نتایج جستجو برای: weed infestation
تعداد نتایج: 20719 فیلتر نتایج به سال:
Weed infestation has been known to cause considerable reductions in crop yields, thereby hindering sustainable agriculture. Many plants in genus Euphorbia affect neighboring plants and other organisms by releasing chemicals into the environment. In view of the serious threat of weeds to agriculture, the allelochemicals of Euphorbia himalayensis and their allelopathic effects were investigated. ...
INTRODUCTION: Hydrilla verticillata (L.f.) Royle, a member of the Hydrocharitaceae, was introduced into Florida in the 1950’s (Schmitz et al. 1991). The introduction was the dioecious biotype with only gynoecious plants making up the original infestation. Today hydrilla has invaded at least 21 states either as dioecious or monoecious biotypes or both (Richardson 2008). Called “the perfect aquat...
This study, conducted in Nyanza Gulf of Lake Victoria, assessed ecological succession and dynamic status of water hyacinth. Results show that water hyacinth is the genesis of macrophyte succession. On establishment, water hyacinth mats are first invaded by native emergent macrophytes, Ipomoea aquatica Forsk., and Enydra fluctuans Lour., during early stages of succession. This is followed by hip...
In direct seeded rice, weeds are the major problems limiting crop productivity. Sesbania with rice (DSR) as well seeding rates of affects weed density by smothering effect and therefore, it can be a better management practice. Two year on farm trials were conducted at Kusma, Boarijore Block Bhaluka, Sundarpahadi block Godda from 2020 2021 to assess yields economics in DSR. The results revealed ...
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