields and food insecurity. African indigenous vegetables are important food crops used in combating malnutrition and food insecurity. The AIVs have the potential to provide nutrition and sustain smallholder farmers’ livelihoods. However, little is known about the impacts of Climate-Smart Agriculture Practices (CSAPs) on the yield levels in AIVs. This study was therefore conducted to evaluate the impacts of selected CSAPs on the yield levels in cowpeas (Vigna unguiculata. L) and black nightshade (Solanum nigrum. L) in Kenyan drylands. Six treatments consisting of organic manure, commercial organic fertilizers, irrigation, mulching, inorganic fertilizers and controls were used. Research plots measuring 3m by 3m were set out in a randomized complete block design and sowed with certified cowpeas seeds and well-established black nightshade seedlings. Treatments were applied at land preparation and at 7 days after crop germination. Data was collected on plant height at vegetative stage and the overall primary yield at crop maturity. Analysis of variance (ANOVA) was conducted on the quantitative data collected and analyzed using Genstat software. Post hoc analysis was carried out for significant means using Tukey’s Honest Significant Difference (HSD) test at p≤0.05. The results revealed significant differences in both the plant height and primary yield across all treatments (p≤0.05). The AIV yield levels were significantly influenced by the CSAPs products used. Plots treated with organic manure, mulching and commercial organic fertilizers had significantly higher yields. Control plots had the least amount of yields. Key words: ANOVA, Climate change, food security, malnutrition and soil degradation.

Farmyard manure and arbuscular mycorrhiza fungi inoculation enhanced growth and fruit fibre productivity of Calotropis procera in semi-arid eastern Kenya

A greenhouse experiment was conducted at the South Eastern Kenya University (SEKU) to determine the effects of farmyard manure (FYM) and arbuscular mycorrhiza fungi (AMF) inoculation on growth, vigor, shoot nutrient uptake (SNU) and AMF root colonization percentage (RC%) of potted Calotropis procera (Calotropis) seedlings. A field trial was laid out to determine the effects of the treatments on growth and fruit fibre productivity of the transplanted seedlings. The experiments were laid out in a split-split-plot design with a 2*2*2 factorial arrangement and 3 replications. The main plot factor constituted 2 Kenyan Calotropis provenances, Kibwezi and Tharaka. The sub-plot factor comprised of FYM and without FYM application while the sub-sub-plot factor involved inoculation with mixed strains of commercial AMF and without inoculation. Farmyard manure (FYM) and the integration of FYM and AMF inoculation (FYM*AMF) significantly improved Calotropis seedlings’ growth, vigor, SNU and AMF RC% in the greenhouse. However, FYM*AMF was comparatively superior to solely FYM and AMF. There were positive correlations of AMF RC% with growth, shoot dry weight (SDW) and SNU of the seedlings at the end of the greenhouse experiment. Under field conditions, FYM and FYM*AMF significantly enhanced growth and fruit fibre productivity of Calotropis plants than the controls, barring a few cases. The study recommends the use of FYM and FYM*AMF in Calotropis seedlings’ production in the drylands of Kenya. Future research should investigate the persistence of the introduced commercial AMF strains in the soil using molecular techniques.

Trajectories of resilience to acute malnutrition in the Kenyan drylands

IntroductionInsight into the resilience of local food systems—variability driven by climate, conflict, and food price shocks—is critical for the treatment and prevention of child acute malnutrition.MethodsWe use a combination of latent class mixed modeling and time-to-event analysis to develop and test a measure of resilience that is outcome-based, sensitive to specific shocks and stressors, and captures the enduring effects of how frequently and severely children face the risk of acute malnutrition.ResultsHarnessing a high-resolution longitudinal dataset with anthropometric information on 5,597 Kenyan households for the 2016–20 period, we identify resilience trajectories for 141 wards across Kenya. These trajectories—characterized by variation in the duration and severity of episodes of acute malnutrition—are associated with differential risk: (1) some 57% of wards exhibit an increasing trajectory—high household risk despite growing resilience; (2) 39% exhibit chronic characteristics—showing no real signs of recovery after an episode of crisis; (3) 3% exhibit robust characteristics—low variability with low-levels of individual household risk; whereas (4) 1% show a steady decrease in resilience—associated with high levels household risk.DiscussionOur findings highlight the importance of measuring resilience at the ward-level in order to better understand variation in the nutritional status of rural households.

Impact-based seasonal rainfall forecasting to trigger early action for droughts

The Horn of Africa faces an ongoing multi-year drought due to five consecutive failed rainy seasons, a novel climatic event with unpreceded impacts. Beyond the starvation of millions of livestock, close to 23 million individuals in the region are currently facing high food insecurity in Kenya, Somalia and Ethiopia alone. The severity of these impacts calls for the urgent upscaling and optimisation of early action for droughts. However, drought research focuses mainly on meteorological and hydrological forecasting, while early action triggered by forecasts is seldom addressed.This study investigates the potential for early action for droughts by using seasonal forecasts from the European Centre for Medium-Range Weather Forecasts (ECMWF) SEAS5 system for the March–April-May (MAM) and October–November-December (OND) rainy seasons. We show that these seasonal rainfall forecasts reflect major on-the-ground impacts, which we identify from drought surveillance data from 21 counties in Kenya. Subsequently, we show that the SEAS5 drought forecasts with short lead times have substantial potential economic value (PEV) when used to trigger action before the OND season across the region (PEVmax = 0.43). Increasing lead time to one or two months ahead of the season decreases PEV, but the benefits persist (PEVmax = 0.2). Outside of Kenya, MAM forecasts have limited value. The existence of opportunities for early action during the OND season in Kenya and Somalia is demonstrated by high PEV values, with some regions recording PEVmax values close to 0.8. To illustrate the practical value of this research, we point to a dilemma that a pastoralist in the Kenyan drylands faces when deciding whether to adopt early livestock destocking.This study underscores the importance to determine the value of early actions for forecast users with different action characteristics, and to disseminate this value alongside the standard forecasts themselves. This allows users to trigger effective actions before drought impacts develop.

Soil water use efficiency under integrated soil management practices in the drylands of Kenya

Soil moisture scarcity and soil fertility decline in the drylands contribute to declining crop productivity. The possible synergistic effects of integrating soil & water conservation, and soil fertility management practices on soil moisture, and hence water use efficiency (WUE) in the drylands of Tharaka-Nithi County in Kenya was assessed. The experiment was laid in a three by three split plot arrangement, with four replications, for four cropping seasons. Minimum tillage with mulch, tied ridges, and conventional tillage formed the main plot factors. The sub-plot factors included animal manure plus fertilizer at 120, 60, and 30 N kg ha−1. There was significant improvement in soil moisture by 35 and 28% by minimum tillage with mulch and tied ridges, respectively, compared to conventional tillage. Manure plus fertilizer rates of 120 and 60 N kg ha−1 had significantly lower soil moisture by 12 and 10%, respectively than the 30 N kg ha−1 across the seasons. The WUE was significantly enhanced by 150 and 65% under minimum tillage with mulch and tied ridges, respectively, compared to conventional tillage. Compared with 30 N kg ha−1, the 120 N kg ha−1 and 60 kg ha−1 significantly enhanced the WUE by 66 and 25%, respectively. Across the seasons, the best treatment combination for improving WUE was minimum tillage with mulch at 120 N kg ha−1 rate of manure plus fertilizer.

EFFECTS OF WEED CONTROL METHODS ON WEEDS AND PRODUCTIVITY OF RANGE GRASSES IN SEMI-ARID KENYA

<p><strong>Background:</strong> Weeds are a common occurrence and challenge in different crops eventually influencing crop development and yields. Weed control and management are key in enhancing the productivity of cultivated pastures. In semi-arid Kenyan drylands, the main methods employed for weed management are manual cultural practices and recently, the application of commercial herbicides. <strong>Objective:</strong> To evaluate the effects of two weed control methods on weed characteristics and productivity of four rangeland grasses commonly used in reseeding and pasture improvement in a semi-arid environment. <strong>Methodology:</strong> In a randomized complete block design in a field experiment, we determined the effects of two weed control methods (manual and herbicide use) in four rangeland cultivated grasses. These are Buffel grass (<em>Cenchrus ciliaris</em>), Horsetail grass (<em>Chloris roxburghiana</em>), Masaai love grass (<em>Eragrostis superba</em>) and Bush rye (<em>Enteropogon macrostachyus</em>). Weed characteristics (species, density, diversity and weed biomass,) were evaluated, as well as the effectiveness of the weed control methods in the grasses. <strong>Results:</strong> Broad-leaved weeds and annual grasses were prevalent in the established grasses. Generally, higher grass dry matter yields were obtained in <em>Cenchrus ciliaris</em> grasses (2.05 t h<sup>-1</sup>) while lowest yields were in <em>Chloris roxburghiana</em> (1.2 ton ha<sup>-1</sup>). Weed management interventions increased biomass production in the grasses by a mean of 19% in general. The mean yield increase varied with species and weed control method ranging from 8-39%. Weed control methods significantly reduced weed density, diversity and eventually weed biomass within the grass species. The efficacy of manual weed control and chemical application was in the range of 27-74%. <strong>Implications: </strong>Weed control is, therefore, necessary if one is to realize higher productivity and returns in cultivated pasture and fodder systems in semi-arid environments. <strong>Conclusion:</strong> Both chemical and manual control methods of weed control are important and effective approaches to manage weeds in pasture systems in semi-arid environments.<strong> </strong></p>

Metagenomic Investigation of Ticks From Kenyan Wildlife Reveals Diverse Microbial Pathogens and New Country Pathogen Records.

Focusing on the utility of ticks as xenosurveillance sentinels to expose circulating pathogens in Kenyan drylands, host-feeding ticks collected from wild ungulates [buffaloes, elephants, giraffes, hartebeest, impala, rhinoceros (black and white), zebras (Grévy’s and plains)], carnivores (leopards, lions, spotted hyenas, wild dogs), as well as regular domestic and Boran cattle were screened for pathogens using metagenomics. A total of 75 host-feeding ticks [Rhipicephalus (97.3%) and Amblyomma (2.7%)] collected from 15 vertebrate taxa were sequenced in 46 pools. Fifty-six pathogenic bacterial species were detected in 35 pools analyzed for pathogens and relative abundances of major phyla. The most frequently observed species was Escherichia coli (62.8%), followed by Proteus mirabilis (48.5%) and Coxiella burnetii (45.7%). Francisella tularemia and Jingmen tick virus (JMTV) were detected in 14.2 and 13% of the pools, respectively, in ticks collected from wild animals and cattle. This is one of the first reports of JMTV in Kenya, and phylogenetic reconstruction revealed significant divergence from previously known isolates and related viruses. Eight fungal species with human pathogenicity were detected in 5 pools (10.8%). The vector-borne filarial pathogens (Brugia malayi, Dirofilaria immitis, Loa loa), protozoa (Plasmodium spp., Trypanosoma cruzi), and environmental and water-/food-borne pathogens (Entamoeba histolytica, Encephalitozoon intestinalis, Naegleria fowleri, Schistosoma spp., Toxoplasma gondii, and Trichinella spiralis) were detected. Documented viruses included human mastadenovirus C, Epstein-Barr virus and bovine herpesvirus 5, Trinbago virus, and Guarapuava tymovirus-like virus 1. Our findings confirmed that host-feeding ticks are an efficient sentinel for xenosurveillance and demonstrate clear potential for wildlife-livestock-human pathogen transfer in the Kenyan landscape.

Education, financial aid, and awareness can reduce smallholder farmers' vulnerability to drought under climate change

Abstract. Analyses of future agricultural drought impacts require a multidisciplinary approach in which both human and environmental dynamics are studied. In this study, we used the socio-hydrologic, agent-based drought risk adaptation model ADOPT. This model simulates the decisions of smallholder farmers regarding on-farm drought adaptation measures and the resulting dynamics in household vulnerability and drought impact over time. We applied ADOPT to assess the effect of four top-down disaster risk reduction interventions on smallholder farmers' drought risk in the Kenyan drylands: the robustness of additional extension services, lowered credit rates, ex ante rather than ex post cash transfers, and improved early warnings were evaluated under different climate change scenarios. Model results suggest that extension services increase the adoption of newer low-cost drought adaptation measures while credit schemes are useful for measures with a high investment cost, and ex ante cash transfers allow the least wealthy households to adopt low-cost, well-known measures. Early warning systems are shown to be more effective in climate scenarios with less frequent droughts. Combining all four interventions displays a mutually reinforcing effect with a sharp increase in the adoption of on-farm drought adaptation measures, resulting in reduced food insecurity, decreased poverty levels, and drastically lower need for emergency aid, even under hotter and drier climate conditions. These nonlinear synergies indicate that a holistic perspective is needed to support smallholder resilience in the Kenyan drylands.

Nutrient and organic carbon losses by erosion, and their economic and environmental implications in the drylands of Kenya

Erosion causes soil nutrients and financial losses, and negatively impacts the environment. We sought to assess the effects of integrated soil fertility and soil & water management practices on nutrient losses, their equivalent economic losses, and environmental disturbance in the drylands of Tharaka-Nithi County. An experiment was set in a randomized complete block design with four replications. Six treatments implemented included manure + fertilizer + tied ridging under 120 kg ha−1 and 30 kg ha−1 nitrogen (N) application rate, manure + fertilizer + minimum tillage with crop residue mulch under 120 N kg ha−1 and 30 N kg ha−1, Managing Beneficial Interactions in Legume Intercrops with 60 N kg ha−1, and conventional control. A two (120 N kg ha−1 and 30 N kg ha−1) by two (Minimum tillage with mulch and tied ridges) split-plot arrangement was used to evaluate the interaction effect of soil fertility, and soil & water conservation practices. Soil & water conservation and soil fertility management practices reduced soil nutrients and organic carbon losses, ecosystem disturbance, and monetary nutrient losses when isolated or integrated. Minimum tillage with mulch had a higher reduction in the nutrient loss by 20–165% compared to tied ridges. The 120 N kg ha−1 reduced nutrient loss by 16–19% more than 30 N kg ha−1. The enrichment ratio (ER) under all the treatments was above unity, which indicated ecosystem disturbance. Minimum tillage with mulch reduced ER more than the tied ridges, whereas 30 N kg ha−1 had lower ER than 120 N kg ha−1. The equivalent monetary losses of nutrients were as high as 30 US$ ha−1for soil organic carbon, 28 US$ ha−1 for nitrogen, 73 US$ ha−1 for phosphorus, and 140 US$ ha−1 for potassium per season. The combined treatment with the least economic losses was manure + fertilizer (120 N kg ha−1) + minimum tillage with mulch. Hence, the technology should be promoted for sustainable agricultural productivity.

Assessment of Population Status of Melia Volkensii Gürke and Diversity of Tree Species in Kasaala Location in Kitui County Kenya

This study was conducted to evaluate the population status of Melia volkensii and the diversity of tree species in Kasaala Location in Kitui County. Subsequently assessing the natural regeneration of M. volkensii and thus promote its propagation and conservation in the dry lands of Kenya. Plant population was determined in situ across seven transect lines measuring 1050 meters in length. Sampling was carried out in five plots measuring 50 × 50 meters established at intervals of 1,000 meters. Transect 1 and 7 were laid in farmland while the transects between these two were laid in bushland. All tree species represented in each plot were counted. Height and diameter at breast height (DBH) were measured for all M. volkensii trees within the plots. Melia volkensii seedlings and coppices were counted in 5 × 5 meter nested plots within the larger plots. One-way analysis of variance (ANOVA) at 95% confidence interval was used to test for variance in parameters measured and means separated using Tukey’s HSD. There were significant differences in mean number of height and DBH of M. volkensii that were found in transect one and two. Transect 2 had the lowest mean height and DBH while the tallest trees were in the other transects. Tukey honestly significant difference (HSD test) was used to test separation of means (of mature trees and coppices of M. volkensii). There were no significant differences between the mean number of coppices and seedlings found in transect two and four. Moreover, relative abundance, species richness and diversity of plant species observed were analyzed using Simpson’s index of biodiversity and Shannon-Wiener species diversity index. Melia volkensii was the most frequently occurring species with 12.2% (n=67) followed by Acacia tortilis10.0% (n=55). Calotropis strophela, Commiphora capensis, Maerua crassifolia were the least represented relative abundance of 0.18%. Values of indices used varied among transects and did not follow the location of transect implying that diversity was not determined by land disturbance. Based on diversity and relative abundance of M. volkensii and associated tree species in the study area, the results show clearly that the risk of tree depletion in Kasaala Location has no significant effects on the population status of M. volkensii.

Enhancing Water Use Efficiency Through Integrated Soil Management Practices in the Drylands of Kenya

Enhancing Water Use Efficiency Through Integrated Soil Management Practices in the Drylands of Kenya

Resilience and the Mobility of Identity: Belonging and Change among Turkana Herders in Northern Kenya

Abstract Ideas of resilience are not new; they have travelled across several disciplines, stretching their original meanings to a considerable degree, turning into a 'key political category of our time' (Neocleous 2013). For the case of pastoralist groups, discussions about resilience predominantly concern the state of pastoralism as a unitary and fixed entity and its prospects for survival in a world in turmoil (climate change, diseases and epidemics, conflicts, socio-economic transformations). In this context, references to resilience generally allude to local vulnerability, purporting the need for external support. These accounts tend to ignore local voices and perceptions and neglect the role of identity, culture and change in self-presentation and everyday life. Based on fourteen months of fieldwork in the northern Kenyan drylands, this article flips dominant perspectives on pastoralism and resilience, following the herders' self-definition, their construction of a shared identity and their, at times contradictory, positioning as part of a broader society. It argues that part of their resilience rests in the feeling of belonging and solidarity around a collective identity, built in opposition to urbanities along symbolic boundaries. The article however shows how such identity remains nonetheless flexible and responsive to change, disrupting dichotomies and weaving different social worlds, such as rural and urban, together. Such flexibility is also an important element of resilience for the capacity to change, stay attentive, and mobile.

A Public-Private Partnership Scheme To Avert Desertification In The Dry lands Of Kenya: Lessons for Social Scientists

Abstract

A Public-Private Partnership Scheme To Avert Desertification in the Drylands of Kenya: Lessons for Social Scientists

Abstract

Mobile veterinary clinics in the drylands of Kenya: securing pastoralists’ livelihoods by bringing services close

ABSTRACT Livestock productivity for pastoralist households, who depend upon their livestock as a source of livelihood, is constrained by infectious diseases among other factors. Pastoralists in the arid and semi-arid lands (ASALs) of the Horn of Africa lack access to livestock health inputs and services. To assess the profitability of private animal health service delivery, mobile veterinary clinics were piloted in three ASAL counties in Kenya. Our findings reveal the positive impact of the clinics on animal health provision as well as policy and regulatory factors that affect its viability.

Impact of Traders Competitive Rivalry on Supply and Demand Relations in Livestock Markets in the Drylands of Kenya

Globally, the livestock sector is rapidly growing and contributing 40% of the total value of agricultural output. Livestock keeping is one of the main vibrant economic sectors in many Africa countries. In Kenya, livestock contributes 12% to the national Gross Domestic Product (GDP) and 42% to Agricultural GDP. 80% of Kenya’s landmass is Arid and Semi-Arid, home of about 16 million people dependent on agro-pastoral livelihoods. Though the largest Kenya region, Turkana County is the poorest, with 70% of the population depending entirely on livestock keeping. While many impediments retard the development of livestock in Kenya’s drylands, using the case of Turkana County, the study objectives focused on the effects of competitive rivalry evident in many markets and its effects on the supply and demand relations, and the impact of theory integration on the supply and demand in markets. 168 primary respondents (Livestock traders) and 24 secondary respondents (Government and Civil Society employees) were sampled to participate in the study. The study results showed that competitive rivalry significantly influences supply and demand relations in livestock markets in the pastoral areas, hindering the adoption of formal business models for market organization, functionality, and better performance. As a result, livestock prices, marketing and market governance systems, coordination of livestock trade in the county, and access to cross-border markets remain negatively affected. Recommendations for application include empowerment of traders, youth, and women through business training, exposure, and introduction of adult literacy programmes to help improve the ability of the local traders to read, write, and use technology to share market information, and do transactions. Access to capital financing, infrastructure development, and organization of marketing performance will reinforce linkages between livestock production zones and various market segments. Strengthening the governance of livestock markets by promoting leadership and management practices, and enforcement of business principles will inculcate in markets ethical competition while rooting out rivalry tendencies. Supply, demand, and theory integration in livestock trade remain critical areas for future research. Despite many limitations to the growth of livestock economy in pastoral areas, the drylands still pose significant opportunities to nurture healthy and productive livestock resources that can compete in internal and external markets while attracting substantial economic returns to empower rural economies, strengthen entrepreneurship, and make pastoral livelihoods more resilient.

Seed Borne Fungal Organisms Associated with Germination Success of Terminalia brownii (Fresen) in Kenya

Terminalia brownii is an indigenous tree species highly valued in the Kenyan drylands for its products such as timber for wood curving, medicine, and charcoal production, among others. Due to this high value followed by overutilization, its population in the drylands is dwindling. Concern about the species’ low regeneration as shown by low germination has been raised. This research was conducted on the seed borne fungal organisms that are associating with the germination of this species. T. brownii seeds were collected from cluster patches of the species in Kendu Bay, Kimose and Ndumoni in Homabay, Baringo and Kitui counties of Kenya respectively. The seeds were harvested for fruit probing for maturity confirmation. Random sampling was used in selecting thirty trees, 50 meters apart, from which fresh fruits were uniformly collected from the crowns. The research adopted a complete block experimental design where one hundred seeds each from the three sites, were subjected to a germination test, seed borne fungal organisms’ presence, identified organisms cultured and DNA and DNA sequencing carried out for identification. Fungal organisms associated with germination success of T. brownii were Fusarium equiseti, Pestalotia sp, and Alternaria alternata. Paired t test run between germinants versus the number of sown seeds gave N = 12, p-value of 0.000, t = 16.29. On the other hand, paired t test run between fungal infected seeds with the number of germinants gave N = 12, p-0.000, t = 8.78. Fungi associated with germinants included Penicillium sp, and the data analyzed using Mann-Whitney U test run showed significant difference at a p value of 0.000. Identified organisms associating with none germination and germination success on the other hand were analyzed using descriptive analysis. Fungal organisms associating with germination success of T. brownii significantly affect germination of freshly extracted seeds from the field, hence, for maximum germination achievement, seeds should be sown while still fresh.

The Effect of Participation in Farmer Groups on Household Adoption of Sustainable Land Management Practices in Kenyan Drylands

Land degradation is a major cause of declining yields and loss of dryland ecosystems resilience in the Lake Baringo Basin in Kenya. One of the solutions to land degradation in drylands is the application of Sustainable Land Management (SLM) technologies. Improving farmers’ capacity to adopt SLM technologies has been an important strategy of the Kenyan government and her development partners to addressing land degradation. State agricultural extension services are charged with the role of building this capacity. Unfortunately, such extension services have had little impact in the Kenyan drylands. To counter this inadequacy in extension services, farmers have formed grass-root organisations to foster networks of support and information sharing. In this paper, we analysed the effect of participation in farmers organisation in promoting adoption of SLM practices by agropastoralists in the Lake Baringo Basin. Data were collected through in-depth household interviews with 150 farmers, 79 of them group members and 71 non-group members. Level of knowledge, sources of information and challenges of SLM adoption were studied. The study revealed significant and positive association between group participation and adoption of SLM practices at X2 (3, N=150=63.209, P=0.000). Additionally, group partnering with development agencies like Non-Governmental Organisations (NGOs) and government departments was reported to have significant influence on household adoption of SLM practices at X2 (3, N=79=13.147, P=0.004). The results indicated that farmer groups can effectively be used to leverage farmers' adoption of SLM innovations and potentially improve household income and food security in the Kenyan drylands. We recommended organizational and resource capacity building for farmer groups to promote their effectiveness in provision of resources and services to their members. In addition, government research and extension agencies and academia should consider forming collaborations with farmer groups in generation of SLM technologies that are suited to the farmers location and prevailing context.

Promotion of Terminalia brownii in reforestation by development of appropriate dormancy breaking and germination methods in drylands; Kenya

Terminalia brownii Fresen in the Combretaceae family, is one of the indigenous tree species used in agroforestry, afforestation and reforestation programmes in drylands of Kenya. It is widely distributed in the semi-arid lands of East, Central and West Africa. It is an important drought tolerant and multipurpose agroforestry species whose potential is underutilized due to poor seed germination. Its products such as timbers, posts, charcoal and curving wood among others are not available in required quantities for domestic and industrial use. Exploitation of T. brownii is on the increase, but efforts to promote its planting are thwarted by lack of seedlings attributed to poor seed germination. This study investigated dormancy and germination of T. brownii seeds. Mature T. brownii fruits were harvested from Ikanga, Mbumbuni, Kabururu and Kimose sites; in Kitui, Makueni, Tharaka Nithi and Baringo counties of Kenya respectively. Flowering and fruiting was monitored and mature fruits harvested for dormancy and germination tests. To conduct germination tests, one hundred fruits and extracted seeds were subjected to each of the following treatments: mature whole fruits (control), dewinged fruits, fruits nipped at the distal and proximal ends and extracted seeds in four replicates. Extracted seeds started germinating after incubation for 7 days, while fruits nipped at the distal end took 21 days. The control and all other treatments from all sites failed to germinate after an incubation period of 60 days. Extracted T. brownii seeds recorded the highest germination with the best at 76% from Ikanga, while those nipped at the distal ends recorded a mean germination of 13% across all sites. There is evidence suggesting that T. brownii fruits recorded poor germination due physiological seed dormancy probably imposed by the hard samara fruit. These findings suggest that T. brownii fruits from Kimose should be nipped at the distal end, while those from Eastern Kenya (Kitui and Makueni Counties) should be extracted completely by removing the seed from the fruit to enhance germination. These results will inform choice of propagation of T. brownii seeds and enhance its planting in various agroforestry practices and afforestation programmes.