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bonzi on poinsettias

We want to suppress vegetative growth Fig. Florida has demonstrated that applying growth retardants as a drench provides excellent height control and is safer than sprays. Hammer, P.A. All plants were treated twice in September with a foliar spray of B-Nine and Cycocel. Got itchy last night and started pruning - never realized Poinsettias are so sappy! apply a late-season Bonzi drench one to two weeks before shipping when the plants are almost at finished height with at least two to three bracts in full color. Second, the growth during this time is vegetative (i.e. Connect with UMass Extension Greenhouse Crops & Floriculture Program: UMass Research and Education Center Farms, Conservation Assessment Prioritization System (CAPS), Extension Risk Management/Crop Insurance Education, North American Aquatic Connectivity Collaborative, Civil Rights and Non-Discrimination Information. Best of all, he's FREE! oz./pot. The accompanying table has other suggestions for using low levels of A-Rest and Bonzi to control height. Christopher J. Currey and Roberto G.Lopez Controlling height is an important aspect of poinsettia production. Bonzi® est un régulateur de croissance qui a de nombreuses applications. Effect ofBonzi drench applications on plant and bract size of 'Red Sails' poinsettia. Planting cuttings with long internodes start the plants at a disadvantage with some extra height even if the plants are to be pinched. Left in the car, however, it may not fair so well. generally cortez varieties are resistant to late-season stretch. Avec Bonzi, il est possible de produiredes poinsettias dans les proportions souhaitées. No bract distortion was evident in any of the other treatments. Resources from UMass Extension and the Center for Agriculture, Food and the Environment: ag.umass.edu/coronavirus. after the Bonzi drench the plants generally grow an additional ½ – 1"/1.27 – 2.54 cm depending on the drench rate used. The first treatment of 2000 ppm B-Nine and 1000 ppm Cycocel was applied 10 September when the lateral shoots were about two inches long. At this time 5-6 bracts were fully colored and close to full expansion while many smaller leaves were in earlier stages of coloring and expansion. Growers can try to control late season stretch by applying a very dilute drench of A-Rest or Bonzi. Drench solutions should be prepared to supply 1 or 2 ppm a.i. In the opinion of some, closely-spaced bracts make a more desirable poinsettia "flower.". GrowerTalks. For traditional late-season growth control, drench with Bonzi in the north at ¼ to ½ ppm (0.75 to 1.5 ounces/100 gallons) and in the south at ½ to 1 ppm (1.5 to 3 ounces/100 gallons). In 1988, research conducted by Dr. Jim Barrett at theUniversity of Florida demonstrated the potential of Bonzi (paclobutrazol)drenches for poinsettia height control. Plants were pinched on 17 August leaving five or six nodes. Production de poinsettias – Phase 4. Also, because PGRs are treated as pesticides and have assigned re-entry intervals (12 hour REI - A-Rest, Cycocel, Sumagic; 24 hour REI - B-Nine, Bonzi), frequent use of PGRs may disrupt other work in some greenhouse operations. C… The amount of active ingredient applied in each dose are shown in Table 1. Roll, Eds. Here are guidelines to consider when using Bonzi: Applications should be uniform, especially if you are using a drip system. Never use a "spreader-sticker" unless directed to by the label. Bract internode length (measured from the top of the cyathia to the lowermost bract showing red color) was also measured at the end of the experiment to determine how treatments affected bract spacing. Don't know if they can be wired at all - stems and branches are very fragile and snap extremely easy. Many who keep poinsettias assume that it will last for months in the home environment. Rates for Bonzi, Paczol Drenching Calculations- Rick Yates 2.20.09 . Foliar sprays of PGRs are more likely to reduce bract size than drenching. Our environmental conditions create a truly unique set of problems that must be overcome to produce a high quality product. They do however make excellent subjects for bonsai, poinsettias readily take to hard pruning and bud back with ease, with age their light brown bark becomes deeply furrowed and gives a strong impression of age. An unexpected outcome was that differences in height among Bonzi-treated plants did not result from different concentrations, drench volumes or number of doses. For example, Bonzi (paclobutrazol, Syngenta Professional Products) is often used as a drench during poinsettia production to reduce unwanted stem elongation late in the crop. ft./pot). In the warmer temperatures of the deep south, we generally use chemical than would be used in cooler regions. Proper spacing is a key. Bonzi “micro-drenches” were developed and named by Dr. Jim Barrett from the University of Florida. Tips on the use of chemical growth regulators on floriculture crops. Thus it isn't necessary to use the high levels of active ingredient which led to the reduced bract diameter recorded in this experiment. In this study Bonzi was applied to poinsettia by overhead drench or subirrigation either one time using concentrated solutions or 10 times using very dilute solutions. Bonzi applied during the early stages of bract formation and coloring generally resulted in shorter plants and smaller plant diameter compared to the control treatment (Table 2). green leaves and stems), not reproductive (red bracts and cyathia). Wilfret. Rooted cuttings of 'Red Sails' poinsettia were potted on 29 July 1999 in 6-inch azalea pots of Fafard 3B. He will explore the Internet with you as your very own friend and sidekick! Also, based on my personal observations in some local greenhouses, it is sometimes hard to tell whether there has been any actual control of stretch to justify the effort invested in making the drench treatments. Starting in late October, higher drench rates can be used to provide stronger hold if needed, with a slight reduction in bract size.

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