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The pigeon pea [1] (Cajanus cajan) or toor dal is a perennial legume from the family Fabaceae native to the Eastern Hemisphere. [2] The pigeon pea is widely cultivated in tropical and semitropical regions around the world, being commonly consumed in South Asia, Southeast Asia, Africa, Latin America and the Caribbean.
Myrothecium leaf spot Myrothecium gramineum Myrothecium roridum. Neocosmospora root rot Neocosmospora vasinfecta. Periconia leaf spot Periconia byssoides. Phaeoisariopsis leaf spot Phaeoisariopsis griseola. Phoma stem canker Phoma cajani. Phyllosticta leaf spot Phyllosticta cajani. Phytophthora blight Phytophthora drechsleri f.sp. cajani
The tur pod bug is the most damaging sap-sucking pest of pigeon pea in India. [citation needed] The pods and seeds are the prime site for attack, young seeds being damaged; during heavy attacks the pods become shrivelled. Flowers, leaves and young shoots are additionally attacked. [citation needed]
Species include the pigeon pea (C. cajan), which is a significant food crop. The natural range of Cajanus species includes West Africa, Madagascar and the Comoros, the Indian Subcontinent, Indochina, southern China and Taiwan, Malesia, New Guinea, and northern Australia.
Leaves show a characteristic curling, similar to damage caused by viruses. Heavily infested plants have shortened internodes leading to resetting or a "bunchy top" appearance. A heavy, black, sooty mold may develop on an infested plant's leaves and stems as a result of the mealybug's heavy honey-dew secretions.
Temperature Extremes. The ideal temperature range for a prayer plant is between 60 to 80 degrees Fahrenheit, says Langelo. Any temperature that is lower or higher can cause the leaves to curl.
Peach leaf curl is a plant disease characterized by distortion and coloration of leaves and is caused by the fungus Taphrina deformans, [1] which infects peach, nectarine, and almond trees. T. deformans is found in the United States , Europe , Asia , Africa , Australia , and New Zealand . [ 2 ]
Sometimes these lesions will enlarge and coalesce together forming a completely blighted leaf. The infected leaf will die but will still remain attached to the plant. [3] From the attachment point of infected leaves, purplish-brown stem lesions are produced. These lesions extend upward and downward from the point of attachment.