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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management

Christanti Agustina

Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Author-ID : 697220

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Soil macroporosity, physical properties and nutrient leaching after forest conversion to rubber and oil palm plantation in an Acrisol of Jambi, Indonesia Sri Rahayu Utami; Syahrul Kurniawan; Christanti Agustina; Marife De Corre
Journal of Degraded and Mining Lands Management Vol 9, No 1 (2021)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2021.091.3155

Soil degradation is expected to continue as forest conversion into other land uses increases significantly. In Indonesia, Jambi is one of the main areas for the development of oil palm and rubber, whichare mainly converted from the forest. As a base for better management, we attempted to study macro-porosity in rubber and oil palm plantation, in comparison to secondary forests. Four landuse systems (secondary forest, jungle rubber, rubber plantation and oil palm plantations) in Bukit Duabelas, Sarolangun District, Jambi Province, Sumatera, were selected for this study. The number of macropores in vertical or horizontal planes and their related factors (root mass, litter thickness, % organic C, bulk density, water content at pF 0 and pF 2.54, aggregate stability) were measured within the soil profiles. Forest conversion to jungle rubber, rubber and oil palm plantation led to a decrease of macro-porosity in the soil profile, especially in the upper 50 cm. Macropores, both at vertical and horizontal planes in the secondary forest was significantly higher than other landuses. Horizontal macropores in jungle rubber were higher than rubber and oil palm plantation, but not the vertical macropores. Among the soil properties measured, litter thickness, coarse root dry mass (Ø >2 mm), mesopores and aggregate stability were closely associated with soil macro-porosity. However, macro-porosity in the soil profile was insignificantly correlated to soil bulk density and % organic C. Increasing the number of horizontal macropores resulted in higher nutrient leaching, especially K and Na.

Improving nutrient availability in pyroclastic materials from Mount Kelud using organic and inorganic amendment Sri Rahayu Utami; Retno Suntari; Christanti Agustina; Novalia Kusumarini
Journal of Degraded and Mining Lands Management Vol 7, No 1 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2019.071.1987

Pyroclastic materials from Mount Kelud eruption which deposited in surrounding areas has very low nutrient availability. Fertilizer efficiency is normally low due to a coarse texture. This research was an attempt to increase nutrient availability using zeolite and organic matter in combination with inorganic fertilizers. The materials was treated with three rates of inorganic fertilizers (100%, 70%; 40% of the recommended rates, i.e. Urea 400 kg/ha; SP-36 150 kg/ha, and KCl 75 kg/ha), in combination with three types of amendments (zeolite, Tithonia diversifolia leaves, and cow manure at the rate of 20 t/ha), and 100% inorganic fertilizer treated materials as control, and incubated for 60 days. Soil samples were taken every 10 days after incubation and analysed for soil pH, C-organic, available N, P, K content measurement. The results showed that total N content increased with the rates of inorganic fertilizers. At 10-20 days after incubation the content of NH4+ is greater than NO3- but gradually changed after 30 days after incubation. Apparently, zeolite treated materials had lower NH4+ content than organic treated samples at 10-20 days after incubation, however at 60 days after incubation its NO3- content was relatively higher than Tithonia leaves treated samples. At 60 days after incubation, the higher the fertilizer rates, the higher the content of available P and exchangeable K. The highest content of available P and exchangeable K occurred respectively in cow manure and Tithonia diversifolia leaves treated materials. Until 60 days after incubation, organic treated materials had a higher amount of available and exchangeable K than zeolite treated materials, because they originally contain considerable P and K. However, at 60 days after incubation, zeolite treated materials contained the highest amount of NO3-. This indicated that zeolite had a higher capability to retain mineral N, hindering N removal from leaching and volatilization. A higher nutrient holding capacity could be related to the increasing cation exchange capacity after the addition of amendments, and to a lesser extend to pH and % C.

Relationship between land degradation, biophysical and social factors in Lekso Watershed, East Java, Indonesia Iva Dewi Lestariningsih; W Widianto; Christanti Agustina; S Sudarto; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 5, No 3 (2018)
Publisher : Brawijaya University

Degraded lands are getting extensive worldwide. Even its existence has projected as a solution to fulfill agricultural land scarcity to meet the global demands of food and other agricultural goods, the rate of its extension should be inhibited. Some factors play important role. This research was aimed to find the explanation about how degraded land, biophysical and social factors are related. Research site was located in Lekso Watershed, East Java, Indonesia. Land degradation is assessed by evaluation of the critical land status based on procedure established by Indonesia’s Ministry of Forestry in form of Regulation No. P.32/Menhut-II, 2009.A series of field survey using secondary data obtained from GIS tool performed to collect data for quantify the critical land status. Social factors in this study were limited on people perception, awareness and participation. These data collected by in-depth interview to the respondents. Site of presented respondent selected with purposive sampling, while the respondents in each site selected with stratified random sampling method. The research revealed that surface cover demonstrated high correlation and regression toward critical and very critical land (average r = -0.9822, R2= 0.9648). However, slope steepness located in high altitude showed a contrary trend in which increasing slope steepness decreased the number of total moderate, critical and very critical lands. The functional area of this location as protected forest gave a good surface cover on the steep slope and resulted on small area of degraded land. On the other side, negative perception about cultivation on forest and steep slope resulted in positive correlations with the area of very critical land (r = 0.6710 for cultivated forest, and r = 0.9113 for cultivated steep slope). Moreover, people awareness about flood, landslide and drought gave a negative correlation (r = -0.6274) with critical and very critical area. At last, people participation on farmers’ organization could not be used to elucidate the range of degraded land as the participation in this context did not include the competency building about soil and water conservation values.

Soil chemical properties in agroforestry and cassava cropping systems in Pati, Central Java Ursulin Sacer Setyastika; Sri Rahayu Utami; Syahrul Kurniawan; Christanti Agustina
Journal of Degraded and Mining Lands Management Vol 9, No 4 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.094.3635

Changes in natural land use for monoculture cropping systems may affect the soil properties over a certain period of time. In an attempt to evaluate soil chemical properties in the cassava cropping system, the research was conducted in Pati Regency, Central Java. Four land use systems were compared, i.e. monoculture cassava (cultivated for 5, 10, and 15 years) and agroforestry systems in two different slopes (i.e., 8-15% and 16-40%), with four replications. Soil samples from each location were taken at a depth of 0-20 and 21-40 cm for soil chemical analysis (pH, cation exchange capacity, organic C, total N, available P, exchangeable K, Ca, and Mg). Soils in agroforestry systems had higher pH, CEC, the content of organic C, total N, exchangeable K, Ca and Mg than in cassava cropping systems, especially on the slope of 8-15%. The soil under 15 years cassava and on the slope of 16-40% had the most degraded soil chemical properties, as reflected by the lowest content of organic C, total N, exchangeable K, and slightly lower CEC and the content of exchangeable Ca and Mg. Soil chemical properties on the slopes of 8-15% were significantly better than on the slopes of 16-40%, especially in CEC and the content of organic C, total N, exchangeable K and Mg. However, there was an unclear pattern of the available P content, which was possibly due to the application of P fertilizer in cassava cropping systems.

MORFOLOGI DAN KLASIFIKASI TANAH PADA BERBAGAI MACAM SUB-LANDFORM KARST DI FORMASI WONOSARI KECAMATAN GEDANGAN, KABUPATEN MALANG Andre E S Sitinjak; Mochtar Lutfi Rayes; Christanti Agustina
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 1 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Limestone materials in Wonosari formation produces karst landform through the karstification processes. The different type of karst landform can affect soil morphology and soil classification. This research was conducted in Gedangan District, Malang Regency, East Java Province, Indonesia. Soil morphology identified at 54 minipits to know the range of soil characteristics, continued with detailed survey on 6 typical pedons to detailed soil classification. Soil samples were taken at each horizon for analyses of soil physical and chemical properties. Soil morphology at study area has very dark brown (7.5YR2.5/2) to yellowish brown (10YR5/8) soil colours, silty clay loam to silty clay textures, subangular blocky, fine, weak to moderate structures, very friable to very firm, sticky to very sticky, slightly plastic to plastic consistencies. There are no rock fragments at hilly and valley karst and shallow soil depth in hilly than in valley karst. Soil classification differs at each sub landform, i.e. top hilly karst is classified as Lithic hapludolls, fine, mixed, isohyperthermic, hilly karst classified as Typic calciudolls, fine, calcareous, superactive, isohyperthermic, Typic hapludolls, fine, mixed, superactive, isohyperthermic, plateau karst classified as Inceptic haprendolls, skeletal-clay, mixed, superactive, isohyperthermic, valley karst classified as Eutric humudepts, fine, mixed, superactive, isohyperthermic, and Typic humudepts, fine, mixed, superactive, isohypertermic.

EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN TEBU PADA LAHAN KARST FORMASI WONOSARI (TMWL) KECAMATAN GEDANGAN KABUPATEN MALANG Pramudito Kartiko Dumipto; Mochtar Lutfi Rayes; Christanti Agustina
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Karst landform has different soil properties than the others land which are high clay content, low water holding capacity, relatively low nutrient availability, and in some areas it has a shallow soil that can impact the suitability of sugarcane productivity. It is necessary to analyze the suitability classes of sugarcane on karst landform based on productivity and make the criteria of sugarcane on karst landform.Â Research was conducted in Gedangan District, Malang Regency, East Java Province, Indonesia with survey method (13 land map unit) with 38 minipits and 8 soil profil as typical pedon. The modification using boundary line method by multiple regression with stepwise method which has a value of RÂ² Â³ 0,5 and percentage production class. Land suitability at study area before modification has class S3 (Marginally Suitable) and N (Not Suitable). Boundary line method results land characteristics that significantly correlate with production (organic carbon, total N, available P, exchangeable K, soil depth and slope). The boundary line method results class S2 (Moderately Suitable), S3 and N with accuration 75%. The modification with percentage production class was done (organic carbon, total N, exchangeable K, and slope) and results class S1(Highly Suitable), S2, S3, and N with accuration 91%.

PEMETAAN BAHAN ORGANIK TANAH PADA SAWAH IRIGASI DAN TADAH HUJAN DI KECAMATAN TUREN, MALANG Christanti Agustina; Mochtar Lutfi Rayes; Novalia Kusumarini; Khanza Amaladewi Sudharta
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 1 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Each land use has a different vegetation density and the litter input as a source of soil organic matter. Vegetation density index can be analyzed based on the NDVI equation using the GIS approach. This study aims to determine the effect of different land uses and NDVI on soil organic matter content and the mapping of soil organic matter content. This research was conducted from AprilÂ to August 2019 in Turen District, Malang Regency. The survey method used for collecting data in the field (36 observation points) based on differences in landform, relief, slope, land use (irrigated and rainfed rice fields), and vegetation density index classes (low, medium, high). Soil samples were taken at 0-20 cm depth and analyzed for soil organic matter content. Data interpolation using IDW was used for mapping soil organic matter. The results showed that there was a very significant effect between differences in land use and NDVI class on the content of soil organic matter (p <0.001). NDVI value gives an effect of 81.5% on soil organic matter content. The distribution of soil organic matter content is classified into 5 classes, which are very low, low, moderate, high and very high.

PEMETAAN KUALITAS TANAH PADA LAHAN SAWAH DI KECAMATAN TUREN KABUPATEN MALANG Christanti Agustina; Mochtar Lutfi Rayes; Evi Rosidha
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Rice field management affects the physical, chemical and biological characteristics of the soil, as well as crop productivity. Efforts are needed to maintain soil conditions by measuring the soil quality index. The purpose of this study was to determine the characteristics of the soil as a reference pattern of soil quality distribution. This research was conducted in July - November 2019 in Turen District, Malang, using a free survey method based on the Land Map Unit. Soil samples were taken at a depth of 0-20 cm at each observation (24 points) and analyzed in the laboratory. The soil quality index was calculated according to limiting factors and scores relative to 10 soil quality indicators. Soil quality classes are grouped into 5 classes, i.e. (i) very good (<20), (ii) good (20-25), (iii) moderate (25-30), (iv) bad (30-40) and (v) very bad (> 40). The results showed that the soil in irrigated and rainfed rice fields had different limiting factor values in the levels of available-P, total-N, soil organic-C and microbial biomass-C which caused differences in soil quality. Crop productivity on the land showed differences based on land suitability classes resulting in S1 and S2 classes

PEMETAAN SEBARAN STATUS UNSUR HARA N, P DAN K PADA LAHAN SAWAH DI KECAMATAN TUREN, KABUPATEN MALANG Christanti Agustina; Mochtar Rayes; Marinda Kuntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

The availability of nutrients plays a role in increasing crop productivity, especially primary macronutrients (nitrogen, phosphorus and potassium). This research aimed to measure the content of macronutrients and crop productivity in the rice field and to map the nutrients status. The study was conducted from July to October 2019 in Turen District. The survey method based on the boundary of the land mapping unit was used to collect field data in this study. The mapping of nutrient status created using IDW, which was interpolated data based on the assumption that values of unsampled points can be predicted as the weighted average of known values within the neighbourhood. The results showed that the nitrogen status are very low to low status (0.08% - 0.18%), the phosphorus status are very low to low status (4.5 mg kg-1 â€“ 12.37 mg kg-1) and the potassium status are at low, moderate to high status (0.25 cmol kg-1 â€“ 0.71 cmol kg-1). The availability of nitrogen nutrient is classified as S2, the availability of phosphorus nutrient is classified as S3, and the availability of potassium nutrient is classified as S1. The availability of nitrogen, phosphorus and potassium can be increased through fertilization in accordance with the needs and recommendations. The effect of the status of nitrogen, phosphorus and potassium at the end of planting on crop productivity was indicated by the regression coefficient of R2 = 0.0826.

PEMANFAATAN INDEKS VEGETASI UNTUK ESTIMASI KANDUNGAN KALIUM PADA TANAMAN NANAS (Ananas comosus) MENGGUNAKAN UAV (Unmanned Aerial Vehicle) DI PT. GREAT GIANT PINEAPPLE, LAMPUNG Dita Khairunnisa; Mochtar Lutfi Rayes; Christanti Agustina
Jurnal Tanah dan Sumberdaya Lahan Vol. 8 No. 1 (2021)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

PT Great Giant Pineapple (PT. GGP) is the largest pineapple production company in Indonesia. One of the nutrients that pineapple plants really need is potassium (K). K plays a key role in carbohydrate metabolism and transport of photosynthates from source to sink. Remote sensing technology has been developed to estimate nutrient status, one of which is using an Unmanned Aerial Vehicle (UAV). This study aims to estimate the K nutrient content in pineapple plants using vegetation indexes in the form of NDVI (Normalyzed Difference Vegetation Index), SAVI (Soil Adjusted Vegetation Index), and OSAVI (Optimized of Soil Adjusted Vegetation Index). The research was carried out by taking aerial photographs and samples of pineapple plants in the 5 months phase before forcing up to 2 months after forcing (F-5 to F + 2), laboratory analysis, statistical analysis, and making distribution maps. The results showed that the relationship between the vegetation index value and K plant was the strongest and most significant is in 1 month before forcing phase (F-1) with the same r value for the three indices vegetation (r=0.867). The results of the regression analysis between the NDVI, SAVI and OSAVI values with K plant were 75.17%, 75.18% and 75.17%, respectively. The calculation of the K estimate using three methods yields no different values. The validation results using paired t test (t count -0.63; t table 2.31; p-value 0.544) where the K content in the measured plants and the estimation results showed no significant difference with the measurement results.

Co-Authors Andi Aryananda Wahab Andre E S Sitinjak Angky Wahyu Putranto Asda Rauf Dita Khairunnisa Endang Listyarini Evi Rosidha Iva Dewi Lestariningsih Januardi Fransiskus Simanjuntak Khanza Amaladewi Sudharta Marife De Corre Marinda Kuntari Mei Ridayanti Mochamad Fikri Kurniawan Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Lutfi Rayes Mochtar Rayes Muhamad Afif Akbar Muhammad Fikri Baihaqi Novalia Kusumarini Novalia Kusumarini Novalia Kusumarini Novalia Kusumarini Nur Fadillah Aunur Rofiq Nurdin . Oktaviani Putri Lestari Pilya Tri Oktafiani Pramudito Kartiko Dumipto Retno Suntari Rinovian Tri Saputra Rizki Delfianto S Sudarto Sarah Nur Shabrina Sri Rahayu Utami Syahrul Kurniawan Ursulin Sacer Setyastika W Widianto

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