WEED INFESTATIONS IN BORO RICE IN THE HAOR AGRO-ECOSYSTEM AS AFFECTED BY WEEDING REGIME AND UREA Top DRESSING

Authors

  • S M S Anwar BSFlC, Dhaka, Bangladesh
  • A A Mamun Department of Agronomy, Bangladesh Agricultural University, Mymensing, Bangladesh "
  • M Nasim Rice Farming Systems Rice Research Institute, Gazipur 1701, Bangladesh
  • M N Bari Depurtment of Agronomy, Institute of Postgraduate Studies in Agriculture, Gazipure 1703, Bangladesh

Keywords:

Weed survey, Boro rice, Relative abundance, Hoar area.

Abstract

Phytosociology of weedswasstudiedinboro (winter)riceinhaorareainrelationtoweedingregimeandureatopdressing
throughaweedsurvey. 16,18and 13weedspecieswererecordedinthefieldsreceivingthreedifferentregimesofweeding.,
Scirpus junco ides wasthemostdominantspecies. Awiderangeofdissimilarityinweedinfestationwasobserved inthose
fields. The fields receiving 15-20, 8-14 and 0-7 kg ha' of urea as top dressing recorded 14, 21 and 17 weed species
respectively. Scirpus juncoides was alsothemostdominantweedspecies. Awiderangeofdissimilarity andsevere weed
infestation was observed in thefields receivingurea as topdress.

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Published

1999-12-20

Issue

Vol. 42 No. 6 (1999): Pakistan Journal of Scientific and Industrial Research

Section

Articles

How to Cite

WEED INFESTATIONS IN BORO RICE IN THE HAOR AGRO-ECOSYSTEM AS AFFECTED BY WEEDING REGIME AND UREA Top DRESSING. (1999). Biological Sciences - PJSIR, 42(6), 349-354. https://www.v2.pjsir.org/index.php/biological-sciences/article/view/2201