Soil pH declined from 5.9 to 5.0 in 8 years beneath plantations of Eucalyptus saligna (Sm.) in Hawaii. In stands of Albizia falcataria, (L.) Fosberg, the soil pH change was more dramatic, declining from 5.9 to 4.6. We measured several components of soil acidity beneath four mixtures of the two tree species to gain insight on the processes responsible for the decline in soil pH. These components...

the occurrence of soil water repellency and its intensity were studied in three sites under pinus teada, petrocarya fraxinifolia and sombucus ebulus in talesh township, western part of guilan province. seventy nine undisturbed soil samples from 0–5 cm depth were collected for water repellency and water-soil contact angle to be determined in a dry season. soil water repellency was assessed using...

Soil balancing (SB), or base cation saturation ratio (BCSR), is a soil management approach that strives to maintain specific calcium (Ca) and magnesium (Mg) levels improve health, decrease pest problems, have better crops, increase crop yield. To achieve ideal of Ca Mg, BCSR practitioners apply gypsum (calcium sulfate) high-calcium lime (Hi-Cal lime) amendments, with the former increasing later...

the effects of dominant shrub species on soil organic matter (som), including total soil carbon (sc), total nitrogen (n) and particulate organic matter (pom) were studied in three stands differing in the type of shrub species, i.e. astragalus microcephalus (shrub), pteropyrum aucheri (shrub) and prangus uloptera (non-shrub).the stands were located in arid grasslands of north-western iran. for t...

This experiment target measuring soil properties (pH, EC and OC), nutrient (N, P, K S) the correlation study between availability. Six different locations in Havalbag block, Almora district of Uttarakhand, were sampled for (0-15cm depth). Nitrogen, Phosphorous, Potassium Sulphur examined using known conventional methods. Available Nitrogen was by alkaline KMnO4 method, extractable available CaC...

During the latter part of 1975 an investigation was conducted in the Natal Midlands to locate sites, representative of the main bioclimatic subregions, that would be suitable for sugar beet experiments. Soil acidity was identified as an important limiting factor in the majority of soils examined. A glasshouse study with sugar beet revealed a marked response to lime where soil pH values were les...

For crops to have good productivity, it is necessary adopt agricultural practices that ensure an adequate supply of water and nutrients, neutralize toxic elements in the soil, especially exchangeable aluminum, both arable layer subsurface. One these usually employed small medium large rural properties correction soil acidity, which aims, addition neutralizing provide calcium magnesium for plant...

Pengaruh kadar air terhadap kandungan C-Organik tanah dan keasaman pH dilakukan dengan mengukur menggunakan metode Walkley Black sedangkan penentuan pendekana analisis actual (H2O) pontesial (pH KCl). Kadar dalam sampel paling tinggi sebesar 20% 59,300%, keasamann H2O 3,114 KCl 1,759. Sedangkan rendah 13% 48,640%, 3,359 2,062. Kandungan (kadar air) di mempengaruhi tanah. Semakin besar maka sema...