PJB-2011-379
FLORISTIC COMPOSITION, COMMUNITIES AND ECOLOGICAL CHARACTERISTICS OF WEEDS OF WHEAT FIELDS OF LAHOR, DISTRICT SWABI, PAKISTAN
ZAMAN SHER*1, FARRUKH HUSSAIN2, LAL BADSHAH3 AND MUHAMMAD WAHAB4
Abstract
Forty species related to 21 families were identified as the weeds of wheat from village Lahor, District Swabi during April 2005. Poaceae (7 spp), followed by Brassicaceae (5 spp), Caryophyllaceae, Asteraceae and Fabaceae (each with 4 spp) were the important families. The remaining families had single species. The most frequent species with more than 45% average frequency were Anagallis arvensis L., Arenaria serphyllifolia L., Chenpodium album L., Fumaria indica (Hausskn) H. N. Pugsley., Melilotus indica (L.) All., Rumex dentatus (Meissn) Rich., and Veronica biloba Linn. Based on importance value four communities viz., Arenaria -Anagallis-Chenopodium, Fumaria-Rumex-Chenopodium, Fumaria-Chenopodium-Anagallis, Arenaria-Fumaria-Chenopodium were deciphered. Caryophyllaceae, Fumariaceae, Chenopodiaceae, Fabaceae, Poaceae and Primulaceae were the dominant families on the basis of family importance values. The biological spectrum showed that there were 82.5% therophytes and 12.5% hemicryptophytes. Geophytes and chamaephytes were represented by one species each. Leaf spectra consisted of 42.5% microphylls, 35% nanophylls and 22.5% leptophylls. Biomass of the forbs was higher than the grasses. Species diversity was higher in Koz Mulk and Pani owing to crop rotation.
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