Multiple sensors and app shed more light on slab root environment

Multiple sensors and app shed more light on slab root environment

Snack tomato nursery Vitensa of Vierpolders, the Netherlands, uses a monitoring system with multiple wireless slab sensors in two of its greenhouse sections in
“We also need to continuously improve our efficiency through automation”

“We also need to continuously improve our efficiency through automation”

The Gartneriet PKM nursery was founded by Poul and Marie Madsen north of Odense, Denmark, in 1948. Since then, their son Kristian and their
Education, business and research meet in challenging Dutch project

Education, business and research meet in challenging Dutch project

The World Horti Center was officially opened by Queen Máxima of the Netherlands in March 2018, although the building in the Dutch town of
“It’s all about the right balance between yield and fruit weight”

“It’s all about the right balance between yield and fruit weight”

Grow light is gaining ground among high-wire cucumber growers. Reijm & Zn in Berkel en Rodenrijs in the west of the Netherlands are among
Double screen plays key role in quest for uniform climate

Double screen plays key role in quest for uniform climate

Don’t throw away your old shoes before you get new ones – that’s an adage the Dutch sweet pepper grower Stephan Persoon firmly believes
‘Focus is on looking for efficiencies and further increasing our yields’

‘Focus is on looking for efficiencies and further increasing our yields’

New Zealand Gourmet was founded in 1985. It started off growing and exporting capsicums (bell peppers) to Japan, and blueberries and other crops such
In the past the use of rootstocks represented an important step in the fight against soil-borne diseases. But rootstocks offer many more possibilities: Improved vigour, setting, flower and fruit quality.

Rootstocks: an extra instrument to achieve production goals

In the past the use of rootstocks represented an important step in the fight against soil-borne diseases. But rootstocks offer many more possibilities: Improved
Joost van der Voort (left) and Nadir Laaguili measure the oxygen concentration at the dripper. The system guarantees a level of 10 mg per litre.

Water treatment system maintains optimum oxygen supply

Sufficient oxygen in the root environment is a must for a strong, healthy crop. More oxygen makes the crop stronger and boosts production. That’s
John Cappalonga: “We have invested heavily in producing high quality at low costs, including through a sizable expansion.”

“I have always been a fan of new ideas and new approaches”

Gee Vee Enterprises was founded in Harlow, UK, in 1997 by husband-and-wife team Gaetano and Vincenzina Cappalonga. The site is based in the UK’s
nematodes

“It works, but you need discipline to succeed”

Thrips are one of the biggest threats chrysanthemum growers face. But this hasn’t put off River Flowers in the central Dutch town of Zaltbommel:
Paul and Marcel van den Broek: “The more even climate plus the longer screening can result in 10 per cent energy savings per kilo of product.”

“I get goose bumps from such evenly coloured tomatoes”

The air above an energy screen is much drier than that below it. Currently around 20 companies in The Netherlands are making use of
Grower Frans Kortenhorst: “With this film, we cut our watering by 25% and I got rid of Sciarid fly in one fell swoop.”

“Film over the top of the pot does nothing but good”

Dutch Rhododendron grower Frans Kortenhorst was looking for a way to get rid of weeds and moss in his pots for good. He cut
Herman de Vreede: “We want to supply large volumes of orchids of a uniform quality in a sustainable way.”

Right light spectrum on bottom layer with half the energy

The LED lamps in the light fittings underneath the top growing layer shine brightly on the plants in the cultivation greenhouse at phalaenopsis growers
Meiny Prins. CEO Priva at World Horti Center

Horticulture in 2050: lots more technology, but fewer entrepreneurs

If we were to make an analysis of the horticulture industry thirty years from now, we would see that horticulture businesses have morphed into
HortiContact Tour 2018 visits Lans Tomaten

HortiContact Tour offers unique peek behind the scenes at Dutch top-class grower...

On Tuesday, 20 February a group of interested parties from all over the globe participated in a tour of various greenhouse horticulture enterprises in
Dehumidification trial at van Koppen nursery Dehumidifier boosts yields, cuts disease pressure and saves energy

Dehumidifier boosts yields, cuts disease pressure and saves energy

A giant dehumidifier in cherry tomato grower Robert van Koppen’s greenhouse in Kwintsheul (Westland, the Netherlands) keeps the RH below the critical value of
Grower Rob Olsthoorn of OK Plant deliberately opted for a triple screen for his new greenhouse so as to make it as closed an environment as possible.

OK Plant opts for triple screen to boost quality even further

Next Generation Growing has played a major role in the choices Dutch orchid grower Rob Olsthoorn of OK Plant is making for the new
Alstroemeria can get off to a good start with higher light levels than are generally used at present.

Hybrid lighting ramps up alstroemeria yields

Hoogenboom Alstroemeria in Nieuwe Wetering in the Netherlands expanded its grow light system last year. In one section of the greenhouse they have installed
Limiting light emissions called for creative solution

Combining two vertical fans makes for more even climate

Assimilation lights give off a lot of heat which stays at the top of the greenhouse when you would rather have it down near
Supplementary feeding of predatory mites with a pollen preparation has outgrown the trial phase. A large number of growers are using this method.

‘Before the problem starts, build up a vigorous predator population’

Supplementary feeding of predatory mites with a pollen preparation has outgrown the trial phase. A large number of growers is successfully using this method.