Impact of changing weather on the crops yield stability in different cropping systems
Laen...
Kuupäev
2023
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Changes in weather conditions make it possible to change the schedule of agricultural
works and introduce new crops and crop rotations in Northern Europe. It is important that the
yield of the crops in the rotation are stable under highly variable weather conditions, which would
ensure a high total yield for the rotation. One of the goals of this long-term field experiment
(2008–2022) was to study the effect of weather conditions on the total yield and stability in the
crop rotation; crops of the given crop rotation were grown in organic and conventional cropping
systems.
Compared to the pre-experimental period 1964‒2007, the annual average air temperature of the
test period 2008‒2022 was higher by 1.1 degrees, whereas the increase in the annual average
temperature was primarily due to the increase in winter and June–July temperatures. In the 3rd
cropping cycle (2018–2022) the total yield of crop rotation as an average of fertilizer variants and
experimental years was 21% and 24% lower than in the 1st (2008–2012) and 2nd (2013–2017)
cropping cycles, respectively, which was mainly caused by the decrease in field pea yield. The
effect of weather on yield stability was greatest for field pea. Fertilization with mineral fertilizers
improved the stability of the total yield in the conventional cropping system. Correlation, factorial
analyses of variance (ANOVA) and two-factor ANOVA were used to test the effect of cropping
systems and climatic conditions on total and average DM yield of crop rotation, also each crop’s
DM yield.
Despite the negative impact of the weather, most of the yield loss can be prevented or the damage
can be eased by careful planning and detailed knowledge about the influence of different weather
factors. Further investigation is required to determine the change in growing season length,
sowing dates and harvesting to provide farmers more detailed tools to predict and plan their
actions.
Kirjeldus
Received: January 31st, 2023 ; Accepted: July 14th, 2023 ; Published: September 1st, 2023 ; Correspondence: maarika.alaru@emu.ee
Märksõnad
cereals, field pea, potatoes, climate change, crop rotation, yield stability, articles