• Philip

Why is my spring barley lodging “Mr Agronomist?”

Why is my spring barley lodging “Mr Agronomist?”

It’s not that thick or tall, we should have sprayed it with Terpal!

…Well let’s have a look at that a bit more closely.

Individual plants falling over at the base. A crop established by conventional planting methods drilled into a clay soil.

The ground has dried out and large cracks have formed. In so doing some plants root systems have been damaged or completely dislodged. The result; the plant falls over, dies prematurely and yield potential is lost.

The Terpal comment is a classic.

Released for field trials in 1966, ethephon was first tested on cereals to prevent lodging in 1967. Early trials were concentrated on winter wheat, spring wheat and spring barley in comparison with Chlormequat, at Zadok growth stages 25 to 31 Comparable or better control of lodging was obtained, but at high rates (2 - 8 lt / ha), which proved uneconomic.

Interest in a new anti-lodging product reappeared in winter barley with the rapid increase in the area sown and the known lodging problems, especially since no effective anti-lodging products existed. This interest coincided with the findings of Union Carbide's research group, that good height and lodging reduction could be achieved with lower rates of CERONE when applied at later stages of growth.

However the problems associated with ethephon’s application can be summarised by saying “a reduction in yield.” Therefore it is always best to use this active with caution not as a quick fix.

#lodging #springbarley #Terpal #ethephon #winterwheat #springwheat

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