A new fertilizer technology developed at Penn State University offers several potential benefits for turfgrass cultivation. The new technology employs a phosphorus buffering system (PBS), which , maintains a steady phosphorus concentration in the soil solution over time. The PBS has the size and consistency of sand (Fig. 1) and can be mixed with any soil media. Once charged with phosphorus, the...

The present study aims to residual effects of composts (plant residues, animal residues and mixed) with and without inorganic fertilizers on spinach (spinicia oleracea L.) plants and soils. The obtained results showed that the finished compost of plant residues was high in germination index (GI) and low in C/N ratio compared with the other composts. The study demonstrated that the spinach yield...

To investigate whether the fertilizers N, P or K individually affect plant growth, oil content and the gender of sweet gale, two trials, pot and field trials, were carried out at Orkney College UHI in Scotland. A pot trial was established with eight soils which were collected from different sweet gale trial sites in the north of Scotland. Although neither shoot yield nor oil concentration in sh...

wheat (triticum aestivum l.) was grown in earthen pots containing soil of balkasar soil series (sandy loam) in green house at the department of soil science and swc, pir mehr ali shah arid agriculture university, rawalpindi during rabi season, 2007. the crop was treated with two levels of phosphorus (40 and 80 kg p ha-1 ) in the form of ssp, tsp, np and dap. a basal doze of 100 kg n and 60 kg k...

Algal blooms have been a major problem in water systems due to the nuisance, toxicity and water quality deterioration. Cyanobacteria, also known as blue-green algae, are present in pond mostly during the summer period. These organisms may impair the environment in various ways such as deoxygenation by decomposing in the water becoming potentially toxic to fish. Fertilizers are added to fish pon...

Phosphate concentrations in municipal and agricultural wastewaters continuously increase because of the growing use of detergents and fertilizers. Thus, it seems that phosphate recovery from wastewater as calcium phosphate would be attractive due to the vast applications of calcium phosphate in industry. In the current experimental study, the phosphate recovery by addition of calcium chloride t...

walnut tree is grown for multiple purposes. indeed, it is economically important and increasing its yield and improving its quality in order to compete in the international markets is one of great importance. to this end, one significant management practice is proper use of suitable fertilizers. zinc and phosphorus are two important elements in the nutrition of walnut. in this study, experiment...

Plants and microbes interact in various relationships which have both adverse and beneficial effects on plant growth and microbial communities. Many processes of these interactions occur at or near the root–soil interface, which is known as the rhizosphere. The rhizosphere is defined as the soil region under the immediate influence of plant roots. Many studies suggest that the microbial communi...

in order to investigation the effects of different combination and amount of chemical, biological and organic manure in present of water absorbent materials on some phenological, morphological and yield of soybean, a field study was carried out gorgan region climate conditions in a factorial experiment based on randomized complete block design with three replications. in this experiment two lev...

carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), calcium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn). These 17 essential elements, also called nutrients, are often split into three groups (fig. 1). The first group is the three macronutrients that plants can obtai...