Department of Botany, University of Kashmir, Srinagar - 190006, J&K, India.
The paper discusses the influence of increased fertilization on weed spectrum, dry matter accumulation and nutrient depletion by the associated weeds, besides grain yield of the crop. Studied indicate that increase in the nitrogen, phosphorus and potassium fertilizer dose resulted in dominance of Lemna gibba, masking the predominance of weedslike Echinochloa crusgalli, Marsilea quadrifoliata and Potamogeton nodosus which are otherwise dominant weeds associated with the paddy crop. Though increased fertilization of the crop resulted in decreased uptake of all investigated macro- and micronutrients but crop yield also showed a significant decline hence warranting adoption of a rational programme of fertilizer application.
