Yield growth patterns of food commodities: Insights and challenges

Area of Science:

• Agricultural Science
• Global Food Security
• Climate Change Adaptation

Background:

• Global food production and productivity are critical for addressing poverty, food insecurity, and climate change.
• Understanding these patterns informs vital policy and investment decisions.
• Existing metrics may not fully capture diverse crop outputs and regional contributions.

Purpose of the Study:

• To develop comprehensive, calorific-based production and yield indices for a wide range of crops.
• To standardize measures for comparing agricultural productivity across different crops and varieties.
• To consolidate country and regional contributions to global food production.

Main Methods:

• Development of calorific-based production and yield indices for 144 crops.
• Coverage of 98% of global agricultural land and food output.
• Application of Box-Cox transformation to model yield growth, identifying a linear model as optimal.

Main Results:

• No discernible slowdown in global yield growth over the past six decades at an aggregate level.
• Average annual yield increase equivalent to nearly 33 kilograms of wheat per hectare.
• Observed decelerations in specific commodities or regions are offset by gains elsewhere.

Conclusions:

• Global food supply has shown consistent growth, reassuring from a production capacity standpoint.
• Concerns remain regarding the sustainability of production and food affordability amidst rising demand and climate pressures.
• Strategic and sustainable agricultural practices are essential for ensuring future food security.