Research on Soil Resources of the NorthWest Part of the Cracau-Bistrita Depresion for Sustainable Agriculture

Abstract

Cracau-Bistrita Depression it belongs to the investigated it is a unique physical geographical unit within Moldavian Subcarpatians, which occupies the center of the groove subcarpathic between Moldova and the Trotus Rivers. In geological terms we refer territory corresponds to a restricted part of the Moldavian Platform appears as an extension to the southwest of Russian platform. Geological rocks that are part of the northwest Cracau-Bistrita Depression parent materials generated relatively differentiated by features and nature that can be eluvial, colluvial and alluvial. After compiling size, they are made of clay and marly clay, sand, alluvial deposits. The main pedogenetic processes which led to differentiation and the formation horizons of soil the soil cover of the northwest Cracau-Bistrita Depression may be mentioned bioaccumulation, clay migration, argillisation, gleyzation and stagnogleyzation. Ensemble pedogenetic factors and pedogenetic processes specific area led to the formation of a coating on the ground floor consists of relatively varied protisols, cernisols, cambisols, luvisols, hidrisols and antrisols. Of these, the largest share is occupied by cernisols. Arable land suitability is limited by several factors, of which the most important are considered the soil, topography and drainage. So outstanding were six classes of land: from those with very good suitability for field crops, without restriction, to land that can be used only for forests as those from nearby watercourses due to flooding. Misuse of the land has led to extreme natural phenomena, considered risks that go to produce immense damage by reducing agricultural production. I particularly physical, chemical and complex risks. Most worthy of notice covers the main physical and chemical properties of soil and land degradation by destroying the soil. In order to eliminate the negative effects of limiting factors of agricultural production, reducing risk and thereby improving the productive potential of the northwest Cracau-Bistrita Depression were proposed a series of works agropedoameliorative such as regulation of water and embankment works, paper land on the contour and avoiding weeding plant cultivation on slopes, erosion control works and avoid prolonged grazing early spring or fall, ripping papers for land compacted or affected by excess moisture.

Analysis of Chemical Properties of Forest Soils in Dobrogea Plateau

“…In Dobrogea Plateau phaeozem contain more than 5% humus (5.20%) this characteristic beeing found also in phaeozem in Suceava Plateau where analitical data show that these soils are very rich in humus [14]. Instead eutric cambisol in agriculture lands from North-west part of the Cracau-Bistrita depresion is poor in humus and nutrients and low fertility [15].…”