Journal Article

This article is about a meeting that was converned for the Lesotho National Conservation Agriculture Task Force. It was a revival meeting that was last held about two years ago. The importance of such a meeting is to bring stakeholders in the agricultural sector in Lesotho to deliberate on the issues of Conservation Agriculture and how it can be supported and strenghened in order to address this "monster" called climate change.

A diagnostic survey was conducted in July 2017 in two northern districts of Zambia to investigate presence or absence of cassava brown streak disease (CBSD) and its causal viruses. In total, 29 cassava fields were surveyed and cassava leaf samples were collected from 116 plants (92 symptomatic and 24 non-symptomatic). CBSD prevalence was approximately 79% (23 of 29) across fields. Mean CBSD incidence varied across fields but averaged 32.3% while mean disease severity was 2.3 on a 1-to-5 rating scale. Reverse-transcription polymerase chain reaction screening of all 116 samples with one generic and two species specific primer pairs yielded DNA bands of the expected sizes from all symptomatic plants with the generic (785 bp) and Ugandan cassava brown streak virus (UCBSV)-specific (440 bp) primers. All 24 non-symptomatic samples were negative for UCBSV and all samples tested negative with primers targeting Cassava brown streak virus. The complete genome of a representative isolate of UCBSV (WP282) was determined to be 9,050 nucleotides in length, minus the poly A tail. A comparative analysis of this isolate with global virus isolates revealed its nature as a sequence variant of UCBSV sharing 94 and 96% maximum complete polyprotein nucleotide and amino acid identities, respectively, with isolates from Malawi (MF379362) and Tanzania (FJ039520). This is the first report of CBSD and UCBSV in Zambia, thus expanding the geographical distribution of the disease and its causal virus and further reinforcing the need to strengthen national and regional phytosanitary programs in Africa.

Pesticides are essential for the control of infestation of disease, insect pests and weeds on different crops. Due to wide usage of synthetic pesticides which may lead to increased exposure and associated environmental and health risks among small-holder farmers in Zambia, a study was undertaken to understand how knowledgeable farmers are on pesticide use and practices. A total of 418 small scale farmers were randomly sampled from Mkushi, Mpongwe, Luangwa, Mbala, Solwezi, Chipata and Kalomo Districts of Zambia. Data pertaining to types of pesticides use, handling, storage and disposal was solicited using structured questionnaires. The data collected was analyzed using SPSS. Findings revealed that of the sampled farmers 43%, 30%, 25% and 17% used Glyphosate, Dicamba, Paraquat and Atrazine respectively as herbicides in Maize. 21% and 14% used Cypermethrine and Monocrotophos respectively as insecticides in both Maize and Soybean. 81% of the sampled farmers used empty containers for either storing drinking water or salt while only 15% wore protective clothing when applying pesticides. Pesticide mishandling occurred regardless of the amount of experience a farmer had using pesticides. 68% of the sampled farmers had never received any formal basic training in pestic ide use, hence a clear knowledge gap. The fact that receipt of basic training was the main predictor of a farmers’ level of knowledge on pesticide use, a farmer who had received basic training in appropriate chemical pesticides use, as opposed to one who had not, had a better chance of using chemical pesticides safely and in the right quantities.

BACKGROUND:Thispaperdocumentsfarmerperceptionsandmanagementpracticesforfallarmyworm(Spodopterafrugiderda J.E.Smith),providingabaselineforthedevelopmentofsustainablepestmanagementstrategies.
RESULTS:91%offarmerscorrectlyidentifiedfallarmyworm,andreporteditasthemostimportantmaizepestduring2016/2017 cropping season, affecting nearly half of cultivated area. Estimated maize yield loss during the season, attributed to fall armywormwas28%.Amajorityoffarmers(60%)usedpesticidesforfallarmywormcontrol,alongwithothercultural/physical practices – handpickingandcrushingeggmasses/caterpillars(36%),andapplicationofash/sandinthefunnel(19%).Farmers usedvariouspesticideactiveingredients,andprotectivemeasureswereinadequate;>50%offarmersdidnotuseanyprotective measures while spraying. Significantly more male than female farmers used pesticides (P=0.05), and the reverse was true for culturalpractices.Significantmaizeyielddifferences(P=0.001)wereobservedbygender,attributedtodifferencesinutilization of production inputs/practices. At least 77% of farmers received and shared agricultural advice, which can be optimized to spreadinformationonfallarmywormmanagementoptions.
CONCLUSION: Increased use of pesticides to manage fall armyworm poses health and environmental risks, besides the high cost for farmers and governments. Research into cultural and indigenous practices used by farmers will offer opportunities for alternative and sustainable management practices. Research efforts should pay attention to gender differences in access to resources and inputs. Tackling fall armyworm at the farm level, and averting yield losses will require integrated messaging addressingotherproductionrisks. 

Among the biotic stresses that affect cowpea (Vigna unguiculata L) productivity, infestation by cowpea bruchid beetles (Callosobruchus maculatus) is a major problem, causing yield losses of up to 100 %. To alleviate this problem, use of resistant varieties is a feasible approach for small-scale farmers. In Zambia, there are no reported sources of resistance to C. maculatus. The objectives of this study were: i) to evaluate certain cowpea mutants, generated at the University of Zambia, for resistance to C. maculatus; ii) to cluster the tested genotypes based on height, number of pods per plant, 100-seed weight, yield ha-1, number of eggs laid and adult emergence; and iii) to evaluate the candidate mutants for protein content. Experiments were conducted at three locations in 2014/15. The mutants, LT 11-5-2-2, BB 7-9-7-5 and BB-14-16-22, were found to be resistant to C. maculatus across locations and they out-performed their respective parents (p< 0.05) in the degree of resistance to C. maculatus. Cluster analysis, using selected agronomic parameters, showed that the selected resistant mutants (cluster B) were more similar to each other (95 %) than to Namuseba and Msandile (included as susceptible genotypes), which clustered at a similarity level of 78 % (cluster A). The mutants, LT 11-5-2-2, BB 7-9-7-5 and BB-14-16-22, showed resistance to C. maculatus, but their protein content was similar to their parents, indicating that this crucial trait had been maintained in the mutants. 

Abstract — A survey was undertaken in three districts of Zambia namely; Monze, Mpongwe and Chipata which are hosting the Agriculture Productivity Programme for Southern Africa (APPSA) Sub-project titled “Developing Conservation Agriculture (CA) in Maize-Legume Systems for Smallholder Farmers in Zambia, Malawi and Mozambique”. The overall objective of this study was to get farmer perceptions of CA practices in the study districts for key information and research gaps that will contribute towards the development of CA based research agenda. The study employed both qualitative and quantitative methods to collect data from the respondents. Data generated was subjected to analysis using Statistical Package for Social Sciences (SPSS). Results revealed that the major hindrances to the application of CA practices lay in biophysical, technological, land, institutional and agro-climatic constraints.  Generally, farmers reported weeds as a major biophysical constraint to the implementation of CA technologies with Monze standing at 81.6% of the respondents followed by Mpongwe 58.1% and Chipata 52.1% respectively. This study recommends strengthening social networks of the community in order for them to have access to CA technologies information. Enhancing institutional linkages between Research, Extension and Meteorology departments is critical for dissemination of weather information which would aid in decision-making as to when farm operations would be carried out for improved agriculture productivity and production in the APPSA Project areas of Monze, Mpongwe and Chipata districts. 

This study evaluated water use efficiency (WUE) of selected hybrid maize (Zea Mays L.) varieties in Zambia under rain-fed conditions. A randomized complete block field experiment was carried out during the 2014/2015 rainy season at the University of Zambia Agricultural Demonstration Centre. Treatments were 30 maize varieties from the early, medium and late maturity classes. WUE was calculated as the ratio of yield to evapotranspiration (ET) and transpiration (T). Results showed significant differences in WUE dry matter (DM) for transpiration (T) of early maturing varieties. However, no significant differences were observed in WUEDM for evapotranspiration (ET), WUE grain yield (GY), T and WUEGY, ET. WUEDM, T, WUEDM, ET, WUEGY, T, and WUEGY, ET were statistically the same among medium maturing varieties. Results further showed that among the late maturing varieties, WUEDM, T, WUEDM, ET and WUEGY, T showed significant differences but no significant differences were observed in WUEGY, ET. It was concluded that maize varieties from the same maturity classes have different WUEs. The study thus provided options in variety selection based on which varieties performed better, particularly SC 525, SC 513 and PAN 4M 21 from the early maturity class; PHB 30G19, ZMS 606, MRI 634 and SC 637 from the medium maturity class; and PAN ZM 83, SC 709, PAN 8M 93 and SC 719 from the late maturity class. It was recommended however, that repeated experiments over time should be done to validate the findings given that the trial was only conducted in one season.

The Ministry of Agriculture and Food Security (MAFS) in Lesotho held a one-day Comprehensive Africa Agriculture Development Programme (CAADP) Second Malabo Declaration Biennial Review (BR) Report Validation Workshop for all stakeholders in the agricultural sector. CAADP is Africa's Policy Framework for Agriculture and Agriculture-led development. It is aimed at reducing poverty and increasing food security in the continent through at least 10% public budget allocation to the sector in order to achieve at least 6% agriculture annual growth rate.
The Principal Secretary (PS) of MAFS, Mr. Malefetsane Nchaka officially opened the Workshop and thanked the participants for their attendance. He encouraged them to own the CAADP process as a sector and should not only be the responsibility of MAFS as the leading Ministry. He also acknowledged the presence of Regional Strategic Analysis and Knowledge Support System (ReSAKSS) at the validation workshop The PS mentioned that the first BR report was presented in January 2018 at the AU Ordinary Session, and Lesotho’s score was 3.7 out of 10 which did not reflect well on the country. The PS further encouraged the sector to do more in whatever may be required by asking the participants to provide with data as required so that when this current BR report is presented, Lesotho should have a better score than the 2018 score. 
  
The Lesotho CAADP Focal Person, Mr. Khesa presented the report on the results of the first Biennial Review where among the seven commitments, Lesotho scored an overall of only 3.7/10. Based on this score, the following were the recommendations that the country needs to consider in order to achieve a far better score in the next biennial review reporting. The recommendations were:
•    Lesotho should increase public agriculture expenditure as share of total public expenditure in line with the Malabo Declaration commitments, and stem the decline in the area of irrigated land.
•    The country should do more to integrate the youth and women in agricultural value chains.
•    The country should strengthen agriculture data collection and management systems (monitoring and evaluation) to ensure that missing under and unreported indicators are reported in the next round of the Biennial Review. Data was not available on the following areas: 
I.    Post-Harvest Loss;
II.    Farm Pastoral and Fisher Households that are resilient to climate change and weather related risks; and
III.    Participation of women in agriculture with access to finance.

The next Biennial workshop will be held in 2021. 
 

Climate change is projected to have serious impacts on the agriculture of southern Africa, affecting food availability, creating local production shortfalls and resulting in rising commodity prices. This report highlights the risks to agriculture and food systems that may occur in two counties of the region, Malawi and Zambia. The analysis uses the conceptual framework of climate-related risk from the Fifth Assessment Report of the Intergovernmental Panel on Climate Change to examine the impacts that climate change is likely to have on agriculture and food security. Country-specific trends in temperature and rainfall and projected impacts are summarised from the literature. The vulnerability of the agricultural sector in each country is discussed in relation to its sensitivity to change and coping and adaptive capacity, and the risks of climate change on agriculture and small-scale farmers in the two focus countries assessed. A prioritisation process is then carried out to rank different commodities in each country, with respect to four dimensions: the importance of the commodity to the economy of the country, the national yield gap compared with the regional average, the importance of the commodity in people’s diet, and the projected impact of climate change on yield. The results of the analysis highlight three commodities that could be prioritized for agricultural development interventions: maize, potatoes and beans in Malawi, and maize, pulses and sorghum in Zambia.

A study was conducted to determine the influence of climate variability on livestock population dynamics in Kgalagadi district. Data on NAO, ENSO and SSTs indices were regressed and correlated against regional rainfall for kgalagadi region and livestock populations. Regional rainfall data was also related to livestock population dynamics. The results suggested that NAO, ENSO and SSTs were not good predictors of regional rainfall variability and livestock population dynamics (P > 0.05). The regional rainfall was highly variable and accounted for fluctuations on cattle and goat populations (P < 0.05) but not sheep population. Goat population appeared more sensitive to rainfall variability than other livestock species. Cattle death rate was also strongly influenced by rainfall variability whereas other livestock performance indicators were not significantly accounted for by rainfall variability. The results suggest that management need to be improved to buffer impact of climate variability on livestock population.