Materials supplying nitrogen, phosphate, potash, secondary nutrients and micronutrients are chemically combined into one solid granule. The granules’ size, shape, and density are closely controlled so that each granule has consistent percentages of each nutrient.
All the Nutrients Your Plants Need, in One Granule
For optimal crop yields and quality, basic NPK is not enough. Depending on the soil in your region your plants could face serious deficiencies in primary, secondary and micronutrients. That's why we created Rainbow plant food - to ensure your plants get the balanced nutrition they need from each uniform granule.
Spotting Nutrient Deficiencies
How do you know if your plants are deficient in nutrients? The symptoms can be difficult to spot. Click on each nutrient to learn how to spot nutrient deficiencies in your plants.
You Can See the Difference
There are two basic types of dry granular fertilizers: blended and ammoniated.
A blend is made by mixing together two or more fertilizer materials. Particles of nitrogen, phosphate, potash, limestone filler, and occasionally small amounts of secondary nutrients and micronutrients are mixed together.
Ammoniated is Better
Because the nutrients in a blend are only mixed together physically they can segregate during transportation, handling and application, resulting in uneven distribution in the field. With ammoniated fertilizer this distribution breakdown is not possible because the nutrients are chemically combined which results in a consistent application for your crops.
Rainbow Plant Food has helped thousands of growers maximize economic yield and improved their profitability.
Farming technology is constantly improving and so is Rainbow Plant Food. Each grade is reviewed annually. Formulations are altered as needed to meet the changing nutritional needs arising from increased yields, new crop varieties, and modified farming practices. Rainbow Plant Food formulations are tailor made, based on thousands of soil samples taken from area farms. Our end goal? Your bottom line.
How It’s Made
Through an elaborate four-step process, we chemically fuse precise amounts of primary, secondary, and micronutrients to form multi-vitamin granules. Every granule is a complete package of nutrients that are uniform in size, shape, and weight, so they spread evenly to maximize distribution. These granules also deliver the proper nutrient amount within the all-important root zone. Rainbow gives your crops just the right amount of nutrients needed to thrive and bring you strong returns.
Though totally unique, Rainbow Plant Food begins just like every other fertilizer – as piles of dry and pulverized nutrients. Before the granulation process begins, computers weigh out exact portions of minerals such as nitrogen, phosphorus, and potassium to ensure that every granule contains an equivalent amount.
GRANULATION / AMMONIATION
With the help of liquid ammonia to serve as the glue that binds nutrients together, weighed dry raw materials are mixed together in a tank called the “ammoniator.” The resulting chemical reactions and heat cause dry salts to convert to a liquid phase, which harden again in the pellet shape of granules.
Drying and Cooling
Piping hot granules go from the ammoniator to a rotary dryer, which dries them with heated air that flows in the same clockwise direction as the granules themselves. The granules then go to a rotating cooler, which cools them with heated air flowing in the opposite direction.
Conveyor belts rake the granules over a bank of two-surface vibrating screens that allow only granules of the proper size and shape to receive a dust-suppressant coating. Undersized particles are sent back to the ammoniator to be re-granulated. Oversized particles are crushed and re-screened.
PHASE FIVE: TESTING
Once these nutrient-packed granules are ready to hit the shelves, Rainbow technicians step in to test the products to make sure each and every one is up to snuff. These technicians are regularly sampling our granules to check for quality, and consistency. The result: a product that’s second to none, time after time.
Products Designed to Meet Your Needs
No two growers are alike, and over the years, Rainbow Plant Food has evolved into a family of three distinct brands to meet the needs of our diverse customer base:
Nutritional benefits that meet your crops needs. Rainbow boasts the same four basic minerals as our International product, and adds other nutrients such as boron, manganese and zinc to promote fuller and more vibrant crops. Started as a premium plant food for cotton in 1925, today this product is perfect for just about every crop, including cotton, corn, tobacco, soybeans, and more.
Going premium pays. Super Rainbow offers you optimal nutritional benefits through additional nutrients such as magnesium, sulfur, and calcium to facilitate exceptional yields and higher grades. This product line also boasts additional micronutrients including copper, iron, and boron – all of which act as catalysts to activate enzyme systems and maximize plant health and crop quality. These kinds of inputs will lead you to exceptional yields, higher grades and maximum profits.
Formulated to give an even distribution of N, P and K. International is produced to specifically meet your economic needs, as well as your crops’ nutritional requirements. It is a reliable cost-effective alternative to physically mixed materials. Granules of this product contain a standard amount of nitrogen, phosphorus, potassium, and sulfur – the four essential ingredients for above-average yields.