Effects of arbuscular mycorrhiza and composted market waste on the performance of Tiannug 1 variety of kenaf (Hibiscus cannabinus 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.