The use of aqua ammonia for the control of soil borne diseases in tomato

Abstract EN

The efficacy of aqua ammonia (NH4OH, 28% N) for the control of nematodes and Fusarium and Verticillium wilts on tomato was studied in three greenhouse experiments grown in infected soil plots in Lebanon.

Aqua ammonia (NH4OH) was applied as diluted liquid in furrows and by a drip irrigation system at the rates of 50 (normal N fertilization rate), 75 and 100 mL mˉ2 (double N fertilization rate).

Levels of control of aqua ammonia, applied as a single application before planting, were comparable to those of Agrocelhone (soil fumigant, mixture of Dichloropropene 55.4% + Chloropicrin 33.7%) achieved at a rate of 100 ml NH4OH mˉ2.

Root galling in the control treatment was much higher than the other treatments.

The yield and number of hairy roots of the control treatment were very restricted when compared to the NH4OH and Agrocelhone treatments