Pengaruh pemberian amelioran dolomit dengan pupuk kandang ayam terhadap tanaman pakcoy yang tumbuh di lahan gambut

Penelitian ini bertujuan untuk mengetahui pengaruh bahan amelioran terhadap produktivitas tanaman pakcoy di tanah gambut. Metode penelitian ini menggunakan Rancangan Acak Lengkap (RAL) non faktorial dengan 7 taraf perlakuan, di ulang sebanyak 5 kali. Perlakuan tanpa amelioran sebagai kontrol (G0P0), Pupuk Kandang Ayam 10 t ha-1 (G0P1), Pupuk Kandang Ayam 20 t ha-1 (G0P2), Pupuk Kandang Ayam 30 t ha-1 (G0P3), Dolomit 4 t ha-1 + Pupuk Kandang Ayam 10 t ha-1 (G1P1), Dolomit 4 t ha-1 + Pupuk Kandang Ayam 20 t ha-1 (G1P2) dan Dolomit 4 t ha-1 + Pupuk Kandang Ayam 30 t ha-1 (G1P3). Penelitian dilaksanakan di UPT CIMTROP Universitas Palangka Raya, Kecamatan Jekan Raya, Kota Palangka Raya pada bulan Juli hingga Agustus 2020. Variabel yang diamati meliputi tinggi tanaman, luas daun, berat kering brangkasan dan berat kering akar tanaman pakcoy. Hasil penelitian menunjukkan dari semua parameter pertumbuhan tanaman pakcoy, dosis kombinasi dolomit 4 t ha-1 + kotoran ayam 30 t ha-1 berpengaruh terhadap peningkatan produktivitas rata-rata tertinggi dari semua perlakuan

Analisis Tingkat Kesuburan Tanah Lahan Bekas Penambangan Batubara PT. Senamas Energindo Mineral Kabupaten Barito Timur Provinsi Kalimantan Tengah

Kesuburan tanah adalah potensi tanah untuk menyediakan unsur hara dalam jumlah yang cukup dalam bentuk yang tersedia dan seimbang untuk menjamin pertumbuhan tanaman yang maksimum. Dalam rangka meminimalisasi kerusakan tanah bekas panambangan batubara dan proses degradasi lahan yang terus berlanjut, maka upaya konservasi tanah pada lahan bekas penambangan batubara perlu didukung oleh data informasi, diantaranya status tingkat kesuburan tanahnya. Penelitian ini bertujuan untuk mengetahui tingkat kesuburan tanah di lahan bekas penambangan batubara PT. Senamas Enegindo Mineral. Dari hasil penelitian ini didapatkan informasi tentang kondisi tanahnya yang diharapkan dapat dijadikan bahan pertimbangan dalam rangka upaya reklamasi dengan tujuan revegetasi di lahan bekas penambangan batubara. Metode yang digunakan untuk menentukan lokasi titik pengamatan ditentukan dengan cara purposive sampling. Sampel tanah terganggu diambil dari 5 titik pengamatan yang dilakukan dengan cara komposit kurang lebih sebanyak 1 kg, selanjutnya dianalisis di laboratorium. Parameter yang diamati tekstur (pasir, debu, liat), C-organik, N, P, K-dd, Ca-dd, Na-dd, Mg-dd, kapasitas tukar kation (KTK), kejenuhan basa (KB) dan pH (H2O). Hasil penelitian menunjukkan tekstur tanah tergolong lempung berpasir dan pasir berlempung sedangkan tingkat kesuburan tanah pada lahan bekas penambangan batubara umumnya masih sangat rendah. Upaya perbaikan tingkat kesuburan tanah yaitu dengan pemberian pupuk organik dan anorganik, kompos dan jamur mikoriza

EFFECT OF DOLOMITE AND CHICKEN MANURE APPLICATION ON PAK CHOI (Brassica rapa chinensis) PRODUCTION AND CARBON DIOXIDE EMISSIONS IN TROPICAL PEATLANDS

The current study was aimed to determine the effect of ameliorant on Pak choi (Brassica rapa chinensis) productivity, CO2 emissions, and factors affecting the rate of CO2 emission. The study was carried out using a non-factorial completely randomized design with seven treatments. The imposed treatment are without ameliorant (control), 10, 20, 30 ton ha-1 chicken manure, 4 ton ha-1 Dolomite + Chicken Manure @ 10 ton ha-1, Dolomite 4 ton ha-1 + Chicken Manure @ 20 ton ha-1 and Dolomite 4 ton ha-1 + Chicken Manure @ 30 ton ha-1. The variables observed are the chemical properties of peat soil, fresh and dry weight of pak choi, CO2 emissions, and factors that affect CO2 emissions. The results of the study revealed that the combination of Dolomite and chicken manure has a significant effect on the studied parameters and the combination of 4 ton ha-1 dolomite + 30 ton ha-1 chicken manure had the highest pH change (average of 6.36), highest productivity, and CO2 emission (344.42 mg cm-2hr-1). Results of the study can be concluded that Dolomite and chicken manure has a significant effect on the various growth parameters of B. rapa chinensis and the properties of the peat soil

Evaluasi Kelayakan Berdasarkan Aspek Geologi Lingkungan Untuk Penentuan TPA Kota Palangka Raya

Regional feasibility analysis of landfill locations based on the environmental geology point is the initial selection in the planning of landfill sites. This research aims to assess the regional feasibility zones for landfill site in Palangka Raya city based on the environmental aspects. Observational examination and spatial analysis using geographic information system (GIS) were applied to ascertain the determination and limitation factors. The result shows that Palangka Raya could be categorized into 3 (three) zones in terms of its feasibility for the landfill area. Unsuitable zone covering an area of 165,936.69 hectares or 58.12% of total area, followed by a moderately suitable zone of 782.25 hectares (32.85%), and least suitable zone of 25,788.88 hectares (9.03%). The infeasible ones are located in districts of Sebangau and Pahandut, and some parts of Jekan Raya

PEMANTAUAN PERILAKU TUMBUHAN MIMOSA PUDICA TERHADAP EFEK GERHANA MATAHARI TOTAL BERBASIS WIRELESS SMART SENSOR

The phenomenon of a total solar eclipse (total solar eclipse) can only occur within a period of 100 years, until now, even the natural phenomena related research is very interesting to do mainly related to metabolic processes that occur in green plants or high level. In the study, the behavior of Mimosa pudica plant will be measured by using a sensor device. The sensor device with PISA algorithm will monitor environmental factors such as light intensity, temperature, humidity and atmospheric pressure at the time of a solar eclipse total. In this case, changes in the behavior of Mimosa pudica plant to sunlight will be validated by using a digital camera to obtain information leaf movement. The results of this study the sun upon the occurrence of a total eclipse, the temperature conditions around the plant Mimosa pudica average 26oC. The movement of the leaves of Mimosa pudica move to close when the temperature of 25° C at 07. 43 pm. Leaves of Mimosa pudica reopened at 7:52 pm when the temperature is more than 27oC. sunlight at 7:24 o'clock pm at the time of the total solar eclipse of 1800 Lux. From the results of the measurements, light intensity sensor node at 07:25 - 07.29 pm downhill until the condition is 0 Lux, which means the condition is very dark with no light around the plant. From the results of measurements made at 07:39 hours GMT where the changes in air temperature around the leaf on the value of 25.59°C and light intensity levels 1729.4 Lux, Mimosa pudica leaves start to close. By the time the sun began to shine the light level the surface of the leaves, and the air temperature increases, the leaves of Mimosa pudica made the decision to seal the surface of the leaf, after 3 minutes the leaves will open again because there is no stimulus temperature and light. This research also analyzed the data with modeling RGB on the surface of the leaves to get the data chlorophyll Before the solar eclipse average picture chlorophyll on the leaf surface is 0.68149. By the time the sun shone on the condition of 3% on average 0.15494 prior to the occurrence of a total solar eclipse. On the condition of the leaves cover the average - average 0.29555, and after a solar eclipse passing and riding conditions and uneven irradiation, the average value of chlorophyll on the leaf surface is 0.54612

Tinggi Muka Air dan Bulk Density pada Tutupan Hutan dan Bekas Terbakar di Propinsi Kalimantan Tengah

Salah satu ciri gambut adalah rentan terbakar pada musim kemarau. Jika gambut terbakar maka akan sulit untuk dipadamkan karena material gambut terdiri dari bahan organik yang menjadi bahan bakar ketika kering. Kebakaran mengakibatkan perubahan sifat fisik tanah akibat hilangnya bahan organik tanah akibat panasnya api sehingga merusak struktur tanah, meningkatkan bulk density dan menurunkan porositas tanah. Peningkatan bulk density dapat mengakibatkan peningkatan tingkat kematangan gambut sehingga mempercepat penurunan permukaan tanah dan pelepasan CO2. Bulk density merupakan indikasi kepadatan tanah, semakin padat tanah maka semakin tinggi pula bulk density yang berarti semakin sulit air untuk melewatinya. Penelitian ini bertujuan untuk mengetahui persentase hari tergenang yang ditunjukkan dengan nilai tinggi muka air lebih dari 0 m dan bulk density pada berbagai tutupan lahan yaitu hutan dan lahan terbakar di Provinsi Kalimantan Tengah. Hasil penelitian menunjukkan bahwa nilai bulk density dipengaruhi oleh faktor tinggi muka air dan faktor kebakaran. Bulk density pada lokasi hutan KHDTK Tumbang Nusa sebesar 0,175 g cm-3 dengan persentase hari tergenang sebesar 0%, hutan Taman Nasional Sebangau mempunyai nilai bulk density sebesar 0,054 g cm-3 dengan persentase hari tergenang sebesar 14,30%, areal bekas terbakar bagian selatan mempunyai nilai bulk density sebesar 0,076 g cm-3 dengan persentase hari tergenang sebesar 0% dan bekas terbakar dari Taman Nasional Sebangau 0,082 g cm-3 dengan persentase hari tergenang sebesar 50,90%.

Effects of Liquid Organic and NPK Fertilizers on the Nutrient composition of Grass Jelly (Premna oblongifolia Merr) in Tropical Peat Soil

Peat soil is deficient in nutrients and agricultural development in this type of low in fertility soil is very difficult. Grass jelly (Premna oblongifolia) is a dark green shrub-like medicinal plant that has been widely used for its nutritional and medicinal properties. This study aimed to evaluate the effect of foliar application of organic fertilizers and NPK on the growth, nutrient absorption, and flavonoid content of grass jelly plants grown in peat soil. The study was carried out in a completely randomized factorial design with two factors including liquid organic fertilizer and NPK inorganic fertilizers.  Three doses of liquid organic fertilizer consisting of P0 (without liquid organic fertilizer), P1 (Agrobost), and P2 (Nasa), and three levels of NPK fertilizer consisting of N0 (0g NPK polybag-1), N1 (1 g NPK polybag-1), and N2 (2 g NPK polybag-1). The results of the study revealed a nonsignificant interaction between liquid organic fertilizer and NPK fertilizer in terms of leaf growth, leaf area, fresh weight, and flavonoid of grass jelly plant growth. Further, in the case of plant nutrient contents, combined application of Nasa liquid organic fertilizer and 2 g polybag-1 NPK fertilizer tends to increase the nutrient content of N, P, and K and have the highest impact as compared to other treatments. The results of the study can be concluded that administration of liquid organic fertilizer and NPK did not affect the plant growth characteristics of grass jelly plants while in the case of nutrient content except flavonoids the level of N, P, and K of plant leaves increased

EFFECT OF INDIVIDUAL AND COMBINED APPLICATION OF Trichoderma sp. AND VERMICOMPOST ON THE MANAGEMENT OF Sclerotium rolfsii AND GROWTH OF CHILLI UNDER PEATLANDS AGRO-CLIMATIC CONDITIONS

This study was conducted to evaluate the biocontrol potential of Trichoderma sp., and vermicompost on the management of Sclerotium rolfsii and chilli plant growth under peatlands agro-climatic conditions. The research was conducted under the laboratory as well field condition of Palangka Raya University in a completely randomized factorial design. As a treatment, four doses of Trichoderma sp. i.e. 0, 5, 10, and 15 g/box, and three doses of Vermicompost i.e. 0, 100, and 200g/ box was used individually and in combination and each treatment have three replications.  Three kilograms of sterilized peat soil planting media were placed in the 36 plastic boxes and Trichoderma sp., and vermicompost was applied 1 week before the chilli seeds are planted. After 10 weeks of plantations, observations related to the disease intensity and chilli growth and yield were recorded. The results of the study revealed a synergistic effect of Trichoderma sp. and vermicompost combination in controlling the stem rot disease caused by S. rolfsii. Individual and combined application of Trichoderma and vermicompost had an effective range of 73.33-100% over the control. Further, among the various tested treatments, a combination of Trichoderma sp @ 5g/box with vermicompost @ 200g/box and individual application of Trichoderma sp @ 10g/box were found superior in the management of stem rot disease. In the case of chilli growth parameters, the results of the study suggested that the application of vermicompost had a significant effect on the chilli plant's growth and yield, while the application of Trichoderma sp. significantly affects the chilli plants number of leaves

Effects of forest conversion to oil palm plantation on soil erosion and surface runoff

The vegetation type and its coverage in forest ecosystems are crucial in soil erosion and surface runoff. Cover crops provide significant protection to the soil aggregates, preventing damage caused by rainfall and runoff that might occur in the absence of these crops. However, changes in land use, such as converting forests into oil palm plantations, have resulted in changes to the land cover, which affect erosion, surface runoff, and, ultimately, the forest ecology of the watershed. This study aimed to provide an overview of erosion and runoff in forest areas and oil palm plantations. This field research was conducted to study erosion, runoff, and nutrient loss using plots measuring 15m x 25m, including oil palm plantation areas and forest areas. After each rain, sediment weighing and runoff volume measurements were carried out. Laboratory analysis was conducted for sediment and surface runoff water samples’ N, P, and K elements. The study results showed that five-year-old oil palm plantation areas experience the highest levels of erosion and runoff, followed by three-year-old oil palm plantation and forest areas. Nutrients were found to be lost in sediment across all land cover types, with a minimal amount recorded in surface runoff