Calculate NPK

Step 3 — Irrigation and Watering

How is this area watered? Drip or soaker lines Overhead sprinklers Hand watering with hose Mostly rainfall only

How often does this area usually get water in the growing season? Daily or every 1–2 days Every 3–4 days Once a week or less

Step 4 — Organic vs Conventional Approach

Which nutrient approach would you like to calculate? Organic — emphasizes soil-building, compost, manure, worm castings, and slow-release granular fertilizers designed not to burn, with smaller incremental feedings. Conventional — uses synthetic salt-based fertilizers for faster measurable nutrient additions; common in commercial row crops, lawns, golf turf, and intensive container systems.

Both approaches can produce healthy gardens. Organic focuses on long-term soil structure and biology; conventional focuses on precise nutrient control and immediate plant response.

Step 5 — Amendment or Fertilizer to Use

Organic Options (Low Burn Risk)

Compost — soil building, long-term biology
Manure — slow release, N-limited
Worm castings — microbial inoculation, trace NPK
Granular NPK — soil (low burn, slow release)
Soluble — foliar or drench (moderate burn potential)
Granular + soluble rotation (balanced feeding)

Conventional Options (Medium to High Burn Risk)

Granular NPK — soil (medium burn, measurable NPK)
Liquid NPK — foliar or drench (higher burn risk)
Granular + liquid rotation (precision + immediate response)

*Burn risk refers to leaf burn or root burn potential when applied at full label rates without adjustment for irrigation or soil type.

Step 6 — Conservative Nutrient Advisory

Based on your selections, we will estimate a conservative nutrient strategy that avoids burn, matches irrigation style, and avoids over-feeding.

No recommendation generated yet.

*Conservative strategy prioritizes steady plant uptake, minimal salt injury, and lower leaching losses.

Step 8 — Save or Send Recommendation

Choose how you'd like to keep your advisory for reference:

*PDF and email delivery will include the conservative nutrient strategy along with any soil or irrigation notes you've provided.

Soil NPK Advisory & Application Helper

Step 1 — Current Soil NPK Status

Step 2 — Crop and Area

Step 3 — Irrigation and Watering

Step 4 — Organic vs Conventional Approach

Step 5 — Amendment or Fertilizer to Use

Step 6 — Conservative Nutrient Advisory

Step 8 — Save or Send Recommendation