Residues resulting from supervised trials

Data from many supervised trials on citrus fruits, broccoli, Brussels sprouts, head cabbages, cauliflowers and tomatoes were submitted or resubmitted to the Meeting. However some reports lacked important information such as recovery data or representative chromatograms. The Meeting did not evaluate trials which lacked data on analytical recoveries or in which recoveries were below 70%, or trials with abnormally high residues in control samples and for which no representative chromatograms were supplied. In such cases it was not clear whether the control samples were contaminated or the analysis was at fault.

Trials which were unsuitable for evaluation are shown shaded in the Tables.

Residues in crops

Citrus fruits. Thirteen supervised trials were carried out in Argentina (lemons), Brazil (sweet oranges), Greece (sweet oranges), Japan (Satsuma mandarins, sour oranges, Yuzu (i.e. lemons and limes), and Natsudaidai) and New Zealand (clementines). The results are shown in Table 3.

Table 3. Residues of acephate in citrus fruits.

Crop, country, year	Application				PHI, days	Residues1		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Lemon Argentina 1995	SP	1	0.88	0.13	10	<0.1		662
					31	<0.1
Orange Brazil 1994	SP	2	1.23	0.056	14	0.2		70
					21	0.2
					28	0.1
		2	2.46	0.11	14	0.5
					21	0.3
					28	0.1
Orange Greece 1995	SP	2	1.2	0.031	20	0.23	0.05	67
Satsuma mandarin Japan 1992	WP	3	2.5	0.05	30	0.628(F)	0.068(F)	493
						0.50(P)	0.09(P)
						0.60(W)	0.07(W)
					45	0.584(F)	0.052(F)
						0.41(P)	0.05(P)
						0.55(W)	0.05(W)
					60	0.564(F)	0.037(F)
						0.22(P)	0.02(P)
						0.50(W)	0.03(W)
Satsuma mandarin Japan 1992	WP	3	2.5	0.05	30	1.22(F)	0.102(F)	483
						0.68(P)	0.14(P)
						1.12(W)	0.11(W)
					45	0.992(F)	0.062(F)
						0.44(P)	0.06(P)
						0.88(W)	0.06(W)
					60	0.623(F)	0.034(F)
						0.17(P)	0.02(P)
						0.52(W)	0.03(W)
Sour oranges Japan 1993	WP	3	2.5	0.05	30	0.134	0.031	45
					45	0.016	<0.005
					60	0.012	<0.005
Yuzu Japan 1993	WP	3	2.5	0.05	30	0.546	0.044	55
					45	0.261	0.019
					60	0.104	0.010
Natsudaidai Japan 1992	WP	3	1.65	0.033	30	0.121, 0.140(F)	0.010, 0.013(F)	503,4
						0.166, 0.35(P)	0.024, 0.06(P)
						0.132, 0.20(W)	0.013, 0.03(W)
					45	0.108, 0.114(F)	0.007, 0.009(F)
						0.082, 0.15(P)	0.01, 0,02(P)
						0.101, 0.12(W)	0.008, 0.01(W)
					60	0.044, 0.048(F)	<0.005, <0.005(F)
						0.036, 0.04(P)	<0.005, <0.01(P)
						0.042, 0.05(W)	<0.005, <0.01(W)
		3	2.5	0.05	30	0.222, 0.403(F)	0.017, 0.021(F)
						0,59, 0.59(P)	0.09, 0.15(P)
						0.301, 0.45(W)	0.033, 0.06(W)
					45	0.144, 0.217(F)	0.010, 0.015(F)
						0.142, 0.22(P)	0.026, 0.04(P)
						0.144, 0.22(W)	0.013, 0.02(W)
					60	0.119, 0.170(F)	0.010, 0.011(F)
						0.16, 0.19(P)	0.03, 0.03(P)
						0.175, 0.13(W)	0.015, 0.02(W)
Natsudaidai Japan 1993	WP	3	1.7	0.033	30	0.295, 0.475(F)	0.036, 0.047(F)	513,4
						6.00, 8.42(P)	0.82, 0.972(P)
						2.02, 2.95(W)	0.27, 0.334(W)
					45	0.173, 0,274(F)	0.024, 0.027(F)
						2.53, 5.22(P)	0.42, 0.532(P)
						0.90, 1.83(W)	0.15, 0.186(W)
					60	0.238, 0.342(F)	0.028, 0.030(F)
						3.55, 4.51(P)	0.531, 0.56(P)
						1.25, 1.62(W)	0.182, 0.19(W)
		3	2.5	0.05	30	0.264, 0.270(F)	0.020, 0.028(F)
						4.88, 5.36(P)	0.682, 0.81(P)
						1.67, 1.86(W)	0.230, 0.26(W)
					45	0.433, 0.610(F)	0.054, 0.055(F)
						5.88, 6.47(P)	0.78, 0.86(P)
						2.06, 2.31(W)	0.265, 0.29(W)
					60	0.334, 0.552(F)	0.042, 0.050(F)
						3.55, 7.22(P)	0.56, 0.915(P)
						1.35, 2.60(W)	0.21, 0.316(W)
Mandarin New Zealand 1996	SP	7	2.7	0.075	14	2.59, 3.34	0.23, 0.29	68

¹ (F) Flesh (P) Peel (W) Whole

² No data on analytical recoveries

³ The data were also submitted to the 1994 JMPR

⁴ The 2 results were from duplicate analyses carried out in different laboratories. The higher values of each pair were used to estimate maximum residues and the means to estimate STMRs

Broccoli. Fourteen supervised trials data were carried out in Australia, Brazil, France, Italy, Japan and Spain. The results are shown in Table 4.

Table 4. Residues of acephate in broccoli.

Country, year	Application				PHI, days	Residues		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Australia 1995	SP	6	0.98	0.21	7	<0.02, <0.02	<0.02, <0.02	621
					14	<0.02, 0.02	<0.02, 0.02
					21	0.12, 0.32	0,04, 0.08
					28	<0.02, <0.02	<0.02, <0.02
		6	2	0.41	7	3.0, 3.1	0.41, 0.52
					14	1.6, 3.4	0.34, 0.52
					21	0.29, 0.58	0.06, 0.17
					28	0.02, 0.02	<0.02, <0.02
Brazil 1995	SP	1	0.75	0.075	0	7.3		72
		3	0.75	0.075	7	2.3
					14	0.2
					21	0.1
		1	1.5	0.15	0	11.8
		3	1.5	0.15	7	6.5
					14	0.2
					21	<0.1
France 1992	SP	3	0.75	0.25	7	0.32		462
	SP	3	0.75	0.25	7	0.03		472
France 1995	SP	3	0.73	0.22	0	2.2	0.13	78
					3	0.25	0.08
					7	0.15	0.05
					14	0.03	0.02
France 1995	SP	3	0.75	0.25	0	0.37	<0.01	77
					3	0.06	0.01
					7	<0.01	0.01
					14	<0.01	<0.01
Italy 1991	WP	1	0.47	0.047	28	0.45	0.2	453
		1	0.94	0.094	28	1.21	0.46
Japan 1993	WP	3	1.25	0.05	7	0.488, 0.742	0.138, 0.166	533,4
					14	0.070, 0.158	0.017, 0.040
					21	0.016, 0.028	0.008, 0.008
Japan 1993	WP	3	1.25	0.05	7	4.22, 6.29	0.962, 1.49	523,4
					14	1.28, 1.66	0.415, 0.566
					21	1.15, 1.24	0,470, 0.529
Spain 1995	SP	3	1.1	0.11	14	0.05	0.03	63
Spain 1996	WP	3	1	0.091	0	5.6	0.2	79
					3	4.8	0.28
					7	2.5	0.31
					14	1.2	0.32
					21	0.33	0.15

¹ The 2 results were from duplicate plots. The higher values of each pair were used to estimate both maximum residues and STMRs

² Analytical recovery was too low

³ The data were also submitted to the 1994 JMPR

⁴ The 2 results were from duplicate analyses carried out in different laboratories. The higher values of each pair were used to estimate maximum residues and the means to estimate STMRs

Brussels sprouts. The results of ten supervised trials in Australia, Belgium, South Africa and the USA are shown in Table 5.

Table 5. Residues of acephate in Brussels sprouts.

Country, year	Application				PHI, days	Residues		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Australia 1995	SP	6	0.98	0.21	1	2.8, 3.9	0.3, 0.3	581
					3	2,6, 7.1	0.2, 0.4
					5	1.1, 2.2	0.1, 0.2
					7	4.8, 11.5	0.8, 1.0
		6	2	0.41	1	20.3, 20.5	1.0, 1.3
					3	13.0, 15.1	0.9, 0.9
					5	9.5, 18.5	0.6, 1.4
					7	10.1, 15.8	0.9, 1.2
Australia 1995	SP	6	0.98	0.24	1	0.58, 0.78	0.05, 0.09	641,2
					3	0.43, 1.33	0.05, 0.12
					5	0.82, 1.04	0.07, 0.09
					7	1.32, 1.51	0.10, 0.11
		6	2	0.49	1	1.39, 1.58	0.13, 0.13
					3	2.1, 2.6	0.15, 0.17
					5	1.74, 3.54	0.13, 0.22
					7	1.67, 2.34	0.12, 0.15
Belgium 1972	SP	1		0.025	3	0.06, 0.09	0.83, 0.95	401,3
South Africa 1972	SP	3	0.59	0.056	1	2.59, 3.05	0.07, 0.10	43
					4	2.58, 2.92	0.12, 0.14
					8	0.42, 1.43	0.03, 0.09
					14	1.15, 1.28	0.08, 0.10
					21	0.37, 0.74	0.04, 0.06
USA, Trimmed heads	SP	5	1.1	0.24	0	4.7, 5.5	0.22, 0.23	11
					3	0.62, 0.73	0.05, 0.06
					7	0.16, 0.43	0.04, 0.04
					14	0.10, 0.23	0.01, 0.0
		5	2.2	0.48	0	2.9, 4.4	0.09, 0.11
					3	0.33, 0,40	0.03, 0.03
					7	0.45, 0.54	0.05, 0.02
					14	0.03, 0.10	<0.01, <0.01
Trimmings	SP	5	1.1	0.24	0	5.6, 7,0	0.26, 0.17
					3	0.20, 0.28	0.04, 0.03
					7	0.21, 0.34	0.04, 0.03
					14	0.10, 0.15	0.01, 0.02
		5	2,2	0.48	0	1.9, 4.6	0.08, 0.11
					3	0.35, 0.55	0.04, 0.04
					7	0.29, 0.43	0.03, 0.02
					14	0.04, 0.05	<0.01, 0.01
Trash	SP	5	1.1	0.24	0	22.2, 22.6	0.60, 0.59
					3	1.98, 3.03	0.24, 0.32
					7	0.50, 0.52	0.07, 0.07
					14	0.20, 0.70	0.04, 0.10
		5	2.2	0.48	0	6.28, 7.52	0.18, 0.24
					3	0.93, 1.55	0.15, 0.21
					7	0,38, 0,55	0.09, 0.14
					14	0.21, 0.46	0.10, 0.05
USA 1971	SP	8	1.1	0.27	0	2.28, 2.41	0.06, 0.07	31
					3	2.19, 2.71	0.08, 0.10
					7	0.58, 1.15	0.05, 0.08
USA 1971	SP	9	1.1	0.4	0	1.41, 2.75	009, 0.20	41,4
					3	1.03, 1.31	0.05, 0.07
					7	0.16, 0.21	0.02, 0.03

¹ Duplicate results were from duplicate plots.
² Only summary data were submitted
³ No information on control samples and no sample chromatograms
⁴ Abnormally high control values and no sample chromatograms

Head cabbages. The results of 11 supervised trials in Brazil, France, Germany, Japan and The Netherlands are shown in Table 6.

Table 6. Residues of acephate in head cabbages.

Country, year	Application				PHI, days	Residues		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Brazil 1994	SP	3	0.26	0.075	7	<0.05		71
					14	<0.05
					21	<0.05
		3	0.52	0.15	7	<0.05
					14	<0,05
					21	0.05
France 1976	SP	3	0.75	0.075	0	0.83, 1.13	0.03, 0.05	241
					7	0.63, 1.08	0.04, 0.07
					10	0.36, 1.25	0.04, 0.09
					14	0.80, 0.93	0.08, 0.09
France 1973	SP	1	0.53	0.05	0	1.26	0.1	12
					7	0.16	0.03
					14	0.54	0.09
					21	0.04	0.02
France 1974	SP	3	0.45	0.075	7	0.02, 0.03	0.01, 0.01	201
						0.05	0.01
France 1974	SP	1	0.45	0.075	7	0.02, 0.03	0.01, 0.01	191
						0.08	0.01
Germany 1976	SP	3	0.25	0.025	0	0.04	<0.01	13
			+	+	7	0.03	<0.01
			0.5	0.05	10	0.06	0.01
			+	+	14	0.03	<0.01
			0.25	0.025	21	0.03	<0.01
Germany 1976	SP	3	0.25	0.025	0	0.13	<0.01	25
			+	+	7	0.02	<0.01
			0.5	0.05	10	0.03	<0.01
			+	+	14	0.03	<0.01
			0.25	0.025	21	0.02	<0.01
Japan 1988	WP	3	0.9	0.05	6 13	0.057, 0.083	0.010, 0.010	442,3
						0.028, 0.032	0.006, 0.008
					19	0.022, 0.101	<0.005, 0.016
	WP	3	0.75	0.05	7	0.492, 0.664	0.096, 0.138	432,3
Japan 1987					14	0.276, 0.460	0.069, 0.140
					21	0.131, 0.139	0.044, 0.057
Netherlands 1972	SP	1	0.75	0.075	14	0.313, 0.331	0.038, 0.050	51,3

¹ The 2 results were from duplicate plots. The higher values of each pair were used to estimate both maximum residues and STMRs

² The 2 results were from duplicate analyses carried out in different laboratories. The higher values of each pair were used to estimate maximum residues and the means to estimate STMRs

³ The data were also submitted to the 1994 JMPR

Cauliflower. The results of seventeen supervised trials carried out in Australia, Brazil, France, Germany, Japan and The Netherlands are shown in Table 7.

Table 7. Residues of acephate in cauliflower.

Country, year	Application				PHI, days	Residues		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Australia 1995	SP	6	0.98	0.24	1	1.15, 1.50	0.11, 0.11	651
					3	0.47, 0.81	0.05, 0.09
					5	0.64, 0.80	0.09, 0.10
					7	0.72, 1.37	0.12, 0,20
		6	2	0.49	1	3.19, 4.93	0.31, 0.39
					3	2.82, 3.37	0.26, 0.32
					5	1.14, 3.33	0.17, 0.36
					7	2.34, 2.39	0.27, 0.28
Brazil 1995	SP	1	0.75	0.075	0	5.3		73
		3	0.75	0.075	7	1.2
					14	0.1
					21	<0.1
		1	1.5	0.15	0	7.1
		3	1.5	0.15	7	2.3
					14	0.3
					21	<0.1
France 1975	SP	1	0.5	0.03	14	0.03	<0.01	222
France 1988	SP	1	0.94	0.075	14	1.33, 1.64	0.19, 0.22	321,4
					21	1.04, 1.06	0.20, 0.17
		2	0.94	0.075	21	0.35, 0.41	0.14, 0.20
France 1995	SP	3	0.73	0.23	7	0.15	0.03	81
France 1995	WP	3	0.75	0.42	0	0.2	0.01	80
					2	0.21	0.02
					4	0.14	0.02
					7	0.1	0.01
France 1995	WP	3	0.75	0.32	0	0.42	0.04	86
					2	0.09	0.02
					4	0.07	0.02
					7	0.03	0.01
Germany 1976	SP	3	0.25	0.025	0	0.45	0.03	262
			+	+	7	0.12	0.02
			0.5	0.05	10	0.31	0.06
			+	+	14	0.39	0.06
			0.25	0.025	21	0.04	0.01
Japan 1995	WP	3	1	0.05	14	0.006, 0.008	<0.005, 0.006	605
					21	<0.005, <0.005	<0.005, <0.005
					28	<0.005, <0.005	<0.005, <0.005
Japan 1995	WP	3	1	0.05	14	0.586. 0.724	0.228, 0.214	615
					21	0.240, 0.290	0.088, 0.082
					28	0.162, 0.206	0.059, 0.071
Netherlands 1972	SP	1	0.75	0.075	14	0.041, 0.117	0.008, 0.018	61,2
Netherlands 1995	SP	4	0.76	0.094	13	0.03	<0.01	82
	SP	3	0.77	0.094	28	<0.01	<0.01	83
Netherlands 1995		4	0.76	0.094	13	0,02	<0.01
		3	0.76	0.094	28	<0.01	<0.01
Netherlands 1995	SP	4	0.76	0.094	14	<0.01	<0.01	84
		3	0.75	0.094	28	<0.01	<0.01
Netherlands 1995	SP	4	0.76	0.094	11	0.11	0.03	85
		3	0.76	0.094	19	0.03	<0.01, 0.01

¹ The 2 results were from duplicate plots. The higher values of each pair were used to estimate both maximum residue levels and STMRs

² The data were also submitted to the 1994 JMPR

³ Abnormally high control values and no sample chromatograms

⁴ The data were also submitted to the 1990 JMPR

⁵ The 2 results were from duplicate analyses carried out in different laboratories. The higher values of each pair were used to estimate maximum residues and the means to estimate STMRs

Tomatoes. Forty supervised trials were carried out in Australia, Brazil, Canada, France, Japan, South Africa, Spain and the USA. The results are given in Table 8.

Table 8. Residues of acephate in tomatoes.

Country, year	Application				PHI, days	Residues		Reference and Remarks
	Form.	No.	kg ai/ha	kg ai/hl		Acephate	Methamidophos
Australia 1995	SP	6	0.98	0.35	1	1,1, 1.6	0.23, 0.30	691
					3	1.5, 1.8	0.40, 0.50
					5	0.85, 0.88	0.23, 0.26
					7	1,2, 1.6	0.33, 0.43
		6	2	0.7	1	1.9, 2.8	0.37, 0.58
					3	0.76, 0.77	0.22, 0.23
					5	1.6, 2.6	0.47, 0.55
					7	2.1, 2.2	0.53, 0.54
Brazil 1994	SP	3	0.3	0.075	3	<0.05		74
					7	<0.05
					14	<0.05
		3	0.6	0.15	3	<0.05
					7	<0.05
					14	<0.05
Canada 1980	WP	3	0.55	0.069	3	0.79	0.06	562,3
					7	0.75	0.02
					14	0.22	0.04
		3	1.1	0.14	3	0.94	0.05
					7	1.1	0.03
					14	0.68	0.02
Canada 1980	WP	3	0.55	0.069	3	0.47	0.11	571,3
					7	0.46	0.14
					14	0.21	0.01
		3	1.1	0.14	3	0.71	0.15
					7	0.72	0.21
					14	0.06	0.03
France 1973	SP	1	0.3	0.03	0	2.08	<0.02	7
					7	0.13	<0.02
					13	0.07	<0.02
					20	0.06	<0.02
France 1973	SP	1	0.5	0.05	0	0.93	0.03	8
					7	0.06	0.02
					13	0.05	0.02
					20	0.07	0.03
France 1973	SP	1	0.53	0.053	0	0.49	0.02	9
					7	0.15	0.02
					13	0.1	0.04
					20	<0.05	0.03
France 1974	SP	2	0.83	0.05	1	0.38,	0.02, 0.02	141
						0.63, 0.72	0.02
					3	0.19,	0.02, 0.02
						0.41, 0.43	0.02
					7	0.14,	0.02, 0.03
						0.29, 0.36	0.03
					10	0.12,	0.03, 0.03
						0.18, 0.36	0.04
					15	0.11, 0.21	0.03, 0.05
						0.29	0.06
					21	0.10, 0.14	0.03, 0.04
						0.19	0.06
France 1974	SP	2	0.83	0.05	1	0.42, 0.56	0.01, 0.01	101
						0.65, 0.53	0.03, 0.04
					7	0.08, 0.17	0.01, 0.02
						0.17, 0.17	0.03, 0.03
France 1974	SP	1	0.9	0.075	7	0.46, 0.61	0.04, 0.05	151,4
France 1974	SP	3	0.9	0.075	7	1.10, 1.48	0.22, 0.25	161,4
France 1974	SP	1	0.45	0.075	7	0.34, 0.38	0.06, 0.08	17
France 1974	SP	3	0.45	0.075	7	0.24, 0.32	0.08, 0.10	18
France 1974	SP	1	0.5	0.05	14	0,09	0.02	21
France 1974	SP	3	0.76	0.075	0	0.68, 0.77	0.09, 0.11	241
					7	0.35, 0.45	0.11, 0.14
					10	0.26, 0.48	0.12, 0.17
					14	0.27, 0.38	0.13, 0.16
France 1986	SP	1	0.75	0,075	14	0.39, 0.45	0.12, 0.16	271
					21	0.19	0.04
France 1986	SP	1	0.62	0.075	15	0.09, 0.26	0.02, 0.04	281
					21	0.06, 0.08	0.03, 0.03
France 1988	SP	1	0.55	0.075	13	<0.05, <0.05	<0.02, <0.02	301
					20	<0.05, 0.12	<0.02, <0.02
		2	0.55	0.075	20	0.09, 0.22	<0.02, 0,05
France 1988	SP	1	1.64	0.075	14	0.40, 0.44	0.06, 0.07	311
					21	0.05, 0.08	0.06, 0.07
		2	1.64	0.075	21	0.54, 0.95	0.32, 0.44
France 1992	SP	3	0.75	0.075	2	0.4		75
France 1992	SP	3	0.75	0.075	0	0.8		76
					1	0.91
					2	0.94
					5	0.59
					7	0.74
Japan 1985	WP	3	0.9	0.05	1	0.597, 1.03	0.063, 0.082	423,3
					3	0.703, 0.878	0.060, 0.072
					7	0.720, 0.893	0.072, 0.106
Japan 1984	WP	3	0.75	0.05	1	0.225, 0.687	0.027, 0.059	423,5
					3	0.566, 0.867	0.058, 0.084
					7	0.352, 0.648	0.085, 0.123
South Africa 1973	SP	5	0.38	0.013	0	0.16	0.04	113
					1	0.14	0.03
					2	0.16	0.03
					3	0.12	0.03
					7	0.14	0.03
		5	0.75	0.026	3	0.23	0.07
Spain 1995	SP	3	1.1	0.11	14	0.05	0.03	59
USA 1987	SP	8	1.12	0.4	3	1.4	0.08	29
	SP	6	1.12	0.21-0.27	3	0.50, 0.63	0.12, 0.17	901
USA 1990						0.65, 0.69	0.17, 0.18
					5	0.36, 0.40	0.12, 0.12
						0.70, 0.73	0.19, 0.19
	SP	6	1.12	0.21-0.27	3	0.60, 0.64	0.17. 0.18	871
USA 1990						0.75, 0.98	0.23, 0.27
					5	0.36, 0.49	0.12, 0.16
						0.63, 0.64	0.19, 0.22
	SP	6	1.12	0.14-0.22	3	0.69, 1.0	0.12, 0.17	881
USA 1989						1.1, 1.3	0.19, 0.25
					5	0.76, 0.87	0.16, 0.19
						0.89, 1.00	0.18, 0.20
	SP	6	1.12	0.096-0.19	3	0.33, 0.43	0.14, 0.18	891
USA 1989						0.47, 0.53	0.23, 0.26
					5	0.25, 0.28	0.13, 0,15
						0.29, 0.32	0.18, 0.21
USA 1990	SP	6	1.12	0.19-0.2	3	0.46, 0.66	0.09, 0.14	911
					5	0.57, 0.62	0.16, 0.19
USA 1990	SP	6	1.1	0.1-0.25	3	0.19, 0.20	0.06, 0.06	921
						0.24, 0.27	0.08, 0.09
USA 1993	SP	6	1.12	0.38-0.41	3	0.22, 0.28	0.06, 0,09	931
USA 1993	SP	6	1.12	0.39-0.42	3	0.45, 0.47	0.09, 0.09	941
USA 1993	SP	6	1.12	0.4	3	0.33, 0.51	0.07, 0.13	951