Soils rarely have sufficient nutrient for crops to reach their potential yield. Applying organic fertilizers without prior knowledge of their properties may cause yield decline under low application or pollute the environment with excessive application. Understanding the nutrient variability and release pattern of organic fertilizers is crucial to supply plants with sufficient nutrients to achieve optimum productivity, while also rebuilding soil fertility and ensuring protection of environmental and natural resources. This chapter presents the authors' experiences with different organic amendments under Hawaii's tropical conditions, rather than an intensive literature review. For meat and bone meal by-products (tankage), batch-to-batch variability, nutrient content/ release pattern and quality, and plant growth response to the liquid fertilizer produced from tankage were evaluated. For animal livestock, dairy manure (DM) and chicken manure (CM) quality, changes in soil properties, and crop biomass production and root distributions were evaluated. For seaweed, an established bio-security protocol, nutrient, especially potassium (K) variability, and plant growth and yield response were evaluated in different tropical soils.

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The craft chocolate and specialty cacao industry has been driving the global chocolate industry towards more sustainable farming and ethical and transparent sourcing practices by prioritizing farmer welfare, environmental resource conservation, and consumer education. However, the craft chocolate and specialty cacao industries are also uniquely vulnerable to the immediate and long term impacts of the COVID-19 pandemic, and many cacao producers are expected to be disproportionately affected. Craft chocolate businesses have been especially hard hit by losses in revenue and specialty cacao producers are facing unique challenges compared to their industrial counterparts. Factors that influence the future of these businesses include: labor intensity, regional politics, risk tolerance, and accessibility. Immediate impacts include loss of revenue and access to markets, which are directly influenced by travel restrictions, access to petrol, global trade networks, and operational limitations. Long term impacts include changes in business strategies, including the use of e-commerce, elevating consumer education to sustain sales and providing access to transparent pricing. The global crisis reveals that there is an ethical imperative to provide investments in the specialty cacao and craft chocolate industry to deliver farmer relief, improve access to technology for business needs, and support farmer empowerment in negotiations to mitigate risks.

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