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Optimum planting methods better ensure water and nutrient supplythrough improved root development resulting in better crop growth andproductivity. This study was conducted to evaluate the effects ofplanting methods on root development, crop allometry, water useefficiency (WUE), productivity and economic returns of different maize( Zea mays L.) hybrids. Maize hybrids NK-6621, Pioneer-30Y87, andPioneer-30Y58 were sown on beds, ridges, and flat surface. Ridge sowingwas better followed by bed sowing; while amongst the hybrids,'Pioneer-30Y87' performed the best. Well-developed root system, withlonger primary root, more number of lateral roots and higher rootgrowth rate, was observed in 'Pioneer- 30Y87' planted on ridges, whichled to higher WUE, grain yield and its related traits. The same hybridexhibited higher leaf area index and crop growth rate, and maximum netreturn and benefit:cost ratio sowed on ridges. Overall, the ridgesowing improved root development resulting in better allometry,productivity (5.45 t ha-1), and WUE (1.345 kg m-3), in all the maizehybrids. Although maize hybrids exhibited different response todifferent planting methods; maximum grain yield (5.63 t ha-1), WUE(1.41 kg m-3), and net economic returns were observed from hybridPioneer-30Y87.

Influence of planting methods on root development, crop productivity and water use efficiency in maize hybrids