Xtremehorticulture

Bug Problem Confusion on Pomegranate

Q. I have a pomegranate tree that bears fruit with dark red seeds. I have been fighting a bug that turns the inside pale white, almost gray. I also have a big, slow flying bug that sits on the fruit and puts its tail in it, splitting it for the birds. We also have the Katydids which I didn’t know were harmful until recently. I tried to be as organic as possible. leaffooted plant bug shot from reader. Not sure where it is…..? A. Thanks for the follow-up pictures to help me identify problems. The katydid is a problem on pomegranates in California but I had never heard of it reported as a problem here. The picture you sent to me is not a katydid but a green lacewing which is a “good guy”. Their young are probably after aphids or immature whiteflies. Confusion of green lacewing with katydid by reader Katydid on pomegramate             I did not get a picture of the second insect and I do not know what it is. But be careful in identifying insects so you don’t confuse the “good guys” with the “bad guys”. Pomegranate pest management in San Joaquin Valley              The leaf footed plant bug is a perennial problem on pomegranates, other fruit and nut trees and vegetables. Organic sprays such as soap and water are effective when they are very young but not so when they are older such as now. Control of these critters should start in about April.             Conventional pesticides like synthetic pyrethrins are the only way I know of getting some control this time of year. http://xtremehorticulture.blogspot.com/2014/08/understanding-and-controlling.html http://xtremehorticulture.blogspot.com/2017/04/traditional-pesticides-to-control-leaf.html http://xtremehorticulture.blogspot.com/2014/04/expect-those-ugly-bugs-on-pomegranate.html

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My Pomegranate Has Those Little Red Bugs

Q. I have a pomegranate tree planted by birds about 20 years ago. I never had bug problems on this tree before 2011. In 2012 it produced about 150 pounds of pomegranates. In 2013 the tree did not produce any fruit at all. This year the tree is loaded again but it is infested with those little red bugs that I think will turn into those ugly creatures you have been talking about. We don’t want to use poisons. Have there been any new developments for control? A. This particular bug, the leaf footed plant bug, is a growing problem for Las Vegas gardeners. The only way you will have a good crop of pomegranates, and most likely pistachios, is to spray. Leaffooted plant bug on pomegranate             The two choices you have are to spray with a conventional insecticide, which you call a poison, or spray with some sort of “organic” spray which I guess you might call non-poisonous.             Conventional insecticides leave a longer residual on the plant so you do not have to spray as often. Most organic sprays must be repeated more often because they don’t have much of a residual or none at all.             One of the most effective “organic” sprays is soap. You can make your own soap sprays but for most people I would highly recommend buying insecticidal soap already made. The soap used to make insecticidal soaps is less damaging to plants than grabbing scented Ivory liquid and using that. Safers insecticidal soap             Insecticidal soaps, to be effective, must be sprayed directly on the insect. They have no residual. When these bugs die from the soap, new ones will come in and invade their territory so you have to re-spray frequently.             The most effective time to spray soaps is toward dusk when bugs have settled in for the night. Soap sprays are not selective. They will kill any insect that comes in direct contact with your spray, good or bad.             Organic sprays containing pyrethrum, an insecticide derived from either Dalmatian or Persian chrysanthemums, will probably work well. However, pyrethrum is a poison. Use it carefully and wear protective clothing. Pyrethrum farmer in Kenya             Synthetic or manufactured sprays that chemically resemble pyrethrum, which you would categorize as a poison, are probably going to be effective as well. Scientists “tweaked” the chemistry of pyrethrum to give it more “knockdown power” and last a little longer. These are called synthetic pyrethroids.             Chemical names in the ingredients will say things like “Permethrin” or “pyrethroid”. These chemicals emulate natural pyrethrins but are manufactured and as such are not “organic”. If you decide to go conventional, then look for these names in the ingredients. Make sure the label permits you to apply it to fruit trees.

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Pomegranate Fruit Failure May Be Due to Funny Looking Bug

Q. I wonder if you could tell me why my pomegranate tree is not letting the pomegranates ripen on the tree.  I have many but they are falling before their time. I would greatly appreciate an answer.  Leaffooted or Leaf footed plant bug on pomegranate. A. For pomegranates to fall to the ground before they are ready would be highly unusual. My guess is that your tree may have been attacked by the leaf footed plant bug. This insect is in the valley and can attack many different fruit trees but is notorious for causing early nut drop in pistachio and almond. It can also cause early fruit drop in pomegranates.             A close examination of the tree may reveal these insects in the hundreds. Look for them. I have attached a picture of them on pomegranate. If this is the case, you will require an insecticide application starting around late May or June. The preferred insecticide is probably going to be one of these synthetic pyrethroids.             This is not the name which you will see on the label. This is the active ingredient. There are many, many manufacturers of this type of insecticide so I cannot tell you the exact trade name on the label. It will vary among companies.             The label should recommend it for fruit and vegetables and the active ingredients should have some sort of pyrethroid or permethrin or something very similar to this.             I wish I could tell you exactly the name but the nurseries carry different products. The other option is to spray it with a traditional insecticide for fruit such as Sevin. Both will work.             The pyrethroids are a bit more kind to other insects and the environment. Both of these products will hurt honey bees so make sure you spray at dusk or just before sunrise when the bees have not started to look for food.

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