Questions

Answer

1

Botanical name

Ricinus communis

2

Family

Euphorbiaceae

3

Origin of Castor

Africa

4

Chromosome number

2n = 20

5

Suitable soil for Castor cultivation

Slightly acidic, sandy loamy soil

6

Castor is a

Non edible oil seed crop

7

Seed rate – for verities

10 kg/ha

8

Seed rate – for hybrids

5 kg/ha

9

Spacing requirement for Castor (Varieties)

90 x 60 cm (Rainfed condition)

90 x 90 cm (Irrigated condition)

10

Sowing time for castor

June - July

11

Inflorescence of Castor is known as

Raceme

12

Fruit of Castor is known as

Capsule

13

Oil percent in Castor seeds

35 – 58 %

14

Toxicity of raw castor beans is due to

Ricin

15

The technique used to increase the growth of castor plant

Nipping

16

Castor is the host plant for

Eri silk worm

17

Mutant variety of Castor

Aruna

18

Spacing requirement for Castor (Hybrids)

120 x 90 cm (Rainfed condition)

150 x 120 cm (Irrigated condition)

19

Castor plant is

Monocious 

20

High yielding varieties of Castor

Aruna, TMV-5, DCS-9, GCH-8

21

Depth of sowing

4 – 6 cm