Between Two Rows

Kristy Grigg-McGuffin & Erika DeBrouwer

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EDUCATION

Tackling apple related questions one sip at a time under the orchard canopy

MAR 16

Leaves & Labels: Leaf Drop & Pesticide Intervals Explained

In the Season 2 premiere of Between Two Rows, Erika and Kristy tackle two orchard questions that just won't drop: 1) Why are there still leaves on the tree? 2) How do intervals on pest control product labels get set? First, Erika investigates why some trees hold onto their leaves longer than expected, breaking down the physiology of leaf drop, the role of the abscission layer, and whether marcescence really applies to apples. Then we shift gears to the regulatory world where Kristy explains how restricted entry intervals (REIs) and preharvest intervals (PHIs) are determined on pest control product labels - and why those numbers don't always line up the way you might expect. Featured cider this episode: Spy Cider House & Distillery (Spy Estate), The Blue Mountains ON Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. Additional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub.

1 hr
11/17/2025

The N Factor: Orchard Sanitation & Nitrogen Needs Explained

In this episode of Between Two Rows, Erika and Kristy dig into the N factor - how nitrogen shapes tree growth, fruit quality and orchard health, tackling two grower questions: What is the nitrogen demand in an orchard? How can urea be used as a disease management tool? First, we explore orchard floor management and supporting sanitation strategies to breakdown overwintering apple scab. We walk through how urea works, when to use it, and how it fits alongside your regular fertility program. Then we shift gears to how trees actually use nitrogen, and what happens when they get too much... or not quite enough. Whether you're planning nutrient budgets, thinking about fruit set, or looking for tools to reduce disease pressure, this episode connects the dots between nutrition, disease management, and timing - all in one conversation between two rows. Featured cider this episode: Archibald's Estate Winery (Hard Ginger), Bowmanville ON Looking to enter the 2026 Ontario Cider Competition? Registration now open for the Ontario Craft Cider Competition (February 17) and Ontario Sweet Cider Competition (February 18). Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. Additional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub.

1 hr
10/20/2025

Creepy, Crawly & Curious: Zombie Bugs & Chimeras Explained

In this Halloween episode of Between Two Rows, Erika and Kristy get spooky and dig into two grower-submitted questions: Why do I like bugs... especially the creepy, crawly ones? What is a chimera - a magical mutation or an orchard trick? First, we explore why some bugs are downright fascinating - from parasitoids that hijack their hosts to fungi that turn insects into 'zombies'. Then we switch gears to the orchard to uncover the mystery of apple chimeras - nature's very own Frankenstein fruits. Tune in for science with a spooky twist, all between two rows. Featured cider this episode: Wellesley (Sweet Apple Cider), Wellesley ON Looking to enter the 2026 Ontario Cider Competition? Registration now open for the Ontario Craft Cider Competition (February 17) and Ontario Sweet Cider Competition (February 18). Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. Additional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub. Sound Effect by DRAGON-STUDIO from Pixabay.

48 min
09/24/2025

Bitter Truths & Blight Fight: Calcium Pathway & Fire Blight Management Explained

In this episode of Between Two Rows, Erika and Kristy dig into two grower-submitted questions: What is calcium's role in bitter pit? Is there an ideal time to manage fire blight? First, we explore the calcium pathway - how calcium moves through the tree, why fruit is often the last to receive it, and the role this plays in the development of bitter pit. Then we shift gears to fire blight, tackling the question of whether there really is an "ideal" time to manage this devastating disease, or if timing depends on orchard conditions and seasonal risk. Join us as we break down the science and share practical insights - all in one conversation between two rows. Featured cider this episode: Loch Mor Cider Co. (Untamed Dry Cider), Hillier ON Looking to enter the 2026 Ontario Cider Competition? Registration now open for the Ontario Craft Cider Competition (February 17) and Ontario Sweet Cider Competition (February 18). Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. Additional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub.

55 min
08/18/2025

Fluff, Fruit & Future Harvest: Woolly Apple Aphid & Nutrient Needs Explained

In this episode of Between Two Rows, Erika and Kristy dig into two grower-submitted questions: What is this fluff on my tree? Does timing of nutrient application affect next year's fruit set? First, we break down woolly apple aphid ID, damage and what their life cycle means for management. Then we dig into how the timing of your nutrient applications can influence next year's fruit set, with insights to help you plan ahead. Practical, research-based, and grower-focused - all in one conversation between two rows. Featured cider this episode: Heritage Estate Winery & Cidery (Strawberry Eden's Apple Cider), Barrie ON Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. Additional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub.

44 min
07/11/2025

Bud to Bug: Flower Induction & Insect Development Explained

In this episode of Between Two Rows, Erika and Kristy dig into two grower-submitted questions: What exactly is flower induction and what hormones are involved? What are the impacts of weather on orchard pest development? First, we break down the hormonal and physiological processes behind setting next year's buds. Then we shift gears to the insect world and tackle how temperature influences pest development - including a dive into degree days and why they matter for managing orchard pests. Featured cider this episode: Thornbury Craft Co. (Premium Apple Cider), Thornbury ON Have a question for another episode? Leave it in the comments, or message us @fruitwithespurs or @appleofmyipm. For timely apple pest and production updates, check out onfruit.ca. In particular for this episode, read: Bountiful Buds for Next SeasonInduction JunctionAdditional pest management information can be found at Ontario Crop IPM and the Ontario Crop Protection Hub.

31 min

6 Episodes

Tackling apple related questions one sip at a time under the orchard canopy

Creator

Kristy Grigg-McGuffin & Erika DeBrouwer
Years Active

2025 - 2026
Episodes

6
Rating

Clean
Copyright

© 2026 Between Two Rows
Show Website

Between Two Rows