1Postgraduate Program, Faculty of Agriculture, Brawijaya University, Malang65145, East Java, Indonesia
2Faculty of Agriculture, University of Jambi, Jambi36122, Indonesia
3Department of Soil Science, Faculty of Agriculture, Brawijaya University, Malang65145, East Java, Indonesia
4International Research Centre for the Management of Degraded and Mining Lands, Brawijaya University, Malang65145, East Java, Indonesia
*Corresponding Author: Yulfita Farni, Postgraduate Program, Faculty of Agriculture, Brawijaya University, Malang65145, East Java, Indonesia, Email: yulfitafarni@unja.ac.id
Online Published on 30 March, 2022.
This study aimed to determine the pattern of N mineralization of tithonia (Tithonia diversifolia) and sugarcane (Saccharum officinarum) leaves and assess the uptake of N nutrients in maize by giving T. diversifolia and S. officinarum leaves with different qualities on sandy loam soil.
The research used a completely randomized design (CRD) with following treatment: T1 (100% T. diversifolia), T2 (100% S. officinarum), T3 (75% T. diversifolia: 25% S. officinarum), T4 (50% S. officinarum: 50% T. diversifolia), T5 (25% T. diversifolia leaves: 75% S. officinarum), T6 (without T. diversifolia and S. officinarum or control).
The results showed that the N mineralization pattern of the organic matter combination was significantly higher than the control for all observations. The amount of N mineral released in each treatment was T1 (54.58–529.7 mg/kg), T2 (41.80–381 mg/kg), T3 (47.69–473.6 mg/kg), T4 (46.70–424.0 mg/kg), T5 (70.69–378.9 mg/kg) and T6 (47.14–303.6 9 mg/kg). The sequence of cumulative N release during 12 weeks of incubation was T1 (529 mg/kg)> T3 (573.6 mg/kg)> T4 (424.0 mg/kg)> T2 (381 mg/kg)> T5 (378.9 mg/kg)> T6 (303.6 mg/kg). These results suggested that T. diversifolia and S. officinarum leaves significantly increased N nutrient uptake in maize by 125% to 144.54%.
Mineralization, Nutrient uptake, Saccharum officinarum, Sandy loam soil, Tithonia diversifolia
