Tehnologije gnojidbe vinove loze za smanjenje negativnog učinka stresnih agroekoloških uvjeta | Applied grapevine fertilization technology to reduce the negative impact of stressful agroecological conditions

Croatian. Zbog značajne promjene klimatskih uvjeta u posljednjih nekoliko desetljeća tijekom vegetacije vinove loze javljaju se brojni nepovoljni agroekološki uvjeti. Prije svega je to rast temperature zraka i nedostatak oborina, koji imaju negativan učinak na visinu prinosa i kvalitetu grožđa. Zbog nepovoljne strukture vinogradarske proizvodnje u Hrvatskoj primjena natapanja vinograda je vrlo malo zastupljena. Da bi vinogradari imali uspješnu proizvodnju grožđa i tijekom nepovoljnih agroekoloških uvjeta preporučuju se dodatne mjere u tehnologiji gnojidbe vinove loze. To je prije svega primjena biostimulatora, ali isto tako i ostalih važnih hranivih elemenata kao što su magnezij, bakar i kalij. Dodatne mogućnosti u borbi protiv stresnih uvjeta pružaju mogućnost primjene preparata na bazi silicija ili gline, te primjena posebnih polimera koji zadržavaju vodu u tlu tijekom sušnog ljetnog perioda. Redovnom primjeno ovih dodatnih mjera moguće je učinkovito smanjiti negativan utjecaj visoke temperature zraka i nedostatka oborina za uzgoj vinove loze.

English. The significant change in climate in the last few decades made unfavourable agroecological conditions during the winegrape growing season. First, the increase in air temperature and the lack of precipitation notably reduces the grapes’ yield and quality. Due to the unfavourable structure of viticulture production in Croatia, with a lot of small vineyards, the application of vineyard irrigation is very rare. For winegrowers to have successful grape production even during unfavourable agroecological conditions, additional technology of grapevine fertilization is recommended. Primarily, biostimulators are used, but other important nutritional elements such as magnesium, copper, and potassium are also effectively used. Additional possibilities against stressful conditions are provided by the possibility of applying products based on silicon or clay and using special polymers that retain water in the soil and root zone during the dry summer period. Applying all these additional technologies, it is possible to effectively reduce the negative impact of high air temperature and lack of precipitation on grapevine cultivation.