تأثير مواعيد الزراعة و التراكيز المنخفضة لمبيدات الأدغال على نمو و حاصل الحنطة Triticum Aestivum L.

الملخص EN

A field experiment was conducted at field in Fudaliyah city, during 2017-2018 seasons.

To study the effect of sowing dates and low concentration doses of herbicides on the growth and yield components triticum aestivum L (Boraa, Italian).

Sowing dates were (1 11, 15 11, 1 12, 15 12), and the low herbicides doses were (full doses (Granstar 20g/ha +Everst 70 ml/ha+ Cronus 80g/ha), 75% doses, 50% doses without doses).

The first sowing date substantially increased plant height, tillers, number of spikes, number of grain, grain weight and yield (90.25 cm, 381.33 tiller.

m-2, 324.1 spike.

m-2, 40.244 g, 6.231 t.

ha-1, sequentially.

1/12 sowing date gave the bet number grain, it gave 75.75 grain.

spike-1.

The first concentration excelled in all characteristics, and which no significant with second concentration for number of grain (90.08 cm, 347.75 tiller.

m-2, 302.3 spike.

m-2, 79.08 grain.

spike-1, 37.923 g, 6.478 t.

ha-1).

There was a significant interaction between the first sowing date and the first concentration in all characteristics excluding number of grain.

Can be conclude that the first sowing date within the first concentration are given higher yield, but it can be used 75% doses especially it is not significant for some characteristics.