Session 4: Cultivation Technique of Gladiolus
Unit 1: Cultivation of Commercial FlowerCrops-I
Textual Question-Answers
Check Your Progress
A. Fill in the Blanks
1. One of the leading geophytes grown for cut flower trade andgarden displays is ………………
Ans: gladiolus
2. Gladiolus is propagated through ……………… or ………………
Ans: corms; cormlets
3. Gladiolus plant may produce up to ……………… cormlets.
Ans: 50
4. Corms or cormlets of gladiolus can be planted up to the depth of……………… cm.
Ans: 15
5. Single plant of gladiolus produces ……………… marketable spikeand plantable corms.
Ans: one
6. In gladiolus, the qualities of spikes are judged by the ………………of spike.
Ans: length
B. Multiple Choice Questions
1. Gladiolus prefers ………………(a) fully shade weather
(b) fully rainy weather
(c) fully moist weather
(d) fully sunny weather
Ans: (d)
2. A planting depth of ……………… is suggested for gladiolus.
(a) 7–15 cm
(b) 15–20 cm
(c) 20–25 cm
(d) 25–30 cm
Ans: (a)
3. GA is used for soaking of corms at a concentration of……………… to increase sprouting.
(a) 250 ppm
(b) 300 ppm
(c) 200 ppm
(d) 150 ppm
Ans: (c)
4. Growth promoters like GA, NAA, kinetin, etc., at a concentrationof ……………… ppm to enhance sprouting.
(a) 5–10
(b) 10–50
(c) 50–100
(d) 100–150
Ans: (b)
5. The most common physiological disorder in gladiolus is………………
(a) flower abortion
(b) fluoride injury
(c) crooked stem
(d) None of these
Ans: (b)
C. Subjective Questions
1. Describe the staking of gladiolus.
Ans: Staking in gladiolus is done to support tall flower spikes and prevent lodging. Stakes are provided to plants, and spikes are tied gently for straight growth.
2. Explain the harvesting of gladiolus.
Ans: Gladiolus spikes are harvested when the lowest floret shows colour. Harvesting is done early in the morning or late evening using a sharp knife.
3. Explain the physiological disorders in gladiolus.
Ans: Common physiological disorders in gladiolus include flower abortion,
fluoride injury, crooked stem, and topple. These occur due to nutrient imbalance, poor light, temperature stress, or soil conditions.
D. Match the Columns
Ans:
1. Flower abortion — (a) High temperature or frequent fluctuation
2. Fluoride injury — (c) Tip burn on leaves
3. Topple — (b) Deficiency of calcium
4. Crooked stem — (d) Poor light condition
