Tillage Chapter qns. Word Scramble
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| Question | Answer |
| Give three advantages of winter variety seeds. | Frost resistant, longer growing season and a higher yield of crops. |
| What are the 4 properties of a certified seed? | it must have a minimum germination rate 85%, a minimum purity rate of 98%, must be treated with fungicide and pesticide and be free of wild oat seed. |
| Identify 4 factors which affect crop production. | soil and water, seed variety selections, previous crop history and weed, disease and pests control. |
| Give 2 reasons for the importance of crop rotation. | it prevents a build up of pests and diseases and improves the nutrient management. |
| How can pests and disease of any crop build up in the soil? | if you dont use crop rotation, the pests can accumulate in the soil for years. |
| Explain how crop rotation can control pests and weeds. | when you plant a different crop each year, it controls pests and weeds because the crops have different pests and weeds. |
| name three methods of weed, disease and pest control. | biological, direct and indirect control. |
| what is the difference between the non selective and selective herbicide? | a non selective herbicide kills all weeds and a selective herbicide only kills one weed. |
| what is a contact herbicide? | it is a herbicide that only kills what it touches. |
| what is a translocated herbicide? | it is a herbicide that kills the root of the plant. |
| what is a residual herbicide? | it is put on the soil and kills germinating seeds. |
| What is a fungicide? | a fungicide kills or inhibits the growth of fungi |
| name two types of fungicides. | contact fungicide and translocated fungicide. |
| three reason a farmer might not use chemicals on a farm? | a build up of toxins in the food chain, harm to human health and pollution of air. |
| what are quarantine diseases? | infectious bacterial diseases that cause considerable damage to crops. |
| outline 2 practices that a farmer may use to increase sustainable practices regarding pest control. | using natural predators such as the ladybird, using a crop fleece or net |
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