Tag Archives: global warming

Agri-Notes – Global Warming and its effect on food production

Global warming is a real phenomenon. We’re already experiencing its effects in terms of climate extremes resulting in drought , flooding and severe hurricanes. A  warmer world will also affect food production, in terms of quality and quantity, in several ways:

  • reduced seed germination under high soil temperatures, resulting in sparse crops stands
  • negative effect on photosynthesis, ultimately leading to reduced growth and lower crop yields  
  • reduced pollen viability which then becomes a major limiting factor for fruit set
  • delayed floral formation  resulting in smaller fruits
  • increased damage to crops from bacteria, fungi, and insect pests
  • Increased weed competition for moisture, nutrients, and light since weeds are better adapted to drought conditions than crops. In addition, herbicidal controls are less effective under hot and dry conditions.

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