Changes of Soil Properties on Various Ages of Rubber Trees in Dhamasraya, West Sumatra, Indonesia

Abstract

Loss of soil organic matter can be caused by erosion triggered by soil compaction and high rainfall. The aims of the study were to determine (1) the loss of soil organic matter, lignocellulose, and soil microbial population due to erosion and (2) the contribution of organic matter from oil palm fronds. In the current study, the erosion plots were built on the accessible inter-row (gawangan hidup) and inaccessible inter-row (gawangan mati) of oil palm plantations located at the slope of 6-10% and >10%. Soil organic matter, lignin, cellulose, and hemicellulose contents and total soil microbial populations were measured in the sediments collected from the erosion plots. The results showed that the loss of organic matter was higher in the accessible inter-row than that in the inaccessible inter-row. The addition of lignin, cellulose, and hemicellulose from oil palm fronds into the soil are 2.06 Mg ha -1 yr -1 , 1.13 Mg ha -1 yr -1 and 1.02 Mg ha -1 yr -1 , respectively. Total bacterial population in the sediments taken from the accessible inter-row was higher than that from the inaccessible inter-row, while the total fungal population in the sediments from the inaccessible inter-row was higher than that from the accessible inter-row.

Effect of multipurpose trees and shrubs on degraded mined‐out soil in a semi‐deciduous forest zone of West Africa

“…The increased sand content in the NR site may be due to the gradual washing away of clay, which is the finest particle, as there was no tree cover to reduce the incidence of rain drop and the subsequent erosion (Luna, Vignozzi, Miralles, & Solé‐Benet, ; Yasin et al, ). Chatterjee, Lal, Shrestha, and Ussiri (), however, observed a lower sand fraction (21%) on reclaimed forest soil than undisturbed forest soil (36%).…”

“…Many researchers have described the use of trees for rehabilitating marginal sites in temperate zone (Augusto, Ranger, Binkley, & Rothe, 2002;Binkley & Valentine, 1991;Kiran, Kudesia, & Amit, 2009). However, not much scientific data in the tropical zone using indigenous trees are available (Kaye, Binkley, Zou, & Parrotta, 2002;Yasin, Junaidi, Wahyudi, & Herlena, 2010). Kiran et al (2009) reported that indigenous species were successful in environmental rehabilitation in India.…”

Carbon Sequestration Potential and Edaphic Properties Along the Plantation Age of Rubber in Tripura, Northeastern India

“…The reported value of soil particles is comparable to other study. yasin et al, (2014) 32 have reported that the sand content was relatively high in 10(25.99%) and 15(25.08%) year old rubber plantation than 20 years (24.0%). Clay content decreased with increase in age from 10 to 15 years.…”

“…The value ranged from 1.57±0.06 (HB05) to 1.42±0.06 (HB10) and its value significantly varied (ANOVA, F 3, 16 = 5.82; p <0.01) among the plantations. yasin et al, (2014) 32 have reported that bulk density gradually decreased from 5 to 20 years rubber plantation in 0-20 cm soil depth. The lower value of bulk density in the young plantation may be due to fact that it was strongly affected by land preparation which may destroy soil structure.…”

“…The clay, silt and sand content were 24.84, 28.41 and 46.75%, respectively (Figure 3). The percent clay These relations have showed that clayey soil has more potential for carbon storage than sandy soil 32 . Therefore the percentage of clay content or alternately clay and silt are good predictor for carbon 32 .…”