JUMBO is a hybrid with the same maturity length as Royalty. The plants is resistant to MDMV; has a strong, hardened physique. Sectioned sowing can be done until the end of June. Outstanding yield potential and reliability!

JUMBO’s threshed product is nice-looking, sweet and delicious; its quality is identical in every respect to the reference variety.

JUMBO is an extremely high-yielding virus-resistant variety of crop sections harvested in August, September and October.

NOTATION:

1 = unacceptable, 2 = weak, 3 = acceptable, 4 = good, 5 = excellent.

The features provided are somewhat subject to change depending on the particular production and weather conditions.

GROWING TECHNOLOGY CORNER POINTS

for the large-scale production of JUMBO

TOPCORN Kft., 2021

• ISOLATION (from non-supersweet sweet corn and maize)
• Distance: at least 150m or
• Time: at least 10-day flowering time difference - timing of sowing, or

       - variety pairing (Dessert R78 + Jumbo)

• SEEDBED PREPARATION
• At the time of sowing the seed bed should be - settled (natural capillarity)

    - with an even surface

• In case of dry soil conditions irrigate (20-30 mm/m²) 4-8 days before sowing to build water reserves.
• Immediately prior to sowing only loosen the soil till sowing depth (3-4 cm).

• TIMING OF SOWING

• Optimum sowing period: second half of April onward, until early July, when the average soil temperature at sowing depth reaches 12 °C
• Wait with sowing, if according to forecasts a cooling is expected in 24-48 hours.

• SOWING MACHINE ADJUSTMENT

• Seed discs with smaller holes (3-4 mm) are required ('sunflower' settings)
• Reduce driving speed

(» better soil tracking » more uniform sowing depth » rapid and uniform emergence »

 » consistent crop = bigger yields + less deduction by processors!).

• Sowing density: 58-65 thousand germ/ha

• SOWING DEPTH

The optimum sowing depth is determined by taking into account the following factors:

• in the specific area the sowing machine can ensure a uniform drilling depth
• the seed should have contact with a settled wet layer of soil

(or: leavening irrigation / with linear only! / within 24-48 hours!)

• the seed should not go deeper than 4 cm

• CHEMICAL WEED CONTROL

• Base treatment at the beginning of emergence (it’s safe enough then): Gardoprim Plus Gold
• Post-emergent treatment: Laudis (till 4-5 leafs it’s safe to use it on corn)
• Other post-treatments are considered high-risk (yield and quality reduction).

• CARE

The initial rapid and steady development should be helped by all means:

• starter fertilization (P-dominant NPK), as base- or possibly foliage fertilizer
• regular irrigation started in time and as necessary 

(Initially with a lower water dose /10-15 mm/, but more often)

• in the root switching period (3-5 leafs) in case of dry weather, irrigation is a must!
• use cultivator with shallow settings (after irrigation or rain)