Influence of supplimentary fertilization on status of soil fertility and production, at a cropof potatoes in position belonging to TCE 3 Brazi, Girov, Neamt county

Abstract

Fertilization of soils is a very important agrochemical measure,in the chainof the technological links of a culture. The harmonization of the use of fertilizers in the ground, plant and cultivation technology and agronomic efficiency, are steps required in the case of usingcrops in an intensive system. The potato produced in the appropriate climate zones, is one of the cultures that have a favourable response to fertilization. The paper presents results of a study using conventional fertilizers as well as additional fertilizer on a crop of potato. The results showed that together with basic fertilization, the additionalfertilization with a complex of fertilizers administered radicularlyimproved the fertility of the soil, providing nitrogen-form equivalent to an average towards the normal; theamount of phosphorus digestible and assimilable potassium isnormal levels towards higher level.But the production isinfluenced by the foliar fertilizers, situated in the case of the agro-fond160-120-95 kg / ha a.s. NPK at 34,570 kg for Fertcomplex to 34,400 forKristalon. The maximum productionis reached on the same agrofond of fertilization,in theversion of combined administration of phasial, root and foliar fertilization, i.e. in the variant 16+20 + 18+46 + Kristalon.