Varieties Hybrid rye
The cereal price situation is demanding even better performing and cost-saving varieties. Only: No variety encompasses all the advantages. Therefore the crop cultivation businesses must weigh up and calculate the pros and cons.
IGC). With the falling producer prices, the costs per unit have to decrease, cost-neutral performance enhancers have priority, and resistance becomes more important as do quality characteristics. Variety selection in autumn 2016 must reflect these premises.
Which variety properties count in autumn 2016?
Tab. 1 describes exemplary a standard site with high-yield expectations, how the variety selection affects the earnings:
The first column describes the leeway which is possible within the current performance level during variety selection, expressed as the cereal growth stages (APS) of the Bundessortenamt. Here, the grain yield and protein content only differ by one grade. Greater leeway is present in the agronomical properties.
The second column assesses the relevance of this characteristic. Here, one grain yield grade represents a 4 % difference, therefore 3.6 dt/ha in this example. The risks for low-protein and fall rate stable wheat varieties are a quality markdown per decitonne in the range of 0.60 to 1.00 Euro. Winterkill refers to breaking and reseeding. Particularly resistant or lodging-resistant varieties allow saving in treatments.
The emergence frequency (third column) is estimated individually for every farm. Here it is implied that one APS leads to more protein (approx. 0.3 % on average) every third year which maintains the quality premium, unlike APS 4. Similarly, in sprouting resistant varieties, it is assumed that in the fourth year the price markdown to the fodder wheat level for lodging-resistant varieties will be saved. During winterkill, damage by breaking occurs for example every eighth year. Healthier varieties allow savings in fungicides in many years, but not in every year.
Resistance and quality are now heavy weights
Under the described assumptions, the earning potential of the variety is by far the most important characteristic of that variety. The following applies: The higher the expected yield level, then the higher the economic advantage of the yield in comparison to the other variety characteristics. The lower the price expectation, then the more important are the cost-reducing variety characteristics such as winter hardiness, lodging resistance and health. And naturally reliability of the marketing quality, because the quality markdown hurts twice as much at a low-price level.
With almost 50 €/ha profit difference, spike health and winter-hardiness are the second most important variety characteristics. Particularly with these characteristics it must be mentioned that the selection of a variety is always an individual, company decision. Because in the north of Germany the economic relevance of Fusarium susceptibility is not as high, while in the west and south it is the winterkill rating.
Added to this, no variety encompasses all the advantages; the advantage of one characteristic is often brought into perspective by the disadvantage of another.
And in the end, the flexibility of use of a variety is not evaluated in the table. One such variety with a healthy base can also be used as a wheat on wheat crop; a variety with Fusarium resistance also in maize crop rotations; a variety with the best lodging resistance also in slurry handling farms with a high lodging risk.
Hybrid rye is now even better value?
Hybrid wheat is good for stressful sites
At low prices (15 €/ha) hybrid wheat is economically interesting at a yield expectation of 75 dt/ha, and at high prices (25 dt/ha) with 90 dt/ha. However, unlike hybrid rye, the limits are not fixed. This is because the decision to use hybrid wheat also depends on an adjusted system, in which the development of the individual plants takes priority right from the start. The farms here have different preconditions with regard to accessibility, plant cultivation flair, and even the sowing technology.