Crop Principles Ag Science

Certified seed has what 3 advantages

• 98% purity

• 85% germination rate

• free from wild oats

• growth stimulator

Tags

NGSS.MS-LS2-5

Winter variety seeds have what 3 advantages...

• Tasty food

• Frost resisitant

• Higher yield

• Long growing season

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Crop rotation prevents

• Badgers

• A build up of pests

• The farmer having to plough

• Water pollution

A biological control uses a

• Predator to control a pest

• Pest to control a predator

Tags

NGSS.MS-LS2-2

True or false? Aphids eat ladybirds

• True

• False

Which chemical controls weeds?

• Fungicide

• Pesticide

• Insecticide

• Herbicide

Which chemical controls pests

• Fertiliser

• Pesticide

• Herbicide

• Fungicide

Which 3 of the following are indirect controls of pests?

• Pesticides

• Timely harvesting

• Stubble cleaning

• Crop rotation

Which 2 of the following are direct controls of pests?

• Pesticides

• Crop rotation

• Insecticides

• Timely harvesting

What are the 3 modes of action of fungicides?

• Contact

• Absorbed

• Protective

• Translocated