Biochemical parameters of tomato under chemical fertilizers

Abstract

Fertilizers play an important role in providing nutrients to plants and in sustaining an optimal crop yield. In general, plants need three major elements for their optimal growth and development: nitrogen (N), phosphorus (P) and potassium (K). Most of the modern chemical fertilizers contain one or all of these nutrients. Other important elements are sulphur, magnesium and calcium. Micronutrients such as iron, chlorine, copper, manganese, zinc, molybdenum and boron are needed just in small amounts, but are equally important for the plants. In this context, at the UASVM Iasi was organized an experiment to obtain important information regarding the effects of chemical nutrients on tomato biochemical indicators.The water content, the minerals and the tannin content from fruits varied under different chemical fertilizers.