SciELO - Scientific Electronic Library Online

 
vol.71 número2Comparación de Métodos Convencionales y Orgánicos de Fertilización y Control de Malezas en una Rotación de Larga Duración de Cereales en Secano, EspañaAlternativas de manejo de una maleza problemática de trigo Avena fatua L. por metabolitos de Trichoderma índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Chilean journal of agricultural research

versión On-line ISSN 0718-5839

Resumen

EHSAN SAFDAR, Muhammad et al. Comparative Efficacy of Different Weed Management Strategies in Wheat. Chilean J. Agric. Res. [online]. 2011, vol.71, n.2, pp. 195-204. ISSN 0718-5839.  http://dx.doi.org/10.4067/S0718-58392011000200003.

Weed management programs should focus on environmental safety along with benefits to the farmer. We evaluated the effects of various weed control methods: ‘daab’ practice (stale seed bed technique), manual hoeing, and the chemical method (mixture of Buctril Super 60EC [bromoxynil + MCPA]0.45 kg ai ha-1 and Puma Super 75EW [fenoxaprop-P-ethyl] 0.75 kg ai ha-1) in combination with different planting geometries: 22.5 cm apart single row, 22.5 cm apart crisscross double row, 30 cm apart single row and broadcast sowings on weed control and grain yield of spring wheat (Triticum aestivum L.) var. Sehar 2006 at the University College of Agriculture, University of Sargodha, Pakistan, during the winters of 2009 and 2010. The chemical method, manual hoeing and ‘daab’ practice gave 71.44%, 30.69% and 28.60% weed controls resulting in 11.79%, 11.09% and 4.95% increases in grain yield above that of the weedy control, respectively. The 22.5 cm apart single row sowing in combination with chemical weed control proved to be the best regarding weed control (87.23%), grain yield ( ha-1) and number of fertile tillers m-2 (509.5), whereas wheat plant height (108.2 cm), number of grains spike-1 (45.90) and 1000 grain weight (45.23 g) were higher in 30 cm apart single row sowing in interaction with manual hoeing. Grain yield showed a significant negative (b = -152.8) and positive (b = 3.21) correlation with weed biomass and fertile tillers m-2, respectively. Chemical weed control, ‘daab’ practice and manual hoeing gave cost:benefit ratios of 2.50, 1.95 and 1.14, respectively. Although the chemical method seems the most profitable, the ‘daab’ practice was found to be the most advantageous if environmental concerns were taken into consideration.

Palabras llave : Weed control; sowing pattern; ‘daab’ practice; crisscross sowing; yield components.

        · resumen en Español     · texto en Inglés     · pdf en Inglés