Tomato

Climate And Soils

Climate Soils

Climate

  • The tomato is a warm-season crop. It is not only sensitive to frost but it does not thrive at low, non-freezing temperatures.
  • High temperatures, accompanied by low humidity and dry winds, frequently damage floral parts and there is no fruit-set.

  • Tomato pollen grains germinate best at 29.4° C, nearly as well at 21.1°C, poorly at 10° C and very poorly at 37.3° C.
  • The crop does well under an average monthly temperature of 21° C to 23° C but commercially it may be grown at temperatures ranging from 18° C to 27° C.
  • Temperature and light intensity affect the fruit-set, pigmentation and nutritive value of the fruit.
  • Both high and low temperatures interfere with the setting of fruit.
  • The tomato withstands drought fairly well but fruits are subject to blossom end rot and to growth cracks if moisture supply follows drought.
  • It cannot be grown successfully in regions of higher rainfall.

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Soils

  • The tomato grows on practically all soils from light sandy to heavy clay.
  • Light soils are good for an early crop, while clay loam and silt-loam soils are well suited for heavy yields.
  • The best soil for tomato is rich loam, with a little sand in the upper layer, and a good clay in the sub-soil.

  • Good texture of the soil is of primary importance.
  • Tomatoes do best in a soil that has a soil reaction from pH 6.0 to 7.0. If the soil is acidic liming is advocated.

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