Table 7.

Average dose (kg or l ha⁻¹ spray⁻¹) of active ingredient among rice–fish (RF) and rice (R) farmers in Cai Be and rice (R) farmers in LSWR

	Type of farmer
	Cai Be		LSWR
	RF	R	R
Insecticides
Mean	0.10a	0.55ab	0.36b
SD	0.13	1.50	0.52
Herbicides
Mean	0.26	0.44	0.40
SD	0.48	0.25	0.46
Fungicides
Mean	0.59	0.54	0.82
SD	0.67	0.43	0.57
Molluscicides
Mean	0.43	0.63	0.72
SD	0.24	0.57	2.11
Total
Mean	1.38	2.16	2.31
SD	0.97	1.82	2.62

Means within the same row that do not share the same superscript letter are significantly different (P < 0.05)

RF farmers cultivating rice and farming fish, R farmers cultivating only rice