Greenhouses: seeking efficiency in southern Spain

Short Description

Despite Spain’s prevalent heat and drought, Almería’s vast “sea of plastic” greenhouses enable abundant vegetable cultivation year-round, demonstrating how dry conditions can be beneficial for controlled growing. Farmers and engineers optimize scarce water resources using technology like sensors and software, achieving 20-30% savings in water and fertilizer, and around 30% in electricity. Manuel Escobar, a tomato farmer, uses soilless cultivation, recycling 20% of his water and fertilizer. This innovative approach, dating back to the 1960s, has dramatically improved Almería’s living standards.

Learning Objectives

  1. Understand the efficiency benefits of greenhouse cultivation in arid regions: Identify how controlled environments enable year-round vegetable production with significantly less water, fertilizer, and electricity compared to open-field farming.
  2. Recognize the role of technology in sustainable agriculture: Learn about the use of sensors and software in optimizing water and fertilizer consumption in greenhouses.
  3. Identify specific water-saving techniques in greenhouses: Understand methods like soilless cultivation (hydroponics) and closed-loop water systems that recirculate water and nutrients.
  4. Analyze the economic impact of greenhouse farming on local communities: Grasp how this agricultural model can dramatically improve the living standards of local populations in traditionally barren areas.