This study compared the performance of AGGRAND natural fertilizers with the performance of a leading inorganic fertilizer when applied to garden vegetables in raised planting beds.
Each bed included four garden vegetables: sweet corn, potatoes, tomatoes and bush green beans.
Plots fertilized with AGGRAND natural fertilizers outperformed the plots fertilized with the leading inorganic fertilizer and the control plots where no fertilizer, only water, was applied.
This year’s program featured yield comparisons between a plot fertilized with AGGRAND fertilizers and soil amendments, a plot fertilized with a leading organic fertilizer, and an unfertilized control plot.
The organic fertilizer manufacturer’s recommendations were followed. Four common garden vegetables — tomatoes, potatoes, broccoli and carrots — were grown and compared for size, weight, total number and total weight.
The AGGRAND fertilizer program, as in 2010, produced greater yields when compared to the plot fertilized with a leading organic fertilizer.
This year’s program featured yield comparisons of a plot using AGGRAND fertilizers and soil amendments and a plot using a fish/kelp based organic fertilizer.
The organic fertilizer was applied according to the company’s application guidelines on the product label and the manufacturer’s website.
A control plot that received only water was planted between the competitive and AGGRAND plots. This control plot was watered whenever the other plots received fertilizer. The plots were planted with three common garden vegetables — tomatoes, lettuce and snap peas — and were evaluated for total weight and number.
The AGGRAND fertilizer program produced greater yields of tomatoes, lettuce and snap peas when compared to the plots fertilized with the leading organic fertilizer.
This year’s study evaluated sweet-corn and green-bean yield.
The AGGRAND fertilization system significantly outperformed a leading competitive Organic Materials Review Institute (OMRI) listed product.
In addition, soil nutrient levels and respiration continued to improve in the AGGRAND growth plot.
This year’s study evaluated tomato and onion growth, development and yield.
During the 2014 growing season, the AGGRAND fertilization system significantly outperformed a popular, salt-based chemical fertilizer designed for homeowners.
In addition, overall soil nutrient levels and microbial respiration showed improvement over the plot fertilized with the competitive fertilizer.