Longan Fruit Farming, and Cultivation Practices


Introduction to Longan fruit farming

Longan, (Dimocarpus Longan), additionally known as lungan, tropical fruit tree of the soapberry household (Sapindaceae) and launched into different heat areas of the world. The edible white-fleshed fruits are considerably much like the associated lychee. The juicy flesh has a mildly candy and musky taste. A Longan tree is a tropical tree species that produces edible fruit.

A information to Longan fruit farming, the cultivation course of

The tree produces light-yellow inflorescences on the finish of branches. The inflorescences are generally known as a panicle and are Four to 18 inches lengthy and broadly branched. The small flowers have petals which might be brownish-yellow colour. Longan fruit with flesh, seed, and peel seen. The fruit hangs in drooping clusters which might be round and about 1 inch vast. The peel is tan, and leathery with tiny hairs. The flesh has a candy style, which will be in comparison with the flavour of lychee. The tree is considerably delicate to frost. Longan bushes favor sandy soil.

Depending upon local weather and soil sort the tree might develop to over 100 toes in peak, however it usually stands 30 to 40 ft in peak and the crown is spherical. The trunk is 2.5 ft thick with corky bark. The branches are lengthy and thick, usually drooping. The leaves are rectangular and blunt-tipped, often 4–Eight inches lengthy and 2 inches vast. There are 6 to 9 pairs of leaflets per leaf and the higher floor is wavy and a darkish and glossy-green.

A information to Longan fruit farming.

Different kinds of Longan

There are quite a few cultivars of Longan tree; nevertheless, world-wide solely 30 to 40 are grown commercially. Reliable bearing is the main manufacturing downside for the Longan tree all through the world. Several new varieties and re-introductions together with ‘Edau’ (‘Daw’), ‘Chompoo’, ‘Haew’, and ‘Biew Kiew’ are underneath analysis by a number of establishments and producers. Though, nothing superior to ‘Kohala’ has been recognized. One of the just lately launched cultivars is called ‘Diamond River’ and this cultivar is reported to fruit yearly. However, fruit high quality is honest and the tree may be very inclined to limb breakage.

Fu yan (Lucky Eye) – Fruits are massive (18g), skinny pores and skin, crisp flesh, and small seed. It is one of the best selection for canning.

Wu lengthy line (Black Dragon peak) – Medium-sized fruits (15g) with thick pores and skin, and good flesh having candy taste.

Wu yuan (Black Round) – Fruits are medium in measurement (15g), seed massive, and the flesh gentle and juicy.

Daw – Fruit is massive with massive seed, skinny pores and skin, and crisp candy flesh.

Soil and local weather requirement for Longan fruit farming

Longan bushes thrive on numerous soil varieties offered they’re well-drained and they do properly on sandy loams, sand, and calcareous, rocky soils.

Longan tree is a subtropical tree properly tailored to tropical climates with distinctive moist or dry durations and subtropical areas with a cool, nonfreezing fall or winter interval. Longan vegetation develop at elevations from sea stage to 1500 toes. Longan vegetation produce extra reliably in areas characterised by low non-freezing temperatures (15°C or much less) and a dry interval through the fall and winter (October–February). Warm temperatures 21 to 29°C throughout spring, adopted by excessive summer season temperatures 27 to 35°C and non-limiting soil moisture are greatest for fruit improvement.

Warm and wet winters are conducive to vegetative development and cut back flowering and Longan fruit manufacturing. Excessive rains throughout flowering trigger flower drop and cut back pollination and fruit set. Young Longan plant leaves are delicate to robust winds throughout vegetative flushing which can lead to leaf dehydration, browning, and deformation.

Longan tree propagation

Longan bushes could also be grown from seed, nevertheless, cultivars don’t come true from seed, and the fruit of inferior high quality. Seedlings can be utilized for the choice of new cultivars or rootstocks. Air layering is the most typical propagation methodology. April by way of August is one of the best time for air layering methodology, and roots kind inside 10 to 12 weeks. Grafting onto seedling rootstock will be carried out by facet veneer or cleft grafting. Seedlings are grafted when pencil measurement (Eight mm) or bigger stem diameter. Trees will be top-worked by grafting onto chosen vigorous shoots. Trees could also be propagated by cuttings with mist and backside warmth.

Longan bushes are principally grown from seed. After drying within the shade for Four days, they have to be planted at once, however not more than 2 cm deep, in any other case they might ship up a couple of sprout. Germination takes place inside 7 to 10 days. The seedlings are transplanted to shaded nursery rows the next spring and set within the area 2 to three years later throughout winter dormancy.

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Longan vegetation will be propagated from seed, air-layering, budding, grafting, slicing, and inarching. Longan propagation by seed isn’t advisable for the reason that seedling takes a very long time to bear fruit (7-Eight years) and the planting materials isn’t true to sort. Vegetative propagations are the really useful technique of propagating the planting materials. Among the vegetative propagations, air layering is the most well-liked methodology and has been broadly used for a very long time. This course of yields a excessive proportion of profitable planting materials because the marcotted branches produce roots readily. Claims of success charges of about 80 to 90 p.c with air-layering are quite common.

Longan plant spacing

Longan bushes develop quick and at maturity are massive bushes. Homeowners ought to plant Longan bushes about 22 to 25 ft or extra away from different bushes and buildings. Longan bushes planted too near different bushes or buildings might not develop usually or produce a lot fruit because of shading.

The planting means of Longan

Properly planting a Longan tree is among the most necessary steps in efficiently establishing and rising a powerful and productive tree. The first step is to pick out a wholesome nursery tree. Commonly, nursery Longan bushes are grown in 3-gallon containers and bushes stand about 2 to Four ft (0.6–0.9 m) from the soil media. Large bushes in smaller containers have to be prevented as the foundation system could also be “root bound”. This means all of the accessible area within the container has been full of plant roots to the purpose that the foundation system turns into compacted inside the container. Rootbound root programs couldn’t develop correctly as soon as planted within the floor.

Longan bushes are greatest planted firstly of the moist season. Planting holes of about 60 x 60 x 60 cm are dug and allowed to climate for about two weeks earlier than planting. If the planting supplies are planted in polybags, make sure that the luggage are eliminated on the time of planting. Organic manure and phosphate fertilizer each will be integrated into the soil for use to fill the planting gap. Compact the soil after planting to make sure that there may be agency contact between the foundation system and soil mass. The plant have to be firmly staked and tied to keep away from been blown over by the robust wind. Tree spacing ranges from 6 x 6 m to 12 x 12 m; giving tree densities starting from 70 to 300 bushes/hectare. Inspect the tree for insect pests and illnesses and examine the trunk of the Longan tree for wounds and constrictions. Choose a wholesome tree and water it recurrently in preparation for planting within the floor.

Process of rising a Longan tree

  • Plant Longan tree in well-drained, barely acid soil in full solar, a minimum of 25 toes away from different bushes or buildings. Plant it on a small hill or mound if winters are moist.
  • Make your gap Three occasions the depth and diameter of the younger tree’s root ball. Shovel a number of the unfastened soil again into the outlet and place the Longan tree in order that it grows on the identical peak or barely greater than it did within the pot.
  • Cut the Longan tree again to Four toes whether it is taller than that. Water it deeply and then apply a few inches of mulch. Give it half cup of natural fertilizer each few months within the spring and summer season season, and proceed to water the tree regularly whereas it’s small.
  • Choose Three or Four of the strongest shoots the next spring and prune off the others. Then, lower these shoots again by a number of inches and use weights or wedges to drive them right into a extra horizontal place if needed. Then, prune off all however two shoots on every department within the third spring.
  • Cut again on water through the fall and winter after the tree reaches fruit-bearing age about Four years for bushes propagated from cuttings and six years for bushes grown from seed. Give the tree 5 kilos of natural fertilizer simply earlier than it blooms in early spring, once more in late spring, and as soon as extra simply earlier than harvesting the fruits in late summer season. Refrain from fertilizing your Longan tree through the fall or winter.
  • Watch for panicles of small greenish-yellow blossoms in early spring. Wait for the Longan fruits to vary from chartreuse to tan earlier than you harvest them. Taste one first to verify it’s prepared earlier than selecting the others as a result of they gained’t proceed to ripen after they’re faraway from the tree.
  • Snip off every cluster with pruning shears and refrigerate the fruits in plastic baggage till you’re prepared to make use of them.

Training, pruning, and manuring for Longan fruit farming

Early development is to be inspired to get a great Longan tree measurement and cover inside 3-Four years. Frequent irrigation and common software of vitamins will assist this. Organic manures like poultry manure have to be supplemented with fertilizers like Urea. The bushes have to be skilled to get meals mild penetration by way of the cover. Each tree have to be earthed as much as make a mound. Irrigation is given to encourage bud burst. Before flower emergence, it have to be withheld. And, once more irrigation is to be continued from panicle emergence, flowering, fruit set, harvest, and post-harvest flushing. Again when the tree undergoes a relaxation interval, irrigation have to be stopped. Just like irrigation, the fertilizer software must also be carried out Three to Four occasions through the completely different development durations in a 12 months. For a five-year-old tree about 625gN, 150g P and 800 g Ok should be utilized and elevated by 20% yearly until the 10th 12 months.

The water requirement in Longan fruit farming

Keep the soil of the younger tree moist and when the Longan tree begins to provide flowers, water recurrently until it bears fruit. Excessive rains throughout flowering trigger flower drop and cut back pollination. Established bushes have to be irrigated recurrently from the indicators of blooming seem and till harvest. The use of sprinklers on a timer may end up in overwatering, inflicting root rot and decline. Warm-season and wet winters encourage vegetative development and cut back flowering.

Pests and illnesses affected in Longan tree

A variety of pests can afflict the Longan tree, together with mites, scales, fruit flies, aphids, stem borers, leaf and flower consuming caterpillars, mealybug, and fruit piercing moth. Birds and flying foxes are interested in Longan fruits. After planting, irrigate Longan vegetation recurrently to determine. Once Longan bushes start to bear (Three to Four years after planting), water recurrently solely in spring and summer season season, once they’re flowering and bearing fruit.

Harvesting and yield in Longan fruit farming

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Harvesting and Yield of Longan.

The Longan fruits have a leathery brown pores and skin which is definitely damaged. The flesh is fragrant, candy, and moist, and few individuals don’t like consuming this fruit out of-hand. It will be frozen for extended durations and preserved with none lack of high quality. Longan fruits are harvested after full maturity and ripening. Harvested fruit have to be cooled as quickly as potential. Longan fruit has a comparatively brief shelf-life; place your harvest in a plastic bag and it should preserve within the fridge for five to 7 days. A completely mature tree yields about 100 – 120 kg /12 months. The Longan fruits will be saved for 4-6 weeks at 5°C.

Commonly requested questions on Longan fruit farming


Longan fruit.

How a lot time does it take for a Longan tree to bear fruit?

Seedling bushes take as much as 6 years to bear fruit; whereas air layered bushes can bear fruit 2 to three years after planting. In common, Longan bushes bear erratically (i.e., not yearly) and some years little to no fruit is produced.

Can I develop Longan from seed?

Most Longan bushes have been grown from seed and the seeds lose viability shortly. After drying within the shade for Four days, they have to be planted at once, however not more than 3/Four inches deep, in any other case they might ship up a couple of sprout. Seed germination takes place inside every week or 10 days.

How usually do you water a Longan tree?

Irrigate a Longan tree as soon as every week, however provided that it didn’t rain 1 inch of water throughout that week. Stop watering a Longan tree in late summer season after harvesting the Longan fruit.

Why my Longan tree is leaves turning yellow?

Deficiency of iron, manganese, and magnesium in Longan fruit bushes causes foliage to show yellow. Sometimes the fertilizers utilized in Longan bushes additionally include herbicides that trigger foliage to yellow and thicken. Nutrient deficiencies are widespread in Longan bushes rising in overly alkaline or poorly drained soil.