I don't know anything about synthetic innoculants. What I've used is a naturally occurring soil microbe that works with the bean plant to fix nitrogen from the atmosphere - plants can't do that by themselves. If you've been growing beans successfully in the space in the past, the bacterium is already there and you don't need the innoculant - it will just continue to reproduce itself every year. If you do add the innoculant, it won't make your beans grow any better 'cause the ecosystem will only support a certain amount of the bacteria and the extra will just die off. If you're starting a new plot and want to make sure your beans have what they need, you have nothing to lose but $$ by adding the innoculant - it's organic. If your soil was previously used, say, to grow a chemically treated lawn, you probably don't have much of any healthy life in your soil and you need the innoculant in the first year. The only way to know for sure is to pull up a plant halfway through the growing season and see if it has lots of node on its roots (this is the clearest picture I could find www.agweb.com/assets/1/9/NewsMainIma ge /nodules_on_soybeans.jpg ). If it doesn't have the nodes, it's not able to fix nitrogen and you need to innoculate the soil, but it's too late for that year. So my take on it is why wait to find out? Oh, and if you have lots of clover volunteering on the soil before you turn it into a bean patch, that's just as good to know as having beans grow well there - if clover likes it, it's innoculated.
I'm sorry I have never heard of pink powder on seeds and I plant a very wide variety of beans (pole and bush), and peas and even sweet peas. I have used inoculant and usually forget that I have it until after I plant, so some in my garden have it and some don't. I have never noticed any difference in the plants. If you have it, it won't hurt to use it, but I found it's not necessary. Of course, soil and growing conditions are different, so if you notice that your beans don't do well then use it.
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So, is using inoculant considered to be an organic growing practice. And I've already planted peas and bush beans without inoculant being added, and I know there was no pink powder or any other color on the seeds.. 2 bean plants have started to flower. Is there a remedy at this time?
Is it necessary?
I've read a little, but I remember buying seeds in the past that had a hot pink powder and I wasn't supposed to touch them without gloves, etc. That was a long time ago, and my memory isn't reliable.
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