Ecology Journal

Ecology Journal

Ecology Journal

Ecology Journal

PREVALENCE AND ALLELOPATHIC EFFECT OF PARTHENIUM HYSTEROPHORUS ON CROPS IN SOUTHWEST REGIONS OF BANGLADESH



 

ABSTRACT: Periodical weed surveys were conducted during 2020-21in Jashore, Jhenaidah, Chuadanga, Meherpur and Khustia districts of  Bangladesh  to  observethe severity and allelopathic effect of Parthenium hysterophorus on field crops. Parthenium infected the crops differently as observed in rice ( 8.75), maize (11.45%), lentil (12.45%), chickpea (32.40%),  field pea (57.63%), jute (57.63%), cotton (13.45%),  mustard (63.85%), sesame  (17.50%),  groundnut (28.35%), pointed gourd(11.50%), pumpkin (8.45%),onion (30.47%), garlic(26.25%), turmeric (17.50%), potato (38.75%),  banana(24.33%),  sugarcane (60.25%),  napiergrass (55.00%) and marigold (11.25%).Allelopathic effect was  examinedusing  5%  aqueousleaf  extract of P. hysterophorus  ingermination test and results showedcomplete failure of germination in seeds of sesame,  jute, pumpkin, red amaranth, chili, radish  and tomato.  Seeds of other  crops germinated poorly in aqueous solution of parthenium with reduced radicle and plumule growth. Among the different crops, wheat had the  highest reduction in radicle (96%) and plumule (94%) length compared to their control.

 

Keywords: Parthenium, infestation, allelopathy, aqueous extract,germination, seedling growth