Fertilization Effects on Early Growth, Aboveground Biomass, Carbon Storage, and Leaf Characteristics of Eucalyptus pellita F. Muell. in South Sumatera

Abstract

Yogyakarta, Indonesia 55281Jln. PT TEL Rambang Dangku, Muara Enim, Indonesia 31172 -Fertilization is one of the nutrient management efforts that play an important role in improving the productivity of plantation forests. It was conducted to provide adequate nutrients for the plant at the initial growth period when the availability of soil nutrients is very limited. The optimum dose of fertilization for each plant is different depending on its requirement, climate, and soil properties. This study investigated the influence of fertilization on early growth, aboveground biomass, carbon storage, and leaf characteristics in Eucalyptus pellita in the sixth months after field establishment. An experiment comprising four treatments of fertilization, i.e., 0, 75, 133, and 167 kg ha of triple superphosphate 46% P O was set up using randomized complete block design with five replications. Four indicators were selected to evaluate the early growth of E. pellita, namely survival rate, height, the collar of diameter, and crown projection area. Aboveground biomass and carbon storage of E. pellita were estimated in each component, covering stem, bark, branches, and leaves. The leaf characteristics of E. pellita described by individual leaf area, individual leaf dry weight, specific leaf area, and leaf area index Results showed that the different treatment of fertilization did not have a meaningful effect on survival rate, individual leaf area, and specific leaf area. The treatments presented a substantial effect on other indicators such as height, diameter, crown projection area, aboveground biomass, carbon storage, individual leaf dry weight, and leaf area index. Despite the fact that the highest mean of height and collar of diameter were observed in the dose of 167 kg ha , the greatest average of aboveground biomass and carbon storage were noted in the rate of 133 kg ha . Nevertheless, this study did not find a highly different performance of E. pellita between both treatments statistically.-1 2 5were .-1 -1

Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia

“…The fresh weight of every component was measured using a hanging balance in the field. Then, 500 g sub-sample from each part was taken to the laboratory to be dried (Wirabuana et al 2019). The drying process was done using an oven at 70 0 C for 48 hours before weighting for biomass determination (Hakamada et al 2017).…”

“…The drying process was done using an oven at 70 0 C for 48 hours before weighting for biomass determination (Hakamada et al 2017). Total biomass in each component of sample trees was computed by multiplying the ratio of dry-fresh weight from sub-sample with the total fresh weight of each component which was recorded from the field survey (Hakamada et al 2017;Altanzagas et al 2019;Wirabuana et al 2019).…”

Soil chemical properties influences on the growth performance of Eucalyptus urophylla planted in dryland ecosystems, East Nusa Tenggara

“…It indicated that the eucalypts species in this site is very responsive to the availability of phosphorus in soil (Crous et al, 2015;Tng et al, 2014;Wirabuana et al, 2020). Many references also confirmed that phosphorus is the primary nutrient needed by eucalyptus (Amezquita et al, 2018;Bassaco et al, 2018;Wirabuana et al, 2019), especially in acid soil with low availability of phosphorus (Wang et al, 2015). Several previous studies in other locations also documented that the practice of phosphate fertilizer provides a positive effect on the eucalypts productivity (Gotore et al, 2014;Melo et al, 2016;Wirabuana et al, 2020).…”

Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana)

“…In Riau, the additional NPK fertilizer on E. hybrid (E. grandis × E. pellita) can improve total aboveground biomass around 105% greater than in trees without fertilization treatment at two years (Halomoan et al, 2015). Meanwhile, a study from South Sumatra reports that phosphorus fertilization on the growth performance of E. pellita plantation substantially increases total aboveground biomass approximately 100-300% higher than unfertilized trees six months after establishment (Wirabuana et al, 2019). Those examples indicate the importance meaning of fertilization as a silvicultural regime in a eucalyptus plantation.…”

“…The majority of the rainfall occurred between October and May, with the highest rainfall was recorded every December. Dry periods were relatively longer for four months between June to September (Wirabuana et al, 2019). Before establishing the eucalyptus plantation, the majority of areas in MHP were covered by acacia plantation (Hardiyanto & Nambiar, 2014).…”