in order to evaluate the effect of some qualitative traits of sugar beet (beta vulgaris l.) under irrigation water quality and different types of fertilizers, a field experiment arranged as split plot in rcbd design with three replications at research station of shahrekord university in 2013. the main factor include irrigation with urban wastewater at 2-4 leaf stage, 8-12 leaf stage and irrigat...

this research was conducted under greenhouse conditions to evaluate the optimum combination of irrigation and fertilizer levels to attain the best yield and quality of tomato crop. the experiment was conducted by using a split-plot design with three replicates. irrigation levels were applied to the main plots and fertilizer levels to the sub-plots. for each experimental unit, the irrigation lev...

There is a long history of potassium (K) fertilization research in the North-Central Region. Sustained Iowa field research efforts have focused on developing soil-test K (STK) interpretation and studying the effect of K fertilization strategies on grain yield and STK. Because of changes in the soil-test K method used in Iowa, information published over time should be evaluated separately. Publi...

There has been a tendency of decreasing sugarcane productivity (Saccharum officinarum Linn) in Indonesia due to poor soil available potassium. also evidence that potassium relates directly condition. For this reason, the management engaging Site Specific Nutrient Management (SSNM) must be pursued. The first and most important stage SSNM is assessing variability, which can used recommend particu...

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...

Coincident with the rapid advances being made in soil science, an increasing interest has been shown in the soil mechanisms as they control plant nutrition, growth, and crop production. One of the most influential factors involved is that of the interaction of nutrients. The equilibrium among ions in the soil and the culture solution has lately been designated as "nutrientelement balance. " Emp...

this research set out to evaluate the effect of combined biological and chemical nitrogen fertilizers on some corn hybrids. to this end an experiment was conducted as split plot on the basis of randomized complete block design with four replications. main plots were included: use of chemical and biological fertilizers in four levels: 100% chemical fertilizer, 75% chemical fertilizer + 100% bio-...

This research was conducted to study the impact of potassium and nitrogen fertilizers on trace element content maize (Zea mays L.). Higher doses fertilizer led a linear increase in cadmium, lead, nickel, zinc, manganese content, lower Fe:Zn Fe:Mn ratios. Moreover, cobalt level increased upon decreased higher potassium. The levels other elements (iron chromium) determined by dose and, particular...

Liquid organic fertilizer is a type of that has liquid form with brownish color and commonly used in agriculture as supporting material for the main fertilizer. can be produced through fermentation process matter, such plant residues, animal or human waste, waste so it will not damage environment. The manufacture this study uses cooking oil raw which fermented anaerobically 21 days use EM4 acti...

In order to help farmers to understand soil nutrients, use effectively our soil and protect our environment, at the same time to improve sustainable development of the agricultural system, the topsoil samples were collected form yushu city .The ways of combining Geostatistics with GIS were applied to analyze the spatial variability of soil nutrients, such as Alkaline hydrolysis nitrogen, availa...