Abstract:
Breeding in wheat crop for improvement in new varieties having high yield, besides desirable and durable disease resistance is a continuous and long-term process and if it is coupled with better agro economic traits evaluation, there can be a clearer picture about the performance of newly developed cultivar in any crop species. A field study was conducted at the Research Farm Area of National Agricultural Research Centre, Islamabad, in wheat program during 2014-15, under late sown conditions. It was a ‘Randomized Complete Block Desig’n with split plot arrangement, having fertilizer ratios in main plots and seeding densities in subplots. Both fertilizer ratios and seeding densities had four levels. From the analyzed data, it was revealed that under late sown circumstances, different nutrient ratios were statistically different in chlorophyll contents, number of tillers (mG2) and biological yield (kg haG1), whereas, it was at par for plant height, spike length, leaf area and grain yield (kg haG1). It was also revealed that there were 22 and 21% higher tillers mG2 and biological yield (kg haG1), as compared to those conditions when there was no fertilizer application in the soil. In case of various seeding densities, a significant response was found for number of tillers (mG2), biological yield (kg haG1) and grain yield (kg haG1). In case of interaction of nutrient ratios with seeding densities, a significant response was found only in biological yield (kg haG1) at F3 (90:60 N P kg haG1)×SD4 (140 kg haG1). While considering the benefit cost ratio (BCR) for nutrient ratios, it was found maximum at 45:30 level (F2) which was 1:8.45. In case of seeding densities, maximum BCR was observed in 80 kg haG1 (1:17.61).
Page(s):
82-87
DOI:
DOI not available
Published:
Journal: Science, Technology and Development, Volume: 35, Issue: 2, Year: 2016