Tomato Nitrogen Uptake and Partitioning

Crops:

Almonds

Barley

Broccoli

Cauliflower

Citrus

Corn for Grain

Corn for Silage

Cotton

Grapevines

Lettuce

Pistachio

Rice

Strawberries

Tomato

Walnut

Wheat

Seasonal N Uptake

Nitrogen uptake curve of processing tomatoes grown in research plots at UC Davis and in commercial fields. Uptake was determined by harvesting the aboveground biomass at different times during the season (Hartz and Bottoms, 2009).
Early in the season, N uptake was low. The period of low uptake is shorter with transplants compared to seeds. The N uptake remained relatively high until harvest.

Nitrogen Partitioning

Approximately 70% of the total aboveground N was in tomatoes, with the rest being in the vines (Hartz and Bottoms, 2009).

Nitrogen Removed at Harvest

Yield and N removed at harvest of processing tomatoes grown in research plots at UC Davis. The seasonal N application was 190 lbs.

Links

Tomato Fertilization Guidelines

References

Hartz, T.K., Bottoms, T.G., 2009. Nitrogen requirements of drip-irrigated processing tomatoes. HortScience 44, 1988–1993.