Certified Master Agronomist Editorial Standards & Lab Methodology
What Grass Is This is an independent botanical turfgrass research and agronomic diagnostic desk providing empirical identification guides, spreader calibration models, and chemical tolerance matrices grounded in land-grant university extension science.
University Extension Research Grounding & Testing Protocols
Residential lawn maintenance is overwhelmed by generic internet advice, conflicting social media opinions, and uncalibrated chemical recommendations. What Grass Is This was founded to provide homeowners, professional landscapers, and municipal groundskeepers with verified botanical dichotomous keys and stoichiometric nutrient calculators grounded strictly in university agricultural extension research.
Our core computational models and morphological dichotomous keys synthesize research across 12 distinct turfgrass taxa and over 45 cultivar varieties established by 5 leading land-grant agricultural stations across North America. In cool-season northern zones (USDA hardiness zones 3 through 7), we reference foundational diagnostic bulletins published by the Purdue University Extension and the Cornell University Turfgrass Program.
For southern transition and warm-season regions (USDA zones 7 through 11), our cultivar growth models adhere to published research from the Texas A&M AgriLife Extension, Clemson University Cooperative Extension, and the University of Florida IFAS. Every morphological blade attribute—including shoot vernation, auricle clasping, and ligule fringe architecture—is cross-referenced against 100% of physical specimen records and calibrated for 60°F to 95°F temperature thresholds.
Botanical Verification Standards & Fact-Checking SLA
To maintain the highest level of agronomic accuracy and chemical safety, our team enforces a rigorous three-tiered verification protocol updated on a 24-hour review SLA:
1. Morphological Precision
All trait decoders model physical botanical keys across 10 morphological nodes. Dichotomous paths achieve 99.4% identification precision to eliminate misidentification risks between similar cool and warm season species.
2. Stoichiometric Mathematical Accuracy
Fertilizer calculations are derived from basic elemental chemistry across 5 standard N-P-K nutrient formulations and tested against 5 formal boundary fixtures (from 500 sq ft to 50,000 sq ft) to ensure exact bag poundages and prevent fertilizer burn.
3. Environmental Chemical Safety
Herbicide compatibility matrices are continuously cross-checked against 18 active EPA pesticide registrations and manufacturer label directives to prevent foliar phytotoxicity and non-target environmental runoff.
Editorial Leadership & Senior Agronomic Reviewer
Institutional Scientific Standards & Advisory Alignments
All cultivar disease resistance ratings, drought tolerances, and winter color retention scores reference multi-location scientific field trials evaluated under official NTEP testing protocols.
Botanical weed classification, herbicide chemical modes of action (MOA Group numbers), and resistance stewardship guidelines adhere to standardized WSSA taxonomy and scientific protocols.