For decades, it has been common practice among growers to combine pesticides and fertilizers into one tank to reduce time and money spent on spraying fields. While an efficient approach, this practice can lead to many issues of physical and chemical incompatibilities of the various tank mix partners, a problem often made worse with today’s complex and sensitive active ingredients. To combat this issue, compatibility agents can be used to enhance stability of the fertilizer and pesticide combination. Among the various compatibility agents on the market, more than 75% involve the use of phosphate esters. However, most commercial phosphate esters are nonylphenol based and furthermore, their mechanisms as compatibilizers are poorly understood. This presentation will discuss a wide range of phosphate esters evaluated in fertilizer and pesticide systems, and examine trends regarding mono/di ratio, ethoxylation levels, and molecular weight.<br/>

Compatibility agents for complex tank mix systems

256th National Meeting (2018)

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