Agriculture Reference
In-Depth Information
the opportunity cost of capital for farmers. This rate is estimated at 10% by deduct-
ing the inflation rate of 4% from the average nominal interest rate of the loans for
agricultural production (14%) in the banking system. The effect of other discount
rates is assessed in the sensitivity analysis.
11.4.7 Yields
The common and popular cash crops of rice and wheat are considered for seasonal
culture. For agroforestry, the multi-strata system of litchi, ginger, turmeric, egg-
plant, lemon, papaya, and banana is considered. Eggplant, papaya and banana are
intercropped with litchi only for the first 4 years, and lemon is for first 6 years.
After that time shade tolerant ginger and turmeric are intercropped. Yields of litchi
are calculated under three categories, (1) low yields during the fourth to sixth year,
(2) medium yields during the seventh to tenth year, (3) high yields from the elev-
enth year onwards. Table 11.3 gives the overview of the yield in both systems.
11.4.8 Time Horizon
A period of 30 years has been taken as the time horizon for present analysis.
Table 11.3
Yearly average yields of the litchi-based multistrata agroforestry system and the rice/
wheat seasonal cropping system in Rajshahi district, Bangladesh. For both the agroforestry and
the seasonal culture columns, yearly totals are the full column for the given years (second
column)
Name of variety
Year
Average yields
Selling price
(species)
(ha
-1
year
-1
)
(US$ year
-1
)
Multistrata
agroforestry
Seasonal culture
Rice
1-30
-
6,600 kg
1,064
Wheat
1-30
-
2,400 kg
646
Eggplant
1-4
8,000 kg
-
304
Papaya
1-4
49,419 kg
-
1,901
Banana
1-4
92,640 piece
-
1,140
Lemon
1st
37,064 piece
-
570
2nd
111,193 piece
-
1,711
3-6
247,096 piece
-
3,801
Ginger and
7-30
5,400 kg
-
2281
turmeric
Litchi
4-6
74,100 piece
-
1,140
7-10
123,741 piece
-
1,904
11-30
617,741 piece
-
9,504
Search WWH ::
Custom Search