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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(6): 2582-2590
DOI: https://doi.org/10.20546/ijcmas.2018.706.305


Influence of Agroclimatic Indices on Morphological and Growth Attributes of Maize (Zea mays L.)
Swetha Sree*, V. Raja Rajeswari, T. Prathima, P. Latha and P. Sudhakar
Department of Crop Physiology, S.V Agricultural College, Tirupati-517502,Andhra Pradesh, India
*Corresponding author
Abstract:

A field experiment was conducted during kharif season, 2016 at S.V. Agricultural College, Tirupathi to study theInfluence of Agro-climatic indices on morphological and growth attributes of maize (Zea mays L.)’. The experiment was laid out in split plot design with twelve treatments. Three maize hybrids D.S 900M, Pinnacle and CP818 with four dates of sowing (June II FN, July I FN, July II FN and August I FN). The results indicated that the number of days to attain different phenological growth stages varied. The morphological attributes and growth attributes like plant height, Leaf area, LAI were highest for Pinnacle and June I sowing (D1). Among the hybrids higher leaf (15.6 g plant-1), stem (78.9 g plant-1), tassel (2.6 g plant-1) and cob weight (177 g plant-1) was observed in D.S 900M on par with Pinnacle and CP818. Among the dates of sowing significantly higher leaf (21.6 g plant-1), stem (95.9 g plant-1), tassel (3.2 g plant-1) and cob weight (192 g plant-1) was observed in D1 (June II FN). Variabilty in morphological and growth attributes tested maize hybrids at different dates of sowing is attributed to variability in crop requirement of temperature and photoperiod viz., Growing degree days (GDD), Photothermal Units (PTU) and Heliothermal units (HTU) especially at grand growth phase stage of maize.


Keywords: Morphology, Growth, GDD, HTU, PTU and HUE
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How to cite this article:

Swetha Sree M., V. Raja Rajeswari, T. Prathima, P. Latha and Sudhakar P. 2018. Influence of Agroclimatic Indices on Morphological and Growth Attributes of Maize (Zea mays L.).Int.J.Curr.Microbiol.App.Sci. 7(6): 2582-2590. doi: https://doi.org/10.20546/ijcmas.2018.706.305