Agriculture Reference
In-Depth Information
UDP*
Broadcast**
Incremental yield
8000
7000
6000
5000
4000
3000
2000
1000
0
*Selected “best practice” fields using 78 kg N ha
−1
applied by deep placement method
**Selected “best practice” fields using 115 kg N ha
−1
applied by broadcast method
FIGURE 3.15
Rice yield increases resulting from FDP technology in Africa. (From IFDC.
2013b.
Fertilizer Deep Placement
. International Fertilizer Development Center, Muscle
Shoa ls, A L.)
While FDP has been used primarily on rice, initial field trials indicate the tech-
nology is applicable to upland vegetables. In Bangladesh, field trials with cabbage,
cauliflower, tomato, and eggplant show a 20%-30% yield increase with a 10% reduc-
tion in N fertilizer use (Figure 3.16).
The potential for rapid diffusion and impact of this technology is significant. For
example, in India, the total area under rice cultivation is 43 million ha. If 10% of the
70
400
Urea rate in kg ha
−1
300
450
60
330
440
50
600
40
UDP
270
30
Prilled
urea
300
20
10
0
Cabbage
Cauliflower
Tomato
Eggplant
FIGURE 3.16
Comparison of yields and fertilizer use on vegetables. (From IFDC. 2013b.
Fertilizer Deep Placement
. International Fertilizer Development Center, Muscle Shoals AL.)
