Basal application of fertilizer – Fertilize around late February before root movement.

If basal application of fertilizer is late, risk of defects and epinasty is high since fertilizer response will appear late.

Since poorly decomposed compost can decay and decimate the roots, it must not be fertilized.

Use of good organic matter improves soil physics and promotes microbial activity.

If the soil is acidic, improve it to the proper acidity with DOL LIME fertilization.

Standard fertilization amount must be used and over fertilization must be avoided.

Since there are many instances in which old soil is short of microelements due to repeated cultivation, it must be fertilized.

When fertilizer is mixed well with soil at a depth of 20cm, fertilizer response will be about three times stronger.

⇒ Soil application with CERES (4-2-1+70% organic matter) 1500KG/1ha

⇒ Soil application with ONE PRO 707 600KG/1ha 

⇒ Soil application with NUTRI POWER 100KG/1ha

Additional Fertilizer – Supplies nutrients needed for new sprouts and fruits to grow and helps in preventing biennial bearing.

If the application period is late or too much nitrogen is given, coloring will be delayed, and occurrence of peel puffing will increase.

Determination must be made according to tree vigor. (It must be given to a tree with lot of flowers, or weak tree vigor, and the given amount must be reduced or omitted for a tree with strong tree vigor due to small number of flowers.)

At this time, additional fertilizer must contain calcium to improve the disease resistance and hardness of fruits.

⇒ Soil application with NK CALMA 300KG/1ha from late May to early June.

⇒ Soil application with NK CALMA 200KG/1ha from late July to early August.

 

Thanksgiving Fertilizer - boosts post-harvest tree vigor recovery and winter cold resistance.

It is essential for flower bud differentiation and spring sprout growth in the following Spring.

⇒ Soil application with NK CALMA 200KG/1ha immediately after harvest from late November (Fertilizer absorption is good when temperature does not drop below 12℃).

Various physiological disorders and problems in cultivation that occur during citrus cultivation.

 

1. Tree power is weak, but flowers bloom a lot - Flowers bloom a lot to meet the TR rate because the roots are weak.

⇒ Irrigation with THE ROOTS 20L/1ha. 

 

2. Number of flowers decreases, and number of leaves increases- This is due to excessive nitrogen content in the floral initiation stage, and dry soil management and phosphorus, potassium, calcium, and boron fertilization is needed.

⇒ Irrigation with TOP PLANT PKCAB 50KG/1ha and foliar spraying with BALANCE PRO 500x

⇒ High gibberellin activity in floral initiation stage reduces the number of flowers - hormonal balance is needed.

Foliar spraying with SPAIK 500x-1,000x in the floral initiation stage.

 

3. There are many falling fruits – This occurs due to severe competition for nutrients between branches and roots, etc. – Supply additional nutrients

⇒ Soil application with NK CALMA 300 kg / 1 ha.

⇒ Photosynthesis amount is deficient and night temperature is high. – Strong tolerance to environmental factors is required

Foliar spraying with SEAWEEDF 500x.

 

4. Pollination is not occurring, and fruit enlargement is difficult. There is much fruit cracking, hypotonicity is weak, and there is a lot of peel puffing.

⇒ The size and quality of fruits are determined by the number and size of cells – Fertilize with natural cell division agent before and after blooming time to promote cell division. Foliar spraying with GS BIG 1000x.

⇒ Nutrition management is important during the 1st cell enlargement stage – To manage young fruit after fruit setting, foliar spraying with FRUITFUL 500x + POLYCAB 1000x.

⇒ Calcium supply is important during the fruit enlargement stage. Irrigation with CALSTAR GOLD 30L / 1ha (2 months after blooming, 3 months after blooming)

5. There is a lot of sunscald fruits.

⇒ Easy-to-occur conditions - when the temperature rises sharply under humid conditions.

- Orchard with severe soil moisture change: On top of bedrock

- Tree with weak tree vigor: Excessive fruit setting and a lack of leaves

- Fruits with navel directed upward and thick fruit branch

Measures for reducing sunscald – Prohibit excessive fruit setting and secure number of leaves.

- Soil management: Use organic materials and keep soil moisture changes low.

- UV protection: Foliar spraying with SUNNY CAL 500x + SPEED UP 5000x

 

6. Severe biennial off-year – Keep fruit hang at an appropriate level, and make sure tree vigor does not become weak and stored nutrients do not become deficient by adjusting the soil moisture and harvest time.

⇒ For thanksgiving, foliar spraying with COMBI 1 2000x after the harvest

 

7. Sour taste is strong.

⇒ September is the most important time to reduce acid content – Manage by supplying appropriate moisture during the time root vitality is strong to prevent drying and supply microelements like boron, manganese, zinc, and copper, that influence the taste. Foliar spraying with COMBI 2000x.

 

8. Sugar content and coloring are not good. - Fruit skin color varies from yellow to orange depending on the carotenoid color and content, chlorophyll content and ratio and carotenoid color type.

⇒ Irrigation with SUGAR&COLOR 15L / 1ha and foliar spraying with SUNNY CAL 500x

 

9. Increased storage length after the harvest is desired.

⇒ If there is a post-harvest cleaning process – Clean by diluting GLOSTAR 500x at the end of the cleaning process.

⇒ In the absence of a post-harvest cleaning process – Spray the fruits by diluting GLOSTAR 500x right before harvesting from trees.