Where did phosphite come from?
During WWII, rock phosphate was used as a white phosphorus incendiary and smoke screen. The shortage of rock phosphate concerned ag-officials and they began to look for alternative sources of phosphorus fertilizers. As a result, phosphonates were first considered as fertilizers in Germany and the United States during the 1930s and '40s.
Rock phosphate is the beginning of most commercially made phosphorus products in the market today. Without the phosphate, many of our commercially available fertilizers cannot be made such as superphosphate and triple superphosphate.
• RP + sulfuric acid = superphosphate
• RP + phosphoric acid = Triple superphosphate (TSP)
What do all the different terms mean?
Phosphoric …show more content…
Phosphite can control and suppress a broad spectrum of pythium diseases ranging from blight, root dysfunction and also root rot.
Research out of Wisconsin and adapted from Cook et al., 2009 actually found that phosphites were highly comparable to subdue max. In the study, even fertility phosphites provided good control of pythium. My recommendation is that phosphites can’t be the only thing used to prevent pythium and knock it back. Phosphites are like your daily vitamin each morning! I would also recommend having a Koban, Terrazole, Subdue Maxx, Segway, Insignia and Stellar on shelf for high-pressure periods. Research across the country has also shown suppression/control of anthracnose, snow mold, dollar spot, and algae.
Phosphites are labeled for the suppression of anthracnose and do quite well in a rotation and combination with Daconil, Velista, Exemplar, and Trinity.
Research out of the UK (Dempsey et al) also found that phosphites alone and in combination with iprodione do well in reducing Microdochium Patch or Pink Snow Mold.
Vincelli and Dixon (2005) also had significant results in that phosphites will add a little control to Daconil and Chipco 26GT applications vs. Dollar
During WWII, rock phosphate was used as a white phosphorus incendiary and smoke screen. The shortage of rock phosphate concerned ag-officials and they began to look for alternative sources of phosphorus fertilizers. As a result, phosphonates were first considered as fertilizers in Germany and the United States during the 1930s and '40s.
Rock phosphate is the beginning of most commercially made phosphorus products in the market today. Without the phosphate, many of our commercially available fertilizers cannot be made such as superphosphate and triple superphosphate.
• RP + sulfuric acid = superphosphate
• RP + phosphoric acid = Triple superphosphate (TSP)
What do all the different terms mean?
Phosphoric …show more content…
Phosphite can control and suppress a broad spectrum of pythium diseases ranging from blight, root dysfunction and also root rot.
Research out of Wisconsin and adapted from Cook et al., 2009 actually found that phosphites were highly comparable to subdue max. In the study, even fertility phosphites provided good control of pythium. My recommendation is that phosphites can’t be the only thing used to prevent pythium and knock it back. Phosphites are like your daily vitamin each morning! I would also recommend having a Koban, Terrazole, Subdue Maxx, Segway, Insignia and Stellar on shelf for high-pressure periods. Research across the country has also shown suppression/control of anthracnose, snow mold, dollar spot, and algae.
Phosphites are labeled for the suppression of anthracnose and do quite well in a rotation and combination with Daconil, Velista, Exemplar, and Trinity.
Research out of the UK (Dempsey et al) also found that phosphites alone and in combination with iprodione do well in reducing Microdochium Patch or Pink Snow Mold.
Vincelli and Dixon (2005) also had significant results in that phosphites will add a little control to Daconil and Chipco 26GT applications vs. Dollar