Chicken Manure Fertilizers Compared: Perfect Blend, Chick Magic, Harmony and SIGMA Bio

Shopping for chicken manure pellets or comparing manure-based organic fertilizers? Perfect Blend, Chick Magic, Harmony and SIGMA Bio offer different nutrient profiles and formulation approaches. The useful comparison starts with the exact product, not just the brand name or the word “organic.”

Here we compare the supplied Perfect Blend Biotic Organic 4-4-4, Chick Magic Ag 5-3-2 and Harmony 5-4-3 labels with SIGMA Bio 4-4-4, 5-3-2, 2-4-2 and 6-2-6 information. The emphasis is on what the BIO package contributes beyond fertilizer nutrition.

Compare nutrient analyses first

These figures apply to the specific products reviewed. Check current labels before purchasing.

Perfect Blend 4-4-4 versus SIGMA 4-4-4 Bio

Both products have a 4-4-4 NPK analysis, but matching those three numbers does not make their formulations identical. Perfect Blend’s supplied label lists 7% calcium and describes its proprietary Complex Nutrient Enabling Fertilizer (CNEF) process as providing complex nutrition to soil microbes involved in breaking down minerals for plants.

SIGMA 4-4-4 Bio lists 6% calcium, 3% humic acids and specified quantities of beneficial bacteria, endomycorrhizae and Trichoderma. These are different aspects of a biological growing program: nutrition intended to support existing soil microbes and specified biological additions alongside fertilizer nutrition. The supplied Perfect Blend label does not state added-organism counts; that does not establish an absence of microorganisms.

Chick Magic 5-3-2 versus SIGMA 5-3-2 Bio

Chick Magic Ag and SIGMA 5-3-2 Bio share the same NPK ratio. Chick Magic’s supplied label lists dehydrated chicken manure as the nutrient source, with 9% calcium, 3% water-soluble organic nitrogen and 2% water-insoluble nitrogen.

SIGMA 5-3-2 Bio’s label lists 7% calcium and 0.1% iron, with 1.2% water-soluble nitrogen and 3.8% slowly available water-insoluble nitrogen. Plant nutrients are derived from processed poultry manure, bone meal, feather meal and sulfate of potash. Its soil-amending ingredients include 3% humic acids derived from leonardite, 2,800,000 CFU/lb beneficial bacteria, 6.1 endomycorrhizal propagules/lb and 480,000 CFU/lb Trichoderma.

For growers comparing these two 5-3-2 fertilizers, Chick Magic offers a higher calcium percentage, while SIGMA provides a documented package of biological additions alongside its nutrient blend. The different nitrogen fractions are also worth considering. Neither the calcium percentage nor the microbial specifications alone establish which will perform better for your crop.

SIGMA’s label specifies non-residential use only. Its vegetable directions call for incorporation 2–3 weeks before planting, at rates selected for the crop. Follow the complete label, site-specific nutrient plan and local restrictions rather than transferring rates between brands.

Where Harmony 5-4-3 fits

Harmony’s supplied label lists 5% nitrogen, 4% available phosphate, 3% soluble potash and 9% calcium, derived from poultry manure. Its nitrogen analysis includes 1.5% water-soluble and 3.5% water-insoluble nitrogen.

Harmony has a different NPK balance from all four SIGMA formulas discussed here. Compare it against your crop’s needs rather than substituting pound-for-pound. Its supplied label emphasizes organic nitrogen and gives turf, landscape and vegetable directions, but does not list added-organism counts.

SIGMA 2-4-2 Bio: a different nutrient balance with more listed biology

SIGMA 2-4-2 Bio supplies less nitrogen per pound than SIGMA 4-4-4 Bio, while retaining 4% available phosphate and providing 2% soluble potash. It also lists 10% calcium, 0.5% magnesium and 0.5% iron.

SIGMA 6-2-6 Bio: higher nitrogen and potassium, lower phosphate

SIGMA 6-2-6 Bio Fine Grade lists 6% total nitrogen, 2% available phosphate, 6% soluble potash, 5% calcium and 0.2% iron. Its reviewed product information lists processed poultry manure and bone meal as nutrient sources and describes a fine-grade micro-granular format in a 50 lb bag.

Compared with the 4-4-4, this formula provides higher nitrogen and potash concentrations with a lower phosphate concentration. It is worth considering when soil testing and crop requirements call for that balance, rather than a uniform NPK ratio. Lower phosphate is not zero phosphate and does not automatically establish compliance with local phosphorus restrictions.

The BIO package lists 3% humic acids, beneficial bacteria at 2,800,000 CFU/lb, endomycorrhizae at 6.2 propagules/lb and Trichoderma at 480,000 CFU/lb. That allows growers to evaluate a different nutrient balance while retaining specified biological additions.

Compare the documented BIO packages

The 2-4-2 lists twice the humic acid percentage and higher microbial quantities per pound than the other three formulas. Those microbial figures are not uniformly doubled. Compare the individual specifications rather than using a blanket “twice the biology” claim.

What BIO does—and does not—tell you

Feeding existing soil microbes and adding specified biological inputs are related but distinct formulation approaches. SIGMA’s documented bacteria, endomycorrhizae and Trichoderma quantities give growers additional specifications to evaluate alongside NPK.

Supporting soil microbes and adding biological inputs

Perfect Blend’s label describes its proprietary CNEF process as providing complex nutrition to soil microbes involved in breaking down minerals for plants. SIGMA 4-4-4 Bio, 5-3-2 Bio, 2-4-2 Bio and 6-2-6 Bio complement their nutrient blends with listed quantities of beneficial bacteria, endomycorrhizae and Trichoderma. For growers who want specified biological additions alongside fertilizer nutrition, that makes SIGMA Bio worth considering.

Supporting existing microbes is another part of the conversation. Our article, Microalgae and Soil Biology: The Science Behind Sigma MICROALGAE, explores SIGMA’s separate microbe-food option. These approaches address different aspects of a biological growing program; the labels alone do not establish which will perform better in a particular field.

SIGMA MICROALGAE Performance Microbe Food is described as a whole-cell, pasteurized liquid microalgae product intended to support microbial nutrition, rather than a live-algae inoculant. Follow each product’s application and compatibility guidance when considering it alongside a BIO fertilizer.

Humic acids are not living organisms. CFU and mycorrhizal propagule counts also measure different things, so they should not be combined into one biological-strength score.

Higher listed counts do not establish better crop performance. Response depends on storage, handling, moisture, soil conditions, crop compatibility and application practices. These specifications are not head-to-head trial evidence of superior yields or disease control.

Chicken manure pellets versus granular blends

The supplied competitor labels establish nutrient analyses and sources, but do not establish the physical grade of every product discussed. Confirm particle size with the supplier when you specifically need chicken manure pellets.

SIGMA 4-4-4 Bio Fine Grade is a fine, micro-granular grade 110 blend, rather than a straight manure pellet. SIGMA 6-2-6 Bio is also described as fine-grade micro-granular, while SIGMA 5-3-2 Bio is described as granular in its information sheet. Check the specific grade and equipment compatibility for each formulation instead of assuming the entire BIO range uses the same particle size.

Choose by nutrient need, then evaluate the biology

A 4-4-4 supplies 4 lb each of total nitrogen, available phosphate expressed as P₂O₅ and soluble potash expressed as K₂O per 100 lb of fertilizer. A 5-3-2 supplies 5, 3 and 2 lb respectively; a 2-4-2 supplies 2, 4 and 2 lb; a 6-2-6 supplies 6, 2 and 6 lb. These are concentration comparisons, not estimates of immediate nutrient availability.

Start with soil or growing-media testing and crop requirements. SIGMA 4-4-4 Bio offers balanced NPK with a documented biological package; SIGMA 5-3-2 Bio provides 7% calcium and a documented BIO package alongside its 5-3-2 ratio; SIGMA 2-4-2 Bio combines lower nitrogen concentration with higher listed humic acids and microbial quantities than the 4-4-4; SIGMA 6-2-6 Bio offers higher nitrogen and potash with lower phosphate concentration and a documented BIO package.

Perfect Blend, Chick Magic and Harmony remain relevant where their specific formulations fit the program. The BIO distinction is an additional purchasing consideration, not a reason to dismiss competing manure-based fertilizers.

Explore SIGMA Bio Organic Fertilizers, including 4-4-4 Bio Fine Grade, 5-3-2 Bio, 2-4-2 Bio and 6-2-6 Bio Fine Grade. Follow each product’s current label rather than transferring rates between formulas.

Reference information

Competitor specifications were transcribed from the supplied Perfect Blend Biotic Organic 4-4-4, Chick Magic Ag 5-3-2 and Harmony 5-4-3 label images. SIGMA 5-3-2 figures were verified against its product label and information sheet. Other SIGMA specifications were taken from the reviewed product information; the SIGMA 4-4-4 Bio Fine Grade label is also available for review.

Brand names identify the products compared. No affiliation or endorsement is implied.