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Vol. 2 No. 2 (2018): International Journal of Applied Biology

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Submitted
Jul 19, 2018
Published
Dec 25, 2018

Productivity of maize (Zea mays L.) as affected by varieties and sowing dates

https://doi.org/10.20956/ijab.v2i2.4673
Dil Bahadur Gurung
Nepal Agricultural Research Council, Singh Darbar Plaza, Kathmandu
Balram Bhandari
Nepal Agricultural Research Council, National Maize Research Program, Rampur, Chitwan, Nepal
Jiban Shrestha
Nepal Agricultural Research Council National Maize Research Program, Rampur, Chitwan, Nepal
Mahendra Prasad Tripathi
Nepal Agricultural Research Council, National Maize Research Program, Rampur, Chitwan, Nepal

Corresponding Author(s) : Jiban Shrestha

jibshrestha@gmail.com

International Journal of Applied Biology, Vol. 2 No. 2 (2018): International Journal of Applied Biology

Abstract

Genotypic yield potential of maize varieties is greatly affected by sowing dates. In order to investigate the effects of sowing dates and varieties on the grain yield of maize, the field experiment was carried out at research field of National Maize Research Program (NMRP), Rampur, Chitwan, Nepal from April 2009 to March 2010.  Three varieties namely Rampur Composite, Arun-2 and Gaurav were sown at every week. The results of experiment showed that interaction effect of variety and sowing date on grain yield of maize was significant. Rampur Composite produced highest grain yield (6.1 t/ha) in August and lowest yield (2.6 t/ha) in May. Similarly Arun-2 produced highest yield (4.6 t/ha) in August and lowest yield (2.1 t/ha) in May. Gaurav produced highest grain yield (5.1 t/ha) in September followed by 4.9, 4.8 and 4.6 t/ha in February, July and August respectively and lowest yield (1.5 t/ha) in November. The sowing date was highly significant on grain production. The highest grain production was 5.1 t/ha in August followed by in February (4.9 t/ha), September (4.6 t/ha) and March (4.4 t/ha) respectively. The lowest grain yield was produced in May (2.4 t/ha). Therefore it was concluded that August planting was best for higher grain production of maize varieties (Rampur Composite, Arun-2 and Gaurav) in terai region of Nepal.
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