This Update No 3 contains updates on crop growth and agronomic information.
A video has been put together to help you navigate around the Crop Report web app
Other updates include
There are specific sections in the Crop Report update and reference guides to grassland weed control and also for the management of forage crops. These include:
The Teagasc Team have been working hard making short videos addressing technical issues in the field at the moment.
All of these videos can be accessed on the Teagasc Crops Youtube channel
The Crop Report Update No 4 is due April 22
Growth is evident in winter barley with most crops on or approaching growth stage 30 but some advanced crops are at GS 31. Growth regulation will be the priority for crops with a lodging risk in the coming days. An increase in temperature and consequently growth will help to increase the effectiveness of growth regulators but be aware of large day night temperature fluctuations. Disease levels are low and a two spray program will suffice for most crops starting at stem extension.
Winter wheat crops are now starting to move along and most October sown crops are at the start of stem extension. Disease levels are reported so far as relatively low although septoria is evident in most crops. All crops have received their first application of fertiliser comprising of N, P & K, and while most have received a herbicide, the remainder will receive a herbicide in the coming days.
Oats are at stem extension GS30 with little or no disease reported so far. Application of fertiliser and the start of plant growth regulation are the most pressing actions for farmer in the coming weeks. Crops are expected to grow strongly in the coming days with the warm weather which may increase disease pressure.
Most crops are now starting to flower and should receive their final application of nitrogen as soon as possible. There have been very few reports of pollen beetle in crops this year.
The majority of spring beans are planted by now and indications from the seed trade suggests that the area has increased from 2019. The first crops will emerge in the next few days. Once crops emerge, monitor crops for leaf-notching (by Pea & Bean weevil) and if seen across the crop, apply a suitable insecticide.
The vast majority of spring cereals are sown in the southern half of the country but some spring barley remains to be planted in the north east and Donegal. The spring cereal area has increased over 2019 particularly barley and wheat. In general seed bed quality has been excellent and the first sown crops in this dry spell have emerged in recent days. Leather jackets are visible in many fields but good seedbeds and rolling will help alleviate some of the damage.
Planting of maincrop is well underway in most areas and field conditions are ideal in most parts of the country at the moment. The dry weather over the last two weeks has dried ground even at depth so planting is progressing well with little time needed at this stage to let ploughed ground dry out.
Spring rape may be an option for growers as a relatively low cost break crop option. It is important to complete a crop budget before planting as profitability has been an issue with spring oilseed rape in the past. Where seed for other spring crops, particularly spring barley is scarce, then spring oilseed rape can be useful and will provide a break crop for winter wheat or barley. However like all break crops the margins should be averaged over two years to take into account the extra yield in the following cereal crop.
As soil temperatures increase planting of maize and fodder beet will commence. Sowing of maize under plastic will start from now on in sheltered sites while sowing of crop in the open will be sown after mid April. Farmers growing maize or fodder beet should ensure that they have an Contract Forage Agreement in place with the end user before sowing takes place.
The loss of key herbicides in our main tillage crops has been compounded by the over-reliance on the few existing herbicides, which is causing the rapid evolution of herbicide resistance in a range of grass and broadleaf weeds.
In Ireland, resistant-weeds, especially resistant-grass weeds are more widespread than we would think. For example, herbicide resistance testing of wild oat samples collected across main tillage areas prior to 2019-harvest, suggest that 25%of fields. where wild oats were found pre-harvest, had some herbicide resistant plants within their wild oat populations’ . In addition, suspected resistance in sterile brome to ALS-mesosulfuron, and high likelihood of ACCase/ALS resistance in black-grass threatens Irish tillage farming. With anticipated ban on glyphosate in 2022 further aggravates weed challenges, adversely impacting entire agri-food sector. Thus, there is a need to re-think and re-evaluate growers’ herbicide management strategies.
The Teagasc-led ‘Enable Conservation Tillage (ECT)’ has launched an important online survey (accessed via https://teagasc.limequery.com/496775?lang=en) to assess growers’ awareness of herbicide-resistant weeds as well as adoption of resistance management strategies.
The survey will answer the following questions:
The outcome will increase researchers/advisors understanding of growers’ concerns about resistance problems, and also develop tailor-made weed management programme and knowledge transfer activities.
Please feel free to forward on the survey details to any farmers who would be interested in completing the survey.