EXCERCISES Where do plants get their nutrients from? How can fertilisers be supplied to plants? When are nutrients removed from the soil? What should farmers do to compensate the loss of nutrients? Why are acids contained in chemical fertilisers harmful? What nutrients are organic fertilisers rich in? Which fertilisers help the soil retain moisture and resist erosion? What does the over-use of fertilisers imply? 7 Answer the questions. 1. 2. 3. 4. 5. 6. 7. 8. 8 Read the text and choose the correct option. How to Make Nettle fertiliser Harvest nettles cutting young stems, which yet. them before June, because then they are ideal for fertiliser production. Chop approximately one kilogram of nettles up with the clippers and crush with your gloved hands you place them into a barrel. Pour in water, but don’t forget to place a tightfitting lid on to the barrel, as nettle brew tends to get rather smelly. Finally, I suggest the barrel located way down the garden. Leave the mix to brew about three or four weeks before you consider it. When the time , mix it in your watering can at a rate of ten parts water to one part nettle brew, then water liberally around your plants. As the resulting feed is high in nitrogen, it is recommended it especially onto those plants require leafy or upright growth, e.g. lettuce, cabbage, lawns, sunflowers etc., but virtually all plants will receive a boost. a. 1. on / by / with 2. have not flowered / have flowered / flowered 3. Cutted / Cutting / Cut b. 4. they / them / their 5. as / since / because c. 6. is / be / would be d. 7. since / of / for 8. to apply / appling / applying e. 9. is coming / is come / comes f. 10. watering / having watered / water 11. who / whom / which 12. welcoming / welcome / welcomed Adapted from: http://www.kilcannon.ie 9 Watch the video about getting nitrogen fertiliser from nature, and say if the sentences are true or false. Correct the false ones. Fava beans are included in the Egyptian diet. ☐ T ☐ F Legumes are poor in protein content. ☐ T ☐ F Legumes contribute to soil fertility. ☐ T ☐ F Rhizobium bacteria are activated in the air. ☐ T ☐ F After being penetrated by Rhizobium bacteria, legume roots form dark red nodules. ☐ T ☐ F It is not difficult to find inoculants with Rhizobium bacteria on the market. ☐ T ☐ F Seeds should be coated with a sticky liquid two days before sowing. ☐ T ☐ F Tap water is recommended to make a syrup of sugar. ☐ T ☐ F Nitrogen is slowly released in the soil through the roots of legumes. ☐ T ☐ F The bacteria can survive in the soil less than 6 years. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Organic Egypt INSERIRE VIDEO: Get nitrogen Fertiliser from nature, for Free posted by GLOSSARY : : : : : : : bank argine bone meal farina di ossa cottonseed meal farina di semi di cotone to hinder impedire nettle feeds nutrienti a base di ortiche sewage sludge detriti fognari to thrive crescere florido