Comment déterminer le taux de semis approprié
et évaluer la densité de peuplement
Le tableau ci-dessous vous aidera a contrôler le taux de semis ou a vérifier le nombre de plants. Il vous indique la longueur des rangs a utiliser pour votre calcul, soit pour une superficie égale a 1/5000 d’hectare, soit pour une superficie égale a 1/1000 d’acre en fonction de système de mesure de votre choix.
Effectuez plusieurs comptages des grains ou des plants sur la distance donnée selon l’écartement des rangs toujours en fonction de système de mesure que vous préférez. Calculez la moyenne des comptages afin d’obtenir un échantillon représentatif.
Ensuite, multipliez par 2000 pour connaître le taux de semis ou la densité de peuplement à l’hectare ou par 1000 pour les données à l’acre.
Écartement des rangs
Longueur de rang à mesurér
centimètres
pouces
1/5000 ha
1/1000 acre
38,10
15
13,10 m
34,10 pi
50,80
20
9,85 m
26,20 pi
71,12
28
6,95 m
18,60 pi
76,20
30
6,55 m
17,50 pi
81,28
32
6,15 m
16,40 pi
Exemples
Pour des rangs dont l’écartement est de 76,20 centimètres, une moyenne de
35 plants sur plusieurs sections de 6,55 mètres vous donnera un peuplement approximatif de 70 000 plants à l’hectare (35 x 2000).
Pour des rangs dont l’écartement est de 30 pouces, une moyenne de 28 plants sur plusieurs sections de 17 pieds 5 pouces vous donnera un peuplement approximatif de 28 000 plants à l’acre (28 x 1000).
The hoop method of determining soybean plant population is an accurate method to use for solid seeded soybean fields. By using the table below, the number of plants per acre can be determined by measuring the diameter of the hoop, counting the number of plants that are found within the hoop and multiplying that by the predetermined factor listed. Assess several locations in your field to determine the average number of plants found in the hoop.
Rains have delayed planting throughout many areas of the midwest corn belt. Check out this video this week (May 18-22) from Fred Sinclair Corporate Product Manager
View video by Fred Sinclair
There are some reports of European chafer and/or white grub activity again this year in the Lake Simcoe region. This was a particular problem in 2008 and may be something to watch for on sandy soil in the spring of 2009. It is important to identify which grub you may have in a field as well as the level of pressure. Read More –>2009 Watch for Grub Activity on Light Soils
There is some initial concern this spring of frost-heaved alfalfa in eastern Canada. This article will address how to assess hay fields and review management recommendations.
Read More –>2009 Assessing Frost Heaved Alfalfa
Increased early season growth, slightly lower grain moisture at harvest and higher grain yields can be some of the benefits from using starter fertilizer when planting in the spring. Starter fertilizers are a small amount of fertilizer applied near the seed to meet the demand of the seedling for readily available nutrients until the plant’s root system develops. They also enhance the development of the emerging seedling. The rapid growth and earlier maturity are important in areas where medium and short-season corn varieties are grown. Overall, the use of a starter fertilizer increases fertilizer efficiency and therefore reduces overall fertilizer costs. Read More –>2009 Starter Fertilizer
If there is one expression that seems appropriate this year it is the “Dog Days of Winter”. Everything from the extended snow and cold weather to the markets and input costs seems to be bordering on the depressive.
What to make of it? As a farmer I am an eternal optimist. We go through this blah season every winter to one degree or another and February is historically a period where the market dips given cash sales in the United States. Following the tectonic mountain type price swings we saw last year, anything short of the peaks seen last summer will seem like a mole hill in comparison. [Read more →]
In recent years the use of foliar fungicide applications in corn has become increasingly more common. Widespread adoption is growing however differences in grower approaches certainly exist. The following is a categorization of some of approaches to foliar fungicide application in corn. [Read more →]
In this update we will focus on a topic that has captured interest in the local farm press not only in terms of advertising space, but also articles that have highlighted the debate on the differences between traits and the advantage or disadvantages to particular trait platforms.
It is important to note the results from research conducted this year. Trial data from 2008 is once again confirming a yield advantage for PRIDE G3 hybrids featuring YieldGard VT Triple™ on rotated ground. Research coordinated by Monsanto and incorporating results from plots conducted by PRIDE Seeds is showing a yield advantage of 2.8 to 3.6 bushels per acre for YieldGard VT Triple hybrids when compared to products from the same hybrid family without corn rootworm protection. This advantage increased to over 10 bushels per acre in corn on corn situations. [Read more →]
I feel like I have been at the amusement park for over a year now when thinking about commodity price swings – and in particular stuck on the big roller coaster the kids talk about in the back seat of the car before they get to the park. Now I have never been a fan of roller coasters in the true physical sense as they have never been kind to my stomach, but in a metaphorical sense the commodity market roller coaster over the last six months has been enough to have even the most fervent fan reaching for the Gravol. So, where do we go from here? In the summer the news was all positive for commodity prices and they reached new heights - then they crashed hard. [Read more →]
-What do you want to Grow? Review in advance what hybrid maturities you want to grow and what herbicide program you are going to use. Do this on a field by field basis to make planning and buying easier.
-Compare apples to apples. Be sure to compare apples to apples when comparing hybrids. Where maturities are listed as the same, look at harvest moisture and be sure to ask how maturity and heat units are measured by each company.
-What traits are in the hybrid? Be sure to compare apples to apples. Remember that a double stacked hybrid with a high rate seed treatment is different than a triple stacked in terms of agronomic value and yield potential. Studies show that a PRIDE G3 type hybrid will out yield the same genetics in a double stacked by close to 4 bushels on average in first year corn and close to 10 bushels in a corn on corn situation.
-Did I order refuge corn? Be sure to order refuge corn that meets the requirements of the technologies you are buying.
-Read the fine print on programs. There is a difference between programs. For example some companies offer lucrative early pay discounts, but finance charges can start right away. Other companies like Pride offer prime minus financing and interest charges do not start until after planting in June. It is important to fully understand pricing and programs before pulling the trigger on the final sale
-Take Advantage of Early Order Programs. These are put into place to help you secure your preference in hybrid and seed size at an early stage in the decision process – and give you priority over customers who make their decisions at a later stage in the cycle. These programs also help companies plan their logistics in terms of bagging and shipping priorities through the winter. In most cases by placing an early order you not only secure the hybrid and seed size of your choice, but you also have more time and flexibility to change that order through to winter based on your final crop plans but still be able to take advantage of early order discounts on the bulk of your acres.
It has been very interesting to watch the ups and downs in commodity prices this year. With harvest now upon us what is abundantly clear is that going into 2009 Chicago will need to increase the price enough to buy at least an additional 5 million acres of corn. As of the writing of this article it appears that the size of the US crop is shrinking from a crop that started with 8% fewer acres planted than a year ago and will likely finish with 12% or fewer acres harvested. Add to this a late planted crop, excessive rainfall in several key production areas in the spring and the replanting of several million acres and the result is a dramatically reduced harvest. Also, there is a very high probability that South America will not increase their soybean acreage enough to offset a looming soybean shortage, setting up an acreage battle in the U.S. for 2009 that corn users feel they have to win.
Fred Sinclair, CCA-ON Manager of Product Development
This may very well be the year in parts of the US Corn Belt that corn and soybeans don’t reach the monstrous yield levels like we have seen in the past 2 or 3 years.
During the week of August 26th to 29th a group of us had the opportunity to travel by bus through Michigan to Chicago and down to Champaign, Illinois catching the upper edge of Indiana on the return trip to Ontario. After touring the Board of Trade in Chicago, we visited with AgReliant Genetics research and production staff at our Champaign Research Station. Along the way we stopped and viewed an ethanol operation and had an excellent discussion at a large family farm operation located just 40 miles north of Champaign. [Read more →]
2008 Ontario Corn and Soybean Crop - Weather Impacts
Jonathan Klapwyk,CCA-ON Market Development Agronomist
The Ontario corn and soybean crops are in overall good condition at the end of August. The growing season in many areas can be characterized as coming through a cool month of May and more than enough rainfall through the following summer months. Many field operations have been challenging to perform due to wet conditions and areas of fields have certainly been impacted. Hail storms have also hit many locations throughout the summer with yield losses expected to be greater the closer the crop is/was to tasseling. [Read more →]
It has been very interesting over the last few weeks to watch the media hype surrounding rising food prices and the link to grain derived ethanol. What is even more interesting is that for years and years agriculture in this country tried hard to gain the urban media spotlight given low commodity prices and desperate economic times on the farm. Only with protests that plugged traffic routes in our provincial and national capitals did we find a collective way to make the daily news in Toronto and Ottawa. [Read more →]
Producers have demonstrated, through the increase in trait use that they value the protection and yield advantage provided by these tools. To preserve the benefits of these technologies and to avoid the development of insect resistance, all corn growers are required and strongly urged to follow sound refuge management strategies…. Read more –> Refuge Corn
There are already some concerns about delayed corn planting in Ontario for 2008. At this point in time (April 4), there are still a number of days that will need to take their course before I am ready to get concerned about possible planting delays. Read more… ->Planting Date.pdf
The release of the USDA Planting Intentions Report on March 31st contained a couple of surprises that will create opportunities for this planting season……Read more –> USDA Report Article
The importance of protecting seeds and seedlings from insect and disease damage can not be over-stated. One of the most effective ways to protect the investment made in your seed and your crop is through the use of seed treatments.
In the past, the trend was to treat corn seed with seed applied fungicides but do little to nothing on soybean seed. Today it is a different story. Controlling insect and seedling diseases is just as important in soybeans as in corn. When you look at the yield advantage from traits and the accompanying cost per bag of seed, you must protect this investment. And with commodity prices at an all time high, growers should strive to maximize their yield opportunity. (Read more –>2008 Seed Treatments)
Along with good commodity prices, we are also seeing increased costs in other areas including fertilizer, fuel etc., etc., Many farmers are pondering the best avenue to take in terms of what to plant, soil fertility, starter fertilizers, what pays, what doesn’t . . . (Read more –>Rotation,Agronomics,Economics)
Our recent weather, financial markets and crop commodity markets go from low to high to low to who knows where - everyday! Corn, wheat and soybean markets have certainly offered some interesting price opportunities… (Read more –> Swing Acres in 2008)
Farmers look to save on input costs wherever possible. Sometimes, saving a few dollars on inputs may cost you more money in the end. (Read more –> Performance = Agronomic Value)
In many areas, inoculants are used every time soybeans are grown. However, the use of inoculants on rotated soybean ground is not standard in all areas, perhaps due to a perception that economic benefit is not worth the extra effort to make the application. (Read more –>Why You Should Consider a Soybean Inoculant for 2008)
Corn traits are a growing reality in North American corn production. Herbicide tolerant and insect-protected Bt hybrids have been widely used in recent years. The very important decision of hybrid selection has become more complex with decision making requiring the evaluation of genetics, traits and seed treatments in a single package.(Read more –>Value of Corn Traits)
The fuel ethanol boom in North America has been ‘lottery like’ in terms of its impact on corn producers. In Germany, energy production is also creating a major opportunity for producers but in the form of biomass production for energy and electricity generation. [Read more →]
Many producers will still plant a balanced rotation in 2008. But for some, taking advantage of attractive corn prices will mean planting corn on corn next season. For many producers, corn is becoming the go to crop given yield performance even under high stress conditions. With the hybrids we have today it is becoming easier to pencil in a winning equation with corn. [Read more →]
PRIDE SEEDS - performing everywhere you go. “Given our efforts in research, testing and identifying producer needs, Pride Seeds, a part of AgReliant Genetics, has become one of the fastest growing seed businesses in North America. Our focus as a company is completely on seed and our success is based solely on the success you have from growing our products. We appreciate and will continue to work hard as a team to earn your business every year.” Stephen Denys P.Ag Vice President Sales & Marketing - We welcome your questions and comments.
