Questions

Answer

Botanical name of rice is?

Oryza sativa L.

Family of rice is?

Poaceae (Gramineae)

Genus of rice is?

Oryza

Chromosome No of paddy is?

2n=24,48

Species of paddy are?

24 species (of which 22 are wild and 2 viz. Sativa & Glaberrima are cultivated

What is the % of  carbohydrate in rice?

77-79%

What is the protein % white rice?

6-7%

What is the fat % of rice?

2-2.5%

What is the protein % of brown rice

7-9%

Rice contains a low %  of

Calcium

Rice bran contains

8% of paddy weight & 15-20% oil

Which crop is firstly cultivated in Asia?

Rice (Proved by Sanskrit & litratures)

Origin place of rice is?

South India (A/C to de Condolle, 1886 & Watt, 1862)

The shoot system of rice is composed of?

Culms, leaves & inflorescence

 The seed of paddy is known as?

Caryopsis

The inflorescence of paddy is known as?

Panicle

The test weight of rice is?

25gm

Rice is a

Self pollinated plant

The dehulled rice grain is known as

Brown rice

Rice is a type of

Short day plant

Hulling % of rice is

66% or 2/3 of paddy

How much percentage of water is required to produce 1 kg of rice grain

5000 litres of water

To prevent de-nitrification & leaching losses which fertilizers should be incorporated in reduced zone so, that the process of nitrogen is delayed

N-Fertilizers

Largest rice producing state in India is?

West Bengal

State having highest productivity of rice?

Punjab

Which nitrogenous fertilizer is widely used in rice

Ammonium sulphate

What is the optimum pH of soil required for paddy cultivation?

4-7 pH

Which is the first mutated variety of rice?

Jagannath

What is the test weight of basmati rice?

21gm

Name the gene responsible for dwarfness of paddy is ?

Deo Geo Woo Gene

Which country is the maximum exporter of rice?

Thailand

Name the only hybrid variety released by private sector?

PHB-71

Golden rice is rich in

β carotene

Name the characteristics of Golden rice developed at IARI institute?

Excess of Vitamin A

What is the most critical stage of water for paddy cultivation?

Booting stage

Biofertilizer for rice is

Azolla

How many days after sowing paddy is ready to transplanting in Dapog method?

11-14 days

What is the sowing time for Aus paddy?

May to June

Sowing time of Boro rice?

Nov-Dec

Sowing time of Aman rice?

June-July

Name the type of rice in which lodging doesn’t occur.

Japonica rice

Sees rate of hybrid paddy is?

15kg/ha

Seed rate of paddy when SRI method is practiced

5-8 kg/ha

Seed rate of paddy when drilling method is practiced

60 kg/ha

What is the full form of SRI technique?

System of Rice Intensification

Name the varieties of rice that can be sown in both Kharif and Rabi

Rajeshwari & Hema

Hull is the combination of

Lemm+Palea together

Requirement of nursery for transplanting in one hectare?

1000 meter sq.

Which variety of rice is known as Miracle rice of India?

Jaya

Highest nitrogen losses in the rice crop by?

Denitrification

 

Scientists

Contributions

SRI method of rice cultivation in 1983 at Madagascar

 French Jesuit Father Henri de Laulanie

Golden rice

Dr. Ingo Potrykus

Hybrid rice

Yuan Long Ping

Super rice

Dr. G.H. Khush

 

 

 

 

 

 

 

 

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