Competition effect of Chenopodium album L. for potassium and grain yield in wheat (Triticum aestivum L.)‎

الملخص EN

A field expeciment was conducted to estimate potassium (K) and yield losses by Chenopodium album in wheat under different competition periods.

The $tudy consisted ofzeco competition, competition for 3,4,5,6,7,8 weeks after emergence (WAE), and for الله season.

?o،a$$؛um concentration in c.

album was maximum (4.91%) when it was allowed to compete with wheat for 6 WAE.

Full season competition resulted in a maximum K uptake (8.22 kg ha'‘) by c.

album.

Maximum K concentration (4.39 %) in wheat was recorded in 4 WAE competition period whereas maximum K uptake (98.40 kg ha'1) by wheat was in full season competition period.

There was a linear increase in dry wheat of c.

album with increase in competition period.

Grain yield decreased significantly beyond 3-4 WAE competition periods and maximum decrease (25.59 %) in grain yield was observed in full season competition.