Cassava

SM972 20 Cassava (Lakan 3): Yield, Maturity and Characteristics

SM972 20 is a registered cassava variety, also sold or known as Lakan 3 or PSB Cv 12. It was registered with the National Seed Industry Council in 1997 as NSIC 1997 Cv 12. Its record notes 30.6 tonnes per hectare on average in the trials.

4 min read Updated October 23, 2026 By the anee.io agriculture team Read it all with Libre + Anee
Kamote vines on long raised ridges in San Rafael, Bulacan, the kind of farm where SM972 20 cassava is grown
Photo: Judgefloro, CC0, 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.

If you came here looking for Lakan 3 or PSB Cv 12, this is the same cassava. Its seller and farm sources add notes, listed at the end. Compare it with the others in our cassava variety finder, or see every crop variety we list. For the crop itself, read our guide: Land preparation for root crops.

  • Yield: 30.6 tonnes per hectare on average in the trials.
  • Recommended for: anywhere in the country.

Key facts about SM972 20 cassava

Key facts of SM972 20
TraitWhat the record shows
RegistrationNSIC 1997 Cv 12
Year approved1997
Also known asLakan 3, PSB Cv 12, NSIC Cv 12
Average yield30.6 t/ha
Recommended areaAnywhere in the country
Dry matter content34.6
HCN contentLow
Root flesh colorCream
Root skin colorPink

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

Its average yield of 30.6 t/ha trails the average of its group, 33.84. 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
Brown leaf spotModerately resistantTook some damage but held up
SpidermiteModerately resistantTook some damage but held up

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.

The pests and diseases that hit cassava fields most often: whitefly, anthracnose, Cercospora leaf spot, mealybug. Our pest finder and disease finder help you name what you see.

What the root is like

Its roots have cream flesh and pink skin. Dry matter is 34.6 percent. A higher dry matter cooks mealy and gives processors more flour or starch from each tonne. Its cyanide level, the HCN content, is low. A low level is safer for the table, while a high level calls for peeling, soaking and full cooking. It is recommended .

What its seller and farm sources say

  • Yield: 30.6 t/ha in registry trials.
  • Fruit: Cream flesh, pink skin, dry matter about 34.6 percent, low HCN.
  • Where: All regions, best in Southern Mindanao.
  • Uses: All purposes: food, feed.
  • Moderately resistant to brown leaf spot and spider mite.

Why farmers know it: low cyanide food and feed variety that was multiplied for San Miguel's cassava feed project in Negros Occidental. Check these against what farmers near you have seen, because the same variety can do differently from one town to the next.

Where and when to plant SM972 20 cassava

It is recommended for anywhere in the country. Pick by buyer first. Starch and feed plants pay for yield and starch content, while the table wants a sweet, low cyanide variety that boils soft. A high starch variety needs a buyer within a day of harvest, because the roots spoil fast.

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 cassava 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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Cassava varieties like this one

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

Is Lakan 3 the same as SM972 20?
Yes. Lakan 3 is another name for SM972 20, registered as NSIC 1997 Cv 12. Seed sellers use both, so ask for either one.
What is its yield?
The record shows 30.6 tonnes per hectare on average in the trials. Your own yield depends on the soil, water, fertilizer and pests on your farm.
Where does it grow best?
It is recommended for anywhere in the country. Ask your municipal agriculturist how it has done in your town.
Where can I buy seed of SM972 20?
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 SM972 20 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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