Dry soil conditions impact on nutrient availability

ONfruit

Deanna Németh, Horticulture Sustainability Specialist

Although the past week brought some much needed rain, many locations in Ontario were experiencing prolonged dry soil conditions.  These extended periods of very dry soil conditions can reduce Nitrogen (N), Phosphorus (P) and Potassium (K) availability to plants.   

dry soil 1Nitrogen

For N, low soil moisture decreases soil microbe activity. Microbes play an important role in breaking down organic matter and converting organic N to inorganic nitrate nitrogen, a process called mineralization. In dry soils with low N mineralization, there could be less plant available N in the form of either ammonium (NH4+-N) or nitrate (NO3-N) nitrogen.  In dry soils, the risk of NO3-N loss through leaching or denitrification is reduced.  While this means there is more soil N available to crops, plant uptake can be reduced.  When the rains return there a can be…

View original post 394 more words

About Sean Westerveld

Ginseng and Medicinal Herbs Specialist, OMAFRA
This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s