Agri Info

 Paddy-Part 1 - Agronomy  Important Q & A for all Competitive Exams

1. Origin of paddy: South east Asia/Indo Burma.

2. Botanical name of rice: Oryza sativa

3. Family of Rice: Gramineae/Poaceae

4. Chromosome number in rice: 2n=24

5. Inflorescence of rice: panicle, which has 6 stamens.

6. Orzya sativa is evolve from Oryza nivara (2n=48)

7. Oryza sativa genome : AA

8. Rice is considered as Stable food of Asia.

9. Maximum hybrid rice cultivated in China.

10. Water requirement in rice for overall growth: 1250 mm.

11. 5000 littre water requirement to produce 1 kg rice.

12. Oryza sativa has 3 varietal types:

• Indica: grown in india, also called tropical rice

• Japonica : grown in japan, also called subtropical rice

• Javanica : grown in indonasia, wild rice

13. Lodging does not occur in japonica spp of rice.

14.Rice contains about 70% carbohydrate and 6-7% protein.

15.Rice protein is called oryzein.

16.Protein percentage in rice bran 12-15%

17.Critical stage for irrigation- Booting stage.

18.Rice field submerged in 5 cm deep water.

19.Test weight of rice 25 gm and basmati rice 21gm.

20.Fruit type is caryopsis.

21.Lemma & palea is called hull.

22.Stem of rice called as clum.

23.Rice is a self pollinated crop, C3 and short day crop.

24.Climate for rice: hot and humid.

25.Rice provides about 22% of the world’s supply of calories & 17% of the proteins.

26.In kharif, dry nursery of rice gives higher yields compared to wet nursery.

27.Lysine content in rice- 4 %

28.Seed multiplication ratio: 1:80 (Varieties) , 1:100 (Hybrids)

29.Temperature for rice cultivation-

• M inimum/base : 10-12⁰C

•  Optimum : 30-32⁰C

•  Maximum : 38-40⁰C

•  Average temp : 21-37⁰C

•  Blooming temp : 26.5-29.5⁰C

•  For ripening : 20-25⁰C

•  Panicle initiation : 20-22⁰C

  Soil Science Oneliner for all Competitive Exam

Soil Science Oneliner for all Competitive Exam

2.             Red color of red soil is due to presence of Iron oxides.

3.             Most dominant mineral present on earth crust is Feldspar (48%).

4.             Mechanical analysis of soil separation is done by Hydrometric method.

5.             Kaolinite is most dominant mineral present in Red soil.

6.             Clay soil has highest total pore space.

7.             The weight of furrow slice of soil is 2.25x 10⁶ kg/ha.

8.             Order of black soil is vertisol.

9.             The term Zero tillage is coined by Jethrotull.

10.        USA is the first country to introduce zero tillage.

11.        The microorganisms has highest biomass in soil is Fungi.

12.        National Bureau of Soil Survey and Land Use Planning is located Nagpur.

13.        Central Soil Salinity Research Institute is located at Karnal Haryana.

14.        Central soil testing laboratory is located at Patna, Bihar.

15.        B horizon is also known as illuvial horizon.

16.        A horizon is also known isElluvial horizon.

17.        O horizon is absent in Arable soil.

18.        O horizon is present in forest soil.

19.        Highest production of FYM is in Karnataka.

20.        C:N ration of micro organism is 4:1 to 9:1

21.        Ammonical fertilizers should be applied in Reduced zone.

22.        Nitrate fertilizer should be applied in Oxidized zone.

23.        Wood is mainly decomposed by Actinomycetes.

24.        The smell of soil after the fresh shower is due to Actinomycetes.

25.        Population of actinomycetes is higher in Alkaline soil.

26.        By adding organic matter Bulk density will decrease.

27.        Vermiculite is a 2:1 non-expanding type of mineral.

28.        Montmorillonite is a 2:1 expanding type of mineral.

29.        Kaolinite is a 1:1 non-expanding type of mineral.

Sunhemp is most outstanding green manure crop.

Soil Science Important One liner for all Competitive Exams

1. Wheat is an indicator plant for copper.
2. The density of soil water is maximum at 4⁰c.
3. Organic carbon content in soil average 0.5- 0.7%
4. Available nitrogen-(240-280kg/ha).
5. Available phosphorus- (11-22 kg/ha).
6. Available potassium- (110-280 kg/ha).
7. Available sulphur-(6-16 ppm).
8. Enrichment of water bodies by nutrients and consequent bloom of algal and other aquatic plants is termed as ‘Eutrophication’.
9. Particle density of Alluvial soil is 2.55 gm/cm³.
10. Macro and Micro spore ratio should be 1:1 in soil.
11. Fertilizer control order 1985.

12. Marshy soil are generally deficient of Zn.

13. Downward movement of nutrients and salts from the root zone with water is known as ‘Leaching’.
14. A vertical section of soil through all its horizons is called ‘Soil Profile’.
15. ‘A’ horizon is also known as Fertile horizon.

16. The smallest volume of soil is called as pedon.

17. A+B horizons are together called as ‘Solum’.
18. A+B+C horizons are together called as ‘Regolith’.
19. The arrangement of primary particles of the soil is known as ‘Soil Structure’.
20. The relative proportion of sand, silt and clay particles is termed as ‘Soil Texture’.
21. Newly formed alluvial soil is called as ‘Khadar’.
22. Old alluvial soil is termed as ‘Bhangar’.
23. Soil moisture content is determined by ‘Tensiometer’.
24. A mass of rotted organic matter made from waste is called as ‘Compost’.
25. Peaty soils are generally deficient of Cu

 Agricultural Economics Important Oneliner

1. Family is basic unit of Civilization

2. Village is the basic unit of rural : Society

3. Cooperative movement was started in India : 1904

4. Father of Co-operative movement in India was : F.Nicholson

5. In farm production capital is the: Passive Factor

6. Labour in the farm management  is an Active Factor

7. The agricultural product act was passed in: 1937

8. AGMARK established in the year : 1937

9. Planning Commission established in: 1950, March

10. VAT (Value Added Tax) is an : Indirect Tax

11. Agriculture year : 1st June to 31st March

12. Financial Year : 1st April to 31st March

13. Demand for luxurious good is : More elastic

14. Demand for necessary commodities is: Inelastic

15. One of the important fixed cost on farm is : Land rent 

16. The demand of agricultural products in general is : Inelastic

17. The price elasticity of demand for Food is : Relatively inelastic

18. Indian economy is concerned with : Mixed

19. Risk is minimized in : Diversified farming

20. Short term credit facillity is given for the purpose of : Crop production