Is Pasture Cropping a Valid Weed Management Tool

Area of Science:

• Agricultural Science
• Agronomy
• Sustainable Agriculture

Background:

• Mediterranean climates present unique challenges for agricultural systems.
• Weed management is a critical component of crop production efficiency.
• Pasture cropping integrates livestock grazing with crop production.

Purpose of the Study:

• To assess the feasibility of pasture cropping in central Spain.
• To evaluate pasture cropping as a weed management strategy.
• To analyze the impact of pasture cropping on winter barley yield.

Main Methods:

• Comparison of three cropping systems: conventional winter barley, and winter barley with two perennial summer species (Cynodon dactylon, Eragrostis curvula).
• Evaluation under Mediterranean climate conditions in central Spain.
• Analysis of crop yield, weed density, and species number.

Main Results:

• Perennial summer species growth was limited by drought and high temperatures.
• Winter barley yield decreased by 50%-60% in low rainfall years under pasture cropping.
• Pasture cropping significantly suppressed total weed density and species diversity.

Conclusions:

• Pasture cropping can be an effective weed management tool in Mediterranean regions.
• Economic viability is uncertain due to summer drought risks.
• Supplemental irrigation may be necessary for profitable summer pasture production.