Commercial Rajnigandha Cultivation Technique is also prominent for Agribusiness.
contacts & uses:
Rajnigandha is a member of Amaryllidaceae family. Its English name is Tuberose and the scientific name Polianthes tuberosa. The original home of the flower is Mexico. The flower is alive for 7-10 days in the vase and scent swells every night and charms the atmosphere in the house. Due to the increasing demand for this flower in Bangladesh, it is currently being cultivated commercially.
rajnigandha is very popular as a perfumed flower. this flower is named rajnigandha as it blooms and smells in the evening. this flower is not paired in terms of demand and from a commercial point of view. it is unique to vases as cut flowers. in addition, these flowers are used to make garlands, wreaths, braids and crowns. perfumes are prepared from the extract of this flower.
3 categories of rajnigandha are found based on flower size and petals.
a) single: the flowering petals of such varieties are in a row. flowers are completely white in colour and flowers are very fragrant.
b) semi-double: the flowering petals of such species are arranged in two/three rows.
c) double: the flowers of such species have a row of more than three sins. the petals have a light red hue on the edge and flowers are less fragrant.
single and double class rajnigandha are found in Bangladesh. but no breed has been invented so far.
rajnigandha breeds through both seeds and tubers. but in our country, rajnigandha is usually cultivated by kanda. the bulb found like onions at the base of each tree is called a tuber or bulb. at the base of the old tree, there are many bulbs in the form of brooms. the middle bulb grows. generally, large-scale bulbs are used for breeding from the middle. large bulbs are healthy trees and trees get flowers quickly but small bulbs are weak in nature and flowers come late. all the characteristics of the mother tree remain intact in the trees produced from the tubers and flowers come to the tree in a short time. in winter, the tubers are usually dormant underground. the tubers are suitable for applying at the end of winter.
climate and soil:
rajnigandha likes warm and humid weather so this flower is cultivated in our country in summer. successful cultivation of this flower requires an average temperature of 20-300 c and humid weather. the well-developed, organic-rich double soil is good for rajnigandha cultivation.
land making and fertilizer application:
the land has to be cultivated 4-5 times and made well. during the last cultivation, 5-10 tonnes of dung, 250 kg of phosphate and 200 kg of mp saar should be mixed well with the soil per hectare of fertility. when the growth of new trees begins 3 weeks after the planting of bulbs, half of urea fertilizer per hectare should be applied first and the other half should be applied when the flowering is removed. 12 kg of boric acid and 8 kg of zinc sulphate can be applied per hectare for good quality flowers.
the sown bulbs should be planted on the land in march-april. old roots have to be cut off while applying. generally, the distance from the line to the line can be determined to be 30 cm and the distance from bulb to bulb per line can be determined at 20 cm. the tubers should be applied in such a way that the tip of it is placed on the plains just below the ground. each bulb (1.5 – 3.0 cm) should be straightened and planted 7-10 cm deep in the soil. irrigation should be provided before applying tubers if there is a shortage of juice in the soil. it is also better to provide light irrigation to sit on the ground after planting the tubers.
rajnigandha fields should be kept weed-free. irrigation should be given as needed during the dry season and discretion drain should be constructed for excessive water suniscation during the rainy season. dry or dead leaves should be removed from the root of the tree. it is better to completely cut the upper part of the tree in winter. it is better to mix 2ml litres of malathion per litre of water and spray it every 7-10 days to control the aphid, 3ps insects.
disease name: scars and blight scars on botritis leaves
Causes of the disease: Botrytis sp.
symptoms of the disease:
this disease is seen during the monsoon season. first, the affected flowers are stained with brown colour and all the flowers dry up. the incidence of the disease is also seen in the leaves and stems.
spraying rovral (mancozeb) at the rate of .2% every 7-10 days to prevent this disease yields good results.
flower cutting and processing:
Flowers can be produced from the same field in Rajnigandha for 3 consecutive years. Rajnigandha is in the form of a manjari on the head of a long data. When the first flower of Rajnigandha’s flower is bloomed, the flowers have to be cut with stalks. Flowers have to be cut in the cold weather of the morning or in the late afternoon. With a sharp knife or a six, a flower stalk has to be cut 4-6 cm above the ground so that the growing bud stalks are not damaged. To avoid water damage (Transpiration loss) due to the sensation, the unnecessary leaves can be removed as quickly as possible and conveniently bundled and first soaked in water with sugar in buckets for 2 hours and then wrapped in perforated polythene and sent to the remote market. In this process, the life span (Vase life) of the followers is prolonged.
bulbs or tubers hoisting and saving:
when the tree’s trunk closes in December-January, the tubers have to be picked up from the ground and cleaned and spread on the shaded dry floor. mature tubers can be selected as needed and later used for breeding purposes. rajnigandha’s tubers are very painful and can be easily preserved in normal conditions.
it is possible to produce flowers again during the season through proper care by keeping the crops of rajnigandha in the field in the previous year. in this process, the number of flower flowers is more, but in all respects the value of the flower decreases, thereby reducing the market price. however, with double fertilizers and adequate irrigation, the process can benefit immensely by producing flowers in the unseasoned season through proper interim care.
rajnigandha can be cultivated in large tubs. a few tubers are applied along with the appropriate tub mixture and regular irrigation and sometimes a little oil and dung rot mixture provide quality flowers.
rajnigandha cultivation is very profitable. its export market is particularly promising abroad. it has been found that 3.5 lakh flower stalks are found by applying about 1 lakh kandas per hectare. currently, the retail price per dati in the local market is rs 2-4. but its value is quite variable in the season. nevertheless, this crop has progressively become a profitable crop in our country. for this reason, special attention needs to be paid to its cultivation and development of the market system.
Commercial Rajnigandha Cultivation Technique is very much important for Entrepreneurship in terms of Agribusiness.
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