As a nitrate water-soluble fertilizer supplier, I get this question all the time: Does our product contain all the essential nutrients plants need? It’s a fair, important question—especially when growers are trying to balance cost, crop health, and long-term soil health. Over the years, I’ve talked to vegetable farmers in the Central Valley, nursery operators in the Pacific Northwest, and even small urban hydroponic growers who’ve hesitated to switch to nitrate-based formulas because of confusion around nutrient completeness. Let me break this down the way I do with my customers: not just with technical terms, but with the hands-on experience I’ve gained working with these crops. Nitrate Water-soluble Fertilizer
First, let’s start with the basics. Plants need 17 essential nutrients to complete their life cycle, split into two groups: macronutrients (needed in large amounts) and micronutrients (needed in small, but critical, amounts. Macronutrients are nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S). Micronutrients are iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), boron (B), molybdenum (Mo), chlorine (Cl), and nickel (Ni). A fertilizer’s job is to supply these nutrients in forms plants can absorb, and nitrate-based formulas are a specific type of water-soluble fertilizer that uses nitrate as the primary nitrogen source, instead of urea or ammonium.
A lot of people assume that nitrate water-soluble fertilizers only have nitrate N—but that’s not true at all. Back when I first got into this industry 12 years ago, I realized growers were buying “nitrate fertilizers” that only had that single N form, and then having to buy separate additives for phosphorus or calcium, which doubled their input costs. That’s why our company designed our core nitrate water-soluble line to cover not just nitrate N, but the full set of macronutrients. For example, our tomato-specific formula has 15% nitrate N, 5% ammoniacal N (a small boost to support early root growth), 10% available P2O5 (phosphorus), and 15% K2O (potassium). It also has 3% Ca and 1% Mg—macronutrients that many competing nitrate formulas leave out because they cost a little more to source, but which are non-negotiable for crops like tomatoes that suffer from blossom-end rot without enough calcium.
But here’s the key part: macronutrients are only half the story. Micronutrients are where a lot of nitrate fertilizers fall short, or where suppliers cut corners. I’ve seen generic nitrate fertilizers that only have iron and zinc, missing boron or molybdenum—and when a grower’s cauliflower crop starts curdling because of a boron deficiency, they blame the nitrate fertilizer, not the fact that the formula didn’t include the micronutrient it needed. That’s why every nitrate water-soluble fertilizer we manufacture includes the full suite of micronutrients, chelated for maximum availability. Chelation is important because micronutrients like iron bind to soil particles easily, and in water-soluble formulas, they can precipitate out if not chelated. We use EDTA and DTPA chelates that have been proven to stay in solution even in hard water, which is a huge win for growers in areas with high mineral content in their irrigation water.
Now, let’s get into the science of nitrate vs. other N forms, because that’s why our customers choose nitrate-based formulas over others. Nitrate is an anion, meaning it moves freely with water in soil or growing media—so it’s available to plants quickly, especially in hydroponic systems where nutrient solution is recirculated. Ammonium, the other common N form, is a cation that sticks to soil particles, so it’s slower to become available. For crops like lettuce or strawberries that have fast growth rates and short growing cycles, nitrate is ideal because it doesn’t require microbial activity in the soil to convert it to a usable form—something that’s a plus for both soil-based and soilless production. But does that mean nitrate fertilizers are missing nutrients? No—because the full nutrient profile we design includes everything else plants need to complement that fast-acting N.
That said, I’ll be honest: not all nitrate water-soluble fertilizers are created equal. There are cheap, low-grade formulas on the market that only have 2-3 macronutrients and a few micronutrients, leaving out things like sulfur or boron. I had a customer a few years back who switched to a bargain nitrate fertilizer for his bell pepper crop, and within a month, his leaves started yellowing between the veins. It turned out the formula didn’t have sulfur—sulfur is needed to make amino acids, and without it, plants can’t produce proteins, leading to stunted growth. He came back to us, and after switching to our pepper-specific nitrate formula, his yields went up 18% that season, because he was getting all the nutrients he needed in one application, no extra additives.
Another point people often ask about is soil health. A common misconception is that nitrate fertilizers contribute to soil degradation, but that’s only if they’re used without balancing all nutrients. Nitrate itself doesn’t harm soil—it’s the nutrient imbalance that comes from using incomplete fertilizers that do. Our nitrate formulas include magnesium, which supports chlorophyll production, and sulfur, which feeds beneficial soil bacteria. We also recommend that growers do a soil test every season to adjust their application rates, because even the best fertilizer can’t fix a pre-existing soil deficiency. For example, if a grower’s soil already has high iron levels, they can reduce the iron in our formula to avoid over-application, which is a flexible option that our competitors often don’t offer.
Let’s talk about crop-specific formulations, because that’s where our line stands out. We don’t make a one-size-fits-all nitrate fertilizer. For leafy greens like spinach or kale, our formula has higher nitrogen (nitrate, of course) and lower phosphorus, since leafy growth is the priority. For fruit crops like grapes or citrus, we have a nitrate formula with higher potassium and calcium to support fruit development and reduce issues like fruit cracking. For hydroponic growers, we have a formula that’s pH-stable in nutrient solutions, so they don’t have to adjust the pH constantly, which saves time and reduces waste. Each of these formulas includes all essential nutrients, tailored to what that specific crop needs at different growth stages. For example, our tomato formula has extra molybdenum during flowering, because molybdenum helps with nitrogen fixation and is critical for fruit set—something many generic nitrate formulas skip entirely.
I also want to address a common question from organic growers: can nitrate water-soluble fertilizers be part of an organic program? Most of our products are conventional, but we do have a line of organic nitrate water-soluble fertilizers that use nitrate from calcium nitrate derived from mined limestone, combined with organic micronutrients from seaweed extracts and bone meal. This line has all essential nutrients, meets organic certification standards, and works for both soil and hydroponic organic production. I’ve had organic lettuce growers tell us that our organic nitrate formula gives them the same yield as their previous conventional fertilizer, without the risk of heavy metals or synthetic additives.
Now, let’s get back to the original question: does nitrate water-soluble fertilizer contain all essential nutrients? The short answer is, if it’s a high-quality, properly formulated nitrate fertilizer from a reputable supplier, yes. But it’s not just about listing the nutrients on the bag—it’s about making sure they’re in forms plants can absorb, balanced for the crop, and free of contaminants that can harm soil or plants. As a supplier, we test every batch of our nitrate water-soluble fertilizers at a third-party lab to verify nutrient content and purity. We don’t cut corners on sourcing ingredients, even if that means our products are slightly more expensive than the bargain ones. When you factor in higher yields, fewer crop issues, and less time spent adding separate nutrient additives, our products actually save growers money in the long run.
I’ve been in this industry long enough to see trends come and go. Ten years ago, everyone was talking about urea fertilizers, then ammonium-based formulas, and now nitrate-based ones are growing in popularity because of their efficiency. But the number one complaint we still hear from growers is that they have to buy 3-4 different fertilizers to get all the nutrients their crops need. That’s the gap our nitrate water-soluble fertilizer line fills. We designed it so a grower can pick up one bag, do a soil or water test to adjust the rate, and know they’re supplying all 17 essential nutrients their plants need from germination to harvest.
If you’re a grower who’s been struggling with incomplete fertilizers, crop deficiencies, or high input costs from buying multiple nutrient products, I’d encourage you to reach out to us. We don’t just sell fertilizer—we work with you to figure out the right nitrate water-soluble formula for your specific crop, growing medium, and region. Whether you’re a small urban hydroponic farmer or a large commercial vegetable operation, we can help you optimize your nutrient program with a product that includes all the essential nutrients your plants need to thrive.
Nitrate Water-soluble Fertilizer Reference
- Mallarino, A. P. (2019). Nutrient availability and fertilizer use for row crops. Journal of Agronomy and Crop Science, 205(3), 247-258.
- Santos, B. R., et al. (2021). Micronutrient chelation forms and their availability in soilless cultivation systems. Scientia Horticulturae, 287, 110298.
- Zhang, L., et al. (2020). Nitrate-based fertilizers: Role in plant nutrition and environmental sustainability. Agriculture, Ecosystems and Environment, 298, 106927.
Yuncheng Tianhua Chemical Co., Ltd.
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