Corn

NK 6624 Corn: Yield, Maturity and Characteristics

NK 6624 corn is a yellow hybrid corn variety. It was registered with the National Seed Industry Council in 2006 as NSIC 2006 Cn 179. Syngenta bred it. It takes 104 to 106 days from planting to the harvest of dry grain, with 7.08 tonnes per hectare on average in the trials.

5 min read Updated October 23, 2026 By the anee.io agriculture team Read it all with Libre + Anee
A cornfield on a hillside in Pilar, Capiz, its leaves drying close to harvest, the kind of farm where NK 6624 corn is grown
Photo: Rochelle Vergara, CC BY SA 4.0, via Wikimedia Commons

The average and top yields in tonnes per hectare come from the trials each variety went through to be registered with the NSIC, and from what the seed companies say about their own seed.

What farmers harvest today can be different. Newer harvest records, the season, the place, the soil, the water and the care all move these numbers over time.

So use them to compare varieties, not as a promise for your field. Ask your seller or your agriculturist how the variety did on farms near you in the last few seasons.

Compare it with the others in our corn variety finder, or see every crop variety we list. For the crop itself, read our guide: Pagtatanim ng mais, step by step.

  • Days to harvest: 104 to 106 days from planting to the harvest of dry grain.
  • Yield: 7.08 tonnes per hectare on average in the trials.
  • Plant height: about 240.5 cm.
  • Recommended for: Mindanao, in the dry season.
  • Type: Yellow hybrid.

Key facts about NK 6624 corn

Key facts of NK 6624
TraitWhat the record shows
RegistrationNSIC 2006 Cn 179
Year approved2006
Breeder or ownerSyngenta
TypeYellow hybrid
Days to harvest104 to 106 days
Average yield7.08 t/ha
Plant height240.5 cm
Recommended areaMindanao
SeasonThe dry season
Ear length (cm)16.1
Shelling recovery (percent)78 percent
Lodging resistanceResistant

How long does it take, and how much does it yield?

NK 6624 corn takes 104 to 106 days from planting to the harvest of dry grain. That is about the average of the 215 yellow hybrid corn varieties with a day count, 103.6 days. A shorter crop frees the field sooner and dodges more of the weather, while a longer one often fills more.

Its average yield of 7.08 t/ha matches the average of its group, 7.17. One tonne of shelled corn fills about 20 sacks of 50 kilograms. Trial yields come from well managed plots, so your own will depend on water, fertilizer, pests and timing.

Once you know the day count, anee.io dates every task from each lot's own planting day, with the growth stages and weather beside it.

Is it resistant to pests and diseases?

Reactions in trials, rated under natural field conditions
Pest or diseaseRatingWhat it means
Corn borerResistantHeld up well
RustModerately resistantTook some damage but held up
Stalk rotModerately resistantTook some damage but held up
Corn earwormResistantHeld up well

It showed no weak spot in the ratings on record. Still, a resistant variety can break down when a new strain or pest population comes, so keep scouting. Read up on Asian corn borer, Corn rust, Corn stalk rot, Corn earworm.

The pests and diseases that hit corn fields most often: Asian corn borer, banded leaf and sheath blight, Corn downy mildew, Corn ear rot, Corn planthopper. Our pest finder and disease finder help you name what you see.

What the grain is like

Its ears grew about 16.1 cm long in the trials. The shelling recovery was 78 percent, the share of the ear weight that comes off as grain. A higher share means more grain from every sack of ears. Against lodging it rated resistant, so it stood up well when wind and rain pushed the plants.

Where and when to plant NK 6624 corn

It is recommended for Mindanao in the dry season. Start with the color your buyer pays for: yellow corn goes to feed mills, while white and glutinous corn go to the table. Next, pick between a hybrid, which yields more but needs new seed every season, and an open pollinated variety, whose seed you can save. Then match the island group in its recommendation, because trials in Luzon and Mindanao give different winners. Before planting, get the field ready with our guide: Land preparation for corn.

Before you buy seed

  • Buy sealed packs or tagged sacks from an accredited dealer, and check the packing date and germination rate.
  • Ask your municipal agriculturist or nearby farmers how it did in your area last season.
  • Try it on a small area first, beside the variety you usually plant, before you switch the whole farm.
  • Write down the planting day, inputs and harvest, so you can compare varieties on your own ground. anee.io keeps these records for you.
Plan your next corn season

Set the planting day of each lot and anee.io dates every task to harvest, with the weather beside it. Free on the Libre plan.

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Corn varieties like this one

These are the closest matches among the corn varieties we list. So if seed of this one is hard to find, compare these first.

  • K 509: 103 to 107 days, 8.52 t/ha, 2019
  • PR 8531: 103 to 107 days, 9.13 t/ha, 2018
  • X8B649: 103 to 107 days, 7.76 t/ha, 2012
  • S 6259: 103 to 107 days, 8.08 t/ha, 2011
How long does it take to harvest?
It takes 104 to 106 days from planting to the harvest of dry grain. Then the weather and your care decide the exact day.
What is its yield?
The record shows 7.08 tonnes per hectare on average in the trials. Your own yield depends on the soil, water, fertilizer and pests on your farm.
Can I save its seed?
No. It is a hybrid, so seed saved from it does not grow true and yields less. Buy new seed each season.
Where does it grow best?
It is recommended for Mindanao in the dry season. Ask your municipal agriculturist how it has done in your town.
Where can I buy seed of NK 6624?
Ask an accredited seed dealer in your province, the seller named on this page or your municipal agriculturist. Look for the certified seed tag or a sealed pack before you pay.

See how NK 6624 will do on your farm

With Libre + Anee, see its full record: how it yields, its strengths and weaknesses against pests, diseases and the weather, and whether it fits your farm, your season and your soil.

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