Science Daily - Organic Foods

Matchmaking for sweet potato? It's complicated

Field history matters when trying to apply the optimal amount of nitrogen for sweet potato crops. Cover crops grown in the same plots prior to sweet potato crops affected how much nitrogen was needed.

Agriculture: Quick soil test aims to determine nitrogen need

One of the essential nutrients for vigorous crop production is nitrogen. Yet most routine tests done in commercial soil testing labs do not measure available nitrogen in the soil. Soil scientists think they have found a solution.