Plant extract product proven in field trials

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

Field trials in 2011-2013 and a test market in 2013 conducted in corn and soybeans has confirmed what was claimed when Regalia Rx was registered, Marrone Bio Innovations announced.  

Adding one pint of Regalia Rx to an existing fungicide program improved overall plant health and yields. Applications of the product to both corn and soybeans produced plants with more extensive root systems, larger, fuller ears of corn, bigger and greener soybean plants and overall better yields, according to Marrone Bio Innovations. Similar yield response and plant health improvements were demonstrated in rice, wheat and barley trials during the same timeframe, according to the company.

"The average yield increase across the Regalia Rx trials conducted in conjunction with universities and on farms was six bushels an acre in corn and two bushels an acre in soybeans compared to the standard fungicide program," said Tim Johnson, Ph.D., global product development director for Marrone Bio Innovations. "These increases provide a very good return on investment on the pint of Rx that was applied."

Encouraged by the yield increases and plant responses that were observed, the product development staff focused a portion of the 2013 trials on comparing various application timing scenarios to see how application timing would impact product performance. The resulting data showed higher yield increases when Regalia Rx was applied earlier in the season.

In corn, studies showed that Regalia Rx applied at the V4 and V8 stages of growth boosted yields significantly more than later season applications at V8 and VT, explains Johnson.

The active ingredient in Regalia Rx is derived from a plant extract, and the company explains that it triggers plants' natural defense systems to help protect against disease, improve plant health, combat fungal and bacterial diseases and boost yield potential. Its mode of action is classified as induced systemic resistance (ISR). Marrone Bio says that ISR provides the crop benefits because of various reasons as explained.

  • Inhibits pathogen growth by:
    • Inducing phytoalexins and phenolic compounds
    • Increasing the activity pathogen-related (PR) proteins in plants
    • Elevating levels of reactive oxygen species (ROS)
    • Inhibiting spore germination
  • Strengthening cell walls
    • ISR increases the production of lignin in the plant (Note: Lignin is an organic substance that binds together cells, fibers and vessels within plant tissue. An increase in lignin in the plant adds to the thickness and strength of cell walls.)
    • This, in turn, helps plants resist pathogen attack more effectively
    • It also helps improve plant vigor and may reduce susceptibility to lodging
    • Promoting plant growth
    • Regalia Rx increases photosynthetic activities
    • It also stimulates the production of chlorophyll and phytohormones.

The product is synergistic with other fungicides. It is the only commercially available fungicide with a FRAC code of P5 so it adds another mode of action to a fungicide program, which has potential to improve overall disease control and plant health.

Mostly recommended as a foliar application (ground or aerial), Regalia Rx is also labeled for use as a soil treatment against soil-borne plant diseases. Trials comparing soil and foliar applications are in progress.   

For more information, visit

Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...

Related Articles

Comments (0) Leave a comment 

e-Mail (required)


characters left

Grain Storage Systems

Behlen Grain Storage Systems offers large capacity bins with diameters from 16’ to 157’ and capacities exceeding 1,500,000 bushels. All ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form