Multiple pathways towards achieving a living income for different types of smallholder tree-crop commodity farmers

Many sources indicate that smallholder tree-crop commodity farmers are poor, but there is a paucity of data on how many of them are poor and the depth of poverty. The living income concept establishes the net annual income required for a household in a place to afford a decent standard of living. Based on datasets on smallholder cocoa and tea farmers in Ghana, Ivory Coast and Kenya and literature, we conclude that a large proportion of such farmers do not have the potential to earn a living income based on their current situation. Because these farmers typically cultivate small farm sizes and have low capacity to invest and to diversify, there are no silver bullets to move them out of poverty. We present an assessment approach that results in insights into which interventions can be effective in improving the livelihoods of different types of farmers. While it is morally imperative that all households living in poverty are supported to earn a living income, the assessment approach and literature indicate that focussing on short- to medium-term interventions for households with a low likelihood of generating a living income could be: improving food security and health, finding off-farm and alternative employment, and social assistance programmes. In the long term, land governance policies could address land fragmentation and secure rights. Achieving living incomes based on smallholder commodity production requires more discussion and engagement with farmers and their household members and within their communities, coordination between all involved stakeholders, sharing lessons learnt and data.

Perceptions by Smallholder Farmers of Forest Plantations in Malaysia

Plantation forests are perceived to be the supplementary source of wood material for the large wood products industry in Malaysia, amidst the steadily reducing supply from her natural forests. Despite the government’s initiated plantation forests scheme, the participation of smallholder farmers has been limited. Smallholder farmers constitute the largest proportion of private farmers involved in all sectors of agricultural and plantation tree crop cultivation, including commodities such as rubber and palm oil. Therefore, this study examines the lack of interest among smallholder farmers to participate in establishing forest plantations, although they have a strong presence in the palm oil and rubber sectors. A structured questionnaire survey was conducted among 12,895 smallholder farmers currently involved in palm oil, rubber and other tree-crop cultivation. The study found that this group has little knowledge and awareness of the forest plantation scheme available, and there is a prevailing perception that the establishment of forest plantations is not environment-friendly and leads to biodiversity loss. The poor economic return, small land holding, and poorly structured market and supply chain are perceived as the significant constraints faced that limit the interest among the target groups to participate in this sector. Any effort to reverse this trend and garner higher interest from the target group will necessarily require a new policy framework that boosts the economic outlook of forest plantations among smallholder farmers.

Tree–Crop Ecological and Physiological Interactions Within Climate Change Contexts: A Mini-Review

The effects of climate change are increasingly noticed worldwide, and crops are likely to be impacted in direct and indirect ways. Thus, it is urgent to adopt pliable strategies to reduce and/or mitigate possible adverse effects to meet the growing demand for sustainable and resilient food production. Monoculture cropping is globally the most common production system. However, adaptation to ongoing climate change, namely, to more extreme environmental conditions, has renewed the interest in other practices such as agroforestry, agroecology, and permaculture. This article provides an overview of ecological and physiological interactions between trees and crops in Mediterranean agroforestry systems and compares them with those from monocultures. The advantages and disadvantages of both systems are explored. The added value of modeling in understanding the complexity of interactions within agroforestry systems, supporting decision-making under current and future weather conditions, is also pinpointed. Several interactions between trees and crops might occur in agroforestry systems, leading to mutual positive and/or negative effects on growth, physiology, and yield. In this sense, selecting the most suitable combination of tree/crop species in mixtures may be best be indicated by complementary traits, which are crucial to maximizing trade-offs, improving productivity, ecosystem services, and environmental sustainability.

Intercrop practices in cashew production

Cashew is an important economic tree crop cultivated for its wood, apple and most especially the nut. The large plant spacing involved in its cultivation encourages intercropping. Intercropping cashew during the early phase of establishment with arable and sometimes tree crops is usually practiced which serves as food security, cultural weed control and means of additional income to farmers. The aim of this study is to look into some experimented cashew intercrop and gaps in the intercrop patterns. Review of past literatures was used in discovering cashew intercrop patterns in Nigeria and some major cashew producing countries. Intercropping cashew with arable crops is more popular and profitable than with tree crop except in Sri-lanka where intercropping with coconut seems profitable than cashew sole cropping. Intercropping of cashew with arable crops, legumes and vegetables did not affect the growth of young cashew except millet, sorghum and pigeon-pea. Cashew/maize and cashew/cassava/yam had high returns respectively. Intercrop combinations with more than two crops affected the growth of cashew. Cashew/rice and cashew/plantain intercrop suppressed the growth of weeds with no negative effect on cashew growth. More concise and implementable research can be done where information on weed control, growth parameters, nutrient demands, yield and economic returns can be gotten from an experiment on the various cashew intercrop patterns as this will make the findings more adoptable by the farmers. Intercropping cashew with more than 2 crops should be discouraged.

A Review of Potassium-Rich Crop Residues Used as Organic Matter Amendments in Tree Crop Agroecosystems

Ecosystem-based approaches to nutrient management are needed to satisfy crop nutrient requirements while minimizing environmental impacts of fertilizer use. Applying crop residues as soil amendments can provide essential crop nutrient inputs from organic sources while improving nutrient retention, soil health, water conservation, and crop performance. Tree crop hulls, husks, and shells have been found to contain high concentrations of potassium across species including almond, cacao, coffee, pecan, and hazelnut. The objective of this review is to characterize organic sources of potassium focusing on lignocellulosic pericarps and discuss reported effects of surface application on potassium cycling, water dynamics, soil functionality, and crop yield. Research indicates potassium ions solubilize readily from plant material into soil solution due to potassium’s high mobility as a predominately unbound monatomic cation in plant tissues. Studies evaluating tree crop nutshells, field crop residues, and forest ecosystem litter layers indicate this process of potassium release is driven primarily by water and is not strongly limited by decomposition. Research suggests orchard floor management practices can be tailored to maximize the soil and plant benefits provided by this practice. Contextual factors influencing practice adoption and areas for future study are discussed.