The Seed Consultant October 2014

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vol. 34

October 2014

The Seed Consultant

A B I - M O N T H LY N E W S L E T T E R N E W S A N D V I E W S F R O M T H E F I E L D

Soil Compaction: Causes, Effects and Cures The effects of soil compaction caused during spring show up in fields during summer and fall. It is one of the most important factors that can affect soil health and reduce yields. Compaction may be caused in many ways. We need to diagnose the reasons for compaction on a field by field basis before corrective measures can be taken.

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Surface Compaction • Surface compaction can occur from impact of rain drops or in the form of crusting due to excessive rains and ponding. If soil is left bare and is exposed to hard rains or irrigation water, impact of water breaks down larger soil aggregates and granular structure of soil on surface are degraded, causing compaction.

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FALL HERBICIDE APPLICATION Preventive measures now; increase yields in 2015

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WALK FIELDS BEFORE HARVEST Prevent ear rot impact on overall yields

• Surface compaction can affect water infiltration into the soil and interfere with seed germination and seedling emergence. If seedlings cannot break through the crust, it can lead to reduction in plant populations and yield. For short term solutions, the crust may be broken by light disking or other tillage tools to help the seedlings to emerge. • To prevent crusting, we need to leave a protective layer of crop residue on surface or cover crop and use of minimum or reduced tillage practices. The residue layer should help in absorbing the impact of rain drops before they can hit and breakdown the soil structure. • Use of forages in crop rotation can also help in improving granular structure of soil and reduce surface compaction from irrigation. Proper management of irrigation water to control proper infiltration is very important.

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YIELD CONTEST Meet the Project 150 Wheat Yield Winners

Subsurface Compaction

Wheel Traffic and Equipment Everyone knows that soil compaction may be caused by wheel traffic and farm equipment and it cannot be avoided. Tractors, manure spreaders, trucks, grain carts, combines, and other farm equipment can cause considerable pressure on sub-soil, continued on page 2

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BULK BINS Top 5 reasons to join the bulk bin movement


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