تأثير بعض مصادر تقاوي الرز في النقاوة و الإنتاجية

الملخص EN

A field study has been conducted at rice growing farmers who had used different seeds resources from Al-Mishkhab Rice Research Station(AMRRS), Iraqi Seeds Company(ISC), and Farmer's Self Saved Seeds(FSSS) of two rice varieties Anber33 and Jasmine.

The study aims of to knowing the roll of different rice seeds resources on shifting of purity and productivity of five rice growing seasons in Al-Mishkhab district at Najaf Ashraf province during 2010- 2014.

The study includes all rice growing farmers who have used improved seeds from worthy resources or from self-saved seeds.

The results showed that the areas and rice growers of improved seeds are increased annually.

It is found that there is main differentiations in grain purity and productivity from these different resources, show increased in purity and productivity as average from (AMRRS) resource (100%) and (11%) respectively compared with (FSSS) resource.

This result may be attributed to that few of rice growing farmers purchase their seeds from trusted resources, while many others were depend on selected seeds from their own fields(self saved seeds).

The study recommends to improve new varieties at research station, producing good seeds quality, enhancing of seed production system with supporting by the government, implementing of new strategy to encourage and training the rice farmers on using the best scientific ways to seed selection, concentrating on extension of programs on using improved seeds, and innovating of seed production system and its laws.