[The Brazil Times nameplate] Overcast ~ 58°F  
High: 64°F ~ Low: 57°F
Friday, Apr. 29, 2016

The two situations with soybeans

Wednesday, July 11, 2012

This year we are dealing with two different scenarios when it comes to soybeans.

The first scenario involves the beans that were planted in a timely manner and were able to have good root development.

These beans have smaller leaves and are often seen flipping over and showing the silvery underneath of the leaf.

This flipping over (and even clamping shut) limits photosynthesis from taking place and allows the plant to conserve energy.

Clamping refers to when the two outer leaflets on a trifoliate close together with the middle trifoliate within it.

As they clamp shut, their silvery underneath is all that is exposed.

The second scenario is the soybeans that were planted later in the year around the end of May.

These beans have received variable moisture, resulting in some stands that appear to be non-existent.

Currently, this group of beans are stagnant in growth.

Some of the beans within this group will continue to hold on, however others may not be able to hold on much longer.

Like corn, soybeans don't like drought and heat stress either.

This weather results in poor flower retention and can also impact seed fill.

The one positive is that soybeans have a longer pollination window that lasts four to six weeks.

Thus, the next three weeks is an important time in most soybeans' life to determine how successful this year's yields will be.

This year, it is already predicted that instead of having 18-20 nodes per plant, farmers will only 14-15 nodes, which will hurt yield in some regard.

Farmers are encouraged to walk their fields in August to determine their yield potential.

For more information about how the soybeans are handling the drought, go to: https://ag.purdue.edu/extension/eden/pag.... Purdue University is an equal opportunity/equal access/affirmative action institution.

Respond to this story

Posting a comment requires free registration: