UJI EFEKTIVITAS MIMBA (Azadirachta indica A. Juss) DAN PEMBERIAN NITROGEN TERHADAP PELINDIAN NITROGEN DAN PERTUMBUHAN TANAMAN JAGUNG MANIS (Zea mays saccharata Sturt) PADA TANAH GAMBUT
Abstract: This research aims
to find out the effectiveness of Neem and the application of Nitrogen to
nitrogen leaching and sweet corn growth on peat soil. This research has been
conducted in gauze house of Technical Implementation Unit (TIU) experimental
station and analysis of leachate water has been conducted in Laboratory of Soil
Science, Faculty of Agriculture, University of Riau, Pekanbaru. The research
was held from October 2014 until January 2015. This research is factorial
experiment and prepared in Completely Randomized Design (CRD) that consisted of
2 factors, which are nitrogen (N) application which is without nitrogen and
with nitrogen 3,75g/column, and the second factor is Neem (M), which is without
neem, 0,37g/column, 0,56g/column, 0,75g/column. The data that were obtained
from research results were analyze statistically by analysis of variance
(ANOVA). The result of ANOVA further were tested using Duncan’s multiple range
test 5% significant level. The results of this research show that the
application of neem until 0,75g/column dosage is not effective in decreasing
nitrogen leaching on peat soil. The application of nitrogen on peat soil increases
ammonium on leachate water on fourth week, but not on second and sixth week,
while, on nitrat of leachate is significantly different compare to without
application of nitrogen. The application of neem until 0,75g/column dosage and
nitrogen 3,75g/column does not increase the growth of plant.
Penulis: Sandra Maynita, Wawan,
Al Ichsan Amri
Kode Jurnal: jppertaniandd150440