Controlled release fertilizers (CRF) are produced with different rates and durations of nutrient release to cater to different crops with wide ranges of nutrient requirements. A rapid technique is needed to verify the label specifications of nutrient release rate and duration. Polymer-coated urea (PCU) (43% nitrogen [N]) and polymer-coated N, phosphorus (P), potassium (K) (PC_NPK; 14-14-14) fer...

present study determines not only the total amounts of metals (cr, cu and pb) in superficial agricultural soil of sistan area in eastern iran, but also the chemical partitioning of these elements in seven statistically selected cases. the analysis was run for local soil, soil treated by non-contaminated organic, compost and chemical fertilizers as well as soil treated by metal-contaminated fer...

Diamond n-type layers are crucial for the development of a new bipolar diamond-based electronic technology. However, difficulties to incorporate impurity atoms into diamond lattice make its growth stage technological research still in progress. Phosphorus doping has been carried out successfully on (111)-oriented substrates, reaching high concentrations and good reproducibility. Nevertheless, s...

Nitrogen utilization by corn (Zea mays L.) is influenced by the form of inorganic N present in the root zone. A field experiment was conducted on Enon sandy loam (fine, mixed, thermic Ultic Hapludalf) to determine N use efficiency and its partitioning in various plant parts of corn. Ammonium nitrate labeled either as NH4-N or NO3-N and applied at 50, 100, or 200 kg N ha" was evaluated. Microplo...

Balanced and integrated use of organic and inorganic fertilizers may enhance the accumulation of soil organic matter and improves soil physical properties. A field experiment having randomized complete block design with four replications was conducted for 36 years at Punjab Agricultural University (PAU), Ludhiana, India to assess the effects of inorganic fertilizers and farmyard manure (FYM) on...

Soil enzymes play a vital role in nutrient mineralization and their activity is an excellent sensor in predicting the capacity of nutrient supply to plants. Temporal changes in three soil enzymes activity (urease, alkaline phosphatase and dehydrogenase) in rainfed wheat were studies through field experiment conducted at the research farm of Pir Mehr Ali Shah Arid Agriculture University Rawalpin...