Ernie Janes / Hands holding ripe Barley ears (Hordeum vulgare) ready for harvest at Salthouse, Norfolk, England, UK, August.

Ernie Janes,Ernie Janes / Lambs in meadow in spring, UK, April

Lynn M. Stone / Distant avocado groves with wild mustard growing in foreground, Goleta, California, USA.

Wild Wonders of Europe / Bartocha / Fields of Castelluccio di Norcia on the Piano Grande, Monti Sibillini National Park, Italy, May, 2009.

Gary K. Smith / Tractor with a spraying unit spraying cereal crop, showing significant spray drift, Norfol, UK, April.

Gary K. Smith / Tractor with a spraying unit spraying cereal crop, showing significant spray drift, Norfol, UK, April.

Gary K. Smith / Tractor spraying herbicide to prevent weed growth in Sugarbeet (Beta vulgaris) crop, Norfolk, UK, April.

Gary K. Smith / Self propelled spraying unit spraying on cereal crop, Norfolk, UK, April.

Pal Hermansen / Aerial view of Patchwork landscape of field, The Netherlands, May 2012.

Pal Hermansen / Wheat field (Triticum) with ripe seeds, Akershus Norway, August.

Pal Hermansen / Barley (Hordeum vulgare) ripe in field, Akerhus, Norway, August.

Pal Hermansen / Leek harvesting (Allium ampeloprasum) at farm Akershus, Norway, August.