Influence of meteorological conditions on the irrigation scheduling of the determinante tomato variety “Nikolina”F1
Keywords:
drip irrigation; irrigation regime; tomatoes; weather conditionsAbstract
Experimental studies were conducted in 2017-2018 on the four-stage block method with tomatoes grown on Chromic Luvisols of experimental field Chelopechene to the Institute of Soil Science, Agrotechnology and Protection of Plants “Nikola Pushkarov”, Sofia. Tomatoes are a determinant “Nikolina”F1 variety grown at 100% and 50% irrigation rate using drip irrigation technology. Conventional fertilizers nitrogen, phosphorus and potassium are the most common in practice. The fertilizer norms N20P12K20, are determined according to the content of the main chemical elements in the soil and are submitted twice through different phases of development. A 60-year series of outdoor air and precipitation data for the period 1958-2018 was considered and the security was determined. With regard to air temperature both the years 2017 and 2018 are characterized as very warm with a provision of 6,13% and 7,78%. In terms of precipitation 2017 is very dry with a guarantee of 90,56% and 2018 is wet with a guarantee of 1,16%.
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