|Posted on March 6, 2017 at 10:55 AM||comments (0)|
This is a great link to find out more information on the new Asgrow Roundup Ready Xtend Soybeans. It has great information on traits, chemistry, spraying application, and more.
|Posted on February 2, 2017 at 10:25 AM||comments (0)|
Climate FieldView is putting on seminars for growers to inform them of Climate's latest changes and new addtions. The link below shows the dates and locations, as well as a link to register.
|Posted on December 6, 2016 at 3:45 PM||comments (0)|
Most farmers know that fertility is a huge player in how well your crops will do throughout the growing season. But what exactly do some of these nutrients do for your crop?
Nitrogen is the most important nutrient for corn growth and greatly affects yield. If the corn plant does not have enough N at any growth stage, it will ultimately affect yield. That is why the timing and application of N is so critical. Fall applied N is at the highest risk of loss depending on weather conditions. Corn uses about half of it's N supply between V8-VT. By splitting up the applications of N, you are giving the crop what it needs, when it needs it. Nitrogen also plays a crucial role in ear developement and gaining kernel depth.
Phosphorus is also very important for corn production. Phosphorus helps with root growth, both in the spring and throughout the growing season, seedling vigor, hastens crop maturity, and increases yield. We recommend P1 levels should be at least 20ppm in dryland soils and at least 25ppm in irrigated soils. We like to see a 2:1 ratio between P1 and P2. P1 is the phosphorus that is readily availble in the soil for the plant to uptake. P2 is the phosphorus that is not readily available to the plant. If P1 levels are low and P2 levels are fairly high, this suggests that there is something tying up the phosphorus and not allowing it to be taken up by the plants. Two things to look at when this happens are either high or low pH, or high magnesium levels. We also need to consider crop removal from year to year when planning to fertilize. One bushel of corn uses .35 lbs of phosphorus. For example, 200bu/a corn uses 70lbs/a of phosphorus. This means that we must apply at least 70 lbs of actual P to keep levels where they were at for 200bu/a corn. (Ex. 100 lbs of 11-52-0 is 52 lbs of actual P). If you want to build P levels, it takes 18lbs of P above crop removal to build 1 ppm.
Potassium helps increase disease resistance, helps with root growth, and also helps build stalk strength. We recommend that K levels should be at least 150ppm. Most, but certainly not all, of the soils around our area are failry high in K. Unless K are below 150ppm, we usually don't recommend any K be applied. If you are applying 0-0-60 for a potassium product, this means that for every 100lbs of 0-0-60 you apply, you are getting 60lbs of actual K.
Sulfur helps with root and plant growth, chlorophyll production, and is a good amendment for salinity soils. Most sulfur is found in organic matter, as one percent of organic matter can supply about 2-3lbs of sulfur. It is also important to keep crop removal in mind for sulfur. 150bu/a corn will remove 14lbs/a of sulfur.
Zinc, like sulfur, also helps with chlorophyll production, and is linked with iron and manganese. We often see zinc deficiencies in sandy soils, soils with low OM, and soils with high pH. We typically don't see a yield response from applying zinc unless soils are deficitient. We often see zinc deficiencies in the spring with cool wet conditions. High P levels can also reduce the availability of zinc causing deficiencies. Interveinal chlorosis in the youngest leaves is a symptom of zinc deficiency.