Raising crop response: bidirectional learning to catalyze sustainable intensification at multiple scales
Summary: The project is fully engaged with Africa RISING, CIAT and AGRA efforts in Tanzania and ready to address five "unknowns" that impede broad scaling-up of Sustainable Intensification (SI).
- It is currently unclear what constitutes 'best practices' for organic-matter technologies (OMT) such as push-pull, pigeonpea rotations, doubled up legumes and manure over the range of microenvironments, within which smallholder farmers operate. Our work will overcome these knowledge gaps.
- The project will measure on-farm nitrogen fixation of OMTs and test threshold levels of soil-organic carbon (SOC) and other aspects of soil quality, below which crops respond poorly to inorganic fertilizer. OMTs have been shown to improve nitrogen fixation, phosphorus availability, SOC and related processes, however performance on-farm is rarely documented and the number of years required to rehabilitate highly degraded soils enabling crops to respond favorably to fertilizer is not understood, nor are the range of factors that influence this.
- Knowledge is needed concerning effectiveness of novel approaches to outreach. Bidirectional learning supports an iterative process by which information providers (agrodealers, extension services and NGOs) and farmers fine-tune recommendations on OMTs, seeds and fertilizers. The team will test if this bidirectional learning, linked to mini-packs of inputs, is an effective means to support limited-resource farmers, and particularly women, to adapt and adopt these technologies.
- It will be estimated what little is known about the effects of OMT/SI take-up on nutritional outcomes of women and children.
- The project will quantify system-wide barriers to OMT/SI and engage with the Tanzanian government to guide the design of policies and programs for supporting and scaling-up SI in maize- and bean-based systems of Tanzania.
- Household survey was conducted with samples collected of food samples from households, and biochemical analyses is underway. This included field work on April and May 2018 (household interviews, anthropometry measurement of babies and food samples used for collection of complementary feeding). Out of 10 villages interviewed, 290 households collected 240 complementary food samples.
- First year of agronomic N fixation and legume maize intercrop performance trials were completed, as well as the baseline survey in collaboration with CIAT and Farm Input Promotions Africa Ltd (FIPS).
- Soil health assessment was conducted with farmers, a subset of those from the Objective 1 survey, using the LandPKS App, data analysis is underway.
- An analysis of the World Bank’s Living Standards Measurement Study (LSMS) survey data was completed to assess SI adoption and nutrition impacts as well as a draft of the report.
- Data were collected for a soil and socioeconomic survey to support the objective to determine soil properties and SI practices that enhance maize-bean responses to fertilizer.