soils Flashcards

1
Q

the four layers of soils?

A

soil
subsoil
concrete
fundamental rocks

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2
Q

soil is a mixture of what

A

rock debris and organic material developed on the earth’s surface

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3
Q

what contributes maximum in the formation of soils

A

minerals

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4
Q

when was rajasthan agriculture dept estt

A

1949

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5
Q

who does the general classification on india level

A

ICAR

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6
Q

when was ICAR estt and where is its hq

A

1929 delhi

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7
Q

who does the scientific classification of soils

A

USDA
united states department of agriculture

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8
Q

ICAR divides the soils into how many parts and subparts

A

8 main 27 sub parts

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9
Q

in how many parts does the rajasthan agri commission divide the soils of rajasthan

A

14

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10
Q

how many types of soils are in the scientific classification in total?

A

12

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11
Q

out of the 12 types of soils by usda, how many types are present in rajasthan

A

5

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12
Q

name the 5 types of soils in rajasthan acc to usda

A

aridosol
antisol
alfasol
vertisol
inceptisol

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13
Q

what is the basis of classification for icar

A

colour is primary
then size of soil particles and fertility/infertility of soil

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14
Q

what is the basis of classification for usda

A

size of soil particles

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15
Q

1 sandy soil other names

A

desert soil and thirsty soil

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16
Q

1 sandy soil formation rocks?

A

sandstone
granite rocks

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17
Q

1 sandy soil extension in?

A

western desert area i.e. jaiselmer, bikaner, barmer and shekhwati (churu)

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18
Q

1 sandy soil max production crop?

A

bajra

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19
Q

1 sandy soil which crops produced

A

moti fasle
bajra
moong
moth
groundnut
gwar

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20
Q

which type of soil is max in rajasthan

A

1 sandy soil

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21
Q

why is 1 sandy soil called thirsty soil

A

coarse particles

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22
Q

which soil exudes the maximum quantity of calcium

A

1 sandy soil calcium

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23
Q

scientific name of 2 mountain soil/forest soil

A

lithosols

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24
Q

2 mountain soil/forest soil formation rocks?

A

quartzite rocks
granite rocks
gneiss rocks

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25
2 mountain soil/forest soil extension?
southern aravali i.e. udaipur, rajsamand, sirohi, ajmer
26
2 mountain soil/forest soil max production crop
maize
27
which soil is called the soil of incomplete formation
2 mountain soil/forest soil
28
other names for 3 alluvial soil
domadh jalodh deltai kachari soil
29
which soil is called the soil of flood area
deltai aka alluvial soil
30
3 alluvial soil formation by?
rivers
31
3 alluvial soil extension?
eastern plain area i.e. tonk and sawai madhopur with alwar, bharatpur, karauli and dholpur
32
3 alluvial soil production crops maximum?
wheat
33
3 alluvial soil production crops?
wheat mustard sugarcane rice medium paani wali
34
why is 3 alluvial soil most fertile?
presence of potash
35
what are the two types of alluvial soils?
bangar and khadar
36
also mains draw difference between bangar and khadar 3 alluvial soil
bangar is ancient while khadar is recent bangar is fertile but khadar is a little bit more than bangar bangar is fertile because of the high moisture retention, khadar also has but a little less thus good water capacity too bangar has good crops like wheat, gram and sugarcane which need water but khadar since also releases water is good for paddy, maize and vegetables too
37
4 black soil other names
cotton soil regur soil lava soil volcanic soil
38
4 black soil formed by?
basalt rocks i.e. the erosion of basalt lava
39
4 black soil areas?
hadoti plateau and a little bit of sgnr near ghaggar basin
40
which soil has the max water retention capacity
4 black soil
41
which type of soil needs the least irrigation
4 black soil
42
which soil is called a self ploughing soil
4 black soil
43
why is 4 black soil called self ploughing soil
after drying cracks develop in it
44
how is water logging a problem in 4 black soil
in heavy rains, water gets logged in the soil which harms crops
45
the 4 black soil is rich in which elements
calcium magnesium potassium iron
46
4 black soil main crops?
cotton imp wheat gram
47
5 red loamy soil formation by which rocks?
metamorphic rocks i.e granite, gneiss and quartzite rocks
48
5 red loamy soil extension in
banswara doongarpur pratapgarh udaipur i.e. wagad and udaipur aravalli ke neeche
49
5 red loamy soil production crops?
maize rice sugarcane
50
how are kharif and rabi crops irrigated
kharif with rainfall rabi with well irrigation trick: rab ki mehr nahi to kuan kaam aaya
51
why is the red colour of 5 red loamy soil
due to iron oxides i.e. Fe2O3
52
colour of sierozems soil
yellow brown
53
where are siezorem soil found
both sides of aravalli i.e. pali nagaur jaipur dausa
54
6 brown soil extension?
banas (max extension) luni (in western regions)
55
6 brown soil production?
all types of crops
56
7 red black soil extension
bundi bhilwara chittorgarh black soil ke aas paas aati hai
57
7 red black soil production crops?
maize cotton opium
58
8 saline soil scientific name?
solonchaks
59
8 saline soil formation
in dry or arid regions due to excess irrigation, NaCl comes to surface and makes the land saline
60
what are the names for land of 8 saline soil
reh and kallar imp
61
8 saline soil extension
ignp and narmada canal area ignp: bikaner, sgnr, hanumangarh, narmada: jalore and barmer
62
8 saline soil production crops?
sugarcane guava pomegranate blackberry jamun namak me meetha ugta hai
63
8 saline soil which fertilizers used for salinity problem
rock phosphate
64
soil: equivalant soil: climate aridosol
dry soil dry climate
65
soil: equivalant soil: climate antisol
sandy soil arid+semi arid climate
66
soil: equivalant soil: climate alfasol
alluvial soil sub humid+humid climate
67
soil: equivalant soil: climate vertisol
black soil max humid climate
68
soil: equivalant soil: climate inceptisol
red soil semi arid+humid climate
69
Draw usda soil type table
70
Draw map of usda rajasthan soil classification
71
what is erosion?
denudation of the topmost layer of soil
72
what is known as death of farmers
erosion aka moving death of soil
73
3 types of erosion
layer rain water river water
74
where in rajasthan is layer erosion observed
western raj
75
where in rajasthan is rain water erosion aka sheet erosion observed
rajsamand and sirohi
76
where in rajasthan is river water aka gully erosion observed
chambal river
77
main cause of erosion in rajasthan
wind
78
max in which distt is wind erosion in raj
jaiselmer
79
solution for wind erosion
aforestation
80
max affected place in rajasthan of water logging
badopal village of hanumangarh
81
max affected distts of water logging
hanumangarh and sgnr
82
solution for water logging
planting eucalyptus trees
83
where is 2nd bird sanctuary of rajasthan proposed
badopal hanumangarh
84
after which ph level does soil is considered alkaline
8
85
solution for alkalinity
planting gwar (beans) and dhencha (prickly sesban) and using gypsum fertilisers
86
which fertilisers are used in saline soils
gypsum and rock phosphate point to be noted is gypsum is also used for alkaline soils