NOVASezóna 11 Přidat obrázekČíslo epizody7Down on the FarmOverviewAgriculture is America's biggest industry. This productivity, envied around the world, is also depleting the most essential ingredients in farming: water and soil. NOVA looks at the agricultural dilemma, the short term need for profit and long term needs of the land.Air dateMarch 20, 1984Runtime (min)60