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The field library / Thailand

Know your rice.
Understand your season.

Start with a variety. Understand its stages. Make the next fertilizer review more useful.

Thai rice / First ten profiles

Find the variety you grow.

Start with ten source-linked profiles. Compare harvest timing, growing regions and the details that matter when planning the crop.

San Pa Tong 1

สันป่าตอง 1

Published harvest timing

130–135 days

Planning focus

Keep nursery age and time in the field separate.

Chai Nat 1

ชัยนาท 1

Published harvest timing

121–130 days

Planning focus

Nitrogen response is a reason to review the split, not to increase it automatically.

Pathum Thani 1

ปทุมธานี 1

Published harvest timing

104–126 days

Planning focus

Keep the wide maturity window in your plan.

KDML105

ขาวดอกมะลิ 105

Published harvest timing

Around 25 November in the source setting

Planning focus

Plan around day length as well as crop age.

RD6

กข6

Published harvest timing

Around 21 November in the source setting

Planning focus

Start with the seasonal calendar and exact seed identity.

RD31

กข31

Published harvest timing

Wet direct seeding: 111 days; Transplanting: 118 days

Planning focus

Choose the establishment method before comparing crop ages.

RD41

กข41

Published harvest timing

105 days

Planning focus

Review nitrogen and disease risk together.

RD43

กข43

Published harvest timing

95 days

Planning focus

Fit a short crop into the whole farm calendar.

RD47

กข47

Published harvest timing

Wet direct seeding: 104–107 days; Transplanting: 112 days

Planning focus

Keep the planting window and nitrogen rate in view.

Phitsanulok 2

พิษณุโลก 2

Published harvest timing

119–121 days

Planning focus

Prepare for harvest before grain starts to shatter.

Harvest ages retain the source’s timing basis. Published yields belong to their reference conditions; they are not a forecast for your field.

Plan the season.

Read the variety first. Then connect crop stage and fertilizer timing.

Botanical illustration of rice leaves, panicles and roots

Variety profile

San Pa Tong 1

Growing areas, harvest age and the details that matter when planning this Thai glutinous rice.

Read the variety guide

One crop. A changing set of needs.

VegetativeReproductiveRipening

Growth & development

Reading the rice season

Make sense of growth stages, days after planting and the heat your crop has accumulated.

Understand the stages

Start with nutrients, not bag weight.

Nutrition & timing

Getting nitrogen timing right

Connect crop demand, previous applications and field conditions before the next split.

Explore nitrogen timing

Editorial preview. These source-linked guides explain planning principles; they are not prescriptions for an individual field. Agronomic review is still pending.

Conceptual illustration of northern Thai rice paddies

Put it into practice

Give the advice
some field context.

Your variety, sowing date, field observations and actual inputs make a local review more useful. Keep those records together in Hypha.

Book a Hypha demo