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All Journal Jurnal Agroteknologi
Darwis Darwis
Universitas Halu Oleo, Kendari, Indonesia
Agriculture, Biological Sciences & Forestry

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PENGARUH BIOCHAR TERHADAP BEBERAPA SIFAT KIMIA TANAH DAN PERTUMBUHAN TANAMAN NILAM (Pogostemon cablin Benth) PADA TANAH TAMBANG NIKEL Wa Ode Nurmahsita Mbay; Darwis Darwis; Resman Resman; Sahta Ginting; Hasbullah Syaf; Namriah Namriah
Jurnal Agroteknologi Vol 2 No 02 (2023): Jurnal Agroteknologi
Publisher : Program Studi Agroteknologi, Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v2i02.727

Abstract

The purpose of this study is to know the effect of application of rice husk biochar on changes in soil chemical properties and the growth of patchouli plants (Pogestemon cablin Benth). The research was conducted at Field Laboratory II, Faculty of Agriculture, Halu Oleo University in October-December 2022. This study used a Randomized Block Design (RBD) consisted of 6 treatments biochar, which are B0 = without biochar (control), B1 = 75 g polybag-1, B2 = Biochar 150 g polybag-1, B3 = 225 g polybag-1, B4 = 300 g polybag-1, B5 = 375 g polybag-1. The results showed that biochar increase soil pH from 5.76 to 6.57, CEC from 22.79 me 100 g-1 to 39.36 me 100 g-1, Available-P from 4.71 ppm to 13.04 ppm, Organic-C from 0.20% to 1.08%, and in constrast reduced Ni content from 776.10 ppm to 234.93 ppm, Fe from 6433.53 ppm to 3450.93 ppm. The application of rice husk charcoal affected significantly , the plant height, number of leaves and dry weight of plants. Biochar application up to 300 g polybag-1 (B4) is the most efficient dose to increase patchouli plant growth on nickel mine soil.Keywords: Biochar, ex- Nickel mining soil, Patchouli plant, soil chemical properties.
Analisis Indeks Kualitas Tanah pada Tipe Penggunaan Lahan Berbeda di Kecamatan Maginti Sri Jumiun; Darwis Darwis; Namriah Namriah; Sahta Ginting; Sitti Leomo; Zulfikar Zulfikar
Jurnal Agroteknologi Vol 3 No 01 (2024): Jurnal Agroteknologi
Publisher : Program Studi Agroteknologi, Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v3i01.564

Abstract

Soil quality is the ability of the soil to function to maintain plant productivity, maintain and maintain water availability and support human activities. The purpose of this study was to determine the Soil Quality Index (SQI) and determine the management direction for improving soil quality on different land uses in the Maginti sub-district. A field study and laboratory analysis were carried out from March to May 2022. The method used in this study was a free survey method through field observations conducted on 2 types of land use, namely irrigated rice fields and dry land. In irrigated rice fields, 3 sample points were taken and 3 sample points in dry land, then composited into 1 sample in order to represent the total amount of each land use. In calculating the value of the soil quality index using the formula by Bajracharya (2006) which has been modified by Ghimire (2018). The soil quality index is analyzed using the indicators that best represent soil functions. The variables observed included Texture, pH, C-Organic, N-Total, P-Available and K-Available. Soil quality index values range from 0-1, the higher the index value, the better the quality. The results of the analysis of the selected soil functions (minimum data set/MDS) and the MDS scoring were summed to determine the value of the soil quality index (SQI). The conclusion of this research is that the criteria for medium soil quality are irrigated rice fields with SQI (0,56) and dry land with low criteria with SQI (0,36). To improve soil quality in irrigated paddy fields and dry lands is to increase organic matter through the application of organic fertilizers with the right dosage according to the type and level of soil fertility.Keywords: Soil Quality Index, Irrigated Rice Fields, Non-Irrigation, Soil Management, Physical Properties of Soil Chemistry.
Analisis Neraca Air Lahan untuk Perencanaan Tanaman Padi Gogo dan Jagung pada Sub Das Wolasi Nur Fitria Sani; Darwis Darwis; Syamsu Alam; Rustam Rustam; Siti Leomo; Dedi Erawan
Jurnal Agroteknologi Vol 3 No 01 (2024): Jurnal Agroteknologi
Publisher : Program Studi Agroteknologi, Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v3i01.717

Abstract

Infomation climate data of a place plays an important role in the development of agriculture in the region. This can be used to find out about the relationship between plants and climate, estimates of planting time, harvest time, drought (water deficit), flooding (water surplus) can be made, and determining the types of plants used. In accordance. This study aims to determine the level of groundwater availability based on land water balance analysis in the Wolasi sub-watershed and to find out how to plan planting patterns of upland rice and corn according to groundwater availability in the Wolasi sub-watershed. This study uses monthly rainfall data for 10 years (2012-2021) and other climate data (air temperature) for 10 years (2012-20121). Calculation of land water balance using the Throntwaite-Mather method. The result of land water balance calculation under conditions of monthly average rainfall distribution of water availability in the Wolasi sub-watershed are classified as very adequate where a surplus occurs from January to July and December. While the water deficit occurs from August to October. At a 75% chance of rainfall, the distribution of water availability is classified as very adequate,where a surplus occurs from January to July and November to December and a water deficit occurs from July to October. In the Wolasi sub-watershed, the montly average rainfall for upland rice can be planted in January and the final harvest in April, while for corn, the initial planting can be done in May and the final harvest in July, upland rice and corn can be planted twice in a row. a year and can also be planted in intercropping. With a 75% chance of rainfall in the Wolasi sub-watershed, the initial planting of upland rice can be done in January and the final harvest in April, while corn plants can be intercropped, planting upland rice and corn can be done once a year.
Co-Authors Dedi Erawan Hasbullah Syaf Namriah Namriah Nur Fitria Sani Resman Resman Rustam Rustam Sahta Ginting Siti Leomo Sitti Leomo Sri Jumiun Syamsu Alam Wa Ode Nurmahsita Mbay Zulfikar Zulfikar