Production Technology of Betel nut

Production Technology of Betel nut. https://cststudy.blogspot.com

Production Technology of Betel nut

Arecanut/Betel nut

Botanical Name: Areca eatechu. 

Family: Palmae.

Origin: 

India and South Eastern countries.

The areca nut palm produces the common chewing nut which is popularly known as betel nut or  supari. This nut is consumed in very large extent hence has great demand. The areca nut is not a true  nut, but rather a fruit categorized as a drupe. It is commercially available in dried, cured and fresh  forms. 

Variety 

No definite variety in Bangladesh. In, Bangladesh local variety are cultivated. It is named by the  name of growing place such as Rangpuri, Barisali, Sylheti etc. Recently, Bangladesh Agricultural  Research Institute released two hybrid variety. They are known as BARI supari 1, BARI supari 2. 

Some Indian varieties are Mangala, Sumangala, Subamangala, Mohitnagar, Srimangala, Samruthi etc.

Climate 

•  Arecanut is a tropical crop. It is capable of growing under variety of climatic conditions. 

•  It grows well from sea level upto an altitude of 1000 m in areas of abundant and well distributed  rainfall. 

•  It is grown in high rainfall area about 200 to 400 cm. 

•  The cultivation is mostly confined to 20° North and South of the Equator. 

•  It is unable to withstand extremes of temperature and wide diurnal variations. The optimum range  of temperature is 15­-38°C for its good growth. 

•  High humidity and areas free from cyclonic wind and sun scorching are congenial.

Soil 

The arecanut palm is grown in a variety of soils. The soil also should be deep and well drained. Water  logged, soils should be avoided. The depth of soil should be at least 1m with 4.5­7.6 pH. An adequate  irrigation facilities are required for its satisfactory production.

Land Preparation

Land should be ploughed and harrowed 2 times to bring the soil to fine tilth stage and make the field  weed free from previous crops.

Propagation 

It is propagated by seeds. The selection of proper planting material is of almost importance.

Selection of Mother Palms 

Select mother palms showing earliness in bearing and high percentage of fruit set. The age of the  palm should 20­-40 years and have a regular bearing habit. Less than 10 leaves and 4 bunches per year  and poor yielding mother trees should be rejected.

Selection of Seed Nuts 

Select fully tree ripe nuts for use as seeds. Discard nuts which are undersized, malformed and low in  weight.

Raising of Seedlings 

Sow selected seed nuts soon after harvest in nursery bed with stalk end up and with a spacing of 5­6  cm. Cover the seed nuts with sand and irrigate daily. Germination starts about 40 days after sowing  and the sprouts are ready for transplanting when they are about three months old having 2­-3 leaves.

Prepare secondary nursery beds of 150 cm. width and a convenient length. Transplant sprouts at a  spacing of 30 X 30 cm with the onset of the monsoon. Partial shade to the seedlings can also be  provided by banana, Coecinia indica or by means of artificial pandal. Provide irrigation during hot  and dry periods and drainage during monsoon. Periodical weeding and mulching are necessary.

Time of Planting 

June – December is found to be the good for it’s planting.

Selection of Seedlings 

Select good seedlings for transplanting in the main field when they are 12­-18 months old. Selection  of seedlings can be based on Selection Index which is calculated by multiplying leaf number by 40  and subtracting the seedling height.

Example:  Seedling height 90 cm. Leaf numbers 5,  Selection index (5x40) ­ 90 = 110

Select seedlings with higher Selection Index Values i.e. if index values range between 50 and 150,  select  seedlings  with  higher  values.  Remove  seedlings  with  ball  of  earth  attached  to  them  for  transplanting.

Planting 

Plant tall, quick growing shade trees on the Southern and Western sides of the seedlings to provide  protection from sun scorching. This helps for better stand of crop in the initial stage. Dig pits of 90 X 90 X 90 cm at 2.7 X 2.7 m and fill up with rich top soil to a level of 15 cm from the  bottom. Plant seedlings in the center of pit, cover with soil upto collar and press around. Banana is  raised between rows to provide shade to the seedlings in the initial stages upto 4­-5 years.

Fertilizer Application 

A steady and high yield will depend much on the adequate availability of plant nutrients in the soil. p The application of fertilizer for adult palm are

♦  N :  100 g/ palm/ year. 

♦  P2O5 :  40 g/ palm/ year. 

♦  K2O : 146 gm/ palm/year. 

♦  Compost: 12 Kg/ palm/ year.

1.  Apply 1/3 dose of fertilizer and full dose of green manure and compost during first year.

2.  2/3 dose of fertilizer and full dose of green manure and compost during second year.

3.  Full dose from third year onwards during September – October.

♦  Under irrigated conditions, apply fertilizers in 2 split doses

•  The first during September – October.

•  The second during February. 

♦  Under rainfed conditions apply the

•  Second dose during March – April after receipt of summer rains.

♦ Apply manure and fertilizers in circular basins of 15­-20 cm depth and with a radius of 0.75­-1m  from the palm. Apply second dose of fertilizer around the base of palm after weeding and mix into  soil by light forking.

♦ In acidic soils, broadcast lime @ 0.5 kg per palm once in 2­-3 years and incorporate into soil during  April – May.

Irrigation and Drainage 

Areca nut cannot withstand drought for a long time. Being a perennial crop, once affected by water  stress, it may require two­-three years to regain the normal vigour and yield. The death of palms due to  moisture stress is possible in long drought season. 

•  Irrigation should be given @ intervals of 4 and 10 days for better growth and yield. 

•  The quantity of water required is about 175 to 200 lit. per palm/irrigation. 

However, in case of areas having water problem can adopt drip irrigation or sprinkler irrigation to  overcome the water problem. Drainage channels should be made based on soil type. In heavy soils  drainage channels should be dug in each row to drain out the excess water. The channels should be at  least 15 cm to 30 cm deeper than the depth at which the palm nut seedlings are planted.

Weed Control 

Regular manual weeding tasks should be carried out to make the nut orchard weed free. Weeding is  done twice or thrice a year by spade digging. Light forking or digging after cessation of monsoon  should be carried out. Remove any dead or diseased palm leaves. Mulching can be done to prevent  weed growth and soil erosion, terracing can also be done to prevent soil erosion in sloppy areas. This  also helps in retaining the water from evaporation.

Intercropping 

Owing to the long pre­bearing age of the palm, practically no income obtained during the first 3-­4  years. Black pepper, coffee, vanilla, cocoa, citrus, cinnamon and clove can be cultivated as intercrop  in arecanut cultivation.

Pests and Diseases 

▲ Pests: Mites, Spindle bug, Inflorescence caterpillars and Nematode are the common pests found in  arecanut cultivation.

▲ Diseases: Bud rot disease, Stem breaking, Foot rot, Yellow leaf disease, Leaf spot and Nut crack  are the common diseases found in areca nut cultivation.

Control 

1.  Apply Dust Methyl parathion 20 EC 2 ml/lit or WP @ 2.5 g in one litre of water.

2.  Mites can be controlled by spraying Dicofol 18.5 EC @ 2.5 ml/lit.

3. For bud rot, Infected tissues of the bud should be scooped off and treated with 10 %  Bordeaux paste. 

4. Leaf spot can be reduced by foliar spray with Bordeaux mixture 1% or 0.2% Dithane M 45.

5.  Spray Borax 2 g/lit with proper water management for nut crack.

Harvesting 

The nut bearing starts after 5 years of planting. The plant is monocius, producing both male and  female flowers on the same tree. The spadix of a grown up palm produces on an average 294 female  flowers. 

The colour of the fruit during its growth changes from green to different shades of yellow and red  during ripening. Nut matures after 8­9 months after fertilization. 4­5 spadix are produced by the palm  per year. The number of harvesting will vary from 3 to 6 in 1 year depending upon the season and  place of cultivation.

Yield 

In arecanut cultivation, an average yield of 300 to 400 nuts/palm/year or 1250 kg/ha can be obtained.