Up and down the hill

Traveling along the country-roads in the hills of the South-east of France you've a varied view on woodlands, fields and pastures.

Here you see a common field where barley was cultivated and already cropped. But now it's for a while the kingdom of weed. In spite of all herbicides the growth of the Sinapis arvensis is abundant.
So sorry I don't know the English name - in Dutch it's Herik - and due to a poor internet connection I'm not able 'to google' it within an acceptable length of time :((

One of the most important reasons is the enormous production of seeds. One single plant could produce till 25,000 (!) seeds. And this seed can still germinate after 25 to 50 years. In other words: seeds get deep in the ground while ploughing the field. After years of repeatedly ploughing the seeds get after a few decades at the surface and can still germinate!

Sinapis arvensis was already known in the Bronze Age (Switzerland).

This is the 6th trial to get my blip uploaded since yesterday (16th) night 9H10 pm!