Agricultural Studies, Vol. 3, Issue 3, Dec  2019, Pages 49-62; DOI: 10.31058/j.as.2019.33002 10.31058/j.as.2019.33002

Yield Performance of Wheat as Influenced by Management Practices under Terminal Heat Stress

, Vol. 3, Issue 3, Dec  2019, Pages 49-62.

DOI: 10.31058/j.as.2019.33002

Mahamuda Akhter Munni 1 , Ahmed Khairul Hasan 1* , Fahmida Akter 1 , A. K. M. Mominul Islam 1

1 Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh

Received: 1 November 2019; Accepted: 30 November 2019; Published: 20 December 2019

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Abstract

High temperature during grain filling stage is one of the main yield limiting factors of wheat in Bangladesh. Certain management practices may help to mitigate this problem. Hence, a field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University to find out the growth and yield performance of wheat as influenced by management practices under terminal heat stress. The experiment comprised three factors viz. variety, date of sowing and management practices. The variety comprised BARI Gom-21 (Shotabdi), BARI Gom-23 (Bijoy) and BARI Gom-26 (Hashi). Date of sowing comprised 19 November and 19 December sowing and management practices comprised four different levels of treatments viz. control, water hyacinth mulch, foliar spray of potassium orthophosphate and foliar spray of salicylic acid. The experiment was arranged in a split plot design with three replications. All the yield components were influenced by varieties date of sowing, management practices and their interactions. Results revealed that yield and yield components of wheat varieties were increased with optimum sowing and water hyacinth mulch, and decreased with late sowing and control (no management). The highest number of total tillers hill-1 (7.20), number of effective tillers hill-1 (5.67), number of spikelets spike-1 (19.53), number of fertile spikelets spike-1 (35.27), 1000-grain weight (39.46 g) and grain yield (4.04 t ha-1) were obtained from BARI Gom-26, sown in 19 November with the application of water hyacinth mulch than any other treatments. The lowest grain yields were obtained from BARI Gom-21 with 19 December sowing and control (no management). In both optimum and late sown condition, BARI Gom-26 gave the highest yield than the other two varieties. Therefore, it may be conclude from the results of the study that in late sown condition, BARI Gom-26 and water hyacinth mulch may mitigate the yield reduction due to the adverse effect of the terminal heat stress.

Keywords

Wheat, Terminal Heat Stress, Mulching, Yield Performance

Copyright

© 2017 by the authors. Licensee International Technology and Science Press Limited. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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