Category: Precision Nutrient Management

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December 15, 2022

Variability in Yield Response Strongly Affects Maize Productivity and Nutrient Requirements 

Smallholder maize productions systems in western Kenya exhibited wide spatial and temporal variability in yield responses to N, P and K application at the field level. Nutrient omission trials provide evidence of strong and ubiquitous N limitations and high vulnerability for rapid decline in P and K under continuous cropping without balanced nutrient applications. 
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December 15, 2022

Post-Harvest Assessments of On-Farm Maize Experimentation Provide Key Checkpoints for Farmers and Stakeholders

The completion of the most recent maize-growing seasons in northern Côte d’Ivoire and Kenya (western and eastern regions) provided a first opportunity for farmers to share assessments from participating within a new on-farm research initiative for sub-Saharan Africa called NUTCAT - meaning Nutrient Catalyzed Agricultural Transformation.
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December 15, 2022

Ask An APNI Expert: Precision Ag Models

Many people assume that PA is going to involve technology – sensors, satellites, computers, etc., but according to the definition, PA is about variability – how to measure it and how to manage it. Technology gives us tools to do this but developing a model for PA doesn’t depend on it. 
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May 9, 2022

Enabling Adoption of Improved Agronomic Practices with ICT-Based Farmer Advisory Services 

The Malawi agricultural extension system is severely constrained and the existing extension network is grossly inadequate for effective information dissemination to farmers. The usefulness of Interactive Voice Response (IVR) technology to reach farmers with agronomic advisory was examined for two consecutive maize cropping seasons. This pilot work provides insight into the opportunities and pitfalls of employing IVR in agricultural technology dissemination. 
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May 9, 2022

Resilient Fertilization Strategies to Enhance Rice Productivity in Submergence-Prone Areas

Previous efforts to mitigate the negative impacts of submergence on rice production have focused mainly on varietal improvement. Synergistic effects of submergence-tolerant rice varieties and appropriate fertilizer management strategies are critical to enhance resilience of rice to submergence. 
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May 9, 2022

Towards a Farmer-Centric Framework for Scaling Productive and Sustainable Cereal Cropping Systems

A case is made for an innovation system framework that integrates farmer-centric and systemic approaches to scaling plant nutrition innovations for positive transformation of cereal cropping systems in Sub-Saharan Africa. A case study from Ethiopia helps to build the case.
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