VIDEO: THROWBACK: Targeting your fertilizer needs using the 4Rs

Synchronizing nutrient uptake and 4R principles for optimal crop results

Reading Time: < 1 minute

Published: March 4, 2026


This video post from 2024 explains the distinction between nutrient uptake and removal and the strategic integration of 4R principles. With Manitoba’s 2026 seed guide season in full swing, we’re digging this one out from our archive.


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Nutrient uptake and nutrient removal in crops may sound like the same thing, but they are quite different when it comes to how crops use nutrients as they mature over the growing season.

At Manitoba 4R Day in 2024, Marla Riekman with Manitoba Agriculture spoke about how, and when, major crops — and in some cases, varieties — take up their nitrogen, enhanced efficiency fertilizers and why growers can’t effectively use the 4Rs — right source, right rate, right time, right place — in isolation if they want to see ideal results.

About the author

Greg Berg

Greg Berg

Digital Editor

Greg Berg was born and raised in the potash capital of the world of Esterhazy, Saskatchewan. Greg helped out on the family homestead farm near Stockholm, Sask., for a number of years in his youth. Greg graduated from the Creative Communications program at Red River College in 2011 and joined Glacier FarmMedia in 2014. He specializes in video production and is a songwriter in his spare time.

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