Session 3: Cultivation of Tuberose
Unit 1: Cultivation of Commercial FlowerCrops-I
Textual Question-Answers
Check Your Progress
A. Fill in the Blanks
1. Commercially, tuberose is propagated by ………………
Ans: bulbs
2. Semi-double flowers of tuberose bears ……………… rows ofpetals.
Ans: two to three
3. A fully developed bulb of tuberose forms ……………… bulbletsin one season.
Ans: 8–12
4. Tuberose flowering starts after ……………… months of planting.
Ans: 3–4
5. The bulb of tuberose is …………… shaped.
Ans: pear
B. Multiple Choice Questions
1. Long flower spike tuberoses are mostly used as –
(a) cut flowers
(b) table decoration
(c) bouquet preparation
(d) All of these
Ans: (d)
2. Planting time of tuberose in tropical areas of the country is………………
(a) September–October
(b) December–January
(c) March–April
(d) June–July
Ans: (c)
3. Temperature range for commercial cultivation of tuberose is……………
(a) 20–35°C
(b) 35–45°C
(c) 15–20°C
(d) 10–15°C
Ans: (a)
4. Tuberose bulbs should be stored for ……………… weeks afterharvest.
(a) 2–3
(b) 4–6
(c) 6–8
(d) 8–10
Ans: (b)
5. The yield of tuberose bulbs in one year of cropping is usually –(a) 6–8 tonnes
(b) 8–10 tonnes
(c) 10–12 tonnes
(d) 12–14 tonnes
Ans: (c)
C. Subjective Questions
1. What are the different types of tuberose flowers?
Ans: Tuberose flowers are classified into single, semi-double, and doubletypes based on the number of petal rows.
2. Explain the planting of tuberose.
Ans: Tuberose bulbs are planted on well-prepared beds at suitable spacingand depth. Healthy, uniform bulbs are selected and planted during therecommended season followed by irrigation.
3. How and when tuberose can be harvested?
Ans: Flower spikes are harvested when 1–2 basal florets open. Bulbs areharvested after the foliage dries and turns yellow.
4. Explain the insect pests and disease management in tuberose.
Ans: Major pests include thrips and aphids which are controlled by suitableinsecticides. Diseases are managed by field sanitation, proper drainage, andfungicidal sprays.
5. Explain the stem rot disease of tuberose.
Ans: Stem rot is caused by *Sclerotium rolfsii*. It results in rotting at thebase of the plant. Proper drainage, crop rotation, and soil treatment help in control.
D. Match the Columns
Ans:
1. Typical paling of foliage — (g) Nitrogen
2. Phosphorus — (f) Upper leaves become dark green and lower onespurple
3. Calcium — (b) Boron
4. Cracking of spike and bud rot — (b) Boron
5. Iron — (c) Interveinal chlorosis on the new leaves
6. Stunting in the inflorescence — (d) Magnesium7. Manganese — (a) Yellowing of leaves in between the veins
