Pests and Diseases From Magnesium Deficiency To Oribated Mites


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M
Common Name:- Magnesium Deficiency
P_magndef The effects of manganese deficiency is not a pest as such, but is a symptom that there is something wrong, usually with soil nutrients. It can occur on trees and shrubs, as well as on many herbaceous plants. It can easily be mistaken for a virus o...
Caused by:- Insufficient Magnesium in soil.
Control:- Mg deficiency can be rectified in the short term by applying a foli...

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Common Name:- Mahona Rust
P_mahoniarst Mahonia Rust is caused by the fungus Cumminsiella mirabilissima and deep-red spots with dark centers throughout the year on the upper leaf of Mahonia species. On the undersides are powdery brown pustules. If left untreated it will spread tot he w...
Caused by:- The Fungus Cumminsiella mirabilissima
Control:- Once your plant has rust, it's best to treat them with a fungicide,...

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Common Name:- Manganese Deficiency
P_manganesedif Very difficult to diagnose since it resembles to iron deficiency. Chlorosis is most severe at the top of the plant. Yellowing of the leaves appears first near leaf margins and develops in a V-shaped pattern. Leaves then develop a tan or gray spots...
Caused by:- Too Alkaline Soil Conditions
Control:- Manganese sulphate fertilisers, along with chelated forms of these ...

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Common Name:- Mealy Cabbage Aphids
P_mealycabaph The Mealy Cabbage Aphids(Brevicoryne brassicae) is just one of over 500 different species of aphids some of which are specific to one or two species of plants.
There are even aphids which attack below ground and live on the roots. These roo...
Caused by:- The Aphid Species Brevicoryne brassicae
Control:- Products containing the following chemical:- Bifenthrin, Imidaclopr...

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Common Name:- Mealy Plum Aphids
P_mealyplmaph Mealy plum aphid Hyalopterus pruni is just one of over 500 different species of aphids some of which are specific to one type of plants. Mealy plum aphid eggs overwinter on Prunus species, mainly plums, but also peaches, apricots and almonds. The...
Caused by:- The Aphid Species Hyalopterus pruni
Control:- Products containing the following chemical:- Bifenthrin, Imidaclopr...

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Common Name:- Mealybugs
P_mealybugs1 There are several species of mealybug which belong to the Pseudococcus or Planococcus Genus . Most thrive in warm conditions, which is why they are not usually seen on outdoor plants in the UK.
They are active all year round on houseplants ...
Caused by:- Pseudococcus or Planococcus species of insects
Control:- Spraying with an insecticide often does not work as their waxy coat...

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Common Name:- Melon Cotton Aphids
P_melcottaph The Melon Cotton Aphid(Aphis gossypii) is an important pest of cotton and is also called the cotton aphid or Melon Aphid and is one of the smaller aphids about 1.5mm.
It is just one of over 500 different species of aphids some of which are ...
Caused by:- The species of Aphids Aphis gossypii
Control:- Products containing the following chemical:- Bifenthrin, Imidaclopr...

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Common Name:- Meripilus Giganteus
P_meripilusgig Meripilus giganteus is a bracket fungus also known as the Giant polypore, Polyporus gigantea or Grifola giganteus. It is often found in large clumps at the base of trees, although fruiting bodies are sometimes found some distance away from the tru...
Caused by:- The Bracket fungus Meripilus giganteus
Control:- As this fungus only seem to attack mature trees an arborist or tree...

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Common Name:- Mice
P_mice There are several species of mice rodent that causes damage in the garden. Although the damage done in the garden is often unseen. They dig holes in pots to make nest in pots and in the greenhouse they scatter soil everywhere in the process of dig...
Caused by:- Several species of Rodent mice
Control:- There are several things that can be done to discourage them in you...

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Common Name:- Michaelmas Daisy Mites
P_mchdsymte Michaelmas Daisy Mite(Phytonemus pallidus), also known as the Cyclamen mite are cream to brown mites getting darker with age and about 0.25mm long long. They curl up into a saucer shape when disturbed, though you will need a powerful magnifying gl...
Caused by:- The Mite Phytonemus pallidus
Control:- Spraying with an insecticide which also kills mites will help contr...

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Common Name:- Michaelmas Daisy Wilt
P_michdsywlt Michaelmas daisy wilt is caused by the fungus Phialophora asteris and is soil borne. The first sign will be that leaves appear unnaturally pale, then turn yellow and brown from the base of the spray upwards. Eventually it will kill the whole plant...
Caused by:- The Fungus Phialophora asteris
Control:- If you spot it, the best solution is to remove and burn the entire ...

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Common Name:- Midges
P_midges There are hundreds of different types of midges. Some are unpleasant biting insects, but in relation to plants most Midges causes galls of one form or another. Often the midge larvae and sometimes adults lives inside the gall feeding on the plant....
Caused by:- Various Insects
Control:- Apart fron spraying with insecticides, many Midges can be repelled ...

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Common Name:- Millipedes
P_millipedes There are many Genera of Millipedes of the Phylum Arthropoda they have two pairs of legs per segment (except for the first segment behind the head which does not have any appendages at all, and the next few which only have one pair of legs). Each...
Caused by:- Various Arthropoda
Control:- Although most millipede species secrete repellent fluids, they are ...

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Common Name:- Mint Beetle
P_mintbtls The Mint Leaf Beetle(Chrysolina menthastri) is a pretty metallic green beetle that prefers waterside meadows and hedgerows. I can normally be found in the summer months munching away at the leaves of various mint plants. A little later in the summ...
Caused by:- The Beetle Chrysolina menthastri
Control:- If you grow cultivated mints for show then spraying at the right ti...

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Common Name:- Mint Rust
P_mintrust Mint rust is a common fungal disease of garden mint, which also affects other herbs like marjoram and savory. The fungus causes vivid dusty orange spores, which later fades to brownish/black resting spores, on the underside of the leaves. The top ...
Caused by:- The Fungus Puccinia menthae
Control:- Remove the infected plants along with its rhizomes as soon as the f...

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Common Name:- Mites
P_mites There are many species of mites which are small or minute(less than 1mm) arachnids of the order Acarina. Some are often parasitic on animals and plants, infest stored food products, and in some species transmit disease, whilst some are beneficial ...
Caused by:- Various Mites
Control:- There are various control measures that can be taken, but these mus...

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Common Name:- Moles
P_moles Moles(Talpa europaea) in the garden are not harmful as such, but they can wreck your garden by the tunnels and chambers they dig. They are attracted to gardens because of the earthworms and other insects that live beneath the soil but they are not...
Caused by:- The Animal Talpa europaea
Control:- There are many different methods of eradicating moles and methods i...

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Common Name:- Molybdenum Deficiency
P_molybdenum Molybdenum deficiency is very rare as it is a micro-nutrient and only needed in minute quantities. Nevertheless when it is deficient it causes problems in many plants especially Brassicas where it causes whiptail and citrus where it causes Yellow ...
Caused by:- Usually Acidic Soils
Control:- Foliar feeding with molybdenum salts is usually sufficient to satis...

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Common Name:- Moths
P_moths A moth is an insect closely related to the butterfly, both being of the order Lepidoptera and have a wingspan of between 5mm and 80mm. Although Moths and Butterflies are very similar, they have many differences. Most butterflies fly during the day...
Caused by:- Various species of Lepidoptera
Control:- Various detrimental moths and their larvae have specific control me...

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Common Name:- Mountain Ash Blister Mite
P_mnashblstmite The Mountain Ash Blister Mite is the same mite that causes pear Leaf Blister Mite(Phytoptus pyri previously Eriophyes Pyri). This mite is also causes problems on Apple, Pear, Quince, Hawthorn and Cotoneaster and other related species. The bodies o...
Caused by:- The Mite Phytoptus pyri(Eriophyes Pyri)
Control:- Spraying with a systemic insecticide or oils will help, but the mai...

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Common Name:- Mulberry Cankers
P_mulcanker The majority of canker-causing organisms are tied to a single host species or genus, but a few will attack a wider range of plants. This is the case with Mulberry Canker caused by Fusarium lateritium, which will attack many species such as apple, ...
Caused by:- Various Fungi and Bacteria
Control:- Canker and anthracnose are general terms for a large number of diff...

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Common Name:- Mulbery Bacterial Blight
P_mulbbacblght Mulberry Bacterial Blight(Pseudomonas syringae pv. mori) causes black or brown irregular spots on leaves, often with a yellow halo around the spot appears. As the infection progresses the entire leaf may become yellow wilt, turn brown and die. If...
Caused by:- The Bacteria Pseudomonas syringae pv.mori
Control:- Spraying does not reliably control bacterial blight and the best de...

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Common Name:- Mullien Moth
P_mulleinmth The Mullein Moth Cucullia verbasci is a Noctuid moth and is a pest of Mullein(Verbascum), Buddleia and Figwort at the end of spring. With this moth the seldom-seen adults fly in April to May. Their wings are dark brown and pointed, with scalloped ...
Caused by:- The Larvae of the moth Cucullia verbasci
Control:- Spraying at the right time in the Spring will kill the caterpillars...

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Common Name:- Mushrooms
P_toadstool Mushrooms or Toadstools is caused by fungi and can develop all over the garden, wherever there is organic matter for it to decay. It is a natural part of the flora of any garden and most toadstools fungi are providing a useful service in recycling...
Caused by:- Various Fungi
Control:- Simply brush off the toadstools when they appear, to prevent them f...

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Common Name:- Mussel Scale
P_musselsc Mussel scale(Lepidosaphces Ulmi) is also known as the oystershell scale, but in New Zealand the name Oystershell scale is reserved for Quadraspidiotus ostreaeformis. It has a shape that resembles a saltwater mussel.
It is found on twigs at ...
Caused by:- The Scale insect Lepidosaphces Ulmi
Control:- Spraying with an insecticide in early spring when the crawlers are ...

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Common Name:- Mycoplasma Infections
P_mycoplasma Mycoplasma is a genus of bacteria that lack a cell wall and the smallest known free-living life forms. They are capable of replication and cause various diseases in humans, animals, and plants. In humans diseases like Pneumonia are caused and in p...
Caused by:- Various Mycoplasma
Control:- At the moment there are no known cure and removal of the infected p...

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N
Common Name:- Narcissus Bulb Fly
P_narcisblbfly There are three species of narcissus fly Merodon equestris, Eumerus strigatus and E. tuberculatus. However, it is the large narcissus fly Merodon equestris which causes the most problems as it can attack healthy bulbs, whereas the other two only ...
Caused by:- Three Species of fly.
Control:- If the bulbs are to remain in the soil remove the leaves as soon as...

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Common Name:- Narcissus Eelworm
P_narcissuseelworm1 Narcissus eelworm are also responsible for damage to bulbs and corms of Tulips and Hyacinths, Bluebells, Snowdrops, onions and other plants like beans and peas. The Narcissus Eelworm or Nematode (Ditylenchus dipsaci) is invisible to the human eye....
Caused by:- Microspic nematodes Ditylenchus dipsaci
Control:- If eelworm is discovered, dig out and destroy affected bulbs and an...

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Common Name:- Narcissus Leaf Scorch
P_narcislfsch Narcissus leaf scorch caused by Stagonospora Curtisii and is very common in south-west England. This fungus also attacks Amaryllis as well as Narcissus species and some related genera. Early symptoms of the disease is that the leaf tips become red...
Caused by:- The Fungus Stagonospora Curtisii
Control:- No certain control measures can be recommended, but fungicides appl...

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Common Name:- Narcissus Leaf Scorch
P_narcissmldr Narcissus Smoulder is caused by Sclerotinia (Botrytis) narcissicola and is a widespread foliar disease of Narcissus cultivars. It causes significant losses in bulb and flower yield. This fungus infects immature, dying or damaged foliage, flower p...
Caused by:- The Fungus Sclerotinia (Botrytis) narcissicola
Control:- Spraying around and after flowering will control secondary smoulder...

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Common Name:- Nectria canker
P_nectriacanker This fungal species(syn. Nectria galligena) is a frequent cause of cankers in apple, pear, beech and other trees. It produces cankers in the wood of branches and trunks and severe attacks can result in the loss of a branch or the death of the tree...
Caused by:- The Fungus Neonectria galligena
Control:- Eradication of this fungi is almost impossible as the spores are al...

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Common Name:- Needle Blight of Conifers
P_needlebltcon There are several fungi that causes Needle Blight of conifers by girdling and killing the needles and branch tips. Blights can cause major commercial and ornamental damage to conifers. Infected needles often fall from the tree, usually in the year...
Caused by:- Various Fungi
Control:- Cutting out affected areas will help to control these diseases, but...

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Common Name:- Nematodes
P_chrysanteelworm The nematodes are a very successful group of animals that have colonised every possible living ecosystem from marine to fresh water, from the polar regions to the tropics, as well as the highest to the lowest of elevations. They are important par...
Caused by:- Various worms
Control:- See specific nematode control like Eelworms, Enchytraeid worms, Lea...

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Common Name:- Nitrogen Deficiency
P_nitrogendif The effects of nitrogen deficiency is not a pest as such, but is a symptom that there is something wrong, usually with soil nutrients. All plants with perhaps the exception of nitrogen fixing legumes are prone to nitrogen deficiency. Symptoms incl...
Caused by:- Lack of Available NItrogen
Control:- Prevention and control of nitrogen deficiency can be achieved in th...

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Common Name:- Nut Weevil
P_nutwvil There are several beetles of the Curculionidae family that predates various nuts. The Nut weevil (Curculio nucum) can be very serious pests of native and non-native nut trees like Hazelnut. These damaging insects begin to attack the kernels in the...
Caused by:- Several species from the family Curculionidae
Control:- Weevils usually move only a short distance after emerging and often...

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O
Common Name:- Oak Gall Wasps
P_oakglwsp There are about 1000 different species of gall forming wasps that inhabit Oak(Quercus species). Some forming the galls known as Oak apple, Oak Marble gall, Knopper gall, Rose bedeguar gall, horned oak gall wasp, and the Common Spangle gall. The la...
Caused by:- Various Wasps.
Control:- In general, most leaf galls on do not affect the health of the host...

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Common Name:- Oak Phylloxera
P_oakphylxera The Oak Phylloxera is a small yellowish sap sucking, aphid like insect about 1mm long of the Phylloxera genus some of which causes galls where the insect resides. There are approximately 12 species in this genus which attack specific trees or vine...
Caused by:- Insects of the Phylloxera genus
Control:- Is not normally considered as mature trees are apparently not serio...

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Common Name:- Oak Powdery Mildew
P_oakpwdrymldw Powdery mildews are one of the most widespread plant diseases. They affect virtually all kinds of plants from cereals and grasses, to fruit trees, and broad-leaved shade trees.
Powdery Mildew of oak is caused by the fungus Erysiphe alphitoi...
Caused by:- The Fungus Erysiphe alphitoides
Control:- The major factors that are believed to influence the spreading of t...

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Common Name:- Oats Halo Blight
P_oatshaloblight Halo blight is a common bacterial disease of oats and appears early in the season, usually earlier than any of the diseases caused by fungi and other bacteria. This is because the first shoots are infected by bacteria on the surface of the seeds....
Caused by:- The Bacteria Pseudomonas coronafaciens
Control:- This bacteria disease is seedborne and can survive on infected crop...

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Common Name:- Oedema
P_odema Oedema is not a disease as such, but occurs when roots take up water faster than it can be used by the plant or transpired through the leaves. Water pressure then builds up in the internal cells of the leaf or flower petals causing them to enlarge...
Caused by:- Too Much Water
Control:- Improve air circulation by spacing plants farther apart and increas...

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Common Name:- Oleander Scale Insect
P_olnderscle There are hundreds of scale insects. Some are specific to certain plants and others are host unspecific.
Scale insect is a nasty little sap sucking insect, that like barnacles on a hull, latch onto your plant and suck the sap and weaken the...
Caused by:- The Scale insect Aspidiotus nerii
Control:- Scraping off the scales if there are a few will control the infesta...

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Common Name:- Onion Downy Mildew
P_oniondnmldw Onion Downy Mildew affects the onion-family of plants, including garlic and ornamental species. It is caused by the fungus Peronospora destructor that overwinters on infected plants debris and can remain in the soil for at least five years. It is ...
Caused by:- The Fungus Peronospora destructor
Control:- Good hygiene is the first line of defence. Always remove all plant ...

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Common Name:- Onion Eelworm
P_onionelwrm Onion Eelworms(Ditylenchus dipsaci) are microscopic worms that live in the soil and infects onion family of plants. This eelworm can also infect Narcissus, carrots, peas, potatoes, strawberry, alfalfa, oats, clover and probably man more plants and...
Caused by:- The Nematode Ditylenchus dipsaci
Control:- Apparently planting mustard as a green manure is supposed to produc...

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Common Name:- Onion Fly
P_onionfly1 The onion fly (Delia antiqua), which almost looks like a normal house fly, attacks shallots, leeks, garlic and all members of the Allium genus. They overwinter as pupae in the soil and emerge in April/May to lays its eggs, which are white elongate...
Caused by:- Delia antiqua
Control:- This fly is attracted to the smell of onions therefore anything tha...

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Common Name:- Onion Neck Rot
P_onionnkrot There are at least seven Botrytis species that affects Onion and other Allium species Three species B. allii, B. squamosa and B. cinerea causes neck rot, but the most serious of these species causing neck rot is B. allii. THE Onions appear health...
Caused by:- Botrytis Species
Control:- Fungicide applications during the season and especially prior to ha...

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Common Name:- Onion Thrips
P_onionthrips Onion thrips (Thrips tabaci) is a world wide pest of onions, other Allium species and several crops, such as cabbage, cotton, celery, tomatoes, beans, cucumber and pineapple. Thrips are easily detected by visual inspection of the onion plant as th...
Caused by:- The insect Thrips tabaci
Control:- There are several natural enemies that help in the control of thrip...

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Common Name:- Onion White Rot
P_onionwhtrot Onion White Rot is a serious fungal disease of Allium species caused by Sclerotium cepivorum. It is soil bourn by the sclerotia(resting spores), which can remain in the soil for up to 15 years The fungus grows on the roots of the plant, causing t...
Caused by:- The Fungus Sclerotium cepivorum
Control:- Burn or destroy infected plants as soon as possible.<br /> There a...

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Common Name:- Orchid Viruses
P_orchdvrus Viruses in orchids are probably worse than bacterial or fungal infections as when the orchid is infected there is no cure and the plant should be destroyed. There are many viruses that can infect orchids, but three are most common and virulent an...
Caused by:- Various viruses
Control:- Always sterilise tools after using on orchids if it is suspected of...

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Common Name:- Oribated Mites
P_oribatedmts Oribatid Mites are a group of mites which live in the soil in cracks and holes made by other animals and in the bark of trees. They are tiny about 1mm long. Their colour can vary and like all mites are closely related of ticks and spiders. These ...
Caused by:- Various mites
Control:- No control is necessary as these mites do not feed on the tree or p...

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