Not that many years ago, the standard method for introducing a product was research and development. Now, most of the products introduced as soil or fertilizer amendments are development and maybe research. And if the research does not support the product use, just ignore it.
Here are my recommendations for application of anhydrous ammonia and urea in North Dakota in the fall. No fall anhydrous ammonia or urea on sandy loam soils or coarser or soil that floods regularly in the spring. Do not apply any anhydrous ammonia or urea until the calendar hits October.
As in the past, soil testing for residual nitrate immediately following early crop harvest in August is perfectly acceptable.
The soil this August is behaving differently than during last year’s dry period. Last year, the soil on higher clay soils was very hard and worked up very cloddy.
The revision of the Soybean Fertility circular has just been published.
The economic incentive to increase protein in spring wheat to avoid discounts or realize a greater protein premium so far this season is low.
Soybean in the state always looks green as it emerges. Iron in soybean is mobile in the plant until the first trifoliate leaf emerges. At that time, for some mysterious reason iron becomes immobile in the plant and has to be taken up fresh for each increment of added tissue.
As I am writing this at 3 AM making sure my sump pump doesn’t die, it is clear that scattered showers means something different than it did years ago.
Ninety-seven percent of scientists agree that man-made global warming is real, and the 3 percent of scientists that do not think global warming is influenced by human activities are far below their colleagues in their expertise. This is a paraphrase from a paper written in 2010 by Anderegg, et al. in the Proceedings of the National Academy of Sciences of the United States of America.
Calls this week have been heavily focused on yellow corn and some yellow wheat.
The dust/mud of planting season is just about over. Due to the astonishing amount of water (can we really call it rain?) that has fallen in many parts of the state, losses of N may have been high due to leaching in the west and denitrification in the east.
There are areas that have received a great deal of rain during the last few weeks and areas with just enough rain. Too much of a good thing has some growers worried that significant nitrogen was lost during the wet period which appears not to be over yet. So the following are IF’s and an estimate of loss to date (May 28).
Over the last 20 years of wetness, the elimination of tree rows has progressed. There has been little wind erosion during the wet years. On May 14, however, many growers were given a little taste of what it must have been like at the beginning of the 1930’s.
The planting season, especially in the northern half of North Dakota, will be extremely compressed. Less than normal fall fertilizer application will mean that many fertilizer dealers will have long waiting lists for fertilizer application this spring. Since the dates are already ticking away, and planting dates optimal for highest yield potential will be reached in the next week or two depending on where the field is located, waiting several days for a fertilizer applicator to show up before planting is not a reasonable decision.
Growers are already considering fall application of nitrogen. The following are guidelines meant to decrease the risk of nitrogen loss in early spring.
There are counties in North Dakota that have suffered severe drought, but miraculously most of the state has avoided the disastrous yield losses of many central and southern US states this season.
Most years the small grain harvest, especially wheat, happens in mid-August. This week harvest will start probably the last full week of July- about 3 weeks early.
This season the relative incidence and severity of iron deficiency chlorosis (IDC) surprises even me. During the last 10 years, the presence of IDC and its severity seemed to be related to particularly wet areas of the field.
As crop prices have increased, so has the increase in the use of plant analysis. I generally think that this is a good trend, but the manner in which most are used is questionable. The correct use of plant analysis is as follows: