Possible Replacement of Wheat Post Herbicides with Soil Herbicide Pendimethalin
Journal
Agriculturae Conspectus Scientificus
Date Issued
2022-01-23
Author(s)
Arben MEHMETI Jeton RAMADANI Zvonko PACANOSKI Rozafa FETAHAJ Elez KRASNIQI
Abstract
The experiment was conducted between 2016-17 to evaluate the efficacy of PRE emergence
and POST herbicides for effective weed control in wheat crops and analyse if pendimethalin
may replace usually spring post-applied herbicides. The applied PRE emergence herbicide
was pendimethalin and POST herbicides were prosulfuron, amidosulfuron + iodosulfuronmethyl-
natrium + mefenpyr-diethyl, pyroxsulam, amidosulfuron + iodosulfuron-methylnatrium
+ mefenpyr-diethyl + fenoxaprop-p-ethyl. The weed population consisted mainly
of annual and some perennial weeds. Weediness comprised 31 plants m-2 in the control
plots and 1.3-9.0 plants m-2 in the plots treated with herbicides. The highest numbers of
individuals were recorded for Persicaria maculosa (8.0 plants m-2), Chenopodium album
(7.3 plants m-2), Apera spica-venti (7.0 plants m-2) and Convolvulus arvensis (3.0 plants m-2).
Most POST herbicides effectively reduced dominant weeds with the highest efficacy in
plots treated with herbicide amidosulfuron + iodosulfuron-metil-natrium + mefenpir-dietil
(95.9%). Furthermore, the efficacy of PRE herbicide pendimethalin with two doses was
lower compared to POST herbicides, besides amidosulfuron + iodosulfuron-metil-natrium +
mefenpir-dietil + fenoxaprop-p-ethyl. The treated plots with herbicides showed a statistically
higher wheat yield compared to control plots. The PRE herbicide pendimethalin may replace
POST herbicides, but this depends strongly on used dosage, climatic conditions and weeds
that germinate in the spring. Wheat yields differed among PRE herbicide pendimethalin
applications and POST herbicide, ranging between 5115 and 7003 kg ha-1.
and POST herbicides for effective weed control in wheat crops and analyse if pendimethalin
may replace usually spring post-applied herbicides. The applied PRE emergence herbicide
was pendimethalin and POST herbicides were prosulfuron, amidosulfuron + iodosulfuronmethyl-
natrium + mefenpyr-diethyl, pyroxsulam, amidosulfuron + iodosulfuron-methylnatrium
+ mefenpyr-diethyl + fenoxaprop-p-ethyl. The weed population consisted mainly
of annual and some perennial weeds. Weediness comprised 31 plants m-2 in the control
plots and 1.3-9.0 plants m-2 in the plots treated with herbicides. The highest numbers of
individuals were recorded for Persicaria maculosa (8.0 plants m-2), Chenopodium album
(7.3 plants m-2), Apera spica-venti (7.0 plants m-2) and Convolvulus arvensis (3.0 plants m-2).
Most POST herbicides effectively reduced dominant weeds with the highest efficacy in
plots treated with herbicide amidosulfuron + iodosulfuron-metil-natrium + mefenpir-dietil
(95.9%). Furthermore, the efficacy of PRE herbicide pendimethalin with two doses was
lower compared to POST herbicides, besides amidosulfuron + iodosulfuron-metil-natrium +
mefenpir-dietil + fenoxaprop-p-ethyl. The treated plots with herbicides showed a statistically
higher wheat yield compared to control plots. The PRE herbicide pendimethalin may replace
POST herbicides, but this depends strongly on used dosage, climatic conditions and weeds
that germinate in the spring. Wheat yields differed among PRE herbicide pendimethalin
applications and POST herbicide, ranging between 5115 and 7003 kg ha-1.
Subjects
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