Influence of vermicompost and mineral fertilization on nutrient status in tomato fruit

Lumbrikompost, glistinac, organsko gnojivo dobiveno preradom organskog otpada, stajskog gnoja i ostataka hrane, voća i povrća, korištenjem kalifornijskih crvenih glista sve se više koristi kao alternativa konvencionalnim gnojivima radi dugoročnog očuvanja plodnosti tla i ekosustava. Cilj ovog diplomskog rada bio je utvrditi status hraniva (N, P, K, S) u plodu i zelenoj masi rajčice s obzirom na primijenjenu mineralnu i organsku gnojidbu kao i utvrditi sadržaj hraniva (N, P, K, S, Cu, Fe, Mn, Zn, Ni) u primijenjenom glistincu. Poljski pokus s rajčicom 'St. Pierre' postavljen prema principu Latinskog kvadrata na crvenici u Vodnjanu sastojao se od tri tretmana: kontrolnog (bez gnojidbe), mineralne gnojidbe (NPK 5-20-30; 50 g/m2) i organske gnojidbe (100 g čistog glistinca uz sam korijen biljke). Rezultati ukazuju da je primijenjeni glistinac visokovrijedno organsko gnojivo u kojemu sadržaj hraniva varira od 13 mg Ni/kg do 47,2 g Ca/kg. Ukupni dušik u plodu rajčice značajno je varirao od 21,5 do 26,1 g/kg, a u zelenoj masi biljke od 26,1 do 27,0 g/kg. Ukupni sumpor u plodu rajčice bio je u rasponu od 1871 mg/kg do 2135 mg/kg pri čime su podjednaki utjecaj imala oba gojidbena tretmana, dok je u zelenoj masi biljke primjena glistinca rezultirala statistički najvišom količinom akumuliranog sumpora (4663 mg/kg). Ukupni kalij u plodu rajčice varirao je od 31,7 do 37,7 g/kg na čiju je varijabilnost bez značajnih razlika utjecala i mineralna i organska gnojidba, dok je u zelenoj masi biljke tretman s glistincem značajno pridonio usvajanju kalija (35,0 g/kg). Ukupni fosfor u plodu rajčice bio je pod značajnim utjecajem primijenjenog glistinca na čijem je tretmanu zabilježeno 5686 mg P/kg, dok je sadržaj ovog istog hraniva u zelenoj masi rajčice varirao od 1935 do 3099 mg/kg.Lumbrikompost, earthworm, organic fertilizer obtained by processing organic waste, manure and food residues, fruits and vegetables, using California red earthworms is increasingly used as an alternative to conventional fertilizers in order to to preserve soils and ecosystem. The aim of this thesis was to determine the status of nutrients (N, P, K, S) in the fruit and green mass of tomatoes due to applied mineral and organic fertilization as well as to determine the content of nutrients (N, P, K, S, Cu, Fe, Mn, Zn, Ni) in the applied vermicompost. The field experiment was set up according to the Latin square on terra rossa in Vodnjan and included three treatments: control (without fertilization), mineral fertilization (NPK 5-20-30; 50 g/m2 ) and organic fertilization (100 g of pure vermicompost along to the root of each plant) and test culture - tomato ‘’St.Pierre’’ variety. The results indicate that the applied vermicompost is a high-value organic fertilizer in which the nutrient content varies from 13 mg Ni/kg to 47.2 g Ca/kg. The total nitrogen in the tomato fruit varied significantly from 21.5 g/kg to 26.1 g/kg while in the green mass of the plant from 26.1 g/kg to 27.0 g/kg. The total sulfur in the tomato fruit was ranged from 1871 mg/kg to 2135 mg/kg, where both fertilization treatments had similar effect on S status u tomato fruit, while in the green mass the application of vermicompost resulted the statistically highest amount of accumulated sulfur (4663 mg/kg). The total potassium in the tomato fruit varied from 31.7 g/kg to 37.7 g/kg and variability was significantly affected by both form of fertilization, while in the green mass of the plant the treatment with vermicompost significantly contributed to potassium uptake (35.0 g/kg). The total phosphorus in the tomato fruit was significantly influenced by the application of vermicompost (5686 mg P/kg), while the content in the green mass of tomatoes varied from 1935 mg/kg to 3099 mg/kg