Monday, November 6, 2017

IN-P

INDIAN AGRICULTURE – AN

INTRODUCTION

                             
Agriculture in indian economy supports almost 17 per cent of world population from 2.3 per cent of world geographical area and 4.2 per cent of world’s water resources. 

The economic reforms, initiated in the country during the early 1990s, have put the economy on a higher growth trajectory. Annual growth rate in GDP has accelerated from below 6 percent during the initial years of reforms to more than 8 percent in recent years.

This happened mainly due to rapid growth in non-agriculture sector. 

The workforce engaged in agriculture between 1980-81 and 2006-07 witnessed a very small decline; from 60.5 percent to 52 percent.

The net sown area is 142 Mha. The net irrigated area was 58.87 Mha in 2004-05. Presently, the total net irrigated area covers 45.5 per cent of the net sown area, the remaining 54.5 per cent is rainfed. 

The degradation of land and surface as well as ground water resources results in fast deterioration of soil health. 

The storage, transportation, processing, value addition and marketing of farm produce need to be improved to enhance household food, nutrition and livelihood security.

Indian agriculture is characterized by agro-ecological diversities in soil, rainfall, temperature, and cropping system. 

Besides favorable solar energy, the country receives about 3 trillion m of rainwater, 14 major, 44 medium and 55 minor rivers share about 83 per cent of the drainage basin. 
About 210 billion m3 water is estimated to be available as ground water. Irrigation water is becoming a scarce commodity. Thus proper harvesting and efficient utilization of water is of great importance.

Average size of farm holdings gradually reduced from 2.58 ha to 1.57 ha (Table 1). Small and marginal farmers have limited resources especially in rain-fed regions where only animate power is used resulting in low productivity. 

Though agricultural production is high, the per hectare productivity is much lower than world average. There is an urgent need to increase productivity.




Smaller the farm, greater is the need for marketable surplus, so that small farmers can have a reasonable income. Achieving this goal will be possible only if we develop and disseminate eco-technologies rooted in the principles of ecology, economics, gender equity and employment generation. This is the pathway to an “ever-green revolution” in agriculture. The estimated food requirement in India and total production of major crops indicate that to keep pace with the present population growth and consumption pattern, food grain requirement has been estimated to be 240 MT by 2020 and 300 MT by 2025. Annual agricultural growth should be maintained at 6.7 per cent to meet these demand projections.



Non-availability of manpower during peak crop season is many times a problem. The overall achievement in the creation of irrigation facilities has been relatively better in India with 63 per cent growth rate compared to the world average. There is a need to increase the utilization of rainwater to enhance the gross cropped area by 30 Mha as the yield of food grain in irrigated areas is almost twice that in rain-fed agriculture. Per capita availability of food grains has declined from 510 g per day in 1990 to 436 g in 2003 and this trend has to be arrested. The infrastructure for agricultural diversification, reducing post harvest losses of perishables, value addition to agro-produce and branding system needs to be strengthened.

Agricultural Production and Productivity

The nation is striving to find ways and means to keep its burgeoning population adequately fed. On the one hand it is facing the problem of declining productivity and on the other, challenges posed by liberalization. In such a scenario, leveraging the available natural resources and existing infrastructure is the only way to make the ends meet. Management of the already built infrastructure in harmony with natural systems is the clarion call of the day. Knowledge of the extent of existing infrastructure and natural resources is one of the most basic pre-requisites to utilize them effectively and in a sustainable manner. The discipline of agricultural engineering endeavours to develop technologies for enhancing productivity and




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reducing the cost of cultivation. Traditionally animate power was used for field operations and processing activities. As a result of introduction of mechanical power, agricultural engineering activities have expanded considerably. To sustain the project population of 1.363 billion by 2025 the productivity has to be increased by 100 per cent from the present level by intensification of agriculture. It is estimated that the energy input to agriculture would have to be increased form the present level of 1.3 to 2.4kW/ha.

The constraints of low productivity in agriculture were realized and thus, central and state governments emphasized the need for accelerated development of agriculture. Adoption of high yielding varieties by farmers coupled with the use of higher doses of fertilizer and assured irrigation through tube wells accelerated the pace of progress in agriculture. As a result of adoption of improved inputs and management practices, the total food grain production increased from a mere 50.8 million tonnes in 1950-51, to 212 million tonnes in 2006-07 and productivity increased from 522 kg/ha to more than 1707 kg/ha (Table 2). The productivity of wheat, rice and oilseeds increased to a greater extent than other crops. The increase in production of food grain was possible as a result of adoption of quality seeds, higher dose of fertilizer and plant protection chemicals, coupled with assured irrigation. The growth in production of fruits (46 million tonnes), vegetables (91 million tonnes), milk (81 million tonnes), fish (57 million tonnes) has also increased. As a result, not only the country has achieved self-sufficiency in foods but have adequate agro-produce for export. Our agriculture is now at the crossroads (Table 3). The use of certified/quality seeds by the farmers has increased to 700,000 tonnes. The fertilizer consumption has increased to 21.65 million tonnes (more than 112.69 kg/ha) in 2006-07 from 0.29 million tonnes in 1960-61. It increased at an annual growth of 11.7 per cent. The use of technical grade plant protection chemicals has increased to 56.11 thousand tonnes (0.4 kg/ha) from a meagre of 8.62 thousand tonnes in 1960-61.

Crop and site specific agricultural mechanization and agro-based small and medium enterprises in rural sector using a proper blend of conventional and renewable energy sources will facilitate in enhancing agricultural productivity and profitability resulting in higher income for farmers and better quality of life.






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Crop

2000-
2001-
2002-
2003-
2004-
2005-
2006-07


01
02
03
04
05
06
(Provisional)
Oilseeds
Production
18.44
20.66
14.84
25.29
26.10
27.98
23.26

Yield
810
913
691
1067
967
1004
895
Sugarcane
Production
295.96
297.21
287.38
237.31
232.32
281.17
322.94

Yield
68577
67370
63576
58986
63806
66828
66833
Pulses
Production
11.08
13.37
11.13
14.91
13.13
13.39
14.11

Yield
544
607
543
635
577
598
594
Coarse
Production
31.08
33.38
26.07
37.60
33.47
34.07
32.92
cereals
Yield
1027
1131
966
1221
1153
1172
1158

Milk MT
Production
80.60
84.40
86.20
88.1
92.6
97.1
100..9
Fish
Production
5.66
5.96
6.20
6.40
6.30
6.57
6.87
Irrigated area, Mha
75.95
78.81
75.87*
77.94*
78.00*
80.00*
82.63*
Fertiliser

13.88
17.36
16.09
16.80
18.34
20.34
21.65
consumption MT







Per capita availability
495.50
416.20
494.10
437.6
462.7
422.4*
445..3
of food grains







(gms/day)



















































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Table 3 Global ranking of India in farm production and productivity
Crop
Production rank
Productivity rank
Paddy
2nd
30th
Wheat
2nd
22nd
Maize
7th
35th
Total cereals
3rd
36th
Groundnut
2nd
40th
Rapeseeds
3rd
28th
Pulses
1st
44th
Potato
4th
26th
Fruits
2nd (10 per cent
-

share)

Vegetables
2nd (9 per cent
-

share)



Farm mechanization

Mechanization is viewed as package of technology to (i) ensure timely field operations to increase productivity, reduce crop losses and improve quality of agro-produce (ii) increase land utilization and input use efficiency (iii) increase labour productivity using labour saving and drudgery reducing devices besides, being cost effective and eco-friendly. Appropriate machinery have been adapted by farmers for ensuring timely field operations and effective application of various crop production inputs utilizing human, animal and mechanical power sources. Diverse farm mechanization scenario prevails in the country due to size of farm holdings (average farm holding size 1.6 ha) and socio-economic disparities. Indian agriculture continues to be dependent upon human (agricultural workers population 234.10million in 2000-

1)        and draught animal power (27 million pairs). Hand tools and animal drawn implements are extensively used which involve a great amount of drudgery. Adoption of tractors has been on the increase. Sale of tractors during 2005-06 touched 292000 nos.

Mechanization indicator is one of the measures of modernization of agriculture of a country (Table 4). The availability of farm power or energy per unit area (kW/ha) has been considered as one of the parameters for expressing level of mechanization. Ratio of machine work and sum of manual and machine work has also been considered to estimate the level of mechanization. The unit farm power available from all sources (animate and mechanical power) increased from 0.20 to 0.90 kW/ha (on the basis of net cropped area) from 1950-51 to 1996-97. The ratio of tractive power to total farm power has increased from 0.82 to 32.25 per cent.

Table 4
Level of mechanization

Sl. No.
Operation
Percentage
1
Tillage
40.2

Tractor
15.6

Animal
24.7
2
Sowing with drills and planters
28.9

Tractors
8.3

Animal
20.6





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3
Irrigation
37
4
Thresher- Wheat
47.8

Paddy and others
4.4
5
Harvesting


Reapers
0.56

Combines
0.37
6
Plant protection
34.2

A number of machines and equipment suitable for different farm operations suited to different agro-climatic regions and categories of farm have been developed and tested (Table-5). Most of these machines are available commercially and have been well adopted.

Table 5 Present Status of mechanization in Farm Mechanization
Technology


Present Status

Land Development




Land
levelling
and
Bull  dozers,  power  rakes,  land  planes  etc.  are
grading




commercially available.  Animal drawn and
tractor





levellers are available for wetland and laser land leveller





for large scale levelling.

Summer
ploughing
and
Tractor drawn mould board ploughs, disc plough and
subsoiling



subsoilers, para plough are available commercially.
Seedbed
preparation
-
T/M strip till drill, roto till drill and zero till seed cum
conservation
tillage
fertilizer drill field, till planter tested in light soils of
seeding
raised
bed
northern India and found useful for sowing of wheat.
planting






Seedbed
preparation
-
Tractor mounted mould board, disc ploughs, disc
Flat bed




harrows, cultivator etc are available commercially and





being used by the farmers. Adoption of T/m rotavator is





increasing.

Seedbed
preparation
-
Good designs of A/d and T/d puddlers, levellers, hydro
low land




tiller and rotavator are available commercially.

Pit making



Tractor mounted augers were imported and tested. Few





indigenous designs of tractor and power tiller mounted





augers were developed and commercialized.

Manure application


Manual spreading and transportation through tractor is





practised. Power tiller and tractor-operated designs are





ready for commercialization.

Sowing and Planting



Drilling




Animal  draw,  Tractor  mounted  and  Power  tiller





operated seed drills, seed cum fertilizer drill
are





available

Planting/hill planting/

Dibblers, inclined plate planters and pneumatic plate
Precision drill


planters are available

Planting
of
tubers
and
Potato planters of animal, tractor and power tiller
rhizomes



mounted are available.

Weeding and Interculture

Manual
weeding
and
Tools are available commercially; grubber, twin wheel
earthing




hoe, cono weeder are common on Indian farms.






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Technology



Present Status



Power weeders



Developed and tested.
Rotary power weeder has been






adopted in different agro-climatic regions.

Power
tiller
operated

Developed and tested.
Power tiller mounted cultivator,
cultivation and earthing

power tiller mounted earthing cum fertilizer is under






promotion in sugarcane crop.




Tractor

mounted

Commercially available





cultivator and earthing









Plant Protection








Manual sprayers

Commercially available on large scale



Manual dusters











Animal

operated

Few commercial models are available.
Bullock drawn
sprayers




sprayer for soybean and cotton is being promoted.
Engine

operated

Many models are available




sprayers and dusters









Self
propelled
sprayers

High capacity sprayers are commercially available.
and dusters











Power
tiller
operated

Few
models
developed
by
R&D
Centres.
sprayers and dusters

Commercialised in Andhra Pradesh, Tamil Nadu and






Maharasthra. Power tiller operated orchard sprayer with






turbo nozzle has been commercialised.



Tractor

mounted

Commercially
available.  Few
imported models field-
sprayers and dusters

tested and adopted by farmers. Aeroblast sprayers are in






use for horticultural crops.




Air
assisted
spraying


Manual and tractor mounted equipment have been
and dusting



developed/adopted





Harvesting & Threshing








Manual sickles



Locally made available at large scale.

With serrations






many designs are available for commercialization
Reaper-windrowers
Walk behind type models were designed, developed,
Walking type



tested and commercialised




Riding type



Prototypes available










Power tiller mounted
A platform type reaper made and tested





Tractor mounted
A number of models are being manufactured on large






scale.  Now again its scope is increasing due to the






requirement of wheat and rice straw for fodder pin poses.
Groundnut diggers
Animal drawn, power tiller mounted and tractor mounted






diggers are available.





Potato
diggers/sweet
Animal drawn, Tractor mounted semi and automatic
potato harvesters
potato diggers developed and tested.
Power tiller






mounted potato digger is available.



Power threshers
Commercially available. Threshers for sunflower, maize,
Specialized threshers
groundnut, castor etc. have been developed.

Multicrop thresher
Small and high capacity threshers developed and tested






for rice, wheat, mustard, sunflower, safflower, sorghum,






maize, pigeon-pea etc.






Combine harvesters - Commercially available rice






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Technology
Present Status
General
purpose
grain

Commercially available
combine




Straw combine


Commercially available for wheat
Plot combine


Limited scope. Imported models are available



Noise and Vibration on

Studies have been carried out which indicate that
tractors
and
power

operators of these power units are exposed to high level
tillers



of noise and vibration, which are detrimental to health




and work performance.



Modernization requires sophistication in mechanization, which is possible at relatively large scales of operations with capital and management constraints overcome. Marginal and small farmers are increasingly becoming part time, with absentee farmers, periurban farmers, wage earners on a part or full time basis. Industry and service sectors, trade and commerce unable to reduce land based livelihoods compel rural people to remain on land based livelihoods, forcing a steady increase in the number of land holdings but with average land holdings going down making mechanization more challenging and difficult. Scaling down of farm machines reduces mechanical advantages. Instead of owning farm machinery other than hand tools, such marginal farms can meet their needs through custom servicing. (if it is well developed).

Farm Power Availability

India has made remarkable progress in agricultural mechanization technology. The country evolved a selective mechanization model using a power mix based on animate and inanimate power sources. The mix of power sources includes human beings, animals, power tillers, tractors, engines and electric motors. One of the globally used Index of Agriculture Mechanization (IAM) is power availability per unit area. The power availability is computed by taking both animals and inanimate power sources. Nearly 80 per cent of the power in agriculture is contributed by inanimate power sources. Table 6 shows the farm power availability and density of different power sources in India. Table 8 shows the farm power availability versus food grain production. It is apparent from these tables that agricultural productivity is directly related to farm power availability. States with higher power per unit area also have higher food production (Table 7). It is evident that higher power availability will have to be ensured in the states with lower power availability. This is also true for rainfed areas, where the power availability is barely 0.54 kW./ha. The power availability in hilly areas is also quite low.

The increasing use of tractors and irrigation pumps operated by electric motors and diesel engines are the indictors of the fact that use of mechanical power in India has increased many fold during the last two decades. Power availability was 0.32 kW/ha in 1965-66 and increased to 1.34 kW/ha in 2005-06 and needs to be increased to 2 kW/ha. The cultivable area per tractor was 2162 ha in 1965-66 and has come down to about 50 ha per tractor in 2005-06 with the addition of a large number of tractors. However, it is seen that the most popular model of tractor has a rating of 35 hp, which has a command area of about 15-20 ha.







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Table 6
Status of farm power sources in India


Sources
Unit
1960-
1970-
1980-
1990-
2000-
2004-


61
71
81
91
01
05
Agricultural
Number,
116.0
124.2
149.3
183.5
214.9
227.7
workers
million







Power,
5.8
6.2
7.5
9.2
10.7
11.4

mkW






Draft
Number,
80.4
82.6
73.4
70.9
60.3
56.5
animals
million







Power,
30.6
31.4
27.8
26.9
22.9
21.5

mkW






Tractors
Number,
0.037
0.168
0.531
1.192
2.472
2.812

million







Power,
1.00
4.38
13.86
31.11
64.52
73.39

mkW






Power
Number,
0
0.096
0.0162
0.0312
0.0775
0.0783
tillers
million







Power,
0
0.054
0.0196
0.175
0.434
0.438

mkW






Diesel
Number,
0.230
1.700
2.880
4.800
6.226
7.595
engines
million







Power,
1.298
9.52
16.13
26.88
34.86
42.53

mkW






Electric
Number,
0.200
1.600
3.350
8.070
13.250
14.467
motors
million







Power,
0.74
5.92
12.39
29.86
49.03
53.53

mkW







1 Human = 0.05 kW, Draught animal pair = 0.38 kW, Power tiller = 5.6 kW; Tractor = 26.1 kW, Electric motor = 3.7 kW, Diesel engine = 5.6 kW.

Table
7 Cultivated area, production and power availability in India.
Year

Croppi
Net
Gross
Irriga
Producti
Net sown
Power


ng
sown
sown
ted
vity
area per
availabil


intensit
area
area
area
T/ha
tractor
ity,


y
Mha
Mha
Mha

ha
kWha


( per








cent)






1980-

124
140.3
173.3
38.7
1.023
264
0.55
81








1985-

127
141.0
178.8
42.1
1.184
174
0.73
86








1990-

130
142.2
185.5
48.0
1.468
119
0.87
91








1995-

131
142.8
186.8
53.0
1.499
84
1.05
96








2000-

131.6
141.2
185.7
54.83
1.630
57
1.29
01








2004-

135.6
141.0
191.2
56.21
1.650
50
1.44
05













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Table 8
Farm Power availability and average productivity of food grains in
India in 2001



State

Farm Power availability,
Food grain productivity,


kW/ha
kg/ha
Punjab

3.50
4032
Haryana

2.25
3088
Uttar Pradesh

1.75
2105
Andhra Pradesh
1.60
1995
Uttranchal

1.60
1712
West Bengal

1.25
2217
Tamil Nadu

0.90
2262
Karnataka

0.90
1406
Kerala

0.80
2162
Assam

0.80
1443
Bihar

0.80
1622
Gujarat

0.80
1169
Madhya Pradesh
0.80
907
Himachal Pradesh
0.70
1500
Maharashtra

0.70
757
Rajasthan

0.65
884
Jharkhand

0.60
1095
Jammu
&
0.60
1050
Kashmir



Orissa

0.60
799
Chhattisgarh

0.60
799
All India

1.35
1723

Irrigation


Water is an essential natural resource for the survival of life, a key input for plant growth and is instrumental in the upkeep of the environment. Although water is a renewable source, it is quite dynamic and scarce. The source of all water is annual precipitation/rainfall and it is affected by a number of factors. As a result, rainfall in India is highly variable, irregular and undependable with widespread variation among various meteorological sub-divisions in terms of distribution and amount. The highest and lowest annual average rainfall in India is 10,000 mm (Khasi-Jaintia Hill, Meghalaya) and 100 mm in Rajasthan, respectively. The distribution of water is highly skewed and to make it better the technical feasibility of inter basin transfer of water by linking Himalayan and Peninsular rivers has been investigated and the proposal is under consideration of the Government of India. It is estimated that after the development of full irrigation potential of 140 million ha as against the cropped area of 200 million ha by the year 2010, about 60 million ha will be left as rainfed. It, therefore, demands that every drop of rainfall should be conserved and it can be done by in-situ and ex-situ harvesting of rainfall. Significant progress has been made in the development of water harvesting, conservation and utilization technology. For better water use efficiency, it is necessary to adapt efficient irrigation methods that are technically feasible, economically viable and socially acceptable. Drip and micro irrigation systems need to be adopted and popularized for row crops, horticulture and especially for widely spaced high value crops in undulating terrains, shallow and porous soils and in water scarce areas. However, the associated issues/problems of

IN-P

INDIAN AGRICULTURE – AN INTRODUCTION                               Agriculture in indian economy supports almost 17 per cent ...