Plants evaporate considerably less in winter than in summer, therefore the need for water is lower. Without adjustment of the substrate, there will be an increased risk of root problems. The choice for a more airy substrate in winter is therefore crucial, especially with short term cultures during which growing-power is important, the knowledge centre for substrates RHP advises.
Many factors in the root environment influence the functioning and growth of roots. The availability of oxygen and water, the temperature, the penetration resistance, pH and for example EC play a role. Less evaporation of water increases the risk of a lack of oxygen in a substrate. And in this way root problems in the culture increase. To avoid these problems, the knowledge centre for substrates RHP advises to use a more airy substrate in winter than in summer.
Another reason to choose for a more airy substrate in winter, is the difference in uptake of nutrients in summer and in winter. This already differs per crop, but also per season. Crops usually take up more nutrients and less water in winter than in summer. To realise an optimal root environment for a certain culture, substrate type, watering and composition of the nutrient solution have to be adjusted to each other.
RHP certified substrates guarantee an optimal start of the culture. The RHP quality mark guarantees that the substrate meets the right quality requirements for water and air content, pH and for example EC. It also guarantees that the substrate is pure and clean and that it can be used without risks for the culture. The RHP quality mark guarantees the quality of growing media in the chain, from raw materials production until processing and delivery at the company of the user. Since1963 RHP has been the European knowledge centre for substrates (growing media).
For more information:
RHP
Galgeweg 38
2691 MG 's-Gravenzande
The Netherlands
T +31 (0)174 62 03 60
F +31 (0)174 64 04 13
E info@rhp.nl
www.rhp.nl






Announcements
Job Offers
- Retail Key Account Manager
- Sales Representative Southeastern US
- Bedding and Perennials Sales Manager Europe
- Horticultural Technician
- Agronomist
- Head Grower Strawberries, Norway
- Tissue Culture Laboratory Scientist
- Manager Operations & Logistics
- Vegetable Advisor (Permanent)
- Horticultural Commercial Director
"Tweeting Growers"
Top 5 - yesterday
- 10% increase of tomato production in the new Looije greenhouses
- AU: Provenance Propagation construction close to completion
- Busy days at GreenTech Americas 2023 in Mexico
- Indoor growers fight pests and diseases with LED lighting
- "If you don’t focus on the plant, you cannot develop the tech to be successful”
Top 5 - last week
- 10% increase of tomato production in the new Looije greenhouses
- How growers boost crop yields with greenhouse film EVO AC®
- Stronger plants & higher production with autonomous growing in Mexico
- AU: Provenance Propagation construction close to completion
- Thanks to air-conditioned greenhouses, Emirati producers can grow tomatoes during 45 °C summer
Top 5 - last month
- Japanese Berry Pop fresh strawberry seeds now available for global markets
- 10% increase of tomato production in the new Looije greenhouses
- Kuwait: Aeroponic greenhouse to continue country's effort to cut down import
- A greenhouse full of cherry blossoms in Hungary
- Combining aquaponics and hydroponics in a 2 hectare Bahrain facility
Receive the daily newsletter in your email for free | Click here
Other news in this sector:
- 2023-03-23 Canadian branch for Manisha Exports
- 2023-03-22 Grower starts increasingly using stable wood fiber substrate in longer cultivation
- 2023-03-22 UK: New microbial inoculant delivers tangible benefits in sustainable growing media mixes
- 2023-03-21 "It's essential to give growers peace of mind at every step of the process"
- 2023-03-16 HydraFiber receives UL Solutions certification
- 2023-03-15 Pelemix acquires Even-Ari Green
- 2023-03-14 Can stone wool be recycled?
- 2023-03-09 "An all-purpose growing media that addresses most growing needs"
- 2023-03-01 Start of project that will substantiate 2030 goals for sustainable potting soil and substrates
- 2023-02-21 “Our grow bags offer the perfect mix of convenience and quality”
- 2023-02-15 Sustainable growing substrate made from waste product
- 2023-02-10 Growing media to control (plant) resilience
- 2023-02-07 “The coco-substrate has to be adapted to a specific climate”
- 2023-01-23 “People tend to choose their coir pith based on EC, sand content and expansion volume”
- 2023-01-19 “Black growbags could benefit vegetable crops as well”
- 2023-01-05 Navigating through substrate shortages
- 2022-12-21 Jiffy coir pellets for Sri Lankan vertical farm
- 2022-12-19 New processing facility for Sri Lanka coir producer
- 2022-12-06 Towards peat-free potting soil and substrate
- 2022-11-24 Agriculture resource dive: peat