Job offersmore »

Tweeting Growers

Last commentsmore »

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »

Substrate handling influences water holding capacity

Water holding capacity is greatly influenced by the size of the growing medium particles. Coarse particles create macropores which account for drainage and air porosity, while fine particles create micropores which retain water. A mixture of coarse and fine particles can be prejudicial for a substrate because the macropores will be filled by the fine particles, which reduces the air porosity of the growing medium.

A substrate with fine components is mainly used as a seed germination medium, and depending on the grower’s preferences, it can also be used to root cuttings. Therefore, this type of substrate is designed to easily fill small cells and to hold lots of water. Depending on the season of the year and the grower’s preference, a seed germination substrate may contain perlite or vermiculite. Usually, a germination substrate with perlite, such as PRO-MIX FPX, is more widely used during winter due to its lower water retention capacity, whereas a germination substrate with vermiculite, such as PRO-MIX PGX, is used during the summer since it has a higher water retention capacity. However, both PRO-MIX FPX and PRO-MIX PGX are designed to hold sufficient water and provide good aeration between watering cycles when used properly.

Publication date: 8/9/2018



Other news in this sector:

8/16/2018 Horticubes retail packs suitable for growers big and small
8/8/2018 How did oxygenation of irrigation water affect bedding plants?
8/8/2018 First RPP labelled growing media on the market
7/20/2018 Mycorrhizal fungi use in propagation
7/16/2018 Commercial growers get new wood fiber option
6/19/2018 Oboya receives several new orders in Poland
6/4/2018 Jiffy Products Sri Lanka successfully EU Organic certified
5/21/2018 UK: Grants for peatlands restoration
5/16/2018 Oasis starts offering Rootcubes retail packs
4/12/2018 US (MA): Molds on the surface of growing media
4/9/2018 RHP explanatory video about potting
4/4/2018 International Peatland Society celebrates 50th anniversary with symposium
3/20/2018 "I tested my growing media, now what?"
2/19/2018 Peat moss: A sustainable component of growing media
2/13/2018 Biochar could replace unsustainable peat moss in greenhouse industry
1/26/2018 Take a peek in Kekkilä's production facility
1/26/2018 Local raw material provides alternative to coconut products
1/18/2018 Shakti Cocos B.V. is now an independent company
1/10/2018 US (MI): Managing substrate pH of soilless substrates
12/22/2017 Video: Phytosanitary clean peat for bulb packaging


Leave a comment: (max. 500 characters)

  1. All comments which are not related to the article contents will be removed.
  2. All comments with non-related commercial content, will be removed.
  3. All comments with offensive language, will be removed.

  Display email address

  new code