Alfalfa forage and green grass

Alfalfa forage and green grass (Table 33). Two supervised trials on alfalfa and one on green grass were carried out in Italy (1 x 0.075 kg ai/ha). The residues in alfalfa forage declined from 1.4 and 2 mg/kg at day 3 to 0.18 and 1.2 mg/kg at day 28 after application, and in grass from 12 mg/kg at day 3 to 0.71 mg/kg at day 28. No information on GAP was available to evaluate the trials.

Table 33. Residues of teflubenzuron in forage (alfalfa and grass) from supervised trials in Italy, 1988. Green forage analysed.

Application					PHI, days	Residues, mg/kg	Report No.
kg ai/hl		kg ai/ha	No.
Alfalfa
0.008	0.075			1	0	4.8	SHGR.89.007
					3	2.0
					7	1.7
					14	2.2
					21	0.06
					28	0.18
0.008	0.075			1	0	0.49	SHGR.89.007
					3	1.4
					7	0.72
					14	0.48
					21	0.46
					28	1.2
Grass
0.008	0.075			1	3	12	SHGR.89.008
					7	5.2
					14	7.4
					21	1.5
					28	0.71

Soya bean forage and hay (Table 34). Teflubenzuron is registered for use on soya beans in Brazil (0.0075-0.023 kg ai/ha) and in Paraguay (2-3 treatments of 0.075 kg ai/ha) with PHIs of 30 days.

Residues were determined in soya bean forage in 8 trials and in hay in 4 in the USA. After applying 1 or 2 x 0.022 kg ai/ha the residues in the forage and hay were 0.17-0.56 and 0.19-1.3 mg/kg respectively at 14 days.

Table 34. Residues of teflubenzuron in soya bean forage and hay from supervised trials in the USA, 1987.

Application						PHI, days	Sample	Residues, mg/kg	Report No.
kg ai/hl	kg ai/ha			No.
0.012		0.022			1	0	forage	0.97	HAS A025.001
						0		1.1
						3		0.71
						3		0.73
						7		1.0
						7		0.27
						14		0,49
						14		0.30
0.012		0.022			2	0	forage	0.93	HAS A025.001
						0		1.2
						3		0.45
						3		0,31
						7		0.22
						7		0.26
						14		0.36
						14		0.17
						0	hay	2.2
						0		1.7
						3		1.2
						3		0.96
						7		<0.05
						7		<0.05
						14		0.08
						14		0.19
								0.19
0.015		0.022			1	0	forage	0.59	HAS A025.001
						0		0.60
						3		0.53
						3		0.28
						7		0.06
						7		0.66
						14		0.22
						14		0.30
0.015		0.022			2	0	forage	0.61	HAS A025.001
						0		0.66
						3		1.1
						3		0.66
						7		0.50
						7		1.0
						14		0.54
						14		0.51
						0	hay	0.86
						0		1.1
						3		<0.05
						3		1.8
						7		1.9
						7		0.80
						14		0.91
						14		0.26
0.024		0.022			1	0.	forage	1.3	HAS A025.001
						0		0.54
						3		0.44
						3		0.67
						7		0.44
						7		0.46
						14		0.53
						14		0.48
						0	hay	1.0
						0		2.3
						3		2.1
						3		0.17
						7		1.6
						7		2.4
						14		0.60
						14		1.3
0.024		0.022			2	0	forage	0.58	HAS A025.001
						0		0.58
						3		0.60
						3		0.34
						7		0.46
						7		0.34
						14		0.34
						14		0.45
0.015		0.022			1	0	forage	0.97	HAS A025.001
						0		0.92
						3		0.98
						3		0.93
						7		0.79
						7		0.86
						14		0.56
						14		0.46
0.015		0.022			2	0	forage	0,67	HAS A025.001
						0		0.76
						3		0.48
						3		0.31
						7		0.28
						7		0.62
						14		0.28
						14		0.41
						0	hay	0.57
						0		1.3
						3		0.77
						3		0.88
						7		0.65
						7		1.6
						14		0.62
						14		0.77