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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences JTSL (Jurnal Tanah dan Sumberdaya Lahan) Agrivet Jurnal Tanah dan Air Jurnal Tanah dan Air (Soil and Water Journal)
Virgawati, Sari
Universitas Pembangunan Nasional Veteran Yogyakarta
Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Environmental Science Physics

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The assessment of land exploitation by enumerating microbial population: Case study in several locations at Dieng Plateau Sumarsih, Sri; Virgawati, Sari
Journal of Tropical Life Science Vol 3, No 3 (2013)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Agricultural intensification program in Indonesia which is carried out by using high yield variety, high chemicals use and soil disturbances tends to trigger land exploitation. Land exploitation, performed without considering the lands capability can generate degradations on the land itself. Various methods have been used to determine land exploitation level, including evaluation of soil microbe resources as on soil component. This research is aimed to assess land exploitation level, based on the amount of microbial population. The result of this research is expected to add the soil quality standard criteria. In the case study performed in Dieng plateau, representative soil sampling method was used. The amount of microbial population can be enumerated using plating and MPN method. Based on nutrient availability to indicate the soil biological characteristics, the soil under the trees, shrub, and Colocasia were classified as “below normal”, and the soil under the grass, tobacco, cabbage and potato were classified as normal. It shows that the land exploitation at the agricultural soils were still in the range of its land capability.
ARABICA AND ROBUSTA COFFEE PRODUCTION IN DIFFERENT GROWING ENVIRONMENTS ON THE SLOPES of MOUNT ARJUNA MALANG Ari Wijayani; Sari Virgawati; Ninik Probosari
Jurnal Agrivet Vol 27, No 2 (2021): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v27i2.5654

Abstract

The area on the slopes of Mount Arjuna that has the potential to be developed as a center for Arjuna coffee is Toyomarto, which is located in Singosari District, Malang Regency at an altitude of 700-1400 meters above sea level. The types of coffee produced from the Toyomarto, Singosari plantations are Arabica and Robusta. The characteristics of the coffee have a sweet-sour character and a fruity aroma such as bananas, apples, and so on. The problem, in the field, shows that the low quality of coffee is due to the absence of standard methods of cultivation and post-harvest handling. At different altitudes, it shows differences in coffee production as well. The average productivity of Arabica coffee at an altitude of 1100 m above sea level is 55.97 tons, significantly different from coffee cultivated at an altitude below 1000 m above sea level. Meanwhile, Robusta coffee production is not significantly different at all altitudes where it is cultivated.
STATUS KESUBURAN TANAH PADA LAHAN SAWAH DILINDUNGI YANG BERALIH FUNGSI DI KAPANEWON SEYEGAN, KABUPATEN SLEMAN, DAERAH ISTIMEWA YOGYAKARTA Hermansyah, Alvin Dwi; Partoyo, Partoyo; Virgawati, Sari
Jurnal Tanah dan Sumberdaya Lahan Vol. 11 No. 1 (2024)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2024.011.1.22

Abstract

The conversion of rice fields in Seyegan is suspected to occur due to low soil fertility. This study was conducted to analyze the extent and distribution of conversion of rice fields associated with soil fertility status. This study used a survey method, purposive determination of sample points on rice fields representing the converted rice fields, and soil samples were taken compositely. Data analysis used spatial analysis, graphs, and laboratory tests. The parameters tested were cation exchange capacity (CEC), Base Saturation, potential P2O5, potential K2O, and organic C. Determination of soil fertility status was based on The Technical Guidelines For Soil Fertility Evaluation of Soil Research Center. The results showed that the area of rice fields in Seyegan District in 2015-2022 decreased by 55.26 ha (3.76%), with an average annual decrease of 7.89 ha. The soil fertility status in rice fields converted into settlements was very low to medium, rice fields into dryland and poultry farming were medium, and rice fields into shrubs and factories were low. The limiting factors of soil fertility were CEC and organic C.
Dinamika Unsur Hara Makro dan Mikro pada Proses Pembuatan Pupuk Organik Dari Limbah Sayur dan Buah Pasar Tradisional dengan Teknik Ember Tumpuk Kirana, Dinda Setya; Wahyuni, Riska Widia; Munawar, Ali; Partoyo, Partoyo; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 20, No 2 (2023)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v20i2.13218

Abstract

Limbah organik yang berasal dari sayuran dan buah-buahan di pasar tradisional belum dikelola dengan baik, bahkan cenderung menjadi bahan pencemar bagi lingkungan di sekitarnya. Limbah tersebut berpotensi dimanfaatkan untuk menjadi bahan baku pembuatan pupuk organik. Penelitian ini bertujuan untuk mengetahui kandungan hara makro yaitu  N, P, dan K dan hara mikro Fe, Mn, dan Cu pada lindian dan sisa padatan kompos dari proses pengomposan dengan Teknik Ember Tumpuk, mengetahui kualitas hasil pupuk organik cair dan padat (POC dan POP) hasil pembuatan pupuk organik dengan Teknik Ember Tumpuk dan mengetahui waktu panen POC yang terbaik untuk mendapatkan kandungan N, P, K, Fe, Mn, dan Cu tertinggi pada pembuatan (POC) dengan Teknik Ember Tumpuk dari limbah organik sayur dan buah. Metode yang digunakan yaitu deskriptif kualitatif dengan pengamatan langsung di lapangan dan pembuatan pupuk organik cair serta metode kuantitatif dengan analisis laboratorium. Parameter yang diamati meliputi pH, kadar C-organik, N-total, P2O5, K2O, Fe, Mn dan Cu pada lindian dan padatan kompos. Data yang diperoleh kemudian disajikan dalam bentuk tabel yang kemudian dibandingkan dengan data di Keputusan Menteri Pertanian Republik Indonesia No. 261/KPTS/SR.310/M/4/2019 tentang Persyaratan Teknis Minimal Pupuk Organik. Hasil penelitian menunjukkan bahwa total konsentrasi tertinggi Pada Unsur Hara Mikro N-total, P2O5, dan K2O POC yaitu pada minggu ke-10 sebesar 0,204%. Konsentrasi tertinggi Hara Mikro Fe, Mn, dan Cu yaitu pada minggu ke-10 sebesar 10,26 ppm, 0,46 ppm dan 3,31 ppm. Seluruh pemanenan POC yang dihasilkan belum dapat memenuhi Standar mutu POC. Padatan kompos yang dihasilkan untuk unsur Hara Makro sudah memenuhi syarat mutu POP yaitu sebesar 5,351%. Sedangkan untuk unsur Hara Mikro masih belum memenuhi syarat mutu POP.
Dinamika Unsur Hara Makro dan Mikro pada Proses Pembuatan Pupuk Organik Dari Limbah Sayur dan Buah Pasar Tradisional dengan Teknik Ember Tumpuk Kirana, Dinda Setya; Wahyuni, Riska Widia; Munawar, Ali; Partoyo, Partoyo; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 20, No 2 (2023)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v20i2.13218

Abstract

Limbah organik yang berasal dari sayuran dan buah-buahan di pasar tradisional belum dikelola dengan baik, bahkan cenderung menjadi bahan pencemar bagi lingkungan di sekitarnya. Limbah tersebut berpotensi dimanfaatkan untuk menjadi bahan baku pembuatan pupuk organik. Penelitian ini bertujuan untuk mengetahui kandungan hara makro yaitu  N, P, dan K dan hara mikro Fe, Mn, dan Cu pada lindian dan sisa padatan kompos dari proses pengomposan dengan Teknik Ember Tumpuk, mengetahui kualitas hasil pupuk organik cair dan padat (POC dan POP) hasil pembuatan pupuk organik dengan Teknik Ember Tumpuk dan mengetahui waktu panen POC yang terbaik untuk mendapatkan kandungan N, P, K, Fe, Mn, dan Cu tertinggi pada pembuatan (POC) dengan Teknik Ember Tumpuk dari limbah organik sayur dan buah. Metode yang digunakan yaitu deskriptif kualitatif dengan pengamatan langsung di lapangan dan pembuatan pupuk organik cair serta metode kuantitatif dengan analisis laboratorium. Parameter yang diamati meliputi pH, kadar C-organik, N-total, P2O5, K2O, Fe, Mn dan Cu pada lindian dan padatan kompos. Data yang diperoleh kemudian disajikan dalam bentuk tabel yang kemudian dibandingkan dengan data di Keputusan Menteri Pertanian Republik Indonesia No. 261/KPTS/SR.310/M/4/2019 tentang Persyaratan Teknis Minimal Pupuk Organik. Hasil penelitian menunjukkan bahwa total konsentrasi tertinggi Pada Unsur Hara Mikro N-total, P2O5, dan K2O POC yaitu pada minggu ke-10 sebesar 0,204%. Konsentrasi tertinggi Hara Mikro Fe, Mn, dan Cu yaitu pada minggu ke-10 sebesar 10,26 ppm, 0,46 ppm dan 3,31 ppm. Seluruh pemanenan POC yang dihasilkan belum dapat memenuhi Standar mutu POC. Padatan kompos yang dihasilkan untuk unsur Hara Makro sudah memenuhi syarat mutu POP yaitu sebesar 5,351%. Sedangkan untuk unsur Hara Mikro masih belum memenuhi syarat mutu POP.
PENENTUAN STATUS KEKERINGAN BERDASARKAN SUHU PERMUKAAN DAN INDEKS KELEMBABAN TANAH MENGGUNAKAN CITRA LANDSAT 8 DI KAPANEWON PAJANGAN KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA Wasitama, Firdauzi; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13950

Abstract

Drought cases in Kapanewon Pajangan Bantul Regency often occur. The purpose of this study was to determine the level of soil moisture, land surface temperature conditions, and make a map of the distribution of drought status with a spatial approach to the Normalize Difference Moisture Index (NDMI), Land Surface Temperature (LST), and Normalize Difference Vegetation Index (NDVI) methods based on Landsat 8 imagery. The results showed that the soil moisture index was divided into 3 classes, namely humid with an area of 206,80 ha (6,27%), dry with an area of 2985,99 ha (90,53%), and very dry with an area of 105,649 ha (3,20%). The land surface temperature level is divided into 4 classes, namely very low (< 22,77 oC) with an area of 144,46 ha (4,38%), low (22,77 oC – 23,17 oC) with an area of 231,06 ha (7,31%), medium (23,17oC – 24,77oC) with an area of 2453,80 ha (74,37%), and high (> 24,77 oC) with an area of 460,15 ha (13,95%). The drought status in Kapanewon Pajangan is divided into 3 drought classes, namely low class with an area of 477,31 ha (14,55%), medium class with an area of 2589,98 ha (78,98%), and high class with an area of 212,15 ha (6,47%). The results of the Pearson correlation test of soil moisture index to water content at pF 2,54 and pF 4,2 included a strong positive correlation (r = 0,720 and r = 0,780). Pearson correlation test results of greenness level to water content at pF 2,54 had a moderately strong positive correlation (r = 0,598) and at pF 4,2 had a strong positive correlation (r = 0,783). Pearson correlation test results of LST soil surface temperature to moisture content at pF 2,54 had a strong negative correlation (r = -0,724) and at pF 4,2 had a very strong negative correlation (r = -0,838), while the correlation results with field soil surface temperature at pF 2,54 and pF 4,2 had a strong negative correlation (r = -0,631 and r = -0,787).
Estimation of Potassium Content in Salak Plants Using Green Normalized Difference Vegetation Index Method in Wonokerto Village, Turi, Sleman, Yogyakarta: Estimasi Kandungan Kalium pada Tanaman Salak Menggunakan Metode Green Normalized Difference Vegetation Index di Kalurahan Wonokerto, Turi, Sleman, Yogyakarta Ramadhani Muhammad Yusuf Ardiansyah; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15258

Abstract

Salak (Salacca zalacca) is a major horticultural crop in Sleman Regency, Yogyakarta, yet recent years have seen a decline in its productivity, potentially due to potassium (K) deficiency. This study aims to estimate potassium content in Salak plant tissues using the Green Normalized Difference Vegetation Index (GNDVI) derived from Sentinel-2 satellite imagery and to evaluate the accuracy of this approach against laboratory-based measurements. The research was conducted in Wonokerto Village, Turi District, Sleman Regency, employing a quantitative descriptive method. A total of 30 sampling points were selected, comprising 20 prediction points and 10 reference points. GNDVI values were extracted through Sentinel-2 image processing using ArcGIS software, while potassium content in leaf tissue was determined via the wet digestion method using HNO₃ and HClO₄. Leaf samples were collected from the central part of the midrib, serving as a physiological indicator of plant nutrient status. Statistical analyses included Pearson’s correlation, linear regression, paired sample t-test, and Root Mean Square Error (RMSE) assessment. The findings revealed a correlation coefficient (r) of 0.604, indicating a strong positive relationship between GNDVI and potassium content. The regression analysis showed no significant difference between predicted and observed values, while the RMSE value of 0.19445 suggested a low prediction error. These results demonstrate that GNDVI has strong potential as a non-destructive, efficient, and cost-effective tool for estimating potassium levels in Salak plant tissues. The resulting prediction map can be applied to support more precise potassium fertilization strategies in Salak cultivation within the study area.
PENENTUAN STATUS KEKERINGAN BERDASARKAN SUHU PERMUKAAN DAN INDEKS KELEMBABAN TANAH MENGGUNAKAN CITRA LANDSAT 8 DI KAPANEWON PAJANGAN KABUPATEN BANTUL DAERAH ISTIMEWA YOGYAKARTA Wasitama, Firdauzi; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13950

Abstract

Drought cases in Kapanewon Pajangan Bantul Regency often occur. The purpose of this study was to determine the level of soil moisture, land surface temperature conditions, and make a map of the distribution of drought status with a spatial approach to the Normalize Difference Moisture Index (NDMI), Land Surface Temperature (LST), and Normalize Difference Vegetation Index (NDVI) methods based on Landsat 8 imagery. The results showed that the soil moisture index was divided into 3 classes, namely humid with an area of 206,80 ha (6,27%), dry with an area of 2985,99 ha (90,53%), and very dry with an area of 105,649 ha (3,20%). The land surface temperature level is divided into 4 classes, namely very low (< 22,77 oC) with an area of 144,46 ha (4,38%), low (22,77 oC – 23,17 oC) with an area of 231,06 ha (7,31%), medium (23,17oC – 24,77oC) with an area of 2453,80 ha (74,37%), and high (> 24,77 oC) with an area of 460,15 ha (13,95%). The drought status in Kapanewon Pajangan is divided into 3 drought classes, namely low class with an area of 477,31 ha (14,55%), medium class with an area of 2589,98 ha (78,98%), and high class with an area of 212,15 ha (6,47%). The results of the Pearson correlation test of soil moisture index to water content at pF 2,54 and pF 4,2 included a strong positive correlation (r = 0,720 and r = 0,780). Pearson correlation test results of greenness level to water content at pF 2,54 had a moderately strong positive correlation (r = 0,598) and at pF 4,2 had a strong positive correlation (r = 0,783). Pearson correlation test results of LST soil surface temperature to moisture content at pF 2,54 had a strong negative correlation (r = -0,724) and at pF 4,2 had a very strong negative correlation (r = -0,838), while the correlation results with field soil surface temperature at pF 2,54 and pF 4,2 had a strong negative correlation (r = -0,631 and r = -0,787).
Estimation of Potassium Content in Salak Plants Using Green Normalized Difference Vegetation Index Method in Wonokerto Village, Turi, Sleman, Yogyakarta: Estimasi Kandungan Kalium pada Tanaman Salak Menggunakan Metode Green Normalized Difference Vegetation Index di Kalurahan Wonokerto, Turi, Sleman, Yogyakarta Ramadhani Muhammad Yusuf Ardiansyah; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15258

Abstract

Salak (Salacca zalacca) is a major horticultural crop in Sleman Regency, Yogyakarta, yet recent years have seen a decline in its productivity, potentially due to potassium (K) deficiency. This study aims to estimate potassium content in Salak plant tissues using the Green Normalized Difference Vegetation Index (GNDVI) derived from Sentinel-2 satellite imagery and to evaluate the accuracy of this approach against laboratory-based measurements. The research was conducted in Wonokerto Village, Turi District, Sleman Regency, employing a quantitative descriptive method. A total of 30 sampling points were selected, comprising 20 prediction points and 10 reference points. GNDVI values were extracted through Sentinel-2 image processing using ArcGIS software, while potassium content in leaf tissue was determined via the wet digestion method using HNO₃ and HClO₄. Leaf samples were collected from the central part of the midrib, serving as a physiological indicator of plant nutrient status. Statistical analyses included Pearson’s correlation, linear regression, paired sample t-test, and Root Mean Square Error (RMSE) assessment. The findings revealed a correlation coefficient (r) of 0.604, indicating a strong positive relationship between GNDVI and potassium content. The regression analysis showed no significant difference between predicted and observed values, while the RMSE value of 0.19445 suggested a low prediction error. These results demonstrate that GNDVI has strong potential as a non-destructive, efficient, and cost-effective tool for estimating potassium levels in Salak plant tissues. The resulting prediction map can be applied to support more precise potassium fertilization strategies in Salak cultivation within the study area.
Dinamika Unsur Hara Makro dan Mikro pada Proses Pembuatan Pupuk Organik Dari Limbah Sayur dan Buah Pasar Tradisional dengan Teknik Ember Tumpuk Kirana, Dinda Setya; Wahyuni, Riska Widia; Munawar, Ali; Partoyo, Partoyo; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 20 No 2 (2023)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v20i2.13218

Abstract

Limbah organik yang berasal dari sayuran dan buah-buahan di pasar tradisional belum dikelola dengan baik, bahkan cenderung menjadi bahan pencemar bagi lingkungan di sekitarnya. Limbah tersebut berpotensi dimanfaatkan untuk menjadi bahan baku pembuatan pupuk organik. Penelitian ini bertujuan untuk mengetahui kandungan hara makro yaitu  N, P, dan K dan hara mikro Fe, Mn, dan Cu pada lindian dan sisa padatan kompos dari proses pengomposan dengan Teknik Ember Tumpuk, mengetahui kualitas hasil pupuk organik cair dan padat (POC dan POP) hasil pembuatan pupuk organik dengan Teknik Ember Tumpuk dan mengetahui waktu panen POC yang terbaik untuk mendapatkan kandungan N, P, K, Fe, Mn, dan Cu tertinggi pada pembuatan (POC) dengan Teknik Ember Tumpuk dari limbah organik sayur dan buah. Metode yang digunakan yaitu deskriptif kualitatif dengan pengamatan langsung di lapangan dan pembuatan pupuk organik cair serta metode kuantitatif dengan analisis laboratorium. Parameter yang diamati meliputi pH, kadar C-organik, N-total, P2O5, K2O, Fe, Mn dan Cu pada lindian dan padatan kompos. Data yang diperoleh kemudian disajikan dalam bentuk tabel yang kemudian dibandingkan dengan data di Keputusan Menteri Pertanian Republik Indonesia No. 261/KPTS/SR.310/M/4/2019 tentang Persyaratan Teknis Minimal Pupuk Organik. Hasil penelitian menunjukkan bahwa total konsentrasi tertinggi Pada Unsur Hara Mikro N-total, P2O5, dan K2O POC yaitu pada minggu ke-10 sebesar 0,204%. Konsentrasi tertinggi Hara Mikro Fe, Mn, dan Cu yaitu pada minggu ke-10 sebesar 10,26 ppm, 0,46 ppm dan 3,31 ppm. Seluruh pemanenan POC yang dihasilkan belum dapat memenuhi Standar mutu POC. Padatan kompos yang dihasilkan untuk unsur Hara Makro sudah memenuhi syarat mutu POP yaitu sebesar 5,351%. Sedangkan untuk unsur Hara Mikro masih belum memenuhi syarat mutu POP.
Co-Authors Ali Munawar Ari Wijayani Hermansyah, Alvin Dwi Kirana, Dinda Setya Ninik Probosari Partoyo, Partoyo Ramadhani Muhammad Yusuf Ardiansyah Sri Sumarsih Wahyuni, Riska Widia Wasitama, Firdauzi