Indian Journal of Science and Technology

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


This experiment was conducted in 2007 at the Agriculture Research Center, Shahrud, Iran, to evaluate the effect of urea and manure on spinach yield, nutrient uptake and nitrate accumulation. The experiment was conducted in split plot in the form of a randomized complete block design with three replications. Treatments of the experiment were manure (0, M0; 25, M1; 45, M2; ton/ha) and urea (0, U0; 100, U1; 200, U2; 300, U3; kg/ha). At the harvest time two samples were taken from each treatment: one in the morning (7-8 am) and another in the evening (6-7 pm). Results indicated that higher urea and manure application rates increased yield; the interaction of 300 kg urea/ha × 45 ton manure/ha increased yield by about 54% compared with the control. Moreover, nitrate accumulation was higher in samples taken in the morning compared with those taken in the evening.

Keywords

Iron, Manganese, Nitrate Accumulation, Phosphorus, Potassium, Zinc
User