ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

The experiment was conducted at the field of Kerbala during the two seasons of 2001 and 2002, to investigate response cotton variety Lashata to levels of Boron levels (0, 8, 16, and 24 mg.kg-1) and three dates foliar (after thinning , during flowering and after 50% flowering) on growth and qualitative. The experimental design was a randomized complete block design with three replicates.
The results showed that Boron applied at 24 mg.kg-1 increased plant height (156.33 and 158.36 cm), number of sympodia branch per plant (37.44 and 36.00 branches), lint yield (2297.10 and 2212.00 kg/ha) respectively in both season, and reduced height first sympodia branch. In addition, it increased fiber length (21.77 and 24.96%) and fiber strength (24.45 and 23.90%) respectively in both season. The date foliar during flowering of both season increased plant height , height first sympodia branch, number sympodia branch per plant, lint yield (1264.30 and 1326.00 kg/ha) respectively, and fiber strength (5.77 and 4.79%) in both season respectively as compared with foliar boron after thinning. Significant effect of interaction between level 24 mg.kg-1 of boron and date foliar during flowering in all the properties were studied in his research.