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Chaudhary Sarwan Kumar Himachal Pradesh Agriculture University, Palampur

Himachal Pradesh Krishi Vishvavidyalaya (renamed as Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya in June, 2001) was established on 1st November, 1978.The College of Agriculture (established in May, 1966) formed the nucleus of the new farm University. It is ICAR accredited and ISO 9001:2015 certified institution. The Indian Council of Agricultural Research has ranked this University at eleventh place among all farm universities of the country. The University has been given the mandate for making provision for imparting education in agriculture and other allied branches of learning, furthering the advancement of learning and prosecution of research and undertaking extension of such sciences, especially to the rural people of Himachal Pradesh. Over the years, this University has contributed significantly in transforming the farm scenario of Himachal Pradesh. It has developed human resources, varieties and technologies and transferred these to farming community enabling the State to receive the “Krishikarman award” of Govt. of India four times in row for food grain production among small states of the country. Today, the State has earned its name for hill agricultural diversification and the farming community has imposed its faith in the University.

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Subject: Agronomy × Author: Bhalla, Tamanna × End date: 2022 × Start date: 2022 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Ecology and control of Alternanthera philoxeroides (Mart.) Griseb and Synedrella vialis (Less.) A. Gray
    (CSK HPKV, Palampur, 2022-11-26) Bhalla, Tamanna; Kumar, Suresh
    A field experiment was conducted at the Research Farm, Department of Agronomy, CSK HPKV, Palampur during Kharif 2020 and 2021 to study the ecology and control of Alternanthera philoxeroides (Mart.) Griseb and Synedrella vialis (Less.) A. Gray. Eleven weed control treatments viz. glyphosate 1000 g/ha, paraquat 1000 g/ha, 2,4-D Na salt 1250 g/ha, 2,4-D ethyl ester 1000 g/ha, metsulfuron methyl 4 g/ha, carfentrazone 25 g/ha, glufosinate ammonium 500 g/ha, bispyribac Na 20 g/ha, flumioxazin 200 g/ha, diuron 500 g/ha and weedy check (control) were tested in Randomized Block Design with three replications. To study the ecology of both the weeds, experiments were conducted at three locations i.e. Research Farm of Department of Agronomy (Palampur), KVK (Berthin, Bilaspur) and on farmer’s field (Kangra). Alternanthera philoxeroides recorded the highest shoot length (97.25 and 100.75 cm) and number of leaves per shoot (40 and 42) in the month of October and this weed did not flower throughout the duration of study at both the locations i.e. Palampur and Kangra. Whereas, Synedrella vialis exhibited a low growing, mat forming habit with maximum shoot height (13 to 15.50 cm) and number of leaves per shoot (12) in August and September. This weed propagated vegetatively (runner) as well as through seeds since flowering occurred throughout the growth period at all the three locations. Results of the weed control study revealed that the application of glyphosate 1000 g/ha and metsulfuron methyl 4 g/ha behaving statistically alike were significantly effective in reducing the count (No./m2 ) and dry weight (g/m2 ) of Alternanthera philoxeroides and Synedrella vialis during both the years of study. The bioassay study indicated that all the herbicides used for the control of these weeds did not retain any residue in the soil and thus, can be considered safe for use.