Tropentag, September 16 - 18, 2026, Göttingen "Towards multi-functional agro-ecosystems promoting climate-resilient futures"

Collaboration intercropping, PGPM fertilisation, and Cascara-compost on optimising productivity of sub-optimal land in the tropics

¹Hasanuddin University, Dept. of Soil Science, Indonesia
²Hasanuddin University, Dept. of Agronomy, Indonesia
³Hasanuddin University, Agriculture Systems Program Study, Indonesia
⁴Motivator Kondoran, Adaptation and Mitigation of Climate Change, Indonesia
⁵Humboldt-Universität zu Berlin, Centre for Rural Development (SLE), Germany

Abstract

Designing model cultivation system for sub-optimal land in the tropics to optimise productivity is a challenge due to limitations in soil physico-biochemical properties. The objective of this research is to obtain cropping system model in the sub-optimal land to optimise productivity through collaboration of intercropping, Plant Growth Promoting Organisms (PGPM) fertilisation, and application of Cascara-compost. The experiment was conducted in the field 2m × 2m plots using split-plot experimental design. The treatment were arranged with PGPM as the main plots and Cascara-compost as sub-plots with three replications, and it applied to the intercropping of sweet corn and peanuts. The treatments PGPM was consisted of 3 levels dosage as p0 = control, p1 = 49 mL/L water/plot, and p2= 67 mL/L water/plot. The Cascara-compost was applied as k0= control, k1=2.4 kg/plot, and k2=3.6 kg/plot. Statistical analysis of significant difference the experiment using ANOVA and the effect of different treatment analysed by Duncan’s multiple range test. The result showed that collaboration of the treatment PGPM 67 mL/L water/plot and Cascara-compost 3.6 kg/plot have shown the significant result in vegetative stage at the 7^th weeks after planting (WAP). The plant height of corn and peanut was 99.44cm and 61.18cm, cob diameter and number of pods/plant was 5.36cm and 19.97 pieces. Analysis result in the generative stage has shown in the production as 14.68 ton ha^-1 and 2.03 ton ha^-1. This study confirmed the potential model cultivation system that collaboration of PGPM and Cascara-compost could be used in optimising productivity of sub-optimal land in the tropics.

Keywords: Intercropping, Cascara-compost, peanut, plant growth promoting microorganisms (PGPM), sweet corn

Contact Address: Burhanuddin Rasyid, Hasanuddin University, Dept. of Soil Science, 90245 Makassar, Indonesia, e-mail: burrasyidunhas.ac.id