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Komariah Komariah

Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret

Author-ID : 3764376

Agriculture, Biological Sciences & Forestry

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Metode USLE untuk Memprediksi Erosi Tanah dan Nilai Toleransi Erosi Sebuah Sistem Agricultural di Desa Genengan Kecamatan Jumantono Karanganyar Komariah Komariah; Jaka Suyana
Agrosains : Jurnal Penelitian Agronomi Vol 17, No 2 (2015): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Erosion can potentially cause of land degradation. Prediction of erosion rate is needed on a certain plots of land so the sustainability of the farming system and appropriate conservation recommendations can be known. This research is intended to obtain information of erosivity value comparison in supporting erosion prediction acuracy USLE method to get erosion prediction value and erosion tolerated value (Etol). This information will be used to the determine the recommendations technology conservation on farming system of Genengan village, district Jumantono, Karanganyar Regency. A explorative descriptive research is using a land units map as the basic unit of analysis a survey in the field. The determination of sample unit is based on the land unit map from the overlay of land slope maps, land use maps, and soil maps on the land system Samin watershed. Results showed that the magnitude in Genengan Village on the land unit 1, land unit 2, land unit 5, land unit 6 and land unit 8 still under the tolerance value. Meanwhile land unit 3, land unit 4 and land unit 7 are exceeded the value this requires need for conservation. The suggested conservation is for the land unit 3 by planting 9 of vetiver between the main plant, where as on the land unit 4 and land unit 7 is recomended to apply 60% of straw mulch.

Implementasi Sekolah Lapang Iklim dan Dosis Pupuk Terhadap Karakter Kimia Tanah dan Hasil Jagung Rifqi Ramadhani; Komariah Komariah; Sumani Sumani; Dwi Priyo Ariyanto
Agrosains : Jurnal Penelitian Agronomi Vol 20, No 2 (2018): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Indonesian Agency for Meteorology Climatology and Geophysics Agency (BMKG) stated that the implementation of CFS program can increase the production significantly up to 30% (BMKG 2016). This research was conducted to know the influence of climate field school (CFS) and fertilizer dosage on soil chemical properties and corn yield. The study was conducted with a nested experimental design with two factors. Factor A has two levels: CFS Program (S1) and nonCFS (S2) and factor B was fertilizer dose. Factor B is nested on factor A as A (B). The fertilizer dose factor consists of 6 levels; T0 (without fertilizer); T1 (100% organic fertilizer); T2 (75% organic + 25% inorganic fertilizer); T3 (50% organic + 50% inorganic fertilizer), T4 (25% organic + 75% inorganic fertilizer), T5 (100% inorganic fertilizer). The results showed that CFS program increased available P, available K and soil pH, while fertilizer dose (50% organic fertilizer + 50% inorganic fertilizer) on CFS program yielded the highest soil organic matter (4.12%). CFS and fertilizer dose both did not affect the yield of maize significantly. However, the average yield of maize on CFS land is greater (6.50 tonha-1) compared to nonCFS (5.38 tonha-1). The treatment with 100% inorganic fertilizers) on CFS program gives highest yield (8.75 tonha-1).

Alih Fungsi Lahan dan Curah Hujan terhadap Perubahan Hidrologi Sub Das Samin Nining Rahayu; Sutarno Sutarno; Komariah Komariah
Agrotechnology Research Journal Vol 1, No 1 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Samin sub-watershed is located in the district of Karanganyar and Sukoharjo regency. Every year an increasing number of people in Samin sub-watershed can inflict problems such as the seizure of land use and the amount of available water resources. This study purpose to analyzed the influence of land conversion and rainfall to hydrology conditions Samin sub-watershed in 2005-2015. This research used descriptive exploration method. The study population was the whole unit of land use in the Samin sub-watershed. Data collection techniques used collection of secondary data from BPS Karanganyar-Sukoharjo regency and watering hall. Data were analyzed using correlation analysis of land use and rainfall on hydrology conditions Samin sub-watershed. The results showed that the wetland and forest land decreased by an average of 44,76 ha-1year and 102,5 ha-1year. Residential land, fields and plantations increased by an average of 26,8ha-1year, 54,07ha-1year and 26,82ha-1year. In period 2005-2010 and 2011-2015, Samin sub-watershed has declined average on annual charge (-3.117,42 m3/second), value of coefficient run-off (-0,11), sedimentation (-0,01 mm) and increase average on value of coefficient of river regime (+91,02) and CVcharge (+0,35). Results of statistical analysis of correlation showed that, decline in wetland, forest and increased fields affect the increase coefficient of river regime. Decreased forest land also increased of fields land and plantations affect the increase of Coefficients of Variants (CVcharge). Decreased forest land affects decreased run-off coefficient, sedimentation and annual discharge.

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