As the saline-alkali paddy area continues to grow, nutrient (e.g., nitrogen (N) and phosphorus (P)) runoff loss is becoming more serious in world. The N-fertilizer application affects risk paddy. Selecting suitable fertilizer types reduce beneficial agricultural sustainability. However, effects of are not clear. This study measured N P concentration surface water paddy, using various N—fertiliz...

Abstract Nitrogen fertilization has been a critical factor for high crop productivity, where urea is currently the most used N source due to its concentration and affordability. Nevertheless, fast solubilization leads frequent losses lower agronomic efficiency. The modification of structure by condensation with formaldehyde proposed improve nutrient uptake plants reduce environmental losses. He...

In a double-blind cross-over study, the effects of slow release (S-R) terbutaline tablets (b.i.d. 0.25 mg/kg per day) and S-R theophylline (5.31 mg/kg morning and 10.62 mg/kg evening) were compared in eleven patients with nocturnal asthma. On day seven of each treatment period, drug serum concentrations and peak expiratory flow (PEF) were measured every 2h over a 24-h period. During daytime, te...

Slow release of nitrate by charred organic matter used as a soil amendment (i.e. biochar) was recently suggested as potential mechanism of nutrient delivery to plants which may explain some agronomic benefits of biochar. So far, isolated soil-aged and composted biochar particles were shown to release considerable amounts of nitrate only in extended (>1 h) extractions ("slow release"). In this s...

Abstract To improve the phosphorus (P) recovery efficiency from livestock wastewater, a novel MgO doped mildewed corn biochar with thermal pre-puffing treatment (Mg-PBC) and without (Mg-BC) was synthesized tested. The thermal-puffing pretreatment improved effectiveness of metal soaking dispersion. P time Mg-PBC (7 h) significantly shorter than that Mg-BC (12 h). Moreover, showed higher capacity...