Abstract The improvement of water quality through aquatic plants’ nutrient uptake is one the crucial elements in achieving a sustainable ecosystem. Water affected by variety variables, including dissolved oxygen concentrations, overabundance, bacterial populations, salt content, and number suspended particles water. This experiment was performed to evaluate biological biochemical characteristic...

The study deals with organic, mineral and organo-mineral systems of winter wheat fertilization in the conditions Volga forest-steppe. According to organic system, straw predecessor, green manure Biocomposite-correct were introduced into soil (typical medium-thick medium loamy chernozem) for mass (vetch-oat mixture). system included two options: applied together nitrogen a dose 10 kg per 1 ton z...

With the huge explored reserves of potash salts in Kazakhstan, there is still no production fertilizers, demand for which constantly growing. In this regard, research processing largest Chelkar deposit ore into fertilizers and an urgent problem. The article presents results washed decomposition with nitric acid suspension filtration. filtering properties granulometric composition insoluble resi...

In order to study the effects of nitrogen (N), phosphorus (P) and potassium (K) on the yield, the appearance eligibility ratio and the contents of total glucosinolates and glucoraphanin of cauliflower, the 311-A optimization regression design was used to conduct field experiments of N, P, K fertilizer treatments using winter cauliflower variety ‘‘HB16’’. The models of the balanced application f...

a randomized complete block design with three replications was performed in rice research institute of iran, rasht in 2008, to find the effect of supplement foliar application of nitrogen and potassium on ’daylam‘ hybrid rice grain yield, its components and grain protein percentage. foliar application of 20 kg nitrogen (5 percent n) and 15 kg potassium (3 percent k2o) in different pre-anthesis ...

There have been several recent developments in slow-release fertilizers. These materials supply nutrients continuously over an extended period in contrast to water soluble fertilizers which are immediately available after incorporation in moist soil. Slow-release fertilizers are not subject to rapid leaching loss and do not easily burn plants from over-application. The major need for slow relea...