Table 5.8 Household level maize production characteristics in Yen Chau district, differentiated by household absolute and relative poverty status
(N in parentheses)
Average Across Non-drought
Years 2006–2009
Whole sample
(N
¼ 891)
Absolute poverty
Relative poverty
Poor
(N
¼ 183)
Non-poor
(N
¼ 708)
Sign. level
of diff.
Poorest tercile
(N
¼ 297)
Middle tercile
(N
¼ 294)
Wealthiest tercile
(N
¼ 300)
Sign. level
of diff.
Area planted (ha)
1.27
1.41
1.23
*
1.33
a
1.05
b
1.43
a
***
Fertilizer input (kg ha
À1
)
1,004
676
1,091
***
i
747
a
1165
b
1114
b
***
Yield (Mg ha
À1
)
7.38
5.58
7.86
***
6.13
a
7.81
b
8.22
b
***
Gross margin (million
VND ha
À1
)
20.74
16.51
21.85
***
17.01
a
19.72
b
25.36
c
***
Drought Year 2010
(N
¼ 294)
(N
¼ 59) (N
¼ 235)
(N
¼ 96)
(N
¼ 98)
(N
¼ 100)
Area planted (ha)
1.23
1.38
1.19
n.s.
1.27
a
0.97
b
1.43
a
**/***
i
Fertilizer input (kg ha
À1
)
978
720
1,044
***
845
a
1077
b
1013
b
**/*
ii
Yield (Mg ha
À1
)
6.31
5.59
6.49
**
6.22
a
6.39
a
6.30
b
*
Gross margin (million
VND ha
À1
)
24.35
22.83
24.74
n.s.
23.50
a
20.72
a
28.42
b
*/***
iii
*(**)[***] Differences statistically significant at the 10 % (5 %) [1 %] level of error probability based on Mann–Whitney tests, accounting for family-wise
error in the case of a three-group comparison: (i) Difference between poorest and middle tercile significant at 5 % level; difference between middle and
wealthiest terciles at a 1 % level. (ii) Difference between poorest and middle terciles significant at a 5 % level; difference between poorest and wealthiest
terciles at a 10 % level. (iii) Difference between poorest and wealthiest terciles significant at a 10 % level; difference between middle and wealthiest terciles at
a 1 % level
202
C. Saint-Macary et al.