Weed management practices effects on yield performance of wheat

The selection of appropriate variety and proper weed management remains the most significant agronomic problem associated with wheat production in Bangladesh. We, therefore, conducted the current experiment to study the effect of weed management on the weed density and yield performance of some wheat varieties. The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, from November 2016 to March 2017. The experiment consists of three wheat varieties viz. BARI Gom-25, BARI Gom-26 and BARI Gom-29, and four weed managements viz. no use of herbicides (farmers manual hand weeding), herbicide pendimethalin at the dose of 2.5 L ha-1 (pre-emergence), herbicide 2, 4-D at the dose of 2 L ha-1(post-emergence), and combine herbicide of pendimethalin + 2, 4-D. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Weed parameter and most of the yield contributing characters and yield were significantly influenced by wheat varieties, weed management practices and their interactions. Among the varieties, the highest grain yield (4.59 t ha-1) was recorded in BARI Gom-29, whereas for weed management practices, the highest grain yield (4.76 t ha-1) was obtained in pendimethalin + 2, 4-D treatment. In interactions,BARI Gom-29 with pendimethalin + 2, 4-D treatment produced the highest grain yield (5.10 t ha-1). Therefore, BARI Gom-29 along with combine herbicide of pendimethalin @ 2.5 L ha-1 (pre-emergence) + 2, 4-D @ 2 L ha-1 (post-emergence) might be taken in consideration for obtaining higher yield in wheat.