Page 18 - Griffin Gazette Spring 2017
P. 18


                                                                                                                     with thrips
                                                                                                                     feeding scars

By Rick Yates, GGSPro Technical Services Manager

                              Hanging baskets of     task and others have hired professional          Product  MOA   Primary Pests
                              all shapes and sizes   plant scouts. However you decide to handle                      Controlled
                              are staple items in    the scouting needs in your operation, the        Flagship 4A
                              most spring green-     key is to have someone whose first call is                      aphids, beetles,
                              houses as growers      to scout, so it does not go by the wayside       Kontos   23    leafminers,whiteflies,
                              seek to bolster their  when things get busy(ier).                                      mealybugs
                              bottom line with                                                        Mainspring 28
                              the additional pro-    Pulling down baskets for a close                 GNL            aphids, broad mites,
                              duction capacity.      examination requires extra effort, but                          mealybugs spider
                              When the baskets       the price for not being diligent may be          Safari   4A    mites, thrips, whiteflies
                              are hung up, they      discovering an out-of-control pest problem
benefit from higher light levels, good air           when the baskets are being pulled for                           aphids, caterpillars,
movement and warmer temperatures.                    shipping. Scouting pays rather than costs.                      leafminers, thrips
                                                     GGSPro has suggestions for protocols to
With the improved growing conditions plant           assist growers with their scouting programs                     aphids, beetles,
growth accelerates, but the plants aren’t            that are free upon request. (Check the                          leafminers,
the only things that benefit. The warmer             bonus section of the online Gazette                             mealybugs, whiteflies
air and tissue temperatures that baskets             for examples.)
receive up off the benches and floors                                                                 All of the products listed above provide long
serve to ramp up the reproductive rates              Systemic, longer-residual pesticides             residual control from a soil drench. There
of pests. In addition, scouting baskets for          applied as soil drenches are available for       are many variables that make predicting
pests when they are hung up on purlins               growers to consider in protecting their          exactly how long each product will maintain
requires more effort than scouting plants on         hanging baskets. If the crop is started on       control impossible. On average, 5-7 weeks
benches at waist height. This may                    the bench or floor, growers may elect to         of control can be anticipated when applied
allow pests to get a head start by avoiding          treat pests by foliar sprays until it’s time to  as directed by the label. Most of these
detection longer. Achieving uniform spray            hang the baskets up. To extend the length        products take 1 week or less to take
coverage can be an additional challenge              of control, insecticide drenches can be          up through herbaceous hanging basket
for hanging basket growers. Hanging                  applied as close to the time the baskets         crops, however Kontos can take up to 3
baskets are here to stay, so it makes sense          will be hung up as possible. There is no         weeks to become fully effective. Kontos
to develop a strategy to manage insect and           single product that is the best under all        will cause phytotoxicity on geraniums
mite populations tailored specifically for           circumstances, so consider these factors         (pelargonium), dracaena, cordyline, ferns
overhead basket production.                          when weighing options:                           and a few other crops found on the label.
                                                                                                      In addition, some growers have reported
Early detection of pests can lead to a wider         •	 What are the primary pests of the crops 	     that certain verbena varieties experience
selection of control options and overall             	 to be treated?                                 blooms that turn a lighter shade after
lower costs. Scouting is so beneficial that                                                           treatment. Flagship, Mainspring GNL and
some operations have staff devoted to that           •	 Length of control needed?                     Safari have demonstrated excellent plant
                                                                                                      safety, but growers are always encouraged
                                                     •	 Known phytotoxicity concerns?

18 | Griffin Gazette Spring 2017
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