Abstract Rice hoja blanca (RHB) is one of the most serious diseases in rice-growing areas in tropical Americas. Its causal agent is RHB virus (RHBV), transmitted by the planthopper Tagosodes orizicolus Müir. Genetic resistance is the most effective and environment-friendly way of controlling the disease. So far, only 1 major quantitative trait locus (QTL) of Oryza sativa ssp. japonica origin, qHBV4.1, that alters the incidence of the virus symptoms in 2 Colombian cultivars has been reported.

This article pulls together the state of knowledge on the degree to which wheat-based systems in Bangladesh, India, Nepal, and Pakistan, are feminizing. It is not yet possible to make definitive statements. However, it is clear that wheat-based systems are undergoing far-reaching changes in relation to “who does what” and “who decides.” There are some commonalities across all four countries. Intersectionalities shape women’s identities and abilities to exert their agency. Purdah is a cultural norm in many locations. Nevertheless, each country displays different meta-trends.

Mixed farming systems (MFS) are the main food source and exist across almost all agroecological regions in the Global South. A systematic scoping review was conducted to identify the status of integrated crop-livestock research in MFS of the Global South. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol was used to identify 210 studies (excluding reviews) addressing productivity, resilience, challenges, opportunities, and perceptions of integrating crops and livestock in the Global South from the Scopus and Web of Science database.

Agricultural expansion-led deforestation in Uganda is one of the highest of the world. At the same time, internal migration patterns are strongly inter-linked with agricultural dynamics in the country, as migrants are involved in crop production activities and traditionally play important roles in major crop value chains. Migration for agricultural purposes may complicate the already difficult trade-off between agricultural development and forest preservation. This article investigates how internal migration and commercial agriculture shape deforestation patterns across Uganda.

Although Ghana is a leading global cocoa producer, its production and yield have experienced declines in recent years due to various factors, including long-term climate change such as increasing temperatures and changing rainfall patterns, as well as drought events. With the increasing exposure of cocoa-producing regions to extreme weather events, the vulnerability of cocoa production is also expected to rise. Supplemental irrigation for cocoa farmers has emerged as a viable adaptation strategy to ensure a consistent water supply and enhance yield.

Introduction

Recently, issues related to the (perceived) quality of inputs and technologies have been proposed as an important constraint to their adoption by smallholder farmers in low income countries. Taking maize seed embodying genetic gain as a case, we train random agro-dealers to test whether under-adoption by farmers is caused by low quality due to sellers' lack of knowledge about proper storage and handling.

Agroforestry-based food systems play a critical role in many dryland regions of the word, including Tunisia. These farming systems offer a range of benefits such as diversification of food and income resources for local communities, biodiversity conservation, and environmental resilience. Fig trees, olives, carob, and honey are common features of these Mediterranean agroforestry landscapes, and their produce is a traditional staple in many cuisines.

Biophysical models are key to inform management activities that can restore degraded soils and ultimately improve biomass production and soil organic carbon (SOC) sequestration. Within East Africa several studies have been conducted to evaluate models in annual cropping systems, and to quantify the impacts of different agronomic management options on soil organic carbon and yields. However, no modelling studies exist on perennial forage grasses, which are important for mixed-crop livestock systems within the region.

There is a scarcity of published literature about farmers’ level of knowledge, attitudes, and practices regarding improved forage varieties in East Africa, particularly among the populations where development projects have been and continue to be implemented. This study was carried out to address this knowledge gap and strengthen future scaling activities. We rely on cross-sectional data with a sample of 353 respondents equally drawn from treatment and control areas across 3 districts in Kenya and Uganda respectively.