تأثير مستويات من سماد اليوريا و عدد الشتلات في حاصل الرز Oryza sativa L.

الملخص EN

A field experiment was conducted in the Mishkab Rice Research Station Najaf province during the summer a season 2014.

The study aims to determine the effect of nitrogen fertilizer and number of seedling per hill in characteristics of the growth and yield of rice "cultivar Yasemin".

Randomized complete block design (RCBD) in split plot arrangement with three replications, the nitrogen levels (210 , 280 , 350 , 420) kg urea.

ha-1 represented the main plots, while the the number of seedling per hill (1 , 2 , 3 , 4 , 5) seedling.

hill-1 represented the sub plots, and the results of statistical analysis showed that nitrogen level 420 kg urea.

ha-1 gave the highest average values for following characteristics of (grain yield (ton.ha-1), biological yield (ton.ha-1), number of panicles.m-2, number of grains per panicle) reached (6.10 (ton.ha-1), 14.38 (ton.ha-1), 211.01 (panicle.m-2), 127.76 (grain.panicle-1)) respectively, the density 5 seedling.hill-1 superiority by giving the highest average for the values following characteristics of (, grain yield, the biological yield, number of panicles per square meter, number of grains per panicle) and reached (6.08 (ton.ha-1), 14.47 (ton.ha-1), 186.13(panicle.m-2), 117.07 (grain.panicle-1) ), respectively.

This study concluded from that the best nitrogen level is 420 kg urea.

ha-1, and the best density was 5 seedling.hill-1 , because of their superiority in the studied characteristics.*