Rana Muhammad Iqbal
Cholistan Institute of Desert Studies, lslamia University, Bahawalpur, Pakistan
Hafiz Qutub Iqbal Chauhan
Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
ABSTRACT
The investigation to see the effect of different phosphorus levels viz., 0, 50, 75, 100 and 125 kg P2O5 ha‾1 with a recommended constant dose of nitrogen @ 150 kg ha‾1 on the leaf growth of two maize varieties was carried out. The experiment was laid out in Randomized Complete Block Design (factorial) with four replications. The maize cultivars included were Composite-17 against a standard variety Akbar. Leaf extension rate (LER) was calculated as the slope of a linear regression fitted to the points along the A-B position of the graph. Final leaf length (FLL) was measured as lamina plus sheath when the individual leaf was fully expanded. Using data for final leaf length and the calculated LER, the duration of leaf extension rate (LED) was calculated. Standard procedures were adopted to record the yield component parameters. The values of linear correlation (r) were worked out to get a relationship between FLL, LER with other growth and yield parameters influencing grain yield in maize. FLL and LER were positively correlated with phosphorus applications. Similarly number of grains per cob, grain weight per cob, 1000-grain weight and grain yield were also significantly correlated with FLL and LER. Therefore, the later two parameters were directly responsible for increasing the various yield components in maize.
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How to cite this article
Rana Muhammad Iqbal and Hafiz Qutub Iqbal Chauhan, 2003. Relationship Between Different Growth and Yield Parameters in Maize under Varying Levels of Phosphorus. Journal of Biological Sciences, 3: 921-925.
DOI: 10.3923/jbs.2003.921.925
URL: https://scialert.net/abstract/?doi=jbs.2003.921.925
DOI: 10.3923/jbs.2003.921.925
URL: https://scialert.net/abstract/?doi=jbs.2003.921.925
REFERENCES
- Maan, A.A.S., D. Wright and M.B. Alcock, 1989. Effect of sowing dates, sowing density and nitrogen supply on leaf extension in spring barley. J. Agric. Sci., 113: 305-315.
Direct Link - Plenets, D., A. Mollier and S.I. Pellerin, 2000. Growth analysis of maize field crops under phosphorus deficiency-II. Radiation use efficiency, biomass accumulation land yield components. Plant Soil, 224: 259-272.
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