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Ideal growing conditions are needed to produce
high quality seed. Tomatoes grow best in the dry season under
day temperatures of 21-25°C and night temperatures of 15-20°C.
Vines will struggle to set fruit if temperatures exceed 30°C. |
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Humidity is an important factor. Humidity
levels higher than 60% at the time of fruit maturity will increase
disease problems (bacterial spot disease is shown at left) and
reduce seed yields. Seed production during the rainy season generally
leads to low yields and poor seed quality. |
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Avoid planting your tomato seed crop in a
field previously planted with tomato, pepper, eggplant, or other
Solanaceous crops. This will prevent the build-up of diseases
and insects. Growing tomato after paddy rice reduces the incidence
of diseases and nematodes. |
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Optimum soil pH for tomato is 6.0 to 7.0;
disorders such as blossom end rot are common if soil pH is lower
than 5.5. |
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