Precision Pays

“Precision Planting’s business is trying to make sure seeds get into the right space at the right distance and seeds only land where they need to land,” Precision Planting’s Jason Larkin explained to me during the Farm Progress Show. We use precision technology to know where the tractor is at and where the plant is at to control population, so we can increase or decrease populations based on soil types, continued Larkin.

In addition, they use swath control, or the ability to turn individual rows on and off using GPS so that a farmer who is planting corn doesn’t overlap. This helps to eliminate yield loss that comes from over planting as well as saves farmers on their seed costs.

In a corn husk, pardon my pun, Precision Planting uses variable rate technology to help farmers understand how to pick the right population for the area they’re in. And this is important. “For every percentage improvement we can give someone for accuracy, from 95 percent of the seeds placed correctly to 97 percent of the seeds placed correctly, that equals a $10 per bushel yield advantage.”

You can listen to my interview with John Larkin here. John Larking Talks Precision Planting

Farm Progress Photo Album

As the nights begin to cool, we know harvest is just around the corner. But before your mind gets totally wrapped around the culmination event of your hard work, take a break to visit and learn at one of the best outdoor farm shows, the Farm Progress Show, Aug. 31 through Sept. 2 near the central Iowa community of Boone.

If you’re going to the show, Ag Leader Technology has a special free t-shirt offer with a chance to win an EDGE display. Before you go, just visit the Ag Leader Facebook page and click on the invite under the tab ‘EDGE Giveaway.’ Then fill out the survey and bring it to the Ag Leader booth (Lot 517).

While at the booth, check out the live demonstration of the OptRx Crop Sensor. A Hagie sprayer, complete with the OptRx sensors, INTEGRA display and ParaDyme steering system, will be gathering crop condition data on live corn plants.

Also check out the new SMS Mobile PC software that will be available this fall for PC-based devices such as laptops, netbooks and tablets that run Windows XP, Vista or Windows 7.

And stop inside the tent to learn more about all the products from Ag Leader—from displays and guidance to planter/sprayer controls and software that handles all the data. Product experts will be on hand to help you learn what can best fit your operation.

Visit these links for more information.

Farm Progress Show Website http://www.farmprogressshow.com/

Ag Leader Precision Point Blog: Calling Farm Progress Show Attendees!
http://www.agleader.com/2010/08/23/calling-farm-progress-show-attendees/

Ag Leader Facebook page http://www.facebook.com/AgLeader?v=app_4949752878

Survey for Free t-shirt and EDGE drawing http://www.agleader.com/mirror/FB-EDGE-Survey.pdf

OptRx Crop Sensor http://www.agleader.com/products/directcommand/optrx/

Fall Release of SMS Mobile Software http://www.agleader.com/2010/07/19/ag-leader-announces-fall-release-of-sms-mobile-pc/

Producers came to learn at the recent Precision Ag Expo field days held recently in North Dakota. Numerous questions, according to a story in Farm & Ranch Guide, aimed at gathering facts about zone maps, satellite imagery and variable rate precision farming.

Kelly Sharpe, of GK Technology, Inc., in Halstad, Minn., said his company creates variable rate mapping, taking an image from a field and creating zones based off of this input image.

Zones are soil sampled and fertilizing and seeding maps are created. The producer receives a prescription that he can input into his GPS system to apply fertilizer and seed at the correct rates while traveling across the field.

“Economics has forced us to make more money off the same acres,” Sharpe said. “There’s a lot of variability in every field caused by topography and soil types. Maps can show you where there might be more leaching of nitrogen or different soil types requiring different treatments.”

“You could put 30 pounds of nitrogen on the top of your hills and 90 pounds on the bottom of your valleys and it might not be accurate,” he said. Zone mapping is the solution to putting on the right amounts, and it can be done “right from the cab,” Sharpe said.

Check out this piece to learn more about the benefits of satellite imagery and variable rate manure application.

ARS researchers have developed a way to make more precise agricultural maps of fields from data generated by LIDAR (light detection and ranging) sensors to help farmers target more of their resources to the highest-yielding parts of their fields. Graphic courtesy of James M. McKinion, ARS.

Using an airplane with LIDAR (light detection and ranging) sensors is helping USDA-ARS researchers build better management zone maps that can accurately predict yields based on topography.

With the maps fed into computerized, variable-rate fertilizer applicators, precision farmers can divert more of their costly fertilizer to the highest-yielding zones and the least to the lowest-yielding zones. They can also use the zone maps to make other decisions, such as planting more drought-tolerant varieties in low-yield zones, or sowing less seed.

Five years of comparisons between these maps and actual “on-the-go” yield monitoring for cotton and corn on a farm in Mississippi showed that accurate yield predictions can be made based on topography.

Researchers contracted to have a plane with LIDAR (light detection and ranging) sensors fly over the 1,000 rolling acres of the farm. LIDAR is a form of radar that can map elevations digitally, showing slopes and sun exposures, by bouncing laser light off the landscape.

By blending yield results with the maps, the scientists divided fields into high-, medium-, and low-yield zones.

One advantage of LIDAR landscape mapping is that it only has to be done once.

LIDAR topographic mapping is spreading from state to state. Louisiana, for example, has financed LIDAR mapping of the entire state.

Otherwise, it is expensive for an individual farmer to pay for LIDAR mapping. So, McKinion is also looking for alternative topographic mapping techniques.

James McKinion, an electronics engineer at the ARS Genetics and Precision Agriculture Research Unit at Mississippi State, Miss., did the study with entomologist Jeff Willers and geneticist Johnie Jenkins at the ARS unit in Mississippi. This research was published in Computers and Electronics in Agriculture.

ARS is the principal intramural scientific research agency of the U.S. Department of Agriculture (USDA). This research supports the USDA priority of promoting international food security.

As corn continues to grow across the Midwest, areas of heavy rain in portions of states may cause more problems than just pond replanting. Loss of applied Nitrogen can cause valuable yield loss.

I spoke with Cory De Jong, Certified Crop Advisor and GIS/Agronomy Sales at Sully Cooperative Exchange in Sully, Ia. today. They tested the Ag Leader OptRx crop sensor system last year during all the heavy rains. “We strictly used the sensors on a sprayer for mapping purposes, as we weren’t set up yet to apply nitrogen. And we saw a lot of (plant health) variability in fields, covering several thousand acres that we mapped,” he says.

“Last year, sidedressing N definitely paid due to all the spring rain we had here in central Iowa. On average, growers gained at least 15 bushels an acre by sidedressing. And if they applied variable-rate, they could have gained 30 bushels,” De Jong says. “We saw 50 bushel per acre differences within fields with the OptRx. So this year we’ve got a bar ready to custom apply with OptRx to apply sidedress N. And we have a bar with OptRx that customers can rent, too.”

De Jong says there is a lot of hog and chicken manure used by customers in his territory, and they are interested in this sensor technology. “For example, one grower who has a lot of hog buildings wanted to know how much N he was getting from his manure. We used the sensors to shoot the plant leaves and saved him input dollars. And in some areas the N gets reallocated to areas of the field where N is needed most,” he adds.

He feels this sensor technology will gain more and more users, once growers see the benefits of variable-rate application. “As interest picks up, we’ll add sensors to a sprayer that will just be dedicated to sidedressing. We may be losing some N business due to manure, but we’re gaining business by helping customers apply N only where the sensors detect it is needed—as well as how much the plants need.”

For more information, visit

OptRx Crop Sensor http://www.agleader.com/products/directcommand/optrx/

Ag Leader Products http://www.agleader.com/products/

Sully Cooperative Exchange – Agronomy Dept. http://www.scecoop.com/index.cfm?show=10&mid=7

Certified Crop Advisors https://www.certifiedcropadviser.org/

Auburn University biosystems engineer Jonathan Hall recently highlighted the value of prescription maps and VR (variable-rate) application to reduce runoff and save up to 30 percent in annual costs.

With the spring growing season finally underway, many Alabama farmers are fertilizing their fields to enhance crop yields. Most people are familiar with farm-grade fertilizers such as 8-8-8 and 10-10-10. Granular fertilizers are meant to be worked into the ground or sprinkled around plants. It is recommended that they be worked into the ground prior to planting. Granular fertilizers take longer than liquid fertilizers to dissolve into the soil. They can last anywhere from 1 to 9 months, depending on the type. The nutrients need time to break down with some watering, and it usually takes a few days to see results.

Variable-rate technology (VRT) is recommended when applying granular fertilizers. By using VRT, farmers can apply fertilizer and nutrients on a site-specific basis. However, organic fertilizers, such as manure and poultry litter, are commonly used in Alabama. Poultry litter is used extensively in the northern half of the state due to the state’s growing poultry industry. In Alabama, about 2 million tons of poultry litter is generated annually with 90% of it land applied as a fertilizer or soil amendment. Over the years, continuous application of litter has generated environmental concerns due to excessively high phosphorous levels. Therefore, the use of guidance systems, VRT, and other precision agriculture technologies can be used in an attempt to reduce over-application and application in undesired areas.

By forming prescription maps and using VRT during the application process, runoff is reduced and the field is provided with site-specific nutrients. It is also economical! Research has shown that up to 30% of annual costs can be saved. This includes the cost of fuel, labor, and the fertilizer itself. While money is being saved, crop yields are also improved by providing the plants with nutrients as needed throughout the field. By incorporating VRT into the application of granular fertilizers, Alabama farmers can be economical while being good stewards of the land at the same time.

For more information visit www.alabamaprecisionagonline.com.