The influence of cultivar, weather conditions and nitrogen fertilizer on winter wheat grain yield
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Linina, A.
Ruza, A.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Winter wheat
(Triticum aestivum
L.) is one of the most productive and significant
cereal species in Latvia used for food grain production.
The aim of the research was to e
valuate
winter wheat grain yield depending on nitrogen fertilizer rate, crop
-
year (meteorological
conditions) and cultivar and determine the impact and interaction of research factors on grain
yield. Field experiments with winter wheat cultivars ‘Bussard’
and ‘Zentos’ were conducted at
the Latvia University of Agriculture, Study and Research farm Peterlauki during a three year
period (2009/2010, 2010/2011 and 2011/2012). Nitrogen (N) was applied (N60, N90, N120,
N150
kg
ha
-
1
) in spring after resumption of v
egetative growth. Assessment of both winter wheat
cultivars showed that crop
-
year, cultivar, nitrogen fertilizer, crop
-
year × cultivar had a significant
(p
<
0.05) impact on grain yield.
Nitrogen fertilizer did significantly
(p
<
0.05)
affect the
grain
yie
ld of winter wheat,
treatment
with N90 showed of yield increase, compared to N60, while
further use of increasing amounts of N fertilizer did not increase grain yields significantly. Results
suggest, that winter wheat grain yield by 34% depended on cultiva
r, by 33% on crop
-
year
(weather conditions), and by 13% on crop
-
year × cultivar. Influence of the nitrogen fertilizer
effect was small
–
3%. Medium strong positive correlation was found between HTC in the
vegetation period from winter wheat heading to grai
n ripening.
Kirjeldus
Article
Märksõnad
grain yield, nitrogen fertilizer, hydrothermic coefficient, articles