Rijk Zwaan in red peppers – 35-154 RZ! - Terralink Horticulture
Rijk Zwaan in red peppers – 35-154 RZ! - Terralink Horticulture
Rijk Zwaan in red peppers – 35-154 RZ! - Terralink Horticulture
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H a n s v a n G e l l e c u m , h e a d g r o w e r a t<br />
G r e a t L a k e s G r e e n h o u s e s i n L e a m i n g t o n ,<br />
O n t a r i o , C a n a d a :<br />
“Cucumber Verdon <strong>RZ</strong><br />
comb<strong>in</strong>es resistance<br />
and strength”<br />
On Tuesday 3 August cucumber variety Verdon <strong>RZ</strong> is just 5 days away from its first harvest <strong>in</strong> this cultivation<br />
period. Grower Hans van Gellecum and assistant grower Matt Wiper plant Verdon from Christmas till the end<br />
of September. “A powerful variety with nice medium sized stem cucumbers. And very important: Verdon helps<br />
us keep the nursery virus free.”<br />
Not just any variety enters Great Lakes<br />
greenhouses <strong>in</strong> Leam<strong>in</strong>gton. It has to<br />
fit the <strong>in</strong>tensive methods of cultivation.<br />
Hans van Gellecum: “Our nursery<br />
consists of 5 compartments, 4 ha a<br />
piece. every compartment provides<br />
space for 4,5 cultivation periods a year.<br />
This means that every 2,5 <strong>–</strong> 3 weeks<br />
new plants arrive at the nursery. Yes,<br />
the risk of diseases is high. That is why<br />
we choose high resistance varieties like<br />
Verdon (high resistance to powdery<br />
mildew and strong aga<strong>in</strong>st virus).”<br />
Medium size<br />
“Verdon is a generative cucumber.<br />
However, the plant is capable of<br />
produc<strong>in</strong>g enough crop to last through<br />
the summer. It produces well. Maybe<br />
less than a non-resistant variety, but we<br />
take that for granted. With Verdon <strong>in</strong><br />
the mix, we get 160-170 cucumbers per<br />
year. I am very pleased with the size<br />
and shape. The last 1-2 days before<br />
harvest<strong>in</strong>g they fill up quite nicely.<br />
Verdon gives a better colour and longer<br />
shaped stem cucumber than for<br />
example Addison <strong>RZ</strong>. We achieve our<br />
target of 85 % mediums.”<br />
Matt Wiper<br />
Hans van Gellecum and Gus Mastronardi<br />
High temperature<br />
“The outside temperature had already<br />
reached 26º Celsius when we started<br />
today. Dur<strong>in</strong>g these warm periods we<br />
tend to give the crop also 2-3 water<strong>in</strong>g<br />
rounds <strong>in</strong> the even<strong>in</strong>g. About 100 cc<br />
per turn. extra water means lower<br />
eC-values. Normally, the drip has an<br />
eC of 2,5 (-0,5), but now the eC<br />
measures 2 (-0,5). Pre-midnight<br />
temperatures? Not with Verdon. It does<br />
not need it. Actually, you should be<br />
careful with cold nights. Verdon needs<br />
its temperatures, otherwise the fruit<br />
load will get too high.” <br />
Verdon <strong>RZ</strong><br />
Hans van Gellecum<br />
Head g rowe r at gr eat lak e s<br />
g r e e n Houses <strong>in</strong> leam <strong>in</strong>gton,<br />
ontar io, Canada:<br />
Area: 20 ha <strong>in</strong> total, 4 ha per compartment<br />
Sow<strong>in</strong>g date: 3 July 2010<br />
Plant<strong>in</strong>g date: 21 July 2010<br />
Plant<strong>in</strong>g distance: 1,45 plants per m 2<br />
Grow<strong>in</strong>g medium: Grodan Vital<br />
Yield till week 31: 105 pieces<br />
O C T O b e R 2 0 1 0 3