The influence of grafting seedlings on plant productivity and tomato yield

Monokultura i suženi plodored kao dominantni način uzgoja povrća u zaštićenim prostorima imaju za posljedicu izraženu akumulaciju biljnih štetočinja u tlu koje mogu ugroziti nastavak proizvodnje te u značajnoj mjeri povećati potrebe za primjenom kemijskih pripravaka. Probleme uzrokovane uzgojem u suženom plodoredu moguće je izbjeći primjenom hidroponskog načina uzgoja, što je ekonomski opravdano pri obimnijoj proizvodnji, dok se problemi uskog plodoreda na manjim površinama mogu izbjeći uzgojem pojedinih vrsta povrća sadnjom cijepljenih presadnica. Osim značajnije tolerantnosti na bolesti i štetnike koji se prenose tlom, zbog jače bujnosti podloga cijepljene biljke u pravilu daju veći rani i ukupni prinos. Da bi se utvrdila kompatibilnost između pojedinih podloga i najčešće uzgajanih hibrida rajčice u zaštićenim prostorima i procjene produktivnosti biljaka i prinosa rajčice uzgojene iz cijepljenih presadnica, tijekom 2009. godine u Visokom gospodarskom učilištu u Križevcima provedena su istraživanja čiji su preliminarni rezultati obrađeni u ovome radu.Monoculture and narrow crop rotation as the dominant vegetable growing method in protected spaces have an expressed accumulation of pests in the soil as the consequence. They can jeopardize the continuation of production and significantly increase the needs for applying herbicides in their suppression. The problems caused by cultivation in a narrow crop rotation are possible to be avoided by using a hydroponic cultivation method, which is economically justified in a larger production, whereas the problems of a narrow crop rotation on smaller areas can be avoided by cultivating certain vegetable species by planting grafted seedlings. Except for the more significant tolerance toward the diseases and pests which are transmitted by soil, grafted plants give a bigger and early total yield as a rule because of a bigger lushness of grafted plant’s media. In the goal of determining compatibility between individual media and the most frequently cultivated tomato hybrids in protected spaces, as well as estimating plant productivity and the yield of tomato cultivated from grafted seedlings during the year of 2009 in College of Agriculture in Križevci, researches were conducted and their preliminary results were processed in this paper