Paddy Crop

Paddy ( Rice)

Botanical Name :- Oryza Sativa
Family :- Graminnae (Poaceae)
Origin :- Southeast Asia
2n :- 24

Cultivated Species :- Oryza Sativa
                                  Oryza Glaberrima

Oryza Sativa commonly grouped three subspecies :-

Indica :- Grown in India

Japonica :- Grown in Japan

Javanica :- Grown in Indonesia

Seed rate kg / ha :-

• Broadcasting :- 100 kg.
• Drilling :- 60 kg.
• Depog :- 1.5 - 3 kg. / m²
• SRI :- 5 - 8 kg.
• Hybrid :- 15 kg.

Sowing time of rice :-

1. Asu / Autumn :- March - April
2. Aman :- May - June
3. Boro :- December - January

Area / Production / Productivity :-

• Area :- India, China, Indonesia
• Production :- China, India (2^nd), Indonesia
• Productivity :- USA, Japan, China

Area / Production / Productivity in India :-

• Area :- West Bengal
• Production :- West Bengal
• Productivity :- Punjab

Inflorescence of rice :- Panicle

pH of rice :- 4 - 6

Fruit of rice is known as :- Caryopsis
Test weight of basmati rice grain :- 21 gm.
Test weight of rice :- 25 gm.
Cardinal temperature of rice :- 30 - 32 °C

Disease :-

• Akiochi disease in rice is caused by :- Hydrogen Sulphide (H₂S)
• Khaira disease caused by :- Zn deficiency
• Montek disease caused by :- Rice root nematode
• White eye disease caused by :- Fe deficiency

Best bio-fertilizer for rice :- Azolla

Bio-herbicide used in rice :- collego

Leaf colour chart used for :- Leaf nutrient status

Dehusted (Parboiled) rice is known as :- Brown rice

Dwarfing gene in rice is :- Dee - Gee - Woo gene

Essential nutrient in rice production is :- Silicon

Recommended NPK in rice :- 120 : 60 : 40 kg/ha

Golden rice is rich source of :- Vitamin A

Green revolution has been most successful due to :- Wheat & Rice

Harvest Index Of Rice :- 0.40 %

Highest Productivity of rice in world :- Japan

Hulling % of rice is :- 70 - 75 %

Hydro thermal treatment of rice grain before milling is known as :- Parboiling

Mat type nursery is related to :- Paddy crop

Milling % of rice is :- 50 - 55 %

Nitrogen use efficiency (NUE) in rice is :- 30 - 40 %

Paira & utera cropping system is closely related to :- Rice

Parboiled rice contain is :- Vitamin B₁₂

Puddler & puddling practices are used in :- Rice

Suitable Climate :- Humid to sub-humid

Suitable Soil :- Clay loam

Direct Seeded rice is known as :- Upland rice

Rice is a type of plant :- Self Pollinated

                                       C3 Plant 

                                       Short Day Plant

Rice uptake nitrogen in the form of :- Ammonia (NH₄)

Rice stem is commonly known as :- Haulm & Culm

Spacing of medium duration variety of rice :- 20 X 15 cm.

The gas emits from rice field is :- Methane

The weed problem is more in :- Upland (Direct Seeded)

Yield increased by adopting System of Rice Intensification (SRI) :- 50 - 90 %

Zero tillage drill is used for sowing of :- Wheat in Rice - Wheat cropping system

Suitable variety for direct seedling is :- Bala

Rice variety suitable for water logged area is :- Jalmagna

Gall midge resistance variety of rice is :- Phalguna

Deep water rice variety are :- Jaganath, Pankaj

1^st dwarf variety of rice in India (1968) :- Jaya

1^st high yielding dwarf variety of rice developed in world :- IR-8 (Dee-Gee-Woo gene X Peta)

1^st hybrid variety of rice in India (1994) :- CORH-1