Pumpkin Disease Update – ( Rick Latin ) – Many cultivator have expressed headache over an plain lack of yield set up in their pumpkin . As you acknowledge , pitiful yield set is not potential due to an infective disease problem . High daytime and nighttime temperatures during most of July may be responsible for the product of fewer female blossom . Also , high temperatures may keep bee from their normal natural action and may interfere with the pollination process itself .
Finally , if there is any kind of fruit put and a stressful catamenia begins , it is possible that young fruit will be aborted to save the earlier set . Be that as it may , it is possible for virus infection to contribute to poor yield set . If the infection occurs early in the development of the yield , or before yield are formed , then it is probable that the plant will produce only a fraction of the fruit it ordinarily would set , and those probably will be of very poor caliber . The virus are very common in the Midwest in later summer . We are all conversant with the mosaic or 2 - 4 - D eccentric of symptom that appear on foliation . Severe damage is link up with early contagion and coming into court of these symptoms . If the symptoms are just occurring now , then it is not likely that the computer virus will sham your crop . The computer virus most likely pull through in perennial plant and gage in wooded areas , along fencing rows , and in ditch banks . I surmise that contagion to other sens occurs in the spring . Sometime during the summer , aphids may enroll a sphere after feeding among the smoke , and transmit the computer virus to pumpkins . The viruses also can be mechanically transmitted . By that I mean that it can be carried and spread with plant sap if a tractor drive through the field or a work party of workers damage plants during cultivation .
It is my opinion that the aphids may be creditworthy for introducing the virus into the playing area , but the spread and increase is probably due to mechanical transmission . Powdery mildew apparently got off to a late start this year and is not likely to cause much harm across the region . If you could keep it in stoppage for another week or so , then its affect on the harvest will stay minimum . I might be concerned about fluffy mildew irruption between now and October . A few cases of downlike mould have been discovered .
A pixilated September might increase our concern and downy mould management efforts . genus Phytophthora blight remains a concern , despite the hot juiceless atmospheric condition . I advise that you go along protective sprays , specially if the field has a history of the disease or if you have heard of an outbreak nearby . It is probably too late to do anything about it , but the bacterial leafage position pathogen is likely reasonably far-flung . This pathogen also round unseasoned yield .
symptom of fruit infection include raised white scabs or blisters on the face of the pumpkin vine . This disease was identified within the past few years . We are still in the process of learning about how the pathogen survives and spread , and what kinds of condition prompt serious departure .
