TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The continuous reactor is a tubular pipe reactor and the acid mixture (or the aqueous acid solution i.e. potassium polyphosphite solution) is fed into the tubular reactor at a rate of 15-30 gallons/minute simultaneously with the aqueous potassium hydroxide solution which is being fed into the reactor at a rate of 20-40 gallons/minute, and the acid mixture (or aqueous acid solution) and potassium hydroxide solution are reacted for 0.01-1.5 minutes; and the cooling step comprises passing the reaction mixture (or aqueous acid solution) through a steam disengagement unit where water present in the reaction mixture (or aqueous acid solution) is vaporized, thus rapidly cooling the reaction mixture (or aqueous acid solution), and the reaction mixture (or aqueous acid solution) is further cooled by spraying the mixture (or aqueous acid solution) into an air stream, and recycling the reaction mixture (or aqueous acid solution) with reaction mixture (or aqueous acid solution) entering cooling area to rapidly cool the reaction mixture (or aqueous acid solution) to below 25-75 degrees C. Preferred Components: The acid mixture comprises 50-90 parts of phosphoric acid and 10-50 parts of phosphorous acid. The aqueous potassium hydroxide solution comprises 40-60 wt.% of potassium hydroxide. Preferred Composition: The composition further comprises agricultural components including nitrogen compounds, secondary nutrients and/or micronutrients. The dual phosphorous acid combination solution further comprises a second agricultural compound. ACTIVITY - Fungicide; Fertilizer; Antibacterial.    MECHANISM OF ACTION - None given.    EXAMPLE - Phosphoric acid (85%) and solid dry phosphorous acid (99%) were pumped into a tank, and blended, agitated and mixed by maintaining a continuous feed ratio of 1:3 by weight of phosphorous acid to phosphoric acid during the process. The resulting dual phosphorous acid combination (DPAC) was then preheated by an external source of steam from ambient temperature to 82 degrees C. Then DPAC was fed into a continuous tubular reactor at a flow rate of 21 gallon/minute (GPM) while the potassium hydroxide was fed at a flow rate of 29 GPM. Then the temperature of the reactor was raised from ambient to 100 degrees C, and further increased to a final temperature of 172 degrees C by maintaining the specific gravity at 1.57. The reaction was carried out continuously for 3 hours, to obtain the aqueous fungicide, bactericide and fertilizer solution (comprised of total phosphorus pentoxide (23.9%), orthophosphorus pentoxide (6.7%), total polyphosphate (17.2%), non-ortho from phosphorous acid (5.4%), net polyphosphate (11.8%), and total percent polyphosphate (49.3%)), and rapidly cooled.