Resistance of Brown Plant Hopper (BPH) Nilaparvata lugens to Carbofuran was studied in the laboratory by comparing LC50 values observed for B.P.H . from five rice growing districts o f Sri Lanka. Highest LCs0 value (0.000666 ...

It is shown that symmetric rate equations describing the interactions between similar species have interesting mathematical properties. The biological implications of their solutions are discussed.

Atkanda Vihara is the modern name of the site of an ancient Buddhist monastery, situated in the village of Kotakanda, Allepotana in the A. G.A.’s division of Kahatagasdigiliya in the Kanadara Korale, Nuvaragam Palata East ...

The introduction of the Universal Suffrage and the Executive Committee system and the abolition of communal representations on the recommendations of the Donoughmore Commission was considered a distinct advance on the ...