Ecosystems have been affected by series of activities that occurred on lands. The effects land use change the physical and chemical properties soil in Oba Hill Forest Reserve studied using standard instrumentation techniques. Results obtained showed texture soils ranged from loam to sandy while pH four types 4.92 (acidic) 7.80 (alkaline).The bulk densities are natural forest (1.01 g/m3), teak p...

This article discusses the development of compositions new, effective, water-soluble fixatives-reagents based on local raw materials and industrial waste. A technology has been developed for obtaining using new types complex additives-fixers hydrolyzed polyacrylonitrile polyelectrolyte, which can be recommended implementation when fixing saline soils sands Aral region. Chemical reagents have se...

An experiment was conducted to study the earthworm diversity and its influence on soil enzyme activities in organic, sustainable conventional farming systems state of Puducherry. A total five species namely Drawida willsi, scandens, Lampito mauritii, Perionyx excavates Eudrilus eugeniae were present sites. Four found organic farming. Earthworm diversity, population, dominance, biomass significa...

azotobacter is a gram negative, aerobe, chemo-organotroph with the, polymorphism including rod, cocci and ovoid forms. this bacterium belongs to gama-proteobacteria class, pseudomonaceae family with 7 species. it cannot produce spores but forms cyst. azotobacters’species lives in different regions from tropicals to poplars in ph 3-9. however, it can be fined mainly in alkaline and natural soils...

solution potassium (so-k) and exchangeable k (ex-k) extracted by nh4oac are the major sources of potassium used by plants, but initially non-exchangeable k (nex-k) can also contribute significantly to plant uptake. perennial ryegrass (lolium perenne, cv. roper) was successively planted in ten surface soil samples with different clay mineralogical composition belonging to five soil types to dete...

Fe deficiency compromises both human health and plant productivity. Thus, it is important to understand plant Fe acquisition strategies for the development of crop plants which are more Fe-efficient under Fe-limited conditions, such as alkaline soils, and have higher Fe density in their edible tissues. Root secretion of phenolic compounds has long been hypothesized to be a component of the redu...

Phosphatases are diverse groups of enzymes that deserve special attention because of their significant roles in organic phosphorus (OP) mineralization to inorganic available forms (Pi). This work 1) compared the catalytic potentials of commercially acid phosphatase from wheat germ, sweet potato, and potato, and alkaline phosphatase from E. coli; 2) demonstrated that the rate of hydrolysis, cata...