Effect of zero tillage and different weeding methods on grain yield of durum wheat in semi-arid regions
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Kuupäev
2021
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Kirjastaja
Abstrakt
The high grain yield of wheat is limited by the dominance of weeds, particularly wild
oat. Therefore, to improve wheat yield under these conditions, a field experiment was carried out
in Maru Agricultural Research Station, Jordan during 2015–2016 and 2016–2017 to investigate
yield response of two wheat varieties (Triticum durum L.) to different tillage and weeding
treatments. The experimental design used was a split-split arrangement in a randomized complete
block design with three replicates. Two-tillage treatments (conventional vs. zero tillage) were
applied to the main plot, two wheat varieties to sub-plot, and five weeding methods (hand
weeding, broadleaf + narrow leaf herbicide, broadleaf herbicide, narrow leaf herbicide, and
controls) as a sub-sub-plot. The variety ‘Umqais’ had higher plant height, biological, grain, and
straw yield than the variety ‘Sham’. Hand weeding slightly increased grain yield compared with
mixed herbicides (the 2,4-D plus Antelope Clodinatop- propagyl). Furthermore, mixed herbicides
presented a higher grain yield than using either single herbicide. The interaction between tillage
systems and weeding methods was significant in both years. The highest (P < 0.05) straw yield
(5,990 kg ha-1
) was obtained by hand weeding under conventional tillage in the first season while
the highest grain yield (2,005 kg ha-1
) was obtained by hand weeding under zero tillage in the
second season. Under all weed control treatments, the variety ‘Umqais’ had higher biological,
grain, and straw yields than the variety ‘Sham’ in the second season indicating that variety
‘Umqais’ performed better under dry conditions. Our results confirmed the superior of zero tillage
for increasing the grain yield of the variety ‘Umqais’, and for increasing the biological and straw
yields of the variety ‘Sham’ under semi-arid rainfed conditions of Jordan.
Kirjeldus
Received: September 28th, 2020 ; Accepted: December 1st, 2020 ; Published: December 10th, 2020 ; Correspondence: abdallah.aldahadha@narc.gov.jo
Märksõnad
biological yield, broadleaf herbicide, conventional tillage, hand weeding, variety x tillage interaction, articles