Rhubarb - Fertility

Nitrogen

See Table 9-74, Rhubarb Nitrogen Recommendations.

Table 9-74. Rhubarb Nitrogen Recommendations

¹As much as 100 kg/ha (90 lb/ac) of the nitrogen recommendations may be applied through the irrigation system aftr harvest or in July.

Phosphorus

Test the soil to determine phosphorus requirements. Where the soil test values are 61 mg P per L soil (ppm) or higher, rhubarb plants are unlikely to respond to additional phosphate applications. For soils testing lower than 61 mg P per L soil (ppm), see Table 1-10, Phosphorus Requirements: Vegetables on Mineral Soils, on page 12.

Band the phosphate below the crowns at planting.

Potassium

Test the soil to determine potassium requirements. Where the soil test values are 181 mg K per L soil (ppm) or higher, rhubarb plants are unlikely to respond to additional potash applications. For soils testing lower than 181 mg K per L soil (ppm), see Table 1-12, Potassium Requirements: Vegetables on Mineral Soils, on page 14.

Related Links

• Publication 363 - Vegetable Production Recommendations

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