Source: The Great Interpretation of Dreams (Ibn Sirin)
Crops burning in a dream indicate drought and barrenness, or strife afflicting the people of that place.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Crops burning indicate loss of money or corruption of work.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Crops burning are interpreted as worry and calamity.