Effect of growth substances on rooting of planting materials in black pepper (Piper nigrum L.)

Abstract

The study revealed lhat all types of planting materials treated with IBA 1000 ppm were superior wilh regard to rooting percentage and other root growth parameters such as number, length, fresh weight and dry matter production of roots. Regardless of the growth substance treatments, mist had pronounced influence on root growth in all the planting materials. All types, except laterals, rooted readily during March; but laterals recorded maximum rooting during June, though there was not much difference among the planting materials with regard to their rooting ability, laterals were shy rooters and produced roots only after six weeks of planting while all the other types produced roots readily within three weeks of planting.