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Soil & Fertility

Home » Crop Practices » Soil & Fertility
  • Liquid fertilizer jug beside tomato rows with a bar chart of 5 percent nitrogen, 5 percent phosphate, and 10 percent potash, twice as much potassium as nitrogen.

    5 5 10 Fertilizer: What It Feeds and How to Use It Right

  • 15-0-0 fertilizer is calcium nitrate, supplying roughly 15 percent nitrate nitrogen and 18 to 19 percent soluble calcium with no phosphorus or potassium

    15-0-0 Fertilizer: Uses, Rates, and Best Picks for 2026

  • A 5-5-5 blend supplies 5 percent nitrogen, 5 percent available phosphate, and 5 percent soluble potash by weight, so 20 pounds spread over 1,000 square feet delivers one pound of nitrogen

    5-5-5 Fertilizer: Rates, Timing, and Best Bags

  • 0 0 22 Fertilizer Rates and Uses

    0 0 22 Fertilizer: What It Is, When to Use It, and Best Picks

  • 16-4-8 fertilizer supplies 16 percent nitrogen, 4 percent phosphate, and 8 percent potash, and 6.25 pounds spread over 1,000 square feet delivers one pound of nitrogen

    16-4-8 Fertilizer: Rates, Timing, and Best Picks for 2026

  • Fish Emulsion Fertilizer 5-1-1 Rates, Timing, and Top Picks

    Fish Emulsion Fertilizer 5-1-1: Rates, Timing, and Top Picks

  • 18-24-12 fertilizer is a starter grade with 18 percent nitrogen, 24 percent phosphate and 12 percent potash that drives root growth in new seedings

    18 24 12 Fertilizer: What It Is, When to Use It, and Top Picks

  • 0 0 60 Fertilizer Rates, Timing, and Crop Fit Explained

    0 0 60 Fertilizer: Uses, Rates, and Best Bagged Picks

  • Organic granules supply 4 percent nitrogen, 4 percent phosphate and 4 percent potash, spread at about 5 pounds per 100 square feet.

    4-4-4 Fertilizer: Rates, Timing, and Top Picks

  • 21 0 0 Fertilizer Rates and Uses

    21 0 0 Fertilizer: What It Is, Uses, and Rates for 2026

  • Coated 14-14-14 fertilizer prills worked into garden soil next to a chart showing 14 percent nitrogen, 14 percent phosphate and 14 percent potash releasing over three to four months.

    14 14 14 Fertilizer: Rates, Timing, and Best Bags

  • A 50 pound bag of 10-20-20 fertilizer holds 5 pounds of nitrogen, 10 pounds of phosphate, and 10 pounds of potash.

    10 20 20 Fertilizer: What It Feeds, When to Use It, and Top Picks

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