Influences of Agrochemicals on Health and Ecology in Vietnamese Mango Cultivation
Table 4
The number of chemical fertilizers in mango cultivation in southern Vietnam.
Items
Season 1
Season 2
Season 3
Non-coop. (n = 361)
Coop. (n = 285)
t -test
Non-coop. (n = 415)
Coop. (n = 262)
t-test
Non-coop. (n = 292)
Coop. (n = 271)
t -test
Root fertilizer
N (kg)
294.9
215.1
251.0
189.0
ns
49.2
146.7
P (kg)
201.5
159.0
ns
190.0
130.0
ns
43.4
116.8
K (kg)
171.3
163.2
ns
163.1
161.5
ns
35.7
99.1
Microelements (gr)
27.9
35.7
ns
5.7
82.9
ns
0.5
40.9
ns
Leaf fertilizer (liquid) for flowering stimulation
N (kg)
8.0
7.5
ns
8.1
6.0
6.4
4.6
P (kg)
2.8
1.0
2.6
0.7
2.5
0.5
K (kg)
13.1
13.1
ns
12.3
10.4
ns
8.5
8.7
ns
Microelements (gr)
58.4
37.5
ns
124.6
52.8
110.5
61.2
ns
Source: Field Survey Data, 2018. Unit: kg/ha. Significant at the 10% level, significant at the 5% level, significant at the 1% level, and ns: nonsignificant.
