AAPI 7th Quarterly Report Apr-June 2012 - AAPI (Accelerating ...

Results of UDP Rice demonstrations – Table 16 provides the crop cuts results by variety for
346 demonstrations. There were another 29 demonstrations with other varieties of local interest. Many
were “Indian” varieties and their data is not reported. The 15-16% yield increase from UDP is
consistent with the crop cut data from farmer fields (Table 10).
Table 16. Effect of N-Fertilizer Applied as Broadcast Urea or UDP on the Grain Yield (kg/ha)
of Different Rice Varieties Grown in Boro, 2012 (Demo)
Yield (Kg/ha)
Yield difference
No. of
UDP (Guti Urea)
Broadcast Urea
Cultivars (Varieties
demonstrations
Coefficient of
Coefficient of
Average
Average
Variation
Variation
Kg/ha %
BRRI dhan 29 114 7579 10.354 6522 11.064 1,057 16%
BRRI dhan 28 168 6876 11.411 5956 13.896 920 15%
BRRI dhan 47 20 6465 11.612 5560 14.510 905 16%
BINA dhan 8 11 6484 16.171 5715 14.441 769 13%
Hybrids 33 7911 11.717 6804 13.941 1,107 15%
Table 16 shows that hybrid varieties produced the highest yield (7,911 kg/ha) followed by
BRRI dhan 29 (7,579 kg/ha), BRRI dhan 28 (6,876 kg/ha), BINA dhan 8 (6,484 kg/ha) & BRRI dhan
47 (6,465 kg/ha), when N-Fertilizer was applied as Guti deep placement (UDP). A similar trend of
grain production was also observed with broadcast application of Urea. In terms of yield difference
between the Guti Urea and Broadcast Urea the maximum difference was observed with Hybrid
followed by BRRI dhan 29, BRRI dhan 28, BRRI dhan 47 and BINA dhan 8. It is revealed from the
ANOVA that except BINA dhan 8, the variation of the grain yield of each individual variety is higher
when N-fertilizer was applied as broadcast urea. This would indicate a more uniform application (and
availability on N for the plant) when it is applied as guti urea.
The demonstration data was also used to look at the influence of Nitrogen fertilizer application
on such parameters as crop duration, fertilizer use and cost. Table 17 shows there was no difference in
duration of different varieties arising from type of N-fertilizer used. There were significantly higher
amount of N fertilizer (124 kg/ha) applied as broadcast urea; also significantly higher cost incurred
when N fertilizer was applied as Broadcast urea. It is showing that the deep placement of Urea will
reduce the fertilizer cost substantially (Tk. 2,105/ha) which is a financial benefit for the rice farmers;
the application of N-Fertilizer using Urea deep placement significantly increases the grain yield (973
kg/ha) of paddy over the broadcast application. It is evident from the data that UDP gives in the order
of one ton higher yield than that of broadcast urea and this difference is statistically significant. This
can be compared with 924 kg/ha (for HYV varieties) recorded from crop cuts in farmer’s field.
Appendix 11 provides the yield data by Upazila.
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