The Meyer lemon yellow originated in China and was bring to the United States in 1908 . It is not a unfeigned Citrus limon and it is much less acidic than that of a regular stinker . The juice of the Meyer lemon is used as a backup man for regular gamboge juice , but it look has a very distinctive appearance . It resembles a great orange in both shape and color . The Meyer lemon yellow , like other lemons , is susceptible to the same diseases as other citrus fruits .

Types

Citrus tristeza is a viral disease that is dominant in even Meyer stinker trees . The " Improved Meyer " strain , however , is immune . Citrus canker is a extremely contagious bacterial infection . origin rotting is a fungal contagion also known as brown rot . Greasy spot is a fungus disease . Sooty molding is another fungal disease make when dirt ball will a substance call honeydew on the leaves which fungus mold stick too .

Signs

Citrus tristeza have the seedling to turn yellow , the stem to suffer severe pitting and rootstalk decline . Citrus canker appears as yellow lesions in the chassis of a halo on the leaves , yield and branchlet . tooth root rot appears as glowering chocolate-brown patches of hard barque on the automobile trunk , which can ooze liquid . Greasy spot appear as yellow / brownish blisters on the underside of the leafage which turn into oily bleb .

Prevention

The chance of fungus disease lease hold can be decrease by making sure the soil is well run out and the trees are imbed far enough aside so that they get honest aura circulation . Citrus tristeza can only be prevented by using rhizome that are immune to the disease .

Treatment

Trees infected with citrus tristeza should not be used and should be sprayed with an insect powder to kill the aphids , which lessens the fortune it can be spread to other trees . There is no treatment or remedy for citrus canker . The tree call for to be removed and destroyed . Root rot can be controlled by take all the parting and damaged yield as soon as it dangle . Also clip off all of the branches less than 2 foot above the ground . Spray with a fungicide when the disease is first name and again the following spring .

Greasy spot can be controlled by collecting and hit and disposing of all fall leave of absence . Spray with a melted copper fungicide in June or July and then again in August or September . Sooty mold can be controlled by controlling the insect with insect powder . If it is already demonstrate , spray with swimming copper fungicide .

Effects

Citrus tristeza result in reduced crop or loss of tree . hard citrus fruit canker infection can blemish the fruit , cause the leaf to throw off and the yield to break and drop off . Root rot causes the bark to dry out , crack and die . It can also have the fruit to die back and the leafage to jaundiced .

References

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