Session 2: Cultivation of Chrysanthemum
Unit 1: Cultivation of Commercial FlowerCrops-I
Textual Question-Answers
Check Your Progress
A. Fill in the Blanks
1. Pinching in chrysanthemum is done by …………………… ofthe growing tips of the plants at …………………… stage.
Ans: removal; 10–15 cm
2. Standard chrysanthemum is harvested when ……………………but before …………………… begins to elongate.
Ans: flowers are fully developed; disc
3. Chrysanthemum is commonly known as ………………… or…………………
Ans: Guldaudi; autumn queen
4. Chrysanthemum flowers, which have invisible disc, are……………… and …………………
Ans: pompon; decorative.
5. Chrysanthemum can be commercially propagated by……………… and ……………… cuttings.
Ans: terminal; sucker
B. Multiple Choice Questions
1. The critical day length required for flower initiation and flowerdevelopment of chrysanthemum is –
(a) 14–15 hours and 13–14 hours
(b) 11–12 hours and 12–13 hours
(c) 10–11 hours and 9–10 hours
(d) 16–17 hours and 15–16 hours
Ans: (b)
2. Chrysanthemum can be grown on the soil pH of about –(a) 7.5
(b) 6.5
(c) 5.5
(d) 4.5
Ans: (b)
3. Terminal or tip cuttings of ……………… for chrysanthemumshould be taken from a healthy stalk.
(a) 7–10 cm
(b) 10–15 cm
(c) 5–8 cm
(d) 15–20 cm
Ans: (c)
4. ……………… are used to control the outside growth of heavybloomers pots plants of chrysanthemum.
(a) 7–10 stakes
(b) 10–12 stakes
(c) 1–2 stakes
(d) 3–5 stakes
Ans: (d)
5. Removal of suckers from the base of chrysanthemum is knownas ………………
(a) de-suckering
(b) pinching
(c) stopping
(d) disbudding and de-shooting
Ans: (a)
6. ……………… is the removal of the growing tips of plants at 10–15 cm stage which results in the production of several lateral shoots.
(a) De-suckering
(b) Pinching or stopping
(c) Disbudding
(d) Topping
Ans: (b)
C. Subjective Questions
1. How the varieties of chrysanthemum are classified?
Ans: Varieties of chrysanthemum are classified based on flower form andsize into single, decorative, pompon, anemone, incurved, reflexed, andstandard types.
2. Write about the vegetative propagation of chrysanthemum.
Ans: Chrysanthemum is propagated vegetatively by terminal and suckercuttings. Healthy cuttings are taken from mother plants, treated if necessary, and planted in nursery beds or containers for rooting.
3. What is disbudding in chrysanthemum?
Ans: Disbudding is the removal of unwanted side buds to allow betterdevelopment of the main flower with improved size and quality.
4. Write about staking in chrysanthemum and give its advantages.
Ans: Staking is the practice of providing support to chrysanthemum plantsusing stakes to prevent lodging. It helps in straight growth, prevents breakage, and improves flower quality.
D. Match the Columns
Ans:
1. Cuttings — (b) Terminal 5–8 cm long healthy stalk
2. Pompon type chrysanthemum — (a) Invisible disc
3. Standard variety — (c) Mahatma Gandhi
4. Single-type chrysanthemum — (d) Strap-like ray florets
Ans: (d
