Response Of Triticum Aestivum L. To Spraying With Sorghum Extract At Different Spray Times And Its Relationship To Growth, Yield And Weeds Growth

Abstract

Field experiment wene condueted at pruviane of basra to study the effect of sorghum extract with the herbicide ( Atlantis) in controll wheat weeds and the effect of the spraying period of these extracts on weeds growth yied of wheat. The experiment was carried out according to a split plot within a randomized complete block design (RCBD) with three replications. The main plots included three spraying periods, which are (T1 before Tillering, T2 when Tillering, and T3 when elongating) and the secondary plots included five control treatments (C1 Atlantis herbicide, C2 check, C3 sorghum extract + half the recommended amount, C4 sorghum extract, C5 sorghum extract + full concentration of the pesticide) and the following characteristics were studied: Dry weight of broad-leaved weeds , plant height, spike length, grain yield and bio yield. The use of sorghum extract + full concentration of the herbicide led to significant increases in most of the studied traits, and this treatment did not differ significantly from the treatment of sorghum extract + half the amount of herbicide, where it outperformed. As decreasing the dry weight of broad-leaved weeds , it gave the lowest dry weight and the highest average in plant height, spike length, grain yield and biological yield. The results showed that the second spraying period was significantly superior in all studied traits. The interaction between the two factors of the study (C5×T2) sorghum extract + full concentration of the pesticide with the second spraying period, which did not differ significantly from the treatment of sorghum extract + half the concentration of the pesticide with the second spraying period, was superior in most of the studied traits, as it gave the lowest average for the weeds Broad-leaved (3.97) g m2 and the highest average in plant height (93.52) cm, grain yield (6.257) and vital yield (16.940).