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WEED COMMUNITIES OF WHEAT CROP UNDER DIVERSE EDAPHOGROPGHY OF DISTRICT KHAIRPUR, PAKISTAN

GHULAM SARWER JAKHAR, SAEED AKHTER ABRO, A.Q MAHER AND RAHMATULLAH QURESHI*

Abstract: The wheat crop of Pakka, Kacha and Saline soils were surveyed during 1999-2000 for weed analysis. The soils of these three groups were mean of pH 7.2, EC 1.7 dS/m^-1 with clay loam texture at Pakka (Camborthids) soil; pH 7.20, EC 1.63 dS/m^-1 with silt loam texture under Torrifluvents (Kacha) soils; while pH 10.6, EC 6.17 dS/m-1 with clay loam texture was under Solarthids (Saline) soil. A total of 35 weed species belonging to 30 genera and 15 angiospermic families were recorded during 1999-2000. There were 25 weed species under Camborthids followed by 23 species under Torrifluvents and 16 species under Solarthids soils. Three weed communities viz. 1) Melilotus-Lathyrus-Polypogon in Pakka soil series, 2) Medicago-Chenopodium-Phalaris in Kacha soil series and 3) Spergula-Spinacia-Frankenia in Saline soil series were recognized during the period. Moreover Chenopodium-Phalaris-Avena in Pakka series; Polypogon-Chenopodium-Melilotus in Kacha series; and Rumex-Phalaris-Cressa in Saline series were established as second communities in these areas.
 

Department of Botany, Shah Abdul Latif University Khairpur, Sindh, Pakistan.
Federal Seed Certification & Registration Department, P.O. Box 101, Govt. of Pakistan, Rahim Yar Khan, Punjab.

Corresponding Author: ethnotaxonomist@yahoo.co.in