Assessing the Effect of Rubber (Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.) Leaf Chemical Composition on Some Soil Properties of Differently Aged Rubber Tree Plantations

Abstract

Leaf litter plays a major role in carbon and nutrient cycling, as well as in fueling food webs. The chemical composition of a leaf may directly and indirectly influence decomposition rates by influencing rates of biological reactions and by influencing the accumulation of soil organic carbon content, respectively. This study aimed to assess the impact of the chemical composition of rubber (Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.) leaves on various soil properties of different ages of rubber (4–5, 11–12, and 22–23 year-old). Synchrotron-based Fourier transform infrared microspectroscopy (Sr-FTIR) was utilized for analyzing the chemical composition of plant leaves. The Sr-FTIR bands illustrated that the epidermis of rubber leaves from 4–5-year-old trees was found to contain a high quantity of polysaccharides while mesophyll from 22–23-year-old trees had a large number of polysaccharides. The change in soil properties in the older rubber plantation could be attributed to its chemical composition. The change in soil properties across all tree ages, i.e., increased litter and organic carbon content, was a relatively strong driver of soil biota evolution. The aliphatic of C-H in the leaves showed high correlation with soil organic carbon (SOC) and permanganate-oxidizable C (POXC) from 22–23 year-old trees. This study shows the differences in the organic chemical composition of leaves that are consequential to soil organic carbon.

Screening rice blast-resistant cultivars via synchrotron fourier transform infrared (SR-FTIR) microspectroscopy

“…SR-FTIR microspectroscopy is a powerful technique for identifying the biochemical composition of a sample on the basis of the vibration of the functional groups of the biological molecules. In plant science, SR-FTIR microspectroscopy has been used to analyze and determine the structure and composition of plant tissues such as roots, stems, and leaves (Puttaso et al, 2020). FTIR spectroscopy can be applied to investigate the defense mechanism or interactions between plants and pathogens (Thanh et al, 2017;Thumanu et al, 2017).…”

Carbon Mineralization Dynamics of Organic Materials and Their Usage in the Restoration of Degraded Tropical Tea-Growing Soil

“…In our study, we observed the highest peaks for the emission of CO 2 -C during the first week of the incubation. Many other researchers also have observed that the CO 2 -C emission peaks during the first week [7,9,[48][49][50] and this could be due to the presence of the easily decomposable organic compounds including carbohydrates and amino acid in the organic amendments [51][52][53]. The readily decomposable organic C promotes microbial growth in the early days of the incubation stage and then decreases gradually may be attributed to the enervation of those substances.…”

Characterizing, Predicting, and Mapping Soil Available Phosphor, pH, and Electrical Conductivity in Rubber Plantation Based on Three Different Methods of Ordinary Kriging in GIS Environment

“…As a result of this, the study conducted by [8] has endeavored to establish site-specific management zones based on the variability of soil and environmental properties (pH, organic matter, total nitrogen, soil available phosphorus, available potassium, and ecological variables, namely parent materials, elevation, slope, aspect, mean precipitation, mean temperature, normalized difference vegetation index /NDVI) on rubber plantation land. Some studies have shown that better soil quality has occurred because of the increase in the age of rubber plants [9]. Another study conducted by [2] indicates that there have been both negative and positive effects on rubber plantation on soil quality.…”