Tea Fact Sheet

Better Nutrition. Stronger Bushes. Higher Yields. Better Quality.

AgriOne provides high quality fertilizers manufactured to international standards to help tea growers achieve sustainable yields and superior quality.

Key Benefits

Improves Bush Health

Increases Green Leaf Yield

Enhances Tea Quality

Improves Soil Fertility

Better Returns for Growers

Climate Requirements

  • Temperature: 18–30°C
  • Rainfall: 2,000–2,500 mm/year
  • Well distributed rainfall
  • Relative humidity: over 70%
  • Protection from strong winds

Soil Requirements

  • Deep, well drained, acidic soils
  • Soil pH: 4.5–5.5 (ideal 4.8–5.2)
  • High organic matter content
  • Good soil structure and moisture holding capacity

Planting

  • Use recommended high yielding tea clones
  • Plant at the beginning of the rainy season
  • Recommended spacing: 1.2m x 0.75m
  • Maintain shade according to elevation

Pruning

  • Light pruning: every 18–24 months
  • Deep pruning: every 7–10 years
  • Maintain an even plucking table (50–60cm from ground)

AgriOne fertilizer details for mature bushes

Product
Formula
Rate
Description
Frequency
U-709
28:4.5:14
125kg/Ac
Recommended for mature tea plantations. Apply every 3 months.
Every 2 weeks
U-834
24:3.6:12:3.6
125kg/Ac
New into mature. Apply every 3 months.
Every 2 weeks
T-1240
13:03:08
200kg/Ac
Apply every 3 months.
Every 3 months
UT-1625
25:04:13:2
150kg/Ac
Best for low country wet zone high yielding plantation.
Every 3 months

AgriOne fertilizer details for nursery (after 3 months)

Stage
Product
Rate of Application
Frequency
Nursery (after 3 months)
T-65
35g diluted in 5L water for 120 plants
Every 2 weeks
Nursery (after 6 months)
T-65
70g diluted in 5L water for 120 plants
Every 2 weeks
After planting, 1st year
T-200
15g/21g per plant (100kg per ac)
Every 3 months
After planting, 2nd year
T-200
21g/32g per plant (150kg per ac)
Every 3 months
3rd year until 1st pruning
T-750
175kg per Ac
Every 3 months

Soil pH Management

Tea grows best in acidic soils. If soil pH is below 4.3, apply Dolomite to correct.

Soil pH
Dolomite (kg/ha)
3.9 and below
20
3.9–4.3
16
4.2–4.5
12
4.5–5.5
8

Apply during dry periods. Work into the soil during land preparation or around bushes.

Foliar Nutrition (Recommended)

Use AgriOne SUPER TEA Foliar Mix, 650g to 16L of water for better health, lush growth and yield.

  • Apply 20cm above the bush canopy.
  • Cover both upper and lower leaf surfaces.
  • Use in the morning or late evening.

Compatible with most agrochemicals. Available in VP mixtures and ST mixtures.

Seasonal Advisory

During dry spells or El Niño periods, do not apply fertilizer to dry soil. Wait for moist, workable soil so nutrients reach the roots instead of scorching them.

While soil application is on hold, keep the bush fed with AgriOne Super Tea Foliar Mix, and return to the normal three-month rounds once the rains are steady.

Major Pests in Sri Lanka

Tea Tortrix

Tea Tortrix

Homona coffearia
Defoliates leaves and reduces yield.

Tea Shot Hole Borer

Tea Shot Hole Borer

Xyleborus fornicatus
Bores into shoots and causes damage.

Tea Mosquito Bug

Tea Mosquito Bug

Helopeltis antonii
Sucking pest; causes hoppers and leaf spots.

Red Spider Mite

Red Spider Mite

Tetranychus urticae
Causes bronzing of leaves and webbing.

Purple Mite

Purple Mite

Calacarus carinatus
Causes blistering and leaf distortion.

Branch Canker (pest)

Branch Canker

Lasiodiplodia theobromae
Causes cankers on branches.

Major Diseases in Sri Lanka

Blister Blight

Blister Blight

Exobasidium vexans
Causes blisters on leaves.

Gray Blight

Gray Blight

Pestalotiopsis theae
Causes gray lesions on leaves.

Branch Canker (disease)

Branch Canker

Lasiodiplodia theobromae
Causes cankers on branches.

Black Rot

Black Rot

Corticium Koleroga
Causes black streaks on leaves.

Horse Hair Blight

Horse Hair Blight

Marssonina spp.
Causes hair like streaks on leaves.

Red Rust Algae

Red Rust Algae

Cephaleuros virescens
Causes red rust appearance.

Root Disease

Root Disease (Brown Root Rot)

Phytophthora nicotianae
Affects roots under waterlogged conditions.

The products in this program

T-200
T-200
T-750
T-750
U-709
U-709
U-834
U-834
T-65
T-65
Tea Foliar Mix
Tea Foliar Mix
AgriOne T-1240 (16:03:08)
T-1240
AgriOne UT-1625 (25:04:13:1.6)
UT-1625

Success Stories

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