Effect of Preceding Crops and Nitrogen Rates on Post Harvest Attributes Of Winter Hybrid Maize (Zea Mays L)

Effect of Preceding Crops and Nitrogen Rates on Post Harvest Attributes Of Winter Hybrid Maize (Zea Mays L)



B.P. Yadav, D. N.Yadav, K.B. Koirala, K.R. Pandey , R.B.Thapa



A field experiment was conducted at Agronomy research
farm of IAAS, Rampur, chitwan, Nepal during summer and winter season
2010 and 2011 to study the effect of crop sequence and nitrogen rates on
hybrid maize. There were thirty treatment combination consisting of
six crop sequences, maize-maize, fallow-maize, greengram-maize,
cowpea-maize, blackgram-maize, clusterbean-maize in main plots and five
nitrogen rates 0, 50, 100, 150, 200 kg/ha in subplots with three
replication.The research finding revealed that grain yield of maize was
higher after summer legumes than after maize, fallow and clusterbean.
Maximum grain yield of maize (4840 kg/ha in 2010 and 5230 kg/ha in 2011)
was recorded under greengram-maize sequence followed by cowpea-maize,
whereas the lowest grain yield was noted under maize-maize during both
the years. Grain yield recorded with 200kg N/ha was maximum (6250 kg/ha
in 2010 and 6548 kg/ha in 2011) while lowest yield (2296 kg/ha in 2010
and 2570 kg/ha in 2011) was under no nitrogen application. Maximum cob
diameter (3.72 cm in 2010 and 3.85 cm in 2011) was recorded under
greengram-maize sequence and it was minimum under maize-maize sequence.
Cob diameter was maximum (3.78 cm in 2010 and 3.99 cm in 2011) with 200
kg N/ha while it was minimum at no nitrogen application. Cob length
noted under cowpea-maize sequence was maximum (12.2 cm in 2010 and 12.8
cm in 2011) which was comparable to greengram – maize. While cob length
was minimum under maize-maize sequences. Maximum cob length (12.5 cm in
2010 and 13.3 in 2011) was recorded with 200 kg N/ha and it was minimum
under control. Maximum grain number per cob (334.6 in 2010 and 338.5 in
2011) was noted under greengram– maize sequences and minimum under
fallow – maize in 2010 and under maize – maize in 2011. Grain number per
cob was maximum 359.0 in 2010 and 364.0 in 2011 ) noted with 200 kg
N/ha while it was minimum with no nitrogen during both the years .
Maximum grain weight per cob (64. 5 g in 2010 and 65 .9 g in 2011) was
recorded under cowpea– maize sequences which was comparable to
greengram– maize sequences, while it was minimum under maize– maize.
Grain weight per cob was maximum (80.0 g in 2010 and 82.0 g in 2011)
recorded with 200 kg N/ha and it was minimum under no nitrogen
application.Maximum 1000 grain weight (191.5 g in 2010 and 193.0 g in
2011) was recorded under greengram– maize sequence. While it was minimum
under maize-maize sequence. 1000 grain weight was maximum (206.5 g in
2010 and 208 .0 g in 2011) with 200 kg N/ha and it was minimum with no
nitrogen application. Stover yield was maximum (10504 kg/ha in 2010 and
11050 kg /ha in 2011) under greengram – maize sequences while it was
minimum under maize– maize sequences. Maximum Stover yield (11922 kg /ha
in 2010 and 12700 kg /ha in 2011) was recorded with 200 kg N/ha while
it was minimum with no nitrogen application. 



http://ijeab.com/upload_document/issue_files/1467813955-6%20IJEAB-MAY-2016-13-Effect%20of%20Preceding%20Crops%20and%20Nitrogen%20Rates%20on%20Post%20Harvest%20Attributes%20Of%20Winter%20Hybrid%20Maize%20(Zea%20Mays%20L).pdf



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