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Which harrow is suitable for weed control in organic cereals?

{Tool} Which harrow is suitable for weed control in organic cereals? Creator(s): Delanote, Lieven and Dewaele, Karel. Issuing Organisation(s): INAGRO. OK-Net Arable Practice abstract, no. 026. (2018)

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Online at: http://orgprints.org/32612

Summary

The precision tined harrow had the best impact on soil and weeds, as each tine leaves its own trace. The rotary hoe just created small holes, but broke up the soil crust. Two successive treatments doubled the efficiency against weeds.
Practical recommendations
• Weed management in organic farming requires an integrated approach, taking into account rotation, soil, available tools, prevalent weeds, etc.
• The smaller the weeds, the more sensitive they are to mechanical treatment with the harrow. The best results are achieved between the ‘sprout’ and ‘first leaf’ stage of the weeds. However, for mechanical weed management, the crop must be well established. Therefore, between the rising of the crop and the 3-leaves growth stage, mechanical control is not recommended.
• Soil conditions are crucial, especially in case of crust (e.g., after winter). An early harrowing or hoeing, when soil is ‘drying white’, is needed to break up the crust. The rotary hoe has proved to be the most effective tool for this.
• Do not be afraid of damaging your cereal crop from the 3-leaves stage onwards. Cereals are capable of recovering. Adjust speed and drive rather slowly in young crops. The rotary hoe and the precision tine harrow allow earlier treatments than the traditional tined harrow.
• If the results are not sufficient over the years, it is recommended to sow cereals with a row spacing of 30 cm. This allows the combination of hoeing and harrowing for better weed control.
• If you intend to buy a new harrow, inform yourself about the different devices available. Ask colleagues and advisors about their experiences.


EPrint Type:Practice tool
What problem does the tool address?:To achieve good yields and high grain quality, and to avoid increased weed pressure in subsequent crops, weeds must be controlled efficiently in organic cereal production. Different mechanical devices are available for weed control.
What solution does the tool offer?:The tined harrow and the rotary hoe are two commonly used mechanical tools for weed control. In recent years, the Treffler Company re-invented the concept of the harrow and introduced the precision tined harrow. Inagro tested the tined harrow, the rotary hoe and the precision tined harrow to determine the most effective device.
Country:Belgium
Type of Practice Tool:Practice abstracts
Theme:Weed management
Keywords:cereal crop, weed management
Subjects: Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry > Weed management
Research affiliation: Belgium > INAGRO, Department for Organic Crop Production (Rumbeke)
European Union > OK-Net Arable
International Organizations > International Federation of Organic Agriculture Movements IFOAM > IFOAM EU Group
FP7 Grant Agreement Number:652654
Related Links:http://farmknowledge.org/index.php/search-for-ok-tools?v=32612
Project ID:oknet
Deposited By: Basler, Andreas
ID Code:32612
Deposited On:01 Feb 2018 13:20
Last Modified:01 Feb 2018 13:20
Document Language:English
Status:Published

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