Job offersmore »
- Senior growers/agronomists - China
- Account Manager Foodservice en Groothandel DACH - Netherlands
- Business Development Manager - California
- Head of Sales North America - Sacramento (CA) USA
- Import Assistant and Operations Assistant - Netherlands
- Farms Director UK - South East
- Agronomist to work abroad
- Export salesperson GERMANY - Barcelona, Spain
- Account Manager Zachtfruit Scandinavië en Duitsland - Netherlands
- International Editor
Last commentsmore »
- India: Government gives 50% subsidy on a poly house (1175)
- First record of the fungus Blumeriella kerriae in the UK (1)
- Women's Day: "Russian market is growing up" (38)
- "25% annual production growth Mexican phalaenopsis" (17)
- Grower tickled pink with Pink Kisses from Portugal (3)
- "I tested my growing media, now what?" (11)
- Will sea freight be an alternative to Latin American air freight? (175)
- Sneak peek California Spring Trials 2018 (3)
- Milestones, lessons from California’s historic drought (34)
- Schroll is developing the hydrangea production in Portugal (2)
Top 5 - yesterday
Top 5 - last week
Top 5 - last month
Exchange ratesmore »
The function of limestone in growing mediaLimestone is commonly used in the manufacturing of growing media. It is mostly added to offset the acidity of components such as peat moss and pine bark, and to bring a growing medium's pH up into the 5.5-6.5 range, which is ideal for most crops.
Greenhouse growers know that in order to achieve optimum nutrient availability for plant growth, the growing medium's pH for most crops should be in the 5.5-6.5 pH range. The standard base components in most soilless media, peat moss and composted pine bark, have a pH in the range of 3.5-5.0.
This is too low for most crops and requires the use of limestone to bring the growing medium's pH up into the ideal range.
The quantity and choice of limestone used to increase the growing medium's pH is a function of several factors, including:
- the growing medium's components;
- the type of limestone;
- the particle size of the limestone used.
Read more at PRO-MIX
Publication date: 11/16/2016
Other news in this sector:
Leave a comment: (max. 500 characters)
- All comments which are not related to the article contents will be removed.
- All comments with non-related commercial content, will be removed.
- All comments with offensive language, will be removed.