SURVEY OF PARASITIC WEEDS (OROBANCHE SPP.) ASSOCIATED WITH BRINJAL (Solanum melongena) IN BANDA DISTRICT OF UTTAR PRADESH INDIA
SURVEY OF PARASITIC WEEDS (OROBANCHE SPP.) ASSOCIATED WITH BRINJAL (Solanum melongena) IN BANDA DISTRICT OF UTTAR PRADESH INDIA
Gulwaiz Akhter1* and Tabreiz Ahmad Khan
ABSTRACT
Three Orobanche spp. viz., O. aegyptiaca, O. cernua and O. ramosa were found to
be associated with brinjal (Solanum melongena) in Banda district, India. However, the
concomitant infestation of O. aegyptiaca with O. cernua and/ or O. ramosa in brinjal crop
was not noticed. Moreover, some of brinjal fields showed the infestation of O. aegyptiaca
with either O. cernua or O. ramosa. The infestation of O. aegyptiaca in brinjal planting was
recorded in all the 20 examined localities. The highest (59.28%) and lowest (14.44%)
weed incidence in brinjal fields was found in Chilla and Gazipur, respectively. The maximum
(78.57 %) and minimum (28.33%) frequency of occurrence of O. aegyptiaca was found in
Kurrahi and Palhari. The infestation of O. cernua in brinjal crop was observed in 14
localities, where the greatest disease incidence and frequency of occurrence of O. cernua
were recorded Jakhni (29.29%) and Gazipur (38.89%). Whereas, the lowest disease
incidence and frequency of occurrence of O. cernua was noticed in Hardauli (7.05 %) and
Jamwara (16.67%), respectively. Moreover, the infestation of O. ramosa in brinjal crop
was found in only nine localities of Banda district. The highest and lowest disease incidence
due to O. ramosa in brinjal was recorded in Gazipur (28.33%) and Lakhanpur (5.29%),
respectively. However, the maximum frequency of occurrence of O. ramosa was found in
Jaspura (35.19%) and the minimum in Mahua (14.81%). In entire Banda district, 68.10%
of the surveyed fields were infested with broomrapes. The highest disease incidence and
frequency of occurrence of O. aegyptiaca were recorded in brinjal followed by O. cernua and
O. ramosa. Thus, it is concluded that the brinjal crop cultivated in Banda district is under
threat to varying degrees by Orobanche spp. infestation and there is great potential for the
parasites to disseminate and infest new cultivated fields in absence of farmers’ knowledge of
problem and lack of effective management programmes.
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March 2020
Vol. 26, Iss. 1
