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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 term vulnerable has become both a noun and verb, and now overshadows the significance of the term, vulnerabilities. For some time now, the term vulnerable has been used to refer to almost everything, yet vulnerabilities refer to the inability to withstand the effects of the hostile environment, while vulnerable refers to the possibility of being attacked, harmed – either physically or emotionally.

Malawi is a landlocked country with a population of 18 million people. About 90% of the population are smallholder subsistence farmers who own less than a hectare of land each in rural communities.Agriculture isthe most important sector of the Malawi economy. The sector includes crops, livestock and fisheries sub-sectors. It is dominated by the rain-fed smallholder farming system and is the major source of livelihoods for rural communities, contributing significantly to the household and national food security. It provides 64% of the total income of the rural population. Most farmers primarily rely on rain-fed agricultural systems, which are highly vulnerable to climate change. The negative impacts of climate change on agriculture have resulted in food insecurity at the local community level as well as at the national levels.

Many of the smallholder farmers in Malawi practice soil disturbing practices of ridging and burning of crop residues, which were advocatedby the agricultural extension system in the past (National Conservation Agriculture Task Force(NCATF), 2016). However, there is evidence that these practices over time result in reduced crop yields; lead to increased use of inorganic fertilisers to produce enough food; and ultimately are a major cause of current high levels of hunger and poverty in the rural resource-poor farming communities.

Climate change threatens agricultural productivity and poses challenges to the stability of agricultural sector in Malawi (Ministry of Agriculture, Irrigation and Water Development(MoAIWD), 2016). Therefore, it is important to invest in climate resilience in the farming systems and promote approaches such as climate smart agriculture(CSA)that are designed to reduce the impact of climate change on livelihoods of the resource-poor smallholder farmers.

Deficiency in vitamin A is one of the most prevalent problems in Sub-Saharan African countries including Malawi, Zambia and Mozambique. The consequences of deficiency of vitamin A is high fatality rate (60%) but even sub-clinical deficiency is associated with a 23% increase in preschooler mortality in areas with endemic Vitamin A deficiency”. An array of solutions have been proposed to combat Vitamin A deficiency. These have included Vitamin A capsule administration campaigns in pre-schools and primary schools unfortunately this has left behind others.

Agriculture as the backbone of Namibia’s economy has a major role to play in achieving vision 2030. however, to be able to make a significant contribution towards the growth of the economy and thus wealth creation, agricultural production/output has to increase manifold. For the realisation of such an increase the following crucial issues have to be addressed. subsistence farming should become commercialised, e.g. landownership in some form or other should be allocated to individuals, under-utilised areas should be developed and put into production and the problem of bush encroachment should be addressed and solved at national level.

¨Micronutrients are essential for plant growth and play an important role in balanced crop nutrition. They promote the strong ,steady growth of crops that produce higher yields and increase harvest quality- maximizing a plant’s genetic potential.

¨ Most micronutrients are immobile in soils and plants. There is therefore need to supply additional micronutrients to the soil.

¨Micronutrients are essential for plant growth and play an important role in balanced crop nutrition. They promote the strong ,steady growth of crops that produce higher yields and increase harvest quality- maximizing a plant’s genetic potential.

¨ Most micronutrients are immobile in soils and plants. There is therefore need to supply additional micronutrients to the soil.

—In Zimbabwe, KRG is grown in rotation with tobacco and irish potato to control the root knot nematode (Meloidogyne javanica). It is a good seed producer and the seed exported to mostly Arab countries that can hardly produce their own seed due to unfavourable climatic conditions.

This volume shares new data relating to Climate-Smart Agriculture (CSA), with emphasis on experiences in Eastern and Southern Africa. The book is a collection of research by authors from over 30 institutions, spanning the public and private sectors, with specific knowledge on agricultural development in the region discussed. The material is assembled to answer key questions on the following five topic areas: (1) Climate impacts: What are the most significant current and near future climate risks undermining smallholder livelihoods? (2) Varieties: How can climate-smart varieties be delivered quickly and cost-effectively to smallholders? (3) Farm management: What are key lessons on the contributions from soil and water management to climate risk reduction and how should interventions be prioritized?  (4) Value chains: How can climate risks to supply and value chains be reduced? and (5) Scaling up: How can most promising climate risks reduction strategies be quickly scaled up and what are critical success factors? Readers who will be interested in this book include students, policy makers, and researchers studying climate change impacts on agriculture and agricultural sustainability. 

Global food demand requires that soils be used intensively for agriculture, but how these soils are managed greatly impacts soil fluxes of carbon dioxide (CO2). Soil management practices can cause carbon to be either sequestered or emitted, with corresponding uncertain influence on atmospheric CO2 concentrations. The situation is further complicated by the lack of CO2 flux measurements for African subsistence farms. For widespread application in remote areas, a simple experimental methodology is desired. As a first step, the present study investigated the use of Bowen Ratio Energy Balance (BREB) instrumentation to measure the energy balance and CO2 fluxes of two contrasting crop management systems, till and no-till, in the lowlands within the mountains of Lesotho. Two BREB micrometeorological systems were established on 100-m by 100-m sites, both planted with maize (Zea mays) but under either conventional (plow, disk-disk) or no-till soil management systems. The results demonstrate that with careful maintenance of the instruments by appropriately trained local personnel, the BREB approach offers substantial benefits in measuring real time changes in agroecosystem CO2 flux. The periods where the two treatments could be compared indicated greater CO2 sequestration over the no-till treatments during both the growing and non-growing seasons.