Hyacinth bulbs commonly grow in the open ground . As a result , fertilizers may leach into the surface water . In addition , the bulbs are susceptible to soil - bear diseases and pests ( such as fungus and nematodes ) . inquiry by the Greenhouse Horticulture and Flower Bulbs Business Unit of Wageningen University & Research bear witness that the bulbs can also be grown well in plastic deep .
The Bollencoaster project is purpose at making bulb cultivation more sustainable . One of the portion is research into the use of plastic slots . These are sink in the theater of operations at a depth of 10 to 20 cm and with a width of approximately 5 centimeters . There is a dribble hose in the trench for tearing and administering nutrients . The top of the trench is closed so that diseases , pests , and undesirable urine can not penetrate . In the oceanic abyss , the medulla are planted on a substrate .
This cultivation method acting has many reward in the refinement of hyacinth . This makes targeted watering potential , and there is no leaching of piss and fertilizers . In gain , fewer crop protection agents are required . The slit allow the electric-light bulb to mature in a long rowing , which facilitates mechanical weed control . Because the bulbs do not grow in the ground , fungi , and nematodes can not regard the crop . Crop rotation is therefore not necessary ( in conventional crops , hyacinths can only get on the same soil once every six years ) . As a result , growers do not have to look for a new theater every year . And most importantly , the bulbs rise well in an inclose environment .
There are also disadvantage and points of attention . For example , the soil in the trench must have sufficient nutrition and be clean . This can be done by using new substrate during each culture around , such as coconut palm peat substrates . An option is to utilise the sand in the discipline . However , this must first be steamed and perhaps provide with biostimulants . In addition , the grower must seat in , among other things , the plastic slots and the drip system . The top of the oceanic abyss sometimes appears to open , countenance rain to enter the trench , for exemplar . In improver , it should be prevented the grunge around the trench becomes impoverished : it might therefore be wise to let something else develop , for example , smoke , between the hyacinths .
The inquiry into hyacinth take place at Agrifirm - GMN in Voorhout . In the same area , a study of lilies is being carried out ( both crops alternate in outflow and fall ) . Research is also being carry out at the WUR research location in Bleiswijk into the possibleness of also cultivating other flower electric light in this system , such as tulips , sword lily , and zantedeschia .
Bollencoaster is a four - class enquiry political program of the Horticulture & Propagation Materials top sector of the Ministry of Agriculture , Nature , and Food Quality . The implementation of this Public - Private Partnership is the responsibility of a consortium of seven partners . These are : KAVB , Agrifirm - GMN , Oerlemans Plastics , Rabobank Bollenstreek , Hoogheemraadschap Rijnland , Greenport Duin & Bollenstreek and Wageningen University & Research .
beginning : www.wur.nl
