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Plant Diseases :wilted_flower: (Spotting disease :mag_right: (Stunted…
Plant Diseases :wilted_flower:
Pests :bug:
Aphids have sharp mouth parts that penetrate into the phloem vessels of the plant so they can feed on the sugar rich phloem sap :beetle:.
Aphids attack in huge numbers, depriving the plant cells of the products of photosynthesis, which can seriously damage and weaken the plant.
Aphids also act as vectors, transferring viruses, bacteria and fungi from diseased plants into the tissues of healthy plants on their mouth parts.
Insects can destroy plants directly and/or act as vectors of disease :skull_and_crossbones:.
Tiny nematode worms and many insect larvae that live in soil :ear_of_rice:, feed in or on plant roots, damaging them so that they can absorb water and mineral ions effectively. This means that the plant will fail to grow and thrive.
Spotting disease :mag_right:
Stunted growth (nitrate deficiency)
Spots on leaves (black spots fungus on roses :rose:)
Areas of decay and rotting (Black spots on roses, blights on potatoes).
Growths (crown galls caused by bacterial infections).
Discolouration (yellowing or chlorosis in magnesium deficiency, mosaic patterns resulting from tobacco mosaic viruses.
Presence of visible pests.
Malformed stems or leaves (aphid or nematode infestation).
Mineral Deficiency :green_apple:
Nitrates are needed to make proprieties and are vital for growth. A lack of nitrates causes stunted growth :point_up:.
Magnesium ions are needed for making chlorophyll :leaves:, which is needed for photosynthesis. Plants without enough magnesium suffer from chlorosis and have yellow leaves :fallen_leaf:.
These are non communicable diseases. Missing mineral ions can be relapsed using fertilisers.
Treatment :hospital:
Treatments include pesticides and anti fungal treatments. Removing the diseased plants before pathogens can spread is important. The sooner the treatment starts, the more uses.
You can look at manuals for help.
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