Paddy Crop Important Points

Paddy Crop Useful For All Agricultural Exams
Paddy Crop
Questions Answer
What is the botanical name of paddy? Oryza sativa
Family of rice? Graminae
What is the origin of paddy? Indo-Myanmar region (Southeast Asia)
What is the seed of paddy?(www.agriexam.com) Caryopsis
What is the flower of paddy called? Panicle
What is the chromosome number in paddy? 2n=24
What is the test wight of rice? 25 gram
What is the test wight of basmati rice? 21 gram
What percentage of protein is in rice? 6-7%
What percentage of fat is in rice? 2.2-2.5%
What is the percentage of carbohydrate in rice? 77-79%
Which state is the largest producer of paddy? West Bengal
Which state is most productive of paddy? Punjab
What is the first mutated variety of paddy?
(www.agriexam.com)
Jagannath
What is the responsible gene for dwarfness in paddy? Deo Geo Woo Gene
Which is the only Paddy’s hybrid variety developed by private institute? PHB-71

Paddy Crop Important Points

Questions Answer
Golden rice is rich in? β-carotene
What are the characteristics of Golden Rice developed at IARI Institute? Excess of vitamin A
What is the protein of paddy called? Oryzenin
Where was the method of preparing the nursery of paddy was introduced? IRRI Philippines
How many days are prepared in the Depog method to transfer the plant from the nursery to the field? 11-14 day
Showing time of Aus Paddy May-June
Showing time of Amun Paddy? June-July
Showing time of Boro Paddy?(www.agriexam.com) November-December
Lodging doesn’t occur in? Japonica rice
How much seed rate is kept in the broadcasting method of paddy? 100 kg/ha
How much seed rate is kept in paddy “drilling method”? 60 kg/ha
How much hybrid paddy seed rate is kept? 15 kg/ha
How much is the paddy seed rate kept in “Depong method”? 1.5-3 kg/M²
How much paddy seed rate is kept in “SRI method”? 5-8 kg/ha
The ‘Jaya variety’ of paddy was developed by whom?
(www.agriexam.com)
Dr. Shastri
Which varieties of paddy can be grown in Rabi and Kharif season? Rajeshwari and Hema
Which weed is most commonly used in paddy field? Propanil (stomach F-34)
 Hull is combination of? Lemma + Palea together.
Rice is a type of plant? Self pollinated & Short day plant

Paddy Crop Important Points

Questions Answer
What is the full form of SRI ? System of Rice Intensification
Who was developed SRI method of rice cultivation in 1983 at Madagascar ? French Jesuit Father Henri de Laulanie
Nursery area required in rice for transplanting in one hectare ? 1000 M²
Nursery area required in rice for transplanting in one hectare in the Deppog method ? 25-30 M²
Hydro-thermal treatment of rice grains before milling called as? Paraboling
Paraboling of rice conserve which vitamin ? Vitamin B-12
Main objective of Puddling in rice cultivation ? Control weeds, Reduce water losses & Increase nutrient availability
Main objective of beushening in rice cultivation ? Control weeds, Increase soil aeration & optimise crop standing
The gas emitted from rice field is?(www.agriexam.com) Methane (CH4)
Highest nitrogen losses in rice field by ? Denitrification
Which nitrogen fertilizer suitable for rice cultivation ? Ammonium Sulphate
Suitable biofertilizer for rice field ? Azolla
First hybrid variety of rice developed by using cytoplasmic male sterility at ? China (1970)
The rice variety called ‘miracle rice’ is? IR-8
which rice variety known Miracle rice in India ? Jaya
Most critical stage for water in rice cultivation?  

(www.agriexam.com)

Booting stage

Paddy Crop Important Points

Questions Answer
Solar radiation required for better yield of rice? 500-700 cal/cm-²/day
Rice crop required how much rainfall for better yield? 150cm – 200cm
Root system of rice is?
(www.agriexam.com)
Fibrous root system
The topmost leaf below the Panicle is called? Flag leaf
Airborne disease “Blast” (Rich man’s disease) caused by? Pyricularia oryzae
“Bacterial leaf blight” caused by which bacteria ? Xanthomonas oryzae
The disease that caused Bengal famine in 1943 (brown leaf spot) caused by ? Helminthosporium Oryzae
Bakanae disease (foot rot or foolish seeding) caused by? Gibberella fujikuroi
Viral disease “Tungro” spread by?(www.agriexam.com) Green leaf hopper
Viral disease “Grassy stunt” of rice Spread by? Brown plant hopper
Which monophagous pest of rice produce “Dead hearts” on affected plant ? Yellow stem borer
 “Gandhi Bug” attack on rice crop at which stage and suck juice? Milky stage
Which pest of rice caused “Silver shoot and onion leaves” symptoms on plant ? Gall midge



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Questions Answer
Hybrid rice developed by? Yuan Long Ping
Golden rice developed by?
(www.agriexam.com)
Dr. Ingo potrykus
Super rice developed by? G.H. Khush
 Indica (Sub species of Oryza sativa) rice is grown in? India
Japonica (Sub species of Oryza sativa) rice is grown in? Japan
Javanica (sub species of oryza sativa) wild species grow in? Indonesia
Which rice variety suitable for waterlogged condition? Jalmagna
Salinity tolerant variety of rice is? Lunishree & IR-8
Which variety of rice best for direct Sowing? Bala
Fertilizer required for rice field? N:P:K:Z(Zinc) 120:60:40:25
Akiochi disease of rice due to? H2S Toxicity
Paira and Utera cropping system is closely related to? Rice
Which are killer disease of rice?(www.agriexam.com) Bacterial blight & Tungro virus
Khaira disease(mainly in nursery) of rice due to deficiency of(first reported by Y l Nene 1966 Pantnagar)? Zinc
"White eye" of rice is due to deficiency of? Iron
Lunishree is a variety of? Super Rice

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Paddy Crop Important Points

Questions Answer
The crop which prefer Ammonical form of N? Rice
Widely used nitrogenous fertilizer in rice?  Ammonium Sulphate
The nitrogen fixing bacterium found on root surface of rice? Azospirillum
Oldest N fertilizer, best for top dressing in rice?  Ammonium sulphate (20.6%N and 24%S)
The best fertilizer for top dressing in rice?  Ammonium sulphate
Gas emitted from rice field is?  CH4 (Methan)
In rice ‘Dappog seedlings’ are ready for transplanting? 11-14 DAS
Under SRI method, rice plant is transplanted at? 10-12 DAS (Days After Sowing)
Seedling ready for transplanting in Deppog method? 12th day
Normally rice plant is transplanted at?  21-25 days after sowing (3-4 leaf stage)

Paddy Crop Important Points

Questions Answer
Nitrogen use efficiency in rice is around?  30-40%
Polish percentage of rice is? 2%
Hulling percentage of rice is? 70-75%
Water requirement of rice is? 90-250 cm
The nursery area required for providing seedlings for transplanting 1 ha rice field? 1000 M2 (1/10 ha)
Isolation distance for self pollinated crops i.e. rice, wheat?  3 m
In low land rice, fertilizer is applied in? Reduced zone only
Cardinal temperature for good rice crop growth is?  30-320C
Best pH for cultivation of rice is? 4-6 pH

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Paddy Crop Important Points

Questions Answer
Paira & utera cropping system is closely related to? Rice
Puddler & puddling is related to? Rice
Acid tolerant crop is? Rice
Most prominent cropping pattern of rice in India?  Rice-Wheat
Dapog method is most commonly prevalent in? Philippines
The tillage implement, most suitable for rice cultivation is? Power tiller
The best system of rice culture is? Transplanting
The normal ratio of rice/paddy is?  2/3
Chasmogamy was found in?  Rice, Moong and Oat
White eye of rice is due to? Fe deficiency
Nursery area required for seedling of rice for one hectare field is? 0.10 ha.
C3 pathway found in?  Rice, Wheat, Pea, Soybean
Nitrogen fixation in rice field is carried out by which blue green algae?  Azolla

Paddy Crop Important Points

Questions Answer
The cultivated spp. of paddy?  Oryza sativa and Oryza glaberima
Sowing of paddy in April-May and harvesting in August-Sept. is called as? Aus/Autumn /Pre kharif paddy
Sowing of paddy in June-July and harvesting in October is called as? Aman/Kharif/ Aghani
Sowing of paddy in January-Feb and harvesting in April-May is called as? Boro/Summer/ Spring
Tip burn of rice? O2 deficiency and excess of Zinc
SRI denotes?  System of Rice Intensification
For correction of iron chlorosis in rice, following spray is recommended?  1% solution of ferrous sulphate
The most important critical stage of rice for irrigation? Tillering to flowering stage
Aroma in rice is due to presence of? Di-acetyl 1 propaline” chemical

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Paddy Crop Important Points

Questions Answer
The Blast resistance varieties of rice is?  Tulsi, IR64
The deep water rice are? Punkaj, Jagannath
Rice varieties suitable for Saline-alkaline soil are? CSR-10, CSR-13, CSR-27
The rice variety which has no seed dormancy? I.R.-50
Hybrid variety of rice is developed by using? GMS and CGMS line
First intervarietal cross variety of rice?  Jaya (TN1 × T141)
The Gall midge resistance varieties of rice is? Phalguna, Surekha, Suraksha
First rice variety introduced in India? IR – 8 (1966)
First developed rice variety? T.N. – 1
The world’s first high yielding variety (dwarf) of rice has been developed by IARI? Pusa Basmati

Paddy Crop Important Points

Questions Answer
Weed caused relatively more loss in rice productivity, when it is? Direct seeded
Mimicry weeds of rice is? wild rice
What is the Critical Period of Crop-Weed Competition for Upland rice condition?  Entire period of crop growth
Most dominated weed species in rice field is? Echinochloa spp.
What is the Critical Period of Crop-Weed Competition for transplanted rice?  30-45 DAS
Common herbicide used in rice crop field?  Anilophos and Butachlor
In waterlogged rice field, atmospheric nitrogen can be fixed to the soil by? BGA
The most prominent and adopted cropping pattern in India?  Rice - Wheat
Irrigation method suitable for lowland rice and jute? Flooding

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Paddy Crop Important Points

Questions Answer
Golden rice Dr. Ingo Potrykus
Hybrid rice Yuan Long Ping
Super Rice Dr. G.H. Khush
Dapog seedling Rice seedling
Parboiling  Rice


Paddy Crop Important Points

Questions Answer
Serious pest of Rice is? Yellow stem borer
The scientific name of Yellow Stem Borer? Scirphophaga incertulas
Rice stem borer (scirpophaga incertutas) is a? Monophagous
The scientific name of Rice Gall Midge?  Orseolia oryzae
The scientific name of Green Leaf hopper (GLH)? Nephotetrix nigropictus
The scientific name of White-backed Plant-hopper (WBPH) Sogatella furcifera
The scientific name of Brown Plant hopper (BPH)? Nilaparvata lugens
Which pest causes severe damage to rice panicle at night?  Rice Army worm (Mythimna saparata)
Vector of Rice tungro is?  Green leaf hopper (Nephotettise spp.)
Dead heart & white ear are associated with the crop? Rice
Insects which attacks rice at night?  Army worm
Kresek in rice is caused by?  Xanthomonas oryzae
Chaffy grains with black spot is the infestation of?  Gundhi Bug (Leptocorisa acuta)
Sheath blight of rice is caused by? Rhizoctonia solani
Leading state in acreage of rice? West Bengal
Maximum rice Exporter in the world is? Thailand

 

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Updated: 2019-04-17 — 2:38 pm

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