418
B. Abirami and P. Kumar
964-1970
1
-1990
971
1
- 2 0 0 0
991
1
2 -2017
001
-6
-4
-2
0
2
4
6
Area
Northern and Eastern Zone
Central, Southern and Western Zone
1964-1970
-1990
971
1
9 9 1
1 -2000 2001-2017
-6
-4
-2
0
2
4
6
8
10
Production
Northern and Eastern Zone
Central, Southern and Western Zone
Graph 7 CAGR of area, production of Chickpeas in different zones
8 Determinants of Area and Yield of Chickpeas
The supply response function of chickpea can be summarised in terms of area
response and yield response as these two together determine production. For fitting
up supply response in chickpea, a least square equation model has been used for
the historical data period from 1980–81 to 2017–18. The set of area response and
yield response equations have been estimated with all possible determinants. The
specification of equations estimated are given:
(i) Area
= f (P i , P j , Rain, Irrg, Lagged)
(ii) Yield
Where
= f (P i , Rain, Irrg, Fert, Trend)
P i
Is real domestic (farm harvest) price
P j
Is real competing crop price
Rain
Is rainfall—annual rainfall as a percentage of normal rainfall
Irrg
Is percentage of area under irrigation
Fert
Is fertilizer use in kgs per hectare
Lagged
Is lagged dependent variable
Trend
Is time trend representing technology
B. Abirami and P. Kumar
964-1970
1
-1990
971
1
- 2 0 0 0
991
1
2 -2017
001
-6
-4
-2
0
2
4
6
Area
Northern and Eastern Zone
Central, Southern and Western Zone
1964-1970
-1990
971
1
9 9 1
1 -2000 2001-2017
-6
-4
-2
0
2
4
6
8
10
Production
Northern and Eastern Zone
Central, Southern and Western Zone
Graph 7 CAGR of area, production of Chickpeas in different zones
8 Determinants of Area and Yield of Chickpeas
The supply response function of chickpea can be summarised in terms of area
response and yield response as these two together determine production. For fitting
up supply response in chickpea, a least square equation model has been used for
the historical data period from 1980–81 to 2017–18. The set of area response and
yield response equations have been estimated with all possible determinants. The
specification of equations estimated are given:
(i) Area
= f (P i , P j , Rain, Irrg, Lagged)
(ii) Yield
Where
= f (P i , Rain, Irrg, Fert, Trend)
P i
Is real domestic (farm harvest) price
P j
Is real competing crop price
Rain
Is rainfall—annual rainfall as a percentage of normal rainfall
Irrg
Is percentage of area under irrigation
Fert
Is fertilizer use in kgs per hectare
Lagged
Is lagged dependent variable
Trend
Is time trend representing technology