2024 Production Updates and Seasonal Outlook for NS_ 9th Blight Line Post_ May 29

Wednesday, May 29, 2024

GDD Updates_ April 1- May 27

Figure 1. GDD Summary, April 1- May 27

Nova Scotia Wild Blueberry Crop Stage Updates

Sprout fields:


In province-wide, we are looking at above 50% plant emergence across the majority of sprout fields.

At this point:


-       It is very risky to apply pre-emergence herbicides to sprout fields.

-       Consider post-emergence herbicide application (Callisto, Venture L, etc.) and spot spray

-       Consider granular fertilizer application

-       Consider sulfur application (soil pH management)

-       Please monitor insect pests, such as flea beetles, blueberry thrips, and leaf beetles. Figure 2 shows flea beetle infestation in a sprout field in early June. If damage is observed, growers should consider insecticide application if it is early or consider fertilizer application in damaged spots to help plants re-grow.

Figure 2. Flea Beetle Infestation in a Sprout Field


Crop fields:


The majority of crop fields in NS are in the early to mid bloom stages. Please consider the following activities based on your own situation:

-       Placing beehives or bumble bees in crop fields to increase pollination efficiency

-       Blossom Botrytis Blight Management

-       Frost watch



Quick Monilinia Blight Infection Report for the 2024 Season


May is a month with a high risk of Monilinia blight infection in wild blueberry crop fields because of the right crop stage and the Maritime spring weather pattern. As most of you are aware, May is pretty dry. The Kentville weather station recorded 25 mm of rain in May and that’s below the 75 mm 10-year average in the area. Although we received some rain in the last two days, May is very likely running into a precipitation deficit in the province.

The good news is that the Monilinia blight infection risk is low. We had two provincial-wide wet periods (May 8-9 and May 16-17) according to the weather station data, but it was short and mild. Most growers apply at least 1 Monilinia blight fungicide which was very helpful.

After this marathon-like spraying period, most of us will look at fields most closely and frequently. If I see obvious infections due to Monilinia blight, I will share.


A free webinar on Pesticide Drone Application.

-       This is a free webinar to talk about pesticide drone application. Time: June 19, 1 PM Halifax time. Zoom. To register: https://us02web.zoom.us/meeting/register/tZEvdu6hqjksGdES3pLq80Y8qvsuWtKge2fU#/registration


Have a great week!