Horticulture / Fertiliser

2. product containing plant macronutrients
5. The part of a plant where the roots and stem meet, usually at soil level.
7. disease caused by the fungus Colletotrichum
13. Something which kills insects.
14. Having a pH below 7.
15. A plant killer. Herbicide injury on non-targeted plants can mimic certain diseases.
17. the practice of applying supplemental water to plant and lawn areas.
18. Any substance used to decompose organic matter to prepare compost.
20. The transfer of pollen from one plant variety to another.
21. decayed organic matter.

1. Something which kills mites.
3. Applied agricultural science dealing with rural economy and husbandry.
4. Someone who has extensive knowledge of plants, their care and their requirements for survival.
5. green matter in plants and the essential molecule for photosynthesis.
6. Something which kills nematodes.
8. Something which kills fungi but not kill the spores.
9. Plural of fungus.
10. Well-defined, generally angular, discolored zones on leaves.
11. Requiring available oxygen to live.
12. the practice of applying water slowly through various types of pipes, tubes or specialized hoses.
16. systems in which no chemicals are used.
19. Synthetic substances used to kill and assortment of pests that might include weeds and insects.