Allelopathic sorghum water extract helps to improve yield of sunflower (Helianthus annuus L.). | [Pakistan Journal of Botany • 2016]

Author(s):

1. Sabir Hussain Shah: Department of Agricultural Sciences, Allama Iqbal Open University, Islamabad, Pakistan;Department of Agronomy, Gomal University, Dera Ismail Khan, Pakistan

2. Ejaz Ahmad Khan: Department of Agronomy, Gomal University, Dera Ismail Khan, Pakistan

3. Hussain Shah: Crop Diseases Research Institute (CDRI), Department of Plants and Environmental Protection (DPEP), National Agricultural Research Center (NARC), Islamabad, Pakistan

4. Nadeem Ahmad: PARC Institute of Advanced Studies in Agriculture (PIASA), National Agricultural Research Centre (NARC), Islamabad, Pakistan

5. Jabbar Khan: Department of Biological sciences, Gomal University, Dera Ismail Khan, Pakistan

6. Ghazanfar Ullah Sadozai: Department of Agronomy, Gomal University, Dera Ismail Khan, Pakistan

Abstract:

Allelopathy provides eco-friendly environment in managing weeds by reducing the use of synthetic herbicides that cause environmental pollution and herbicide resistance problems. Therefore, weeds have been controlling by plant derived organic compounds as an alternative of inorganic herbicides since the last two decades. In this study, sorghum aqueous extracts were applied individually as well as accumulatively with reduced levels of Dual Gold® (S-Metolachlor) as foliar sprays in sunflower at 50, 70 and 90 DAS. For comparison, standard level of S-Metolachlor was also applied as foliar sprays along with weedy check. The highest reduction of total weed density (93.7%) was recorded by three sprays of sorghum aqueous extracts at rate of 15 L/ha mixed with 1/3rd S-Metolachlor at 1.6 L/ha as foliar applications. This reduction rate was statistically similar to one that was obtained by standard level of S-Metolachlor (1.6 L/ha). The highest achene yield was achieved by applying three foliar sprays of aqueous sorghum extracts along with reduced doses of S-Metolachlor, which was almost similar to full recommended dose of S-Metolachlor. These findings demonstrate that allelopathy offers environment friendly and economical opportunity for weed control in sunflower reducing the dependence and cost of herbicides.

Page(s): 1197-1202

DOI: DOI not available

Published: Journal: Pakistan Journal of Botany, Volume: 48, Issue: 3, Year: 2016

Keywords:

Keywords are not available for this article.

References:

References are not available for this document.

Citations

Citations are not available for this document.

Citations

Downloads

Views