Under full - LED , lily seem to grow well in general . Far - reddened light offer reward , but leafage quality remain a spot of attention . Those are the conclusion of the research carried out by Plant Lighting and Delphy Improvement Centre .
Lily is a comparatively cold crop , so with full - lead ignition , only modified heat is needed . In 2020 , it was evidence that in a day - less pre - breeding period under head , far - red light is needed to prevent finish delay . low-spirited idle intensity during the first weeks was also found to be sufficient . The motion in this study last year was whether a good lily can be grown in the greenhouse with full - lead lighting and intensive CRT screen exercise to thin heat demand . what is more , the enquiry was whether , in a nursery , where there are always some hours of daylight , a far - cerise prerequisite also apply .
Two test greenhousesIn two data-based greenhouses , several lily varieties were grown in four trait during the period September 2020 to March 2021 . In one greenhouse , lighting was done with light-emitting diode RWB , and in the other greenhouse with LED RWB + 6 μmol far - red ( RWBFr ) . sidereal day duration was 18 h , intensity 110 μmol / m²/s PAR , 24 - hour temperature 18 - 19 ° nose candy , and CO2 was drug during the day . Heat demand was limited by intensive screening and using the heating tubes only the heating system demand .
Far - red lighter offers advantages at OrientalsUnder full - lead , it appear that a good lily can broadly speaking be grown in footing of speed , offshoot weight , firmness , distance , bud developing , and vase life . For the Orientals and OT varieties , far - red offer clear advantages : high-pitched cultivation speed ( up to 12 days ! ) , inhibition of excessive distance maturation in OTs Tabledance and Zambesi , and effective vase life . Branch weightiness was generally slightly higher for OTs and Orientals without far - red , however , converted per mole of light for 90 centimeter branches , the far - red handling actually farm more branch weight . For the LA and Longiflorum sort , the welfare of far - red was less or inconclusive . While the elongation meter of the LAs was several day shorter with far - scarlet , ramification exercising weight was again reasonably lower . Whether far - red offer up sufficient benefits here is for the agriculturist to mold .
ChallengeFor successful cultivation under full - LED , the challenge still lies primarily in leaf quality . leave sometimes showed chlorosis . Both substrate , igniter spectrum , and clime control could play a role in this .
reservoir : www.kasalsenergiebron.nl .
Read the enquiry report ( in Dutch)here .
