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manure management

Feb 03 2012

Planting into “Out of Control” Peas – The Rest of the Story

In September 2011 I posted about an Ohio farmer that planted into “out of control” peas and shared about his story of how the field was looking pre-harvest.  I have recently visited with Dave (the producer) and he shared the information that a number of you asked for…and also surprising yield data. Dave farms with his father-in-law Ron in Mercer County, Ohio near Rockford (NW Ohio).

Sometimes it takes courage to farm with cover crops! Dave and his father-in-law Ron planted with confidence as the ground was "very mellow" compared to other ground without a cover crop.

Here are Dave’s observations and the 2010-2011 field history:

  • Hog Manure applied late summer of 2010 – 5000 gal/ac
  • No other fall fertilizer
  • N-Vest Groundbreaker Mix (Austrian Winter Peas and GroundHog Radish) planted Labor Day weekend 2010

Peas that survived – and other weeds, wheat, clover, etc. – were sprayed (after a wet, wet spring) on June 2, 2011.

________________________________________________

Herbicide/Insecticide Mix: (rates per acre)
20 gal Water
Alliance – .2 gal   (1 gal/100 gal water)
Roundup WeatherMax – 44oz
Weedone 650 – 1pt
PowerLock Surfactant – 6oz
Baythroid (insecticide) – 2oz

Corn was planted on June 3, 2011.

Additional Fertilizer applied (in addition to nutrients from manure and N from peas)

20 gal/ac 10-34-0 starter fertilizer with 1qt/ac zinc

40 gal/ac 28-0-0 side dress with Agrotain N stabilizer

Results

Even though several acres in the area were too wet to plant this field of peas was in great shape as you can see the row closed "perfectly" behind the planter.

Weigh wagon test showed 215 bu dry yield.  Dave guesses the whole field average was between 200-215 dry (he has no scales at home to check weight of entire crop).
Dave also thinks that the yield was 10-15 bu better that most of their other corn (w/o manure and w/o cover crops).

The seed placement of this no-till planting into the peas was "near-perfect".

All things considered…the wettest spring in Eastern Corn Belt History, late planting date, planting into 3+ foot tall peas, < 1″ of rain in the month of July (with 22 days 90 degrees or more), a wet fall that delayed harvest..and the result was over  200 bushels/acre.  I’d take that everyday for that part of Ohio, and so will Dave and his father-in-law Ron.

The roots on the peas were massive by early June. Don't expect this in most years but this certainly did not hinder planting, getting a good stand, or attaining a very high yield!

Other observations from Dave:

Positives:

Better soil structure

Deeper root penetration by corn roots

Great seedbed to plant into

Great soil cover after cover crop was killed

Better water retention thru the dry months

Nutrients saved from hog manure

Negatives:

Too much growth in wet spring

Took a lot of time to plant due to pea growth

 

Thanks Dave for sharing your story!

Written by Dave Robison · Categorized: Austrian Winter Peas, Cover Crop Challenges, Planting into Tall Austrian Winter Peas, Types of Cover Crops · Tagged: Austrian Winter Peas, corn, Cover Crop Radish, cover crops, Groundhog radish, high yields, manure management, nitrogen production, no-till, nutrient management, soil health, soil structure, Tillage Radish

Dec 30 2011

Cover Crops in the Great Plains – a view from a long time cover crop user- Part 1

I’ve had the privilege of meeting a gentleman from Kansas named Paul Conway.  Paul is an avid “cover cropper” and he has been for nearly 20 years! Paul reminds me of my father, who was an early pioneer of no-till (over 40 years of no-tilling on our farms).  I have asked Paul to give a more western feel to this blog since he has a different perspective on some of the cover crops that work well in the Great Plains that I typically don’t share.  I will be using Paul’s writings with his full permission.

In this post I will share Paul’s perspective on how and where cover crops fit in different systems.  Again, these are Paul’s views from his perspective, of which I find myself agreeing with.

Vegetables:  Using cover crops is vital for long term sustainable vegetable production.  Vegetables are fertility hogs. Intensive vegetable production will ruin soils no matter how much fertilizer you use. Fortunately the quick maturity and low residue of most vegetables allows many opportunities for the use of cover crops, more so than with field crops.

This is good and bad news. The variety of choices can overwhelm growers who want simple answers.  Use manure whenever possible in vegetable production to build organic matter especially when used with the cover crop grasses such as sorghum-sudan, grain rye, annual ryegrass, etc.

There are many opportunities for cover crops in both conventional and organic cropping, actually more so than in field crops.

Traditional field crop systems:  By this I mean the 1940-50’s ideal of animal husbandry and cash crops on the same farm supported by a varied rotation of row crops, small grains, and forage legumes (either alone or with grasses).  Cover crops are useful but not vital, as the rotation and manure application keeps the production system going.  Cover crops allow modifications to the rotation. Also annual warm and cold season grazed cover crops saves money and further diversifies the rotation.

Modern monoculture field crop systems: Corn and soybeans aren’t much of a rotation since they are both row crop summer annuals.  Cover crops are vital to long term sustainable field crop production since they essentially mimic the effects of a decent rotation as well as provide the agronomic benefits that you are well aware of.  Cover crops are easier to use if small grains are added to the rotation.

Grazing: Grazing warm season as well as cool season cover crops is a direct financial benefit of cover crops, as opposed to the recognized indirect financial benefits and adds diversity to the rotation.

 

A Note from Paul Conway about who he is and about his experiences:

I grew up mostly overseas and I have gardened all my life.  When I was a teenager I worked on farms in the summer.  I retired from the US Army in 1993 and started my market garden to grow vegetables commercially.  I have done this ever since except for 17 months in 2006-7 when I was recalled to active duty and sent to Iraq.

I have farmed organically since 1993. I was organically certified from 1994 until 2004 when I switched to Certified Naturally Grown, a certifier more friendly to small scale local market vegetable growers.  

I should say that organic farming does not work unless you pay almost fanatic attention to building and maintaining healthy soil. This means good crop rotations with a mix of row crops, small grains, and forages.  You must use manure (if available) and cover crops/green manures.  The degree of mix between the two is complex and farm dependent.  Simply switching to organically approved inputs without a good soil building rotation will not produce good yields.

Also, thanks to Paul for serving the USA in the armed services!

Written by Dave Robison · Categorized: Cover Crop Benefits · Tagged: corn, cover crops, Cover Crops in the Great Plains, fertilizer, grazing cover crops, manure management, manure management with cover crops, row crops, soybeans, sustainable agriculture, vegetables

Nov 03 2010

Radish / Pea Mix Video

I have been visiting a  farm in eastern Whitley County Indiana over the past month and have seen a few fields of an Austrian Winter Pea/Radish mixture.  These fields were wheat fields that had dairy manure knifed into them after they had been harvested and deep tilled.  The video shows what a great stand the farmer got and the growth of the radishes!  We found one plant that had a 28+” deep tuber/tap root.  That’s how much was in the soil!  At 4″ below the soil surface I found where there had been quite a bit of compaction.  The radish was “crumpled” or “wrinkled” at the 4″ depth range.  Out of the 15 radishes we dug up only one radish had not bored through the compaction layer.

This GroundHog radish had a 28+" deep tuber/tap root.
The Austrian Winter Peas were growing very prostrate in this field. When I lifted the plants up they measure over 12" tall to up to almost knee high.
The radishes showed where there was compaction that caused some wrinkling of the tuber. The tubers grew through that compaction which shows the powerful ability of the cover crop radish.

Written by Dave Robison · Categorized: Austrian Winter Peas, Radishes, YouTube Videos · Tagged: Austrian Winter Peas, cover crop radish varieties, cover crop radishes, cover crop seeding rates, cover crop selection, Groundhog radish, manure, manure management, nutrient management, Radishes, scavenge nitrogen

Oct 20 2010

Cover Crops and Manure are a Great Combination

Manure was captured by the annual ryegrass cover crop and was available for the following year’s corn crop.

During my past five years with the Midwest Cover Crops Council, I have heard cover crop experts say that “the farmer who has access to manure is the perfect candidate to use cover crops.”

I witnessed this truth up-close and personal this fall when visiting the Leman farm in NW Indiana.  The Leman family has a dairy farm and several acres of corn silage (the acres are usually planted to corn silage each year).  For years they fall applied manure to their fields with little nitrogen value being realized in the spring.

The soil is rather sandy and the manure had little to keep it in the soil root zone (but it had not been running off).  These past three years the Leman’s have been using cover crops in their corn silage fields with impressive results.  This year Scott Leman told me that he will “never stop” using cover crops because of the value they are finding.

Each year they leave sections of 30-36 rows in the silage fields that they leave for grain harvest.  In these areas they did not plant cover crops (until this year).

This fall Mark Perry, from CISCO Seeds, and I went to the farm with Randy Davis (Country Acres in Francesville, IN) and Curt Leman to see what difference we might find between where they had a cover crop planted (N-Vest® Soil Builder Annual Ryegrass Blend) and where there was no cover crop planted. The results were astounding…but not totally unexpected!

Where there was a cover crop there was much better plant health and bigger ears on the corn.  Curt was convinced that there would be a 20 bushel/acre or more advantage where there was a cover crop.

I did not take plant samples to send off to the lab to test forage quality on the silage, but I wish I had.  All I know is that there was more grain on a green stalk where they had the cover crop.  Where there was no cover crop the stalks were pretty dry nearly up to the ear and ~2” less grain per ear of corn.

The Lemans also cut back 50#/acre on their nitrogen application on their fields.  So, they saved $20+/acre on N cost and added 20 bu/acre on yield (at $4.50/acre) = PROFIT.  Save $20/ac — add $90/acre on yield = $110/acre. The seed cost was approximately $30/acre with $10 cost of application.

$110 – $40 = $60/acre added profit from using a cover crop.

Add in the benefits of cleaner water, less wind erosion, improved soil biology, increased soil organic matter, and less potential for manure run-off, I’d say that the Lehman’s are right in using cover crops each year.

The photos below show some of the value. Click on them to see a larger view.

These ears were typical where manure was applied but no cover crop was utilized.
These ears were typical from the area where the Lemans used cover crops. There was approximately 2” of “extra” grain on each ear where they had cover crops.
This photo shows the silage corn where there was no cover crop utilized. The stalks were “firing” up to the ears.
This photo shows Curt Leman in the silage corn where there was a cover crop utilized. The stalks were healthy and green.These stalks were approximately 30’ away from the stalks shown at the left.

Written by Dave Robison · Categorized: Higher Yields, Manure management · Tagged: Annual Ryegrass, corn silage, cover crops, manure, manure management, manure management with cover crops, scavenge nitrogen

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