Can Lowering Fertilizer Rates Help You Save Money While Maintaining Crop Quality?

OnFloriculture Lowering Fertilizer Web

4 chrysanthemum varieties rising aspect by aspect at 75ppm (left aspect of benches) and 250ppm of N (proper aspect of benches) of N in a Vineland trial. Photograph: Jessie deHaan

Producing high-quality crops in a cheap manner has at all times been a balancing act between fertilizer, mild, irrigation, and different enter prices.

Sadly, provide chain points attributable to the pandemic slowdown, and exacerbated by the following battle in Ukraine, have negatively affected the worldwide provide of fertilizer and plant vitamins. These provide points have led to rising fertilizer costs for growers.

As enter prices rise, how can growers reply and get monetary savings, whereas nonetheless producing first-rate merchandise? This subject was not too long ago addressed by Jessie deHaan, Analysis Technician on the Vineland Analysis and Innovation Centre in Ontario, in a publish on

deHaan notes that earlier research on the College of Guelph indicated that floriculture crops typically obtain extra fertilizer than they want. Apart from the apparent financial advantages (decrease enter prices), reducing fertilizer enter also can forestall nutrient runoff and shield lakes and waterways from elevated phosphorus and nitrogen ranges escaping from close by farms. However is it attainable to decrease fertilizer enter however nonetheless produce the identical high-quality crops? In that case, how low is just too low?

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As half of a bigger undertaking funded by Canadian Decorative Horticulture Alliance (COHA) and American Floral Endowment (AFE) to check the impact of lowering fertilizer on plant susceptibility to thrips populations, Vineland and Ontario Ministry of Agriculture, Food and Rural Affairs researchers carried out a collection of experiments on potted chrysanthemum (mum) utilizing totally different fertilizer ranges.

As a result of the impact of fertilizer discount on potted chrysanthemum high quality could be selection dependent and environmental circumstances can range between greenhouses, in case you are involved in reducing fertilizer ranges you’ll seemingly have to seek out the perfect fee for all varieties grown in your operation. This may contain placing totally different compartments or benches on totally different feed tanks. Take a look at a small group of round 10 crops of every selection in the identical yr and manufacturing cycle, in an space of your greenhouse usually used for manufacturing. Take a look at a number of fertilizer charges between 100 and 300ppm of N to seek out the optimum one which works in your greenhouse’s rising circumstances whereas nonetheless producing stunning crops on schedule.

The research decided that relying in your rising circumstances and varieties, you may even see little to no distinction in plant high quality by lowering fertilizer enter. Nevertheless, it’s essential to keep in mind that some crops or varieties could also be extra negatively impacted than others, so take a look at the impact of diminished fertilizer on all crops and varieties being grown earlier than making sweeping adjustments. Keep away from making generalizations for all varieties if favorable outcomes are discovered for one selection.

Learn deHaan’s full article right here.


Can Reducing Fertilizer Charges Assist You Save Cash Whereas Sustaining Crop High quality?