established crop造句

• "It's not about just not planting crops, but affects established crops.
• This is because the wind from the blades of the helicopter causes the canopy of the already established crop to shake and open.
• Particularly poor dryland farming techniques are intensive tillage or not having established crops or cover crops when storms strike at particularly vulnerable times prior to revegetation.
• The faculty has well-established crop and livestock farms, about 15 acres in extent for teaching purposes and for the issue of seed and planting materials and breeding stock of farm animals to the public.
• Although Monsanto had obtained the product patent on propanil on the basis of its selective herbicidal property, Rohm & Haas was able in 1974 to obtain U . S, Patent No . 3, 816, 092 ( the Wilson patent ) on a process for applying propanil to inhibit the growth of undesirable plants in areas containing established crops.