Home Farm Equipment Wild radish crept under the radar

Wild radish crept under the radar

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Over the previous few years, I’ve noticed an increasing number of wild radish in my analysis plots and in peanut manufacturing fields.  Whereas a lot of our consideration was targeted on Palmer amaranth, wild radish sneaked in.

It was not too way back that wild radish grew like a winter annual (germinate in fall/die in summer time) however now’s actively rising year-round. Not precisely certain what occurred right here however a quote from the standard 1993 film Jurassic Park sums it up properly “Life finds a way!”

Listed here are 10 wild radish information which may enable you to higher perceive this weed:

  1. Wild radish is a member of the Brassicaceae plant household which additionally contains cultivated crops similar to cabbage, broccoli, Brussel sprouts, and cauliflower.
  2. Wild radish isn’t native to the U.S.  It’s native to the Mediterranean areas of Europe, the Center East, and North Africa.  Wild radish was first talked about as an launched weed in the japanese U.S. in the 1820s.
  3. Wild radish isn’t the similar plant as wild mustard (Sinapis arvensis).  These are two very completely different crops.  I’ve not noticed a lot (or any??) wild mustard in my travels all through Georgia over the previous 22 years.
  4. The flowers of untamed radish are often yellow, however they will also be white or pale pink.
  5. Wild radish is a wonderful pollen and nectar supply for honeybees.
  6. Wild radish seeds are shaped in pods botanically often called siliques. 
  7. The seed don’t shatter from the siliques. The siliques should break down earlier than the seed will be launched for germination. Every silique can comprise from 4 to 10 seeds.
  8. Analysis performed in South Carolina indicated {that a} single wild radish plant can produce anyplace from 1,470 to 10,170 seeds/plant relying upon the time of yr that emergence occurred.  
  9. Wild radish emergence is considerably decreased when seeds are buried at depths better than 3.2”. Thus, deep tillage could be a really useful element of management applications.
  10. In Australia, wild radish seeds buried at a depth of 4” for 4 years have been nonetheless 43% viable.

Luckily, there may be excellent news concerning wild radish management in peanut.  In my analysis plots, I’ve noticed wonderful management (≥ 90%) of untamed radish with preemergence functions of Strongarm + Valor, early-post/cracking functions of paraquat + Storm, and/or postemergence functions of Cadre or Strongarm.  As with most different weeds, a program strategy that features tillage and a number of herbicide functions can be the simplest for wild radish management. 

Anytime one thing new seems in a peanut area, I’m not stunned.  It’s Mom Nature’s means of maintaining us humble.  However not like the early days of tropical spiderwort and Palmer amaranth, a lot is already identified about the biology and management of untamed radish. I’m optimistic wild radish won’t change into a significant weed drawback in peanut. 

As all the time, good weed searching!

Peanut weed management (23 DAP) with preemergence functions of Prowl or Sonalan + Valor + Strongarm in 2021 (numerous Palmer amaranth, wild radish, and annual grasses in the NTC plot). Credit score: Eric Prostko

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