Effects of arbuscular mycorrhiza and composted market waste on the performance of Tiannug 1 variety of kenaf (<i>Hibiscus cannabinus</i> Linn.)

Abstract

This study determined effects of composted market waste and Arbuscular Mycorrhiza (AM) on Root Colonization (RC) and fibre yield of kenaf. The experimental design was 2 x 12 factorial in a Completely Randomized Design replicated three times. The treatments were with AM (AM+) and without (AM-) and twelve levels of soil amendment: 0, NPK 20:10:10 (60 kg N ha^-1), purely composted market waste (20, 40, 60, 80 and 100 kg N ha^-1), and composted market waste fortified with superphosphate and  urea (20, 40, 60, 80 and 100 kg N ha^-1). Residual effect of the treatments was also determined. Data on RC and yield were collected and analyzed using descriptive statistics and ANOVA. RC ranged from 14.4 to 78.1%. Inoculated Tiannug 1 at 40 kg N ha^-1 composted market waste fortified with superphosphate and urea had significantly (p < 0.05) higher RC (79.8%), bast (9.6 g pot^-1) and core (19.9 g pot^-1) yields. For the residual effect, inoculated Tiannug 1 at 100 kg N ha^-1 purely composted market waste had significantly (p < 0.05) higher RC (69.0%), bast (2.7 t ha^-1) and core (5.8 t ha^-1) yields. Tiannug 1 was highly colonized by AM and the optimum yields observed at 40 kg N ha^-1 composted market waste fortified with superphosphate and urea.

Keywords: Arbuscular mycorrhiza, composted market waste, kenaf, performance.