Planting density markedly influences flower yield and quality. The planting distance varies with the soil and climatic conditions. Low planting density results in wastage of inputs and very high planting density lead more plant competition, thus reducing individual bulb enlargement. For economic returns, bulbs are planted at an optimum spacing of 30 x 20 cm or 20 x 20 cm. About 40,000 – 50,000 bulbs are required for the one-acre planting of tuberose. i.e.) about 1, 00,000 to 2, 00,000 bulbs are required for planting one hectare of land.
Depth of planting
The depth of planting varies from 3.0 – 7.0 cm depending upon the diameter of the bulb and the soil type. It should be 2.5 times more than the diameter of bulbs. While planting, the bulbs are planted at the recommended plant-spacing, 4-6 cm deep on the sides of the ridges. Planting is deeper in sandy soil as compared to clay soil. In sandy loam soil planting of bulbs is done at a depth of 6.0 cm. In general, planting is done in such a way that the growing portion of the bulb is kept at the ground level.
Seed / bulb treatment
Dipping the bulbs in 4% solution of thiourea can break the resting period. Pre-plant storage of bulbs at 10°C for a period of 30 days will improve the plant growth, increase spike and flower yield. Pre-planting treatment of bulbs with GA3, ethereal or thiourea promotes the early appearance of flower spike and produces longer spikes with a maximum number of florets.The bulbs are first thoroughly cleaned and treated with Bavistin (0.2%) for 30 minutes. Dipping the bulbs for about 20-30 minutes in a solution of Emisan (0.2%), Thiram (0.3%), Captan (0.2%) or Benlate (0.2%) is also recommended. Dry in the shade before planting or storing. Before planting treat bulbs in systemic fungicide and before storing in contact fungicide.
“Tuberose — Vikaspedia.” Vikaspedia. N.p., n.d. Web. 08 Sep. 2017 <http://vikaspedia.in/agriculture/crop-production/package-of-practices/flowers/tuberose>.
Tuberose — Vikaspedia. (n.d.). Retrieved from http://vikaspedia.in/agriculture/crop-production/package-of-practices/flowers/tuberose
- Central Coastal Agricultural Research Institute, Ela, Old Goa, Goa