Apple orchard diseases – Rot management options (Rot risk assessment)

Fungal rot	Assessment timing	Orchard Risk	Rot history	Rain	Decision
Brown rot	July / August	orchard incidence  high (>1%)	N/A	N/A	Selective picking at harvest and / or Market fruit early
		Orchard incidence low	N/A	N/A	Selective picking at harvest
Botrytis (eye rot)	August	N/A	Moderate-high incidence	Rain June to Harvest average or > average	Market fruit by January
				Rain June to Harvest < average	No specific action needed
		N/A	Low incidence	Rain June-Harvest =average or < average	No specific action needed
Neonectria rot	April	Moderate-high incidence cankered trees	Moderate – high incidence	N/A	Apply fungicide spray in blossom and petal fall
		Low incidence cankered trees	Low incidence	N/A	No fungicide treatment in blossom/petal fall needed
	August / September	Low-high incidence cankered trees	N/A	>average rain blossom-harvest	Market fruit before January if no sprays applied in blossom/petal fall
		Moderate-high incidence cankered trees	N/A	average rain blossom-harvest
		High incidence cankered trees	N/A

Fungal rot	Assessment timing	Orchard Risk		Rain in 15 days pre-harvest	Decision
		% bare ground	% crop <0.5 m above ground
Phytophthora rot	Mid July	0% = overall grass, weed cover or mulch	N/A	N/A	No sprays needed
		20% or > bareground	>15%	N/A	Apply fungicide 28 and 14 days pre-harvest or delay action until harvest
	August / September / Harvest	0% = overall grass, weed cover or mulch	N/A	N/A	No specific action as risk very low
		20% or > bareground	> 15%	low or no rain = low risk	No specific action as risk very low
				20 mm or > = high risk	Selective pick at harvest or Market fruit early to minimise losses if no fungicide treatment applied
			< 15%	N/A	No specific action as risk very low