تأثير الكبريت و عدد مرات الحش في حاصل البذور و مكوناته للبرسيم

الملخص EN

A study was conducted at the field crops Experiment Station of the College of Agriculture, University of Baghdad for two seasons (1999-2000 and 2001-2002) to in vestigate the effect of different levels of sulfur and number of cuttings on seed yield and its components in Miskawi cultivar of Berseem (Trifolium alexandrium L.).

Suifur levels (0, 200, 400, 600 and 800 kg/ha) with four cutting treatments (once, twice, three and four times) were applied in a split plot arrangement in which sulfur levels were the main plots and cutting treatments were sub-plots.

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The results showed that in the first and second season, application of sulfur had a significant effect on seed yield, number of stem/plant, inflorescence/stem, seeds/inflorescence.

However, no significant effect was noticed on seed weight.

In both seasons, added sulfur at: level of 600 or 800 kg/ha^produced significantly higher means for all components except seed weight.

In first season, higher seed yield (897.6 kg/ha) was obtained from treatments received 600 kg/ha of sulfur, while high seed yield (995.6 kg/ha‘)‘was obtained from treatments received 800 kg/ha of sulfur.

Number of cuttings had significant effect on seed yield and all components except seed weight.

In l- and 2nd season, plants cut twice gave higher seed yield (851.9, 979.2 kg/ha), respectively.

It was concluded that addition of sulfur at a rate of 600 or 800 kg/ha and cut the crop twice, when the 2ndcut should be done in I- week of April gave higher seed yield of Berseem.