Before mixing any pesticide always check the pesticide label for instructions on compatibility of two or more pesticides. If you were going to tank mix chemical pesticides, you would of course read the label to check for compatibility before mixing products. The practice offers many advantages, including: in some situations, improving the efficacy of … Compatibility has been tested at normal tank mix dilutions, not in concentrated stock tank mixtures (such as for injecting at 1:100). Tank-mixing several pesticides is a common practice for pest control. compatibility test where the mixed materials are combined in a small (1 quart or 1 liter) container at intended rates prior to needed use can give a quick indication of how the materials will behave in a spray tank. Chemical incompatibility occurs when mixing certain pesticides in the spray tank alters the activity of one or more of them. Always read and follow the label directions before combining any products. In other words, a chemical reaction takes place and produces new substances. Tank-mixing pesticides is a routine procedure which can reduce the cost of application, enhance the activity of certain products, and widen the range of treatments in a single application. Some herbicides and carriers require a compatibility agent, some are not compatible with a compatibility agent. Always do a jar test before mixing with fertilizer blends, the experts say. Mixes with sulfur also have been more difficult. Under the parameters of this practice, the results will define whether the pesticide mixture is or is not compatible in the laboratory. • Limit of one additional pesticide tank mix … The same concept applies when using living organisms for pest control. General guidance on mixing order, based on … 1.3 Compatibility is complex and can be affected by other variables such as order of addition, pH of the dilution water, pumping shear, etc. Compatibility or incompatibility should be confirmed under field spray conditions. The first is when an operator doesn’t dilute the herbicide with water before adding it to the tank. Chemical Incompatibility. However, growers need to be aware of possible legal issues and compatibility concerns. Tank mixing two or more pesticides or fertilizers is often used to increase effectiveness, save time and cost. Mixing Mistakes. Physical compatibility tests with 1 or 2 partners (eg 2 or 3 way tank mixes) test all permutations of mix order. 2,4-d dma 2,4-d ipa 2,4-d dma + dea salt 2,4-d ester atrazine bensulfuron bentazone bromoxynil chlorsulfuron clethodim clopyralid clodinafop dicamba diclofop-methyl diflufenican diquat diuron fluazifop-p butyl ester flumetsulam flupropanate fluroxypyr glufosinate-ammonium glyphosate ipa salt glyphosate ammonium glyphosate potassium halosulfuron-methyl haloxyfop hexazinone imazapic … Tank mixes can consist of much more than just pesticides, such as fertilizers, micronutrients, and adjuvants. Mixing Order . Most mixing problems occur because of one or two mistakes. Physical compatibility can be impacted by your water quality, tank residues or the addition of other materials in the spray tank. For 3 partners or more the mix is tested in the order stipulated on the compatibilty list.