EVALUATION OF LAND AND WATER MANAGEMENT OPTIONS TO ENHANCE PRODUCTIVITY OF RUBBER PLANTATION USING WaNuLCAS MODEL

Abstract

This research aimed to determine the best land and water management by arrangement of plant spacing, irrigation, and drainage of rubber plantation in order to improve rubber plantation productivity. This research was done using The WaNuLCAS (Water, Nutrient and Light Capture in Agroforestry System) model to determine the best land and water management under several scenario combinations of two factors. The first factor was rubber plant spacing arrangement system, which consisted of three levels, i.e. single row (3 x 7 m), single row (3 x 6 m) and double row (2 x 6 x 14 m). The second factor was water management treatment, which consisted of four levels, i.e. without irrigation and drainage, irrigation in dry season, drainage in wet season, and irrigation and drainage in dry and wet season respectively. The results showed that drainage treatment could enhance rubber plantation productivity. Moreover, rubber plantations which were using single row (3 x 7 m), single row (3 x 6 m) and double row (2 x 6 x 14 m) had no significant difference on latex production per hectare.

Implementing a New Rubber Plant Functional Type in the Community Land Model (CLM5) Improves Accuracy of Carbon and Water Flux Estimation

“…While data from site-level studies that utilize field-based techniques are essential for examining how carbon and water cycling processes are influenced by land-use conversion to rubber plantations [12,13], there are inherent shortcomings when extrapolating short-term site-level observations to longer temporal and larger spatial scales. Therefore, ecosystem modeling that represents a mechanistic understanding of ecosystem function and processes is often used [14]. For example, Kumagai et al [15] developed a soil-vegetation-atmosphere transfer model for rubber plantations (SVAT-rubber).…”

“…Parameter values for tropical deciduous PFT (default/baseline values) and rubber PFT. The parameterized values are either the measured values taken from literature[14,16,34,41,48,49] or calibrated value.…”

Hi-sAFe: A 3D Agroforestry Model for Integrating Dynamic Tree–Crop Interactions

“…The most commonly and successfully used agroforestry model is WaNuLCAS [36], which is the only model capable of integrating light, water, and nitrogen competition for an entire system rotation. WaNuLCAS has been used successfully in a range of tropical agroforestry systems [37][38][39][40], but was not designed for temperate systems. Application of all agroforestry models to date has remained limited due to inadequate flexibility, restricted complexity in simulating interactions, or difficult parameterization requirements [17].…”

PENGGUNAAN MODEL WaNuLCAS UNTUK MANAJEMEN TUMPANG SARI PADA PERKEBUNAN KARET

“…Selain itu, juga disampaikan bahwa jika penanaman Acacia mangium dilakukan setelah tanaman karet berumur lima tahun, pertumbuhan tanaman karet tidak akan terpengaruh oleh keberadaan Acacia mangium. Cahyo et al (2013) menemukan bahwa dengan mensimulasikan data hasil penelitian tanaman sela oleh Wibawa et al (1999) Suprayogo (2003) yang m e n y a t a k a n b a h w a W a N u L C A S menghasilkan data hasil simulasi yang mendekati data pengamatan di lapangan untuk parameter biomassa tanaman jagung dan kacang tanah yang ditanam secara monokultur.…”