ALLELOPATHIC IMPACT OF SORGHUM ON W EED MANAGEMENT, YIELD AND QUALITY OF MAIZE UNDER DIFFERENT SEED RATES
ALLELOPATHIC IMPACT OF SORGHUM ON W EED MANAGEMENT, YIELD AND QUALITY OF MAIZE UNDER DIFFERENT SEED RATES
Tariq Ahmed Keerio1*, Muhammad Nawaz Kandhro1, Ahmed Naqi Shah1, Muhammad Ibrahim Keerio2, Ghulam Murtaza Jamro3
ABSTRACT
A field study was c
arried out to estimate the allelopathic potential of sorghum
immature and mature plant extracts under various seed rates on weeds density and yield
of m aize cultivar Dadu Maize I The experiment includes different we ed control practices
i.e., control (No weeding) weeding), various levels of sorghum immature and mature plant extracts
herbicides and hand weeding under various seed rates (20, 25, 30 and 35 kg per ha )).
The results showed that various weed control practices demons trated substantial
decrease in weeds and caused increase in kernel yield over c ontrol The application of
s orghum immature extract @ 15 L per ha in combination with herbicide (Mesotrione
Atrazine @ 1.0 L per ha decreased effectively weed density (m 2 ) and dry biomass (g m
2 and resultantly produced superior growth and yield traits particularly kernel yield (t
per ha ) of maize . Sorghum mature plant extract @ 15 L per ha in integration with
herbicide (Mesotrione Atrazine @ 1.0 L per ha ranked 2 nd in effect iveness of controlling
weeds as well as increasing m aize kernel yield t per ha As the effect of seed rates is
concerned, the le ast weed density m 2 and greatest kernel yield (t per ha ) were noticed
in seed rate 35 kg per ha but optimal kernel yield t per ha ) was record in seed rate 30
kg per ha Hence, the results suggested that combination of plant extracts and herbicide
at reduced doses controlled weeds efficiently and optimum enhancement in kernel yield
of m aize at a seed rate 30 kg per ha
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December 2021
Vol. 27, Iss. 4, Pages 443-576
