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Trials

Yucca and Quillaja extracts have been tested on several crops, ranging from citrus and grapes to tomatoes and many cole crops. Some trials are presented as examples.

Application of QL Agri in Citrus (Spanish)
Field trial done on Machophylla strain lemons, sensible to Tylenchulus semipenetrans.
 by J.C. magunacelaya
Evaluation of Quillaja Extract and Yucca Ag Aide for Nematode Control
Several species of nematode cause substantial damage to turfgrass. Conventional chemicals for nematode control are effective but have the disadvantages of being expensive and may be hazardous to people and non-target soil microorganisms. Natural products extracted from plants are being investigated as an alternative to chemical control. These materials are much less hazardous than synthetic nematicides and probably have less disruption of trophic pathways in the soil ecosystem.
 by Mir-M. Seyedbagheri
QL Agri - Natural Nematode Control
Quillaja saponaria extract, QL Agri, was tested in vitro and in field trials for determining its ability to control phytopathogenic nematodes. Production parameters (kg of grapes per plant) were also recorded.
The Effect of Yucca Ag-Aide on Cool-season grasses growth
Green, which is the most important part of a golf course, consists of about 35,000-45,000 m2 in size, and is where majority of maintenance effort is performed, and is subject to daily trampling of mechanical and artificial nature.
 by Dept. of Horticultural Science, Kon-kuk University
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