
Onions
Onions Spray Programme


Improved Growth & Development
Witzenberg, Ceres - 2011
Randomised block trial
The C4L-treated area exhibited a visibly improved stand and greater vigour, with increased plant growth.
Enhanced Root Growth & Development
Witzenberg, Ceres - 2011
Randomised block trial

C4L treatment resulted in improved soil aggregation around the roots, indicating enhanced root-soil interaction and microbial activity, while the untreated roots showed weaker aggregation and less soil adherence.
Additionally, C4L-treated plants exhibited a denser, more vigorous root system with increased fine root development, compared to the less developed root network of the untreated plants.

Yield & Fusarium Incidence
Rhinestone
Op die Berg - 2017
4 Replicates
Randomised block design
The C4L programme delivered a 10% yield increase while reducing Fusarium incidence from 11.5% to 4.1%.
Onions were harvested in late December 2017, left to dry for three weeks, and had their leaves removed before being transferred to a storage facility.
After eight weeks of storage, approximately 500 onions per treatment were evaluated for signs of Fusarium infection.
C4L application dosage & timing:
-
250 mL/ha
-
2 Weeks post-transplant
-
+ 28 days later
-
+ 28 days later
Fusarium Incidence
Rimu
Op die Berg - 2017
4 Replicates
Randomised block design

The C4L treatment significantly reduced Fusarium incidence from 13.4% to 7.1%.
Onions were harvested early January 2018, left to dry for three weeks, and had their leaves removed before being transferred to a storage facility.
After seven weeks of storage, approximately 500 onions per treatment were evaluated for signs of Fusarium infection.
C4L application dosage & timing:
-
250 mL/ha
-
1 Week post-transplant
-
+ 28 days later
-
+ 28 days later