Lime Sulpher???
21 years ago
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Comments (38)
- 21 years ago
- 21 years ago
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Alternative ideas for dormant fruit tree spraying?
Comments (0)Over the last week I have sprayed around 150 dormant fruit trees with the lime-sulpher/dormant oil. I gather it is certified organic approved, but I do NOT like the idea of oversprayed oil wafting all over the ground below trees. Can I use canola oil, or any more biodegradable oil? Any ideas on emulsifiers? Would like to hear any opinions on this. Thanks...See MoreCreating an environment to reduce insects and disease
Comments (18)I'm cautious about organic time release fertilizer. I would use only once for cold zone (6 months of growth), and twice for warm zone. Small correction needed there. You are assuming all time released fertilizers work on a 6 month basis. I believe that if you read the small print, you will find that some of them work on either a 3 month or a 4 month basis also. Just depends on which type you buy. If gardeners enjoy fussing this much over their roses, then go to it! Whatever works is fine. Myself, I've been gardening for 30 years and don't put in anywhere close to that much effort--and I'll put up my roses against anybody's else's. Basically, unless you have really abnormal soil, I don't think you need to do all that messing with it. I usually add a couple shovel's full of humus or manure or something like that at planting time. Some years I add a circle of manure around the rose--other years I don't. Other than that, about all a rose needs is regular watering (rain or hose) and an occasional feeding of a balanced fertilizer (10-10-10, for instance). Some springs I've been too busy to get to a spring feeding. Guess what--the roses bloomed beautifully anyway. Like most people here, I like alfalfa--I may spread it once a year -- or not, depending on whether I have time or not. The roses still bloom beautifully, either way. And like most gardeners here, I avoid insecticides. There are usually other ways to handle insects--like, be patient and wait for the good bugs to arrive and eat 'em up. Amazing how often that works quite well! I do spray a fungicide occasionally, but I go out of my way to plant only highly disease-resistant roses, so many of my roses need little or no spraying of fungicide. In other words, get back to basics. Give the roses sun, water them regularly (rain or hose), and feed them occasionally. That about covers most of their needs as far as I'm concerned. Oh, I forgot one other essential--lots of mulch! : ) That's my most time-consuming chore--refreshing the mulch each year. Kate...See MoreAlernative to lime sulpher?
Comments (8)It depends what you're trying to kill. I have only ever used lime sulfur as a dormant spray. It is a fungicide, not an insecticide. Actually I would not use one of the all-purpose insecticide-fungicide combination. They are pretty nasty stuff in my opinion. Even the smell of them makes me feel ill. Sulfur is very good specifically for rust, and has some effect on powdery mildew and blackspot. I don't think it has much if any effect on anthracnose. So if it is rust you are trying to combat, sulfur is probably the best organic treatment. If it is powdery mildew, you could consider Cornell formula which is based on baking soda. If you have blackspot or anthracnose you might want to consider one of the milder copper soap fungicides. They have less copper than the standard copper fungicides, and so are less toxic. Plain sulfur is supposed to be quite a bit less toxic than lime sulfur, by the way. I used to use lime sulfur as a second dormant spray but stopped a couple of years ago, and now would use only the plain sulfur if I want sulfur. It is available under the brand name 'Safer'....See MoreLime Sulphur banned by the EPA!
Comments (21)You can order it on line from amazon or from the Ace Hardware superstore, and your local Ace hardware may be able to get it for you. An alternative is the pet dip version of calcium polysulfide which is 98% and comes in 16 oz. bottles versus the Hi Yield brand of Lime sulfur which is 29 % calcium polysulfide and comes in 32 oz. bottles. The price after dilution is similar. Calcium polysulfide when diluted is stinky, effective, and relatively safe for humans. Wear rubber gloves so your hands won't stink and wear eye protection, especially when diluting the concentrate. It is very caustic (pH = 11+) and could cause blindness if the concentrate was splashed into the eye. (It can denature protein in the cornea) Other than that, it is quite safe, assuming you are not planning to drink it. (Don't mix it with acids). In my experience it is a very effective dormant spray for roses and fruit trees and bramble berry crops, and has some nutrient value when washed by rain into soils....See More- 21 years ago
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