Timing Start of weed treatment Start of weed treatment Start of weed treatment Start of weed treatment End of weed treatment End of weed treatment End of weed treatment End of weed treatment
Early series† 2015 2016 2018 2019 2015 2016 2018 2019
0 0 0 0 330 297 365 352
0 0 0 0 398 384 565 552
0 0 0 0 462 451 765 752
0 0 0§ 0§ 532 511 1240§ 1223§
0 0 - - 582 581 - -
0 0 - - 631 648 - -
0§ 0§ - - 1181§ 1185§ - -
Late series
330 297 365 352 1181 1185 1240 1223
398 384 465 452 1181 1185 1240 1223
462 451 565 552 1181 1185 1240 1223
631 648 765 752 1181 1185 1240 1223
1181 1185 1240 1223 1181 1185 1240 1223