Iris Publishers - World Journal of Agriculture and Soil Science (WJASS)
The Cause of Increased Effectiveness of Water-In-Oil Emulsion Over Water Application of Trichoderma Ovalisporum on Theobroma Cacao
Authorized by Ronald T Collins
Experiments
in Costa Rica showed thatTrichoderma Ovalisporum applied in a
water-in-oil (corn oil) emulsion gave significantly better control of frosty
pod rot disease on cacao (Theobroma cacao) pods when compared to water
applications. Experiments were conducted in Ecuador in 2011 and 2012, to
determine whether the effectiveness of the T. ovalisporum was supported
by the applied spray characteristics (Volume Median Diameter, number of
droplets per cm2, droplet volume per cm2, area coverage per cm2, Relative Span
Factor and estimated spores per cm2) as opposed to the creation of an
environment conducive to spore germination and colonization of the cacao pod.
The relative span factor and number of deposits were not different between the
two formulations. The Volume Medium Diameter, droplet volume, Droplet volume
and area coverage were statistically larger for the water formulation than
water-in-oil emulsion formulation but largely proportional to the 50% water
content in the water-in-oil emulsion formulation. From the deposit volume, the
estimated spore count per mm2 was 1100 for the water formulation and 904 for
the water-in-oil emulsion formulation. The spray characteristics of the two
formulations did not account for the significantly better control of frosty pod
rot by the water-in-oil emulsion.
For more Information: https://irispublishers.com/wjass/fulltext/the-cause-of-increased-effectiveness-of-water-in-oil-emulsion-over-water-application.ID.000563.php

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