Production potential of three maize hybrids as influenced by varying plant density
2008
Bukhsh, M.A.A.H.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Ahmad, R. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Cheema, Z.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Ghafoor, A. (University of Agriculture, Faisalabad (Pakistan). Inst. of Soil and Environmental Sciences)
A field experiment to evaluate the production potential of three maize hybrids namely Pioneer-3055, Pioneer-3062, and Pioneer-3012 to varying plant density of P1 (15 cm x 70 cm or 95238 plants m-2), P2 (25 cm x 70 cm or 57142 plants m-2), and P3 (35cm x 70 cm or 40816 plants m-2) was conducted at Govt. Agricultural Extension Farm, Bahawalpur, Pakistan, during 2005 and 2006. Experiment was laid out in randomized complete block design with split plot arrangement, including maize hybrids in main plot and plant density levels in sub plots with four replications. Maize hybrids responded differently to plant density due to their different genetic potential. Pioneer-30D55 surpassed other hybrids i.e. Pioneer-3062 and Pioneer-3012 in crop growth rate (22.28 g m-2 day-1), grain yield (6.16 t per ha), crude protein (7.76 %) contents in grains, where as Pioneer-3012 surpassed other hybrids in crude starch (72.40 %) and oil contents (5.41 %) in grains wit h significant variation between them. Among various plant density levels, crop planted at 95238 plants ha-2 significantly increased crop growth rate (24.93 g m-2 day-1), grain yield (6.37 t per ha), crude starch (71.79 %) and protein content (7.45 %) in grains than rest of the plant density levels i.e. P2 (57142 plants m-2), and P3 (40816 plants m-2). However, crude contents (5.18 %) in grains were significantly decreased in 95238 plant m-2 than rest of the plant density levels. Thus, Pioneer-30D55 at plant density 95238 plants m-2 exhibited the best production potential for growth, grain yield, and crude starch contents in grains.
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