Celery is a heavy feeder so unless the soil is extremely fertile, it normally requires the application of large quantities of nutrients. Up to 100 MT/ha may be applied but keep nitrogen levels under control. Soil pH should be maintained in the range 6.0–6.8 (preferably above 6.5). Lower pH levels are tolerated on peat soils. Celery has a high nitrogen requirement. Generally, apply ~66% of the nitrogen at planting time and the remainder- side-dressed by 2-3 applications. Consider the nitrogen in legume sod and manure applications since "black-heart" syndrome (due to calcium deficiency) can be aggravated by over-applied nitrogen. Phosphorus should be broadcast preplant in moderate applications. Sandy-loam soils may be low in potash, so, on these soils incorporate the potash preplant, and by side-dressing.
Agroleaf Power Magnesium
Agroleaf Power Magnesium contains NPK, MgO and SO3. It cures and prevents magnesium deficiencies found in soils like: acidic, light and sand. It also increases photosynthesis and chlorophyll creation. It is great to use for crop recovery, stress relief and cell stretching.
Agromaster 19-5-20+4MgO | 2-3M
Agromaster High N / High K delivers enough controlled release nitrogen (34%) to ensure continuous feeding for 2 – 3 months. The high potassium levels encourage an increase in the size of fruits and vegetables. The magnesium content increases photosynthesis and plant energy.
Agromaster 12-5-19+4MgO | 2-3M
Agromaster High K delivers enough controlled release nitrogen (32%) to ensure continuous feeding for 2 – 3 months. The extra potassium levels increase the size and number of fruits and vegetables that crops produce. The added magnesium content increases photosynthesis and plant energy.