Perfect strawberries - like from another star

Inno­va­ti­ve substrates with GreenFibre® – for a sus­tainab­le cul­ti­va­ti­on of strawberries

The most com­mon inter­na­tio­nal method for com­mer­cial straw­ber­ry pro­duc­tion is soil­less cul­ti­va­ti­on in gro­wing media using gut­ter sys­tems, con­tai­ners or sub­stra­te-fil­led rid­ges. The substrates used are main­ly based on coir, peat and per­li­te. Rese­arch and deve­lo­p­ment is cur­r­ent­ly inves­ti­ga­ting how substrates can opti­mi­se straw­ber­ry yiel­ds and at the same time com­ply bet­ter with sus­taina­bi­li­ty cri­te­ria. With regard to envi­ron­ment and cli­ma­te protection,

the aim is to redu­ce water and ener­gy con­sump­ti­on as well as CO2 emis­si­ons asso­cia­ted with the pro­duc­tion, pro­ces­sing and use of substrates. Fur­ther­mo­re, the soft fruit sec­tor would like to beco­me more inde­pen­dent of cer­tain raw mate­ri­als and con­sti­tu­ents. In recent years, shor­ta­ges in the avai­la­bi­li­ty of raw mate­ri­als from over­seas, in par­ti­cu­lar coir, have high­ligh­ted the impor­t­ance of reli­able and local raw mate­ri­al sources.

The sub­stra­te inno­va­ti­on with GreenFibre®

With this back­ground, Klasmann-Deilmann has deve­lo­ped inno­va­ti­ve TS substrates with a high con­tent of its own wood fib­re pro­duct GreenFibre® which are par­ti­cu­lar­ly sui­ta­ble for straw­ber­ry cul­ti­va­ti­on in gut­ters and con­tai­ners. This new approach allo­wed to redu­ce the amount of coir, peat and per­li­te in tho­se substrates significantly.

Crop results

Exten­si­ve prac­ti­cal tests with the GreenFibre® substrates were car­ri­ed out at the Del­phy and Ber­ry­N­o­va-Gen­son rese­arch sta­ti­ons (Nether­lands) and at Pro­ef­cen­trum Hoogstra­ten (Bel­gi­um), among others. The sub­stra­te blends pro­ved their excel­lent sui­ta­bi­li­ty when mixed with up to 50 % GreenFibre®. The results con­fir­med the high effi­ci­en­cy in irri­ga­ti­on manage­ment and cul­ti­va­ti­on as well as a hig­her fruit yield. The com­ple­te test reports are avail­ab­le on request.

In con­trast to coir-based substrates, a drai­na­ge per­cen­ta­ge of 20 % is suf­fi­ci­ent for substrates with GreenFibre®, even on warm days. This value should not be excee­ded for substrates with GreenFibre®. Espe­cial­ly in regi­ons with high tem­pe­ra­tures and limi­ted water avai­la­bi­li­ty, this is an addi­tio­nal bene­fit of the­se new substrates, as less water is nee­ded during cultivation.

Rese­arch Sta­ti­on Del­phy (The Nether­lands), 2019–2020

  • Cul­ti­va­ti­on in a hea­ted greenhouse
  • Varie­ty: Els­an­ta, June bea­ring, 12 plants per line­ar metre
  • Plan­ting: 17 August 2019; cul­ti­va­ti­on end: 25 May 2020,
    crop with two har­vest periods
  • Har­vest peri­od autumn: Weeks 38 – 52
  • Har­vest peri­od spring: Weeks 15 – 23
  • Con­trol sub­stra­te: 50 % coir, 35 % white peat, 15 % perlite
  • Tri­al substrates: 20 % / 50 % / 65 % GreenFibre® with white peat

The vari­ant with 50 % GreenFibre® show­ed the hig­hest yield for the total pro­duc­tion of both har­vest peri­ods. The con­trol vari­ant, a com­mon prac­ti­se straw­ber­ry sub­stra­te, had the lowest yiel­ds. Also with regard to the dis­tri­bu­ti­on of fruit clas­ses in autumn and spring, the hig­hest yield of fruits class 1 was achie­ved in substrates with 50 % and 20 % GreenFibre®. In this tri­al, all substrates with GreenFibre® per­for­med bet­ter than the con­trol sub­stra­te. The drain EC value in the con­trol sub­stra­te was signi­fi­cant­ly hig­her than in the substrates with GreenFibre®, espe­cial­ly in autumn, and also had the lowest drain rates in %. In spring, both the drain EC values and the drain per­cen­ta­ges were clo­ser to each other in all substrates.

Rese­arch Sta­ti­on Ber­ry­N­o­va-Gen­son (Nether­land), 2019

  • Cul­ti­va­ti­on in poly­tun­nel, varie­ty Mura­no, day-neu­tral varie­ty, 6 plants per meter
  • Plan­ting 12.7.2019; end of cul­tu­re 4.10.2019, short crop, sin­gle bearing
  • Har­vest peri­od week 33 – 40
  • Con­trol sub­stra­te: 100 % coir
  • Test vari­ants: 50 % GreenFibre® with white peat

This test con­fir­med that a sub­stra­te with 50 % GreenFibre® can achie­ve yiel­ds at least as high or even slight­ly hig­her than tho­se of coir sub­stra­te. Espe­cial­ly at the begin­ning and end of the cul­ti­va­ti­on, the wee­kly yiel­ds in the sub­stra­te with GreenFibre® were higher.

Our new TS substrates with GreenFibre® for strawberries

As part of the world­wi­de tre­a­su­red TS substrates, we now offer a ran­ge of substrates espe­cial­ly for straw­ber­ry cul­ti­va­ti­on. Tailorma­de reci­pes are avail­ab­le for all sta­ges of cul­ti­va­ti­on and gro­wing sys­tems. Our new TS substrates with GreenFibre® for straw­ber­ries in gut­ter sys­tems com­bi­ne impro­ved yield per­for­mance with a more sus­tainab­le sub­stra­te concept.

At a glance: all advan­ta­ges of our new TS Substrates with GreenFibre®


Inde­pen­dent cer­ti­fi­ca­ti­on is the norm at Klasmann-Deilmann

GreenFibre® is RHP certified

The wood fib­re GreenFibre® is manu­fac­tu­red by Klasmann-Deilmann and cer­ti­fied accord­ing to the RHP qua­li­ty mark. The RHP label gua­ran­tees long-term sui­ta­bi­li­ty and con­sist­ent­ly high qua­li­ty of GreenFibre® as sub­stra­te con­sti­tu­ent for pro­fes­sio­nal hor­ti­cul­tu­re (www​.rhp​.nl).

Wood resour­ces only from respon­si­b­ly mana­ged forests

Bes­i­des relia­bi­li­ty, sus­taina­bi­li­ty is of key impor­t­ance for our gro­wing media. The wood chips used to pro­du­ce GreenFibre® are obtai­ned sole­ly from respon­si­b­ly mana­ged forests. Whenever pos­si­ble, we pre­fer raw mate­ri­als from local sources that meet sus­taina­bi­li­ty cri­te­ria and opt for PEFC- and/or FSC-cer­ti­fied wood as base for our GreenFibre®.

GreenFibre® for orga­nic production

Substrates with GreenFibre® are also ide­al for orga­nic pro­duc­tion. GreenFibre® com­plies with EU Regu­la­ti­on (EC) No. 834/2007 and Annex I to Imple­men­ting Regu­la­ti­on (EC) No. 889/2008, inspec­ted by Ecocert®.

RHP Horticulture

Our TS-Substrates with GreenFibre® – Ide­al sub­stra­te solu­ti­ons also for other soft fruit species.

Do you also grow blu­e­ber­ries, raspber­ries or other soft fruit in con­tai­ners or gut­ter sys­tems? Then we have the right sub­stra­te for you. We offer a full ran­ge of tried and tes­ted substrates spe­ci­fi­cal­ly deve­lo­ped for the pro­pa­ga­ti­on and gro­wing on of various soft fruit spe­ci­es. Plea­se do not hesi­ta­te to con­ta­ct us for fur­ther information.

Fur­ther information