Agriculture Reference
In-Depth Information
constrains the use of yield-enabling technology components under specific environ-
ments. It is therefore very difficult to bridge yield gap II. Biophysical factors such
as weather, soil, water, pest, weeds, management practices, variety and seed selec-
tion, nutrients, postharvest management etc.; farmers' traditions and knowledge;
government policy; seed price; input supply; market; extension; and research are
responsible for the yield gap I. Saharawat (2009) carried out a management yield gap
analysis in cereal crops across the Indo-Gangetic plains given in Table 5.1 to identify
technological interventions for productivity improvements.
TABLE 5.1
Management Yield Gaps in Rice-Wheat and Maize Crops in the
Indo- Gangetic Plains
Simulated
Potential Yield
(t/ ha), A
Max Attainable
Exper. Yield
(t/ ha), B
Average
Yield
(t/ ha), C
Management
Yield Gap I (%),
[100(B − C)/B]
Cereal
Crops
Hub Name
Punjab
Rice
8.8
7.0
4.0
43.1
Wheat
6.5
5.2
4.3
17.3
Maize
16.6
13.3
3.1
77.0
Haryana
Rice
8.7
7.0
2.8
59.9
Wheat
5.6
4.5
3.8
14.2
Maize
8.0
6.4
2.8
56.9
Eastern Uttar
Pradesh
Rice
7.2
5.2
3.8
26.9
Wheat
5.4
4.6
2.4
47.4
Maize
6.3
4.3
1.2
72.2
Bihar
Rice
8.7
7.0
2.1
70.5
Wheat
5.5
4.4
2.3
47.7
Maize
10.7
8.6
2.6
69.6
Nepal
Rice
7.2
5.4
3.3
38.9
Wheat
5.4
5.0
2.9
42.8
Maize
6.3
4.3
2.6
39.5
Bangladesh
Rice (boro)
9.0
7.2
5.9
18.1
Rice (aman)
7.0
5.6
2.7
51.8
Wheat
6.0
4.8
2.5
47.9
Maize
16.5
13.2
8.4
36.4
Source:
Rainfall: Indian Meteorological Department (
http://www.imd.gov.in/).
Actual yields: SDDS-
DES, Ministry of Agriculture, Government of India and AGRID-NIC, Ministry of
Communications and Information Technology, Government of India; Regmi and Ladha (2005);
Saharawat (2009); Personal communications from the CSISA hub managers; Chand, R., S.
Garg, and L. Pandey. 2009. Regional Variations in Agricultural Productivity: A District Level
Study. Discussion Paper No. NPP 01/2009. New Delhi: National Centre for Agricultural
Economics and Policy Research.
Note:
Boro rice is winter rice and aman rice is rice of the rainy season.
