Mainstream 0 Posted September 28, 2007 Hallo iedereen, Dit jaar ben ik ook weer van de partij... Ik heb nu 5 x double fun staan alleen begint er bij eentje schimmel te ontstaan (deze plant is ook erg aan het stressen door de kou) Wat kan ik hier het beste mee doen? Ik heb namelijk geen zin om hier chemische rommel op te gooien. Ik houd het liever puur natuur Iemand enige tips? Quote Share this post Link to post Share on other sites
nataraj 8 Posted September 28, 2007 Ja, ik denk dat de meeste buitenkwekers last van hebben van meeldauw. Zo ik ook, maar ik heb het nog behandeld voor de bloei echt was ingegaan. Hierdoor is het bij mij dan ook wel beperkt gebleven. Om nu dan nog te gaan spuiten, lijkt mij dan ook geen optie. Maar dat was je toch al niet van plan. Verder denk ik, dat je er verder niet zo veel meer aan kan doen, dan behalve op droog weer hopen. Groetjes, Nataraj Quote Share this post Link to post Share on other sites
pdb 0 Posted September 28, 2007 ja klote he die schimmel. heb de mijne ook behandeld voor de bloei en tot nu toe geen problemen. ben zelf ook tegen spuiten in de bloei.heb hier en daar iets gelezen over een oplossing van kattestaart of brandnetels. misschien de moeite waard om te proberen. grtz Quote Share this post Link to post Share on other sites
Mainstream 0 Posted September 28, 2007 Was er indd al achter dat het meeldauw was ja Ik had eerlijk gezegd ook wel meer verwacht van mijn double funs Achja volgend jaar is er weer een jaar om te proberen, maar dan maar weer hopen op een hittegolf Ik lees nu allerlei tips over meeldauw o.a.: met melk besproeien (blijkt te werken) luciferkopjes in de grond steken (ook maar eens proberen) Quote Share this post Link to post Share on other sites
pdb 0 Posted September 28, 2007 zo is het man. positief blijven Quote Share this post Link to post Share on other sites
Mainstream 0 Posted September 28, 2007 Hahah ja zeker, gewoon proberen Heb net de melk erop gespoten, nu alleen hopen dat het werkt Quote Share this post Link to post Share on other sites
Richard 3 Posted September 28, 2007 Ja, ik denk dat de meeste buitenkwekers last van hebben van meeldauw. HIER nog nergens last van tot nu toe Quote Share this post Link to post Share on other sites
Bernie 0 Posted September 28, 2007 Melk spuiten.....??? Vertel eens wat melk voor invloed heeft op schimmel daar zie ik geen heil in. Ga maar eens met Topsin M spuiten binnen 3-4 dagen is je meeldauw verdwenen,ik heb geen ervaring met melk spuiten alleen kan ik de werking niet goed begrijpen,daarom heb ik er ook geen vertouwen in. Quote Share this post Link to post Share on other sites
Mainstream 0 Posted September 28, 2007 Ik wil er geen chemische rommel op! hier een aantal bronnen: http://www.tuinkrant.com/modules.php?name=...le&sid=5718 http://library.wur.nl/WebQuery/artik/lang/1637795 Achja we zullen het zien he Quote Share this post Link to post Share on other sites
e$kob@r 2 Posted September 28, 2007 1 liter volle melk en 4 liter water mengen. Spuiten maar. groets esko, Quote Share this post Link to post Share on other sites
Mainstream 0 Posted September 28, 2007 1 deel melk en 9 delen water Quote Share this post Link to post Share on other sites
kobuz 1 Posted September 29, 2007 Mmmm, melk, tis het proberen Ben een keer op pad geweest voor ecostyle bestrijding, maar was niet te koop waar ik dacht dat het te koop was. Melk maar eens proberen dan. Quote Share this post Link to post Share on other sites
Mainstream 0 Posted September 29, 2007 Ik heb net gekeken, en alles is eraf... geen witte punten meer waar ik de melk heb gespoten... ik heb nu nog wel een paar kleine plekjes waar het ook zat.. maar die ben ik gister vergeten. Maar het werkt dus zeker! Quote Share this post Link to post Share on other sites
kobuz 1 Posted September 29, 2007 Goeie shit, heb je niks verwijderd van te voren? Gewoon die melkoplossing erover heen en het is weg als sneeuw voor de zon? Quote Share this post Link to post Share on other sites
Aerox 0 Posted September 29, 2007 Dit vind ik zekers interessant! heb er ook last van alleen ik spuit dat spul van bayer nu, maar als melk ook werkt.... Quote Share this post Link to post Share on other sites
kobuz 1 Posted September 29, 2007 Heb net drie vensterbank stekken bespoten met een 10% magere melk oplossing. Ik ben benieuwd, ik laat hier wel weten of het gewerkt heeft, want dit zou wel een hele mooie oplossing zijn voor deze tak in de kwekerij Quote Share this post Link to post Share on other sites
power_plant 0 Posted September 29, 2007 Melk goed voor elk! De witte motor. Hhahahaha!! Laat je niet gek maken!!Hehehee!! Quote Share this post Link to post Share on other sites
tomas 2 Posted September 29, 2007 melk staat bekend als huismiddeltje om schimmels op planten te doden... Quote Share this post Link to post Share on other sites
whazzup 165 Posted September 30, 2007 A Dairy Solution to Mildew Woes Janet Raloff Milk may prove the savior of some organic wines. New field trials show that it kills a powdery mildew that would otherwise damage vine leaves and destroy grapes. Gray areas on these untreated grapes at Temple Bruer Wines reflect heavy powdery mildew damage. The grapes show splitting and "are useless," notes Peter Crisp. Crisp Many urban dwellers don't realize that mildew is more than the unsightly bane of shower stalls. On farms around the globe, it causes extensive plant infections that can exact an enormous economic toll. Though a variety of synthetic agricultural chemicals have been developed to counter mildew, such agents must not be used if crops are to be certified as having been grown organically—at least for those sold from 2007 onwards within the European Union (EU). So, Peter Crisp of the University of Adelaide, Australia, has been experimenting with natural alternatives that will quash powdery mildew on grapes and other plants, including rose bushes. One promising alternative may be as close as your refrigerator. For the past 2 years, Crisp has been spraying ordinary milk—diluted with water to a 10-percent solution—on grape vines at two commercial vineyards. He finds that in most cases, milk performs as well as the leading nonorganic powdery-mildew fighters—sulfur and a synthetic chemical known as Topas. He also has achieved about the same success with diluted sprays of liquid whey, a waste byproduct of cheese production. Though more expensive than sulfur, milk and whey sprays cost less than synthetic fungicides. They're part of a battery of new agents that may permit organic vintners to continue exporting their wines into European and U.S. markets. 'A tough fungus' Worldwide, powdery mildew is "the most serious grapevine fungal disease," observes David Bruer. Formerly a professor of enology—the science of winemaking—at Roseworthy College (now part of the University of Adelaide), Bruer and his wife Barbara Bruer, who are both chemists, now own a 67-acre organic vineyard. Most years, powdery mildew strikes at least some of their vines. And although not tremendously invasive, he says, "it is a tough fungus—hard to kill." This vine, treated with whey sprays, shows minimal mildew. Its grapes are acceptable for winemaking. Crisp The bottom line: If this fungus is ignored, he says, "you won't pick any fruit." So, he and his fellow vintners remain vigilant and spray vines at the first sign of infection. Until recently, Bruer relied on sulfur or synthetic mildicides. Then Crisp recruited Temple Bruer Wines and a couple other organic winemakers to test alternatives on their vines. With different varieties of grapes—and their inherent differences in susceptibility to mildew—"we get different degrees of control," Bruer told Science News Online. But overall, he maintains, the results "are marvelous." For example, he used the new sprays on Grenache grapes, which are used to make a red wine and are moderately susceptible to mildew. Bruer says, "we got zero infection." In contrast, his neighbor's especially susceptible Chardonnay grapes "are quite difficult to protect." It started with zucchinis Crisp says that the idea for using milk came from a 1999 research paper by Wagner Bettiol. A researcher in Brazil, Bettiol reported using various dilutions of fresh cow's milk to control powdery mildew on zucchini squash growing in greenhouses. f2314_3289.JPG This milk-sprayed vine also shows grapes with commercially acceptable traces of mildew. Crisp That particular fungal species was different than the one that ravages grapes, but Crisp decided to give milk a try. And it worked. He has since applied it to some other plants, such as roses, and shown that it also kills the mildew that plagues them. The Bettiol report and others described additional organic agents that appeared to control powdery mildew on plants, such as canola oil, clay, seaweed extracts, and bicarbonate salts. So, Crisp added them to his test arsenal for grape protection. Indeed, Bruer's preferred new regimen consists of spraying with emulsified canola oil and bicarbonate once a week and then moving to a spray of whey and seaweed extract the next cycle. "We've been using whey instead of milk, Bruer says, because "the supply of whey far exceeds the demand." It's therefore quite inexpensive and solves a major waste problem for the dairy industry. Although spraying milk or whey every 2 weeks appears to work well at controlling the fungal blight, Bruer says, "we are very reluctant to use one fungicide repeatedly." That might make it easy for the mildew to develop resistance to control. So, even if there was a great difference in efficacy between the alternatives that Crisp identified—"which there isn't," Bruer says—"we probably wouldn't use the most effective one every time. We prefer to mix up fungicides, no matter what we use." The different organic agents also appear to offer different modes of action in killing mildew, Crisp says. In the presence of sunlight, milk and whey, for instance, appear to foster the production of biologically damaging free radicals, such as hydrogen peroxide and superoxide radical. Bruer notes that in whey, "a protein, ferroglobulin, under the influence of ultraviolet light produces an oxygen radical that is extraordinarily toxic." So, any fungus that encounters it "will be in big trouble," he explains. Why doesn't it hurt the plant? Grape leaves have a thin layer of surface wax that the water-soluble radical can't penetrate. But this mechanism also explains why the dairy treatments don't work well on heavily overcast days, Bruer adds. They need the sun's light to kick-start their mildicidal action. Hoping for a sulfur reprieve Over the next few years, Crisp hopes to not only prove the utility of the organic fungicidal regimens—under both strong and weak infestations—but also to confirm that they have no deleterious impact on a wine's flavor. Head-to-head taste comparisons of wines made from grapes treated with the conventional mildicides and the new alternatives are scheduled for vintages bottled using the coming season's grapes. Even if the organics pass with flying colors, Bruer argues against the EU's phase-out of sulfur and copper treatments on organic grapes. It's not that he prefers the old-guard fungicides, but he thinks they should be available as a second-string defensive line to step in when the organic agents aren't sufficient to knock out a particularly heavy blight. If permitted on a restricted basis, Bruer says, they would be available for use "when you could demonstrate you would have an economic loss if you didn't use them." And why does an Australian winemaker even care what the EU organic-produce rules prohibit? For starters, he notes, many of Temple Bruer's 15,000 cases of wine each year are exported to Europe. But even for those bottles exported elsewhere, he notes, countries that support certified-organic labels for foods tend to follow the EU. "It's a fact," he contends, "that the EU has an absolute hegemony over organics at this stage." Meanwhile, anyone can test the milky solution to mildew in his or her backyard garden. Crisp recommends using dry-milk powder—15 grams for every liter of water. So far, he finds, this formulation appears to work on all surface mildews. Best of all, if you get thirsty while spraying, you can just sip the milky concoction. Though it makes heads turn, he concedes, "I've been known to do that." References: Bettiol, W. 1999. Effectiveness of cow's milk against zucchini squash powdery mildew (Sphaerotheca fuliginea) in greenhouse conditions. Crop Protection 18(September):489-492. Crisp, P., and D. Bruer. 2001. Organic control of powdery mildew without sulfur. Australian Grapegrower and Winemaker 452(September):22. See http://www.grapeandwine.com.au/sept01/extracts09.htm and http://www.templebruer.com.au/Trials&news.htm. Further Readings: 2002. Drop of white the right stuff for vines. University of Adelaide press release. Sept. 2. Available at http://www.adelaide.edu.au/pr/media/releas...2/milkwine.html. Sources: Peter Crisp Department of Applied and Molecular Ecology University of Adelaide PMB 1 Glen Osmond South Australia 5064 Australia Web site: http://www.waite.adelaide.edu.au/AME/funga...ogy/pcrisp.html David Bruer Temple Bruer Wines Milang Road Langhorne Creek South Australia 5255 Australia E-mail: enquiries@templebruer.com.au Web site: http://www.templebruer.com.au/ Quote Share this post Link to post Share on other sites
ThaCronic 0 Posted October 1, 2007 dit is echt interessant Wazzup en heeft er iemand al verdunde melk op zijn planten gespoten ? laters Quote Share this post Link to post Share on other sites
whazzup 165 Posted October 1, 2007 lezen thacronic - al meerdere posts hierover in dit topic. Quote Share this post Link to post Share on other sites
SativaBelieva 0 Posted October 1, 2007 Ik heb vaak met succes Preventief gebruikt... de werkzame bestandelen zijn melkzuurbacteries... dit kan je tot het einde toe gebruiken... Nu ben ik halverwege de bloei en ik ga Microsulfo van Bayer proberen... "op basis van grondstoffen uit de natuur"... maar het is natuurlijk gewoon zwavel... als dat maar niet in de toppen trekt, zodat mijn wiet naar vuurwerk gaat smaken... Ik lees ook goede dingen over Dutch Masters Zone... en waterperoxide h2o2... iemand hier ervaring mee? Quote Share this post Link to post Share on other sites
Brabantse witjes 3 Posted October 2, 2007 Ik heb nu ook last van meeldauw en begint over heel de plant zich voort te zetten... Heb me plant sinds paar dagen onder afdakje gezet want t weer begon ik beetje TE te vinden om me plant zomaar in dat weer te laten... Maar kan je meeldauw niet laten zitten of gaat dan heel me plant schimmelen op den duur ? En dat van melk spuiten moet je dat gewoon op de plant/top doen of hoe werkt zoiets... Quote Share this post Link to post Share on other sites
kobuz 1 Posted October 2, 2007 Ik heb drie stekken op de vensterbank in de bloei staan, die zaten vol met meeldouw. Van de week een keer helemaal nat gespoten met een oplossing van 1 deel magere melk en 9 delen water. De meeldouw is duidelijk minder geworden . Ze hebben net weer een douche gekregen. Quote Share this post Link to post Share on other sites
weetje 826 Posted October 2, 2007 Alhoewel melk de witte motor is, en ik dit een volgende keer zeker ga proberen. wil ik toch even kwijt dat bij mijn weten het spuiten van zwavel in de bloei NIET schadelijk is. Het werkt niet systemisch, trekt dus niet in de plant. In de fruit teelt zijn er zelfs enkele vruchten die na het oogtsten behandeld kunnen worden. Greetz van het minilab Quote Share this post Link to post Share on other sites