Groundwater Decline More Complicated Than Irrigation

Ground water across Texas has declined over the last eight years.  Mostly due to irrigation in agriculture and population growth.  However, a Texas A&M AgriLife Research study has identified other factors having an impact.

Groundwater decline has been the most server in the last four decades.  But not all the news is bad according to Dr. Srinivasulu Ale, AgriLife Research geospatial hydrology assistant professor in Vernon.

In a recent interview with South West Farm Press, Dr. Ale, who help write the book "Long-term (1930-2010) trends in groundwater levels in Texas: Influences of soils, land cover and water use," along with Dr. Sriroop Chaudhuri, said they conducted the study because by 2060 the states population is expected to double.  This will increase the demand for water at a time when water supply is expected to be reduced by 10%.

"We wanted to know which areas are more vulnerable to water shortages," he said.  "In order to plan and implement strategies to deal with the water level declines, we needed to know how these levels were declining spatially and temporally."

BASF Commitment to Research

What is BASF researching?  And what is the amount of effort and money they are putting in?  Markus Heldt, President, BASF Crop Protection recently answered those questions in an interview by Agriculture.com.

Harvest Tips

Wheat harvest has begun across the country.  Agriculture.com wanted to give you a few tips about harvesting and double planting soybeans.

The ideal moisture to harvest wheat is between 20% to 14%.  Below 14% you'll start to see yield loss.  Rain can also lower test weight and quality if below 14%.  Air drying the wheat will give you the best quality.  For long term storage make sure the wheat is dried to 12.5%.

If you notice head scab, be sure to increase your fan speed and use air to blow out the light, discolored kernels.  If you're going to store wheat with head scab, be sure to dry it quickly down to 13% to help stop the spread.  Below is a picture of wheat with head scab.

Remember that 17 kernels per square foot left behind the combine is about 1 bu./A.

Cut the wheat at 8 to 12 inches.  The taller stubble helps maintain soil moisture and encourages more height from the double crop soybeans.

If you are planning to store to stubble, keep in mind the fertilizer you are removing.  Wheat straw can remove 0.68 lbs of P205 per bushel and 2.03 lbs of K20 per bushel.  So 80 bushel wheat straw will remove 54.4 lbs of P205 and 162.4 lbs of K20.

If you are not planning on baling the straw, be sure to setup your combine to spread evenly across the field.  This will help even out double planting soy beans.

Double Planting Soybeans

When planting double crop soybeans select a medium to long season variety.  It normally takes soybeans 90 days to mature, so be sure to give yourself time for the average first frost.  

For the best double crop, make sure to plant 15" rows and narrow.  We want to encourage fast growth and a quick canopy.  Plant higher than normal populations, most double crop soybeans are planted in 15" rows at 200,000+ and 220,000+.

The most important thing to remember is to plant with good moisture.  Good seed to soil contact with moisture equals quick emergence and a higher yield.

Michelin's New Tire

Delta Farm Press recently announced that Michelin North America is going to introduce a new extension to its popular AgriBib lineup later this year.

The new Michelin AgriBib 480 95 R50 model is a taller sized, rear fitment tire designed primarily for larger, front-wheel assist tractors to handle bigger loads.  It can also be used during crop applications on large, four wheel drive machines.

James Crouch, farm segment marketing manager for Michelin North America, said the Michelin AbriBib 480 95 R50 features ride quality compared to some of the best in the market.  It has long lasting tread, better traction and impressive clean-out.

Michelin is going to partner with John Deer and Case New Holland on the launch into the North American market.  This will take place in the fourth quarter of 2014.  Initially the tire will be available on new equipment purchases and then later available as a replacement tire.

For more information go to Michelin Media.

Herbicide Resistant Weeds

South East Farm Press recently published an article about the damage herbicide resistant weeds can do.  A four year study by Weed Science shows how devastating a single herbicide resistant weed can be to a crop field.

The research covered fours years and four different fields of cotton in Arkansas.  In the study, 20,000 seeds of glyphosate-resistant Palmer amaranth was released into a field and untreated and allowed to escape.

In one of the fields there was a total crop failure.  This shows the need for a zero-tolerance threshold when it comes to weed management.

Seeds can be spread by wind, water, animals and humans.  Seeds such as palmer amaranth can float on top of water causing it to spread rapidly in a field.  Palmer amaranth has prolific seed production rate, rapid dispersal and high competitiveness with crops making it very difficult to control.

In the Arkansas study, only glyphosate herbicide was used.  In the first season, a patch of Palmer amaranth grew 375 feet from the original planting location.  In the second season, the weed reached the field boundaries and infested 20 percent of the field area causing a significant yield decline.  By the third season, the weed had completely covered the field, making it impossible to plant any cotton.

This study easily shows how using only one form of herbicide can be ineffective when it comes to defending your farm from weeds, especially Palmer amaranth.  It also shows the need to keep all resistant weeds in a controlled area.  Weed control based on an economic threshold does not adequately consider the soil seed bank and the risk for herbicide resistance.

Waiting for Proper Time to Irrigate

With seemingly abundant water supplies in the five Delta states of Arkansas, Louisiana, Mississippi, Missouri and Tennessee, many can't understand why anyone would ever have to irrigate.  Crop histories show that at some point in every season irrigation would pay dividends in the five state area.

Recently Jason Krutz, irrigation specialist with Mississippi State University, took an ag editor from Delta Farm Press on a tour to educate about water issues facing the Mississippi Delta.  He discussed how the use of flow meters, moisture sensors, and surge valves have helped farmers grow the same, and sometimes, more crops with less water.

Krutz and several members of the Mississippi Sustainable Water Resources Task Force stopped at a field operated by Tim Clements near Leleand, MS.  They demonstrated how the new technology could one day help farmers alter the current situation in which Delta farmers are removing more water from the alluvial aquifer than it is taking in.

Corn Looking to Rebound

After having a rough May and June grain futures are trying to rebound on the heels of last Friday's modest gains.  Heavy rain in the Northwest of the Corn Belt could end up doing more harm than good.  However, Kansas City futures show strength that could trigger a short covering rally.  Otherwise, the saying of "rain makes grain" is being put to the test.

Farm Futures Senior Editor Bryce Knorr talks about the market with Robert Hahn, Valley News Live TV, Fargo.

To hear the interview click here and scroll down to the bottom of the article to find the audio link.