PJB-2011-1
COMPARATIVE EFFICACY OF A RED ALGA SOLIERIA ROBUSTA, CHEMICAL FERTILIZERS AND PESTICIDES IN MANAGING THE ROOT DISEASES AND GROWTH OF SOYBEAN
VIQAR SULTANA1, GHULAM NABI BALOCH2, AMBREEN1, JEHAN ARA3, M. RAJPUT TARIQ4 AND SYED EHTESHAMUL-HAQUE2
Abstract
Application of seaweed as soil amendment for the control of soilborne plant diseases has increased in recent years due to their environment friendly role. In screen house study, a red seaweed Solieria robusta used as soil amendment showed better suppressive effect on root rotting fungus Fusarium solani than Topsin-M, a fungicide, but was found less effective than Topsin-M against Macrophomina phaseolina and Rhizoctonia solani on soybean. Solieria robusta showed similar suppressive effect on root knot nematode as did carbofuran, a nematicide. Seaweed showed slightly better effect on plant growth than urea or potash by producing taller plants, better root length and number of flowers per plant. However, mixed application of S.robusta and Topsin-M produced greater number of flowers per plant and tallest plants.
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