VCR – Vegetable Crop Report – May 3rd, 2024

The Vegetable Crop Report is back for another season! Most regions have experienced a wet April compared to their 10-year average and are matching or surpassing their 10 year average GDD trend.

Crop Updates

Brassica Crops – Transplanting of Brassicas has been ongoing for the past 2 weeks in warmer areas of the province.

Garlic – The emergence rate across the province has been high with few plants showing winterkill. Winterkill is generally the result of weakened plants due to stem and bulb nematode, late planting (or planting near the soil surface), waiting too long to plant after cracking or early seedcorn maggot fly damage. Nitrogen applications prior to the 5^th leaf stage will result in better storage and fewer rough bulbs. Set up leek moth traps now to plot population peaks and determine if / when insecticides are necessary.

Onions – Onion seeding is underway, and the forecast looks good for transplant onion establishment over the next couple of weeks.

Pest Degree Day Forecasting

County	Carrot Rust Fly	Onion Maggot	Carrot Weevil	Aster Leafhopper	Tarnished Plant Bug	Cabbage Maggot	Seedcorn Maggot	European Corn Borer
THRESHOLD	329-395, 1399-1711	210-700, 1025-1515	138-156, 455+	128+	40+	314-398, 847-960, 1446-1604	200-350, 600-750, 1000-1150	See legend below
Bruce***	180	142	65	35	12	85	142	26
Essex*	329	280	161	106	47	195	280	84
Chatham-Kent*	287	242	134	89	35	165	242	67
Norfolk**	277	230	116	69	23	149	230	50
Huron***	232	190	91	51	20	119	190	37
Wellington Centre**	199	156	70	35	8	92	156	23
Wellington North**	191	152	66	36	9	90	152	25
Simcoe***	188	149	64	29	4	86	149	16
Durham***	208	164	68	29	4	95	164	16
Peterborough	187	146	60	24	5	84	146	15
Kemptville***	189	147	66	34	8	86	147	23
Sudbury***	85	60	16	5	0	27	60	2
Timiskaming***	68	49	14	5	0	22	49	2
Lambton**	275	231	125	77	31	156	231	59
Thunder Bay	54	33	1	0	0	6	33	0
Middlesex**	279	232	120	72	26	153	232	54
Renfrew	169	130	51	24	4	71	130	15