Acid deposition and its effects were studied by analysing the chemistry in precipitation, stream water, soil water and soils in two catchments in Hunan. One site, Linkesuo (denoted LKS), is on the outskirts of Changsha, the provincial capital of Hunan, the other (Bailutang, denoted BLT) on the outskirts of Chenzhou in southern Hunan. Volume-weighted average pH values and sulphate concentrations...

Abstract To investigate the role of cow dung in soil reclamation and bio assimilation along with accumulation heavy metals earthworm (P. posthuma) (N=900) earthworms were used treatment groups CD-soil mixture different proportion designed. Nonlethal doses lead acetate cadmium chloride added groups. Mature P. posthuma released each experimental pot maintaining favorable conditions. The pH, carbo...

The aim of the present study was to analyse physicochemical properties and chemical composition soil after years applying varied tillage systems pre-crops. field experiments were carried out in Lipnik Poland. experiment conducted over 25 years, with factor I–3 systems: ploughing (A), ploughless (B) direct sowing (C), II-pre-crop–1–faba bean, 2–sugar beet. Simplified used, increased acidity foun...

The use of glyphosate-based herbicides (GBHs) in industrial agriculture has intensified the past decades, causing a growing concern about occurrence and spatial distribution glyphosate its principal metabolite, aminomethylphosphonic acid (AMPA), environment. In 2014, AMPA content was measured 45 soils from St. Lawrence Lowlands (Quebec, Canada) before seeding at harvest soybean field crops usin...

field study was conducted at five villages of botswana namely, tsabong, tshane, mathathane, motlhabaneng and tsetsejwe during the periods of june to august 1999 and june to august 2000. the objective of the study was to assess and compare the soil physicochemical properties of soils at the five villages and to study the effect of cultivation on some soil physical properties. parameters measured...

C.2 Exchangeable correlation structure Suppose that, among the coordinates of Yi | μ, τi, σ i , a set of variables is exchangeable in the sense that the correlation matrix C remains unchanged under any permutation of these variables. In this case, the following proposition shows that an optimal D based on the correlation matrix C = V−1/2ΣV−1/2 has equal diagonal elements at the exchangeable coo...

There is limited research comparing nutrient removal in concentrated and dilute waste streams. Accordingly, the goal of this was to study effect dilution on ammonium potassium from real hydrolyzed urine using natural zeolites. The performance two zeolites, clinoptilolite chabazite, studied compared batch equilibrium experiments at four levels defined as volume divided by total solution (express...

Regenerative agriculture (RA) is gaining increasing recognition as a plausible solution to restore degraded agroecosystems. In Mediterranean drylands, RA at incipient state of development and has been limitedly adopted by farmers, partly due the lack empirical evidence on its impacts. To support large-scale adoption, we carried out participatory monitoring project in southeast Spain, involving ...

Abstract A multi-methodical characterization of a sauconite (Zn-bearing trioctahedral smectite) specimen from the Skorpion ore deposit (Namibia) was performed by combining X-ray powder diffraction (XRPD), cation exchange capacity (CEC) analysis, differential thermal analysis (DTA), thermo-gravimetry (TG), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM-...