Agricultural waste can be converted onto useful materials like compost or organic fertilizers. In a simply practice, those wastes were kept and mixed with additional composting materials to enrich the fertilizer nutrients and compositions. Generally, plants can growth optimally in sufficient media, that is soil. It requires adequate micro and macro nutrients like phosphorus (P). in order to determine P content and other nutrient properties, many methods have been widely used from which most of them are wet chemical analysis. The main aim of this present study is to employ the near infrared reflectance (NIRS) technique in determining P content of organic fertilizer. Spectra data were generated in wavenumbers 5000 – 10 000 cm−1 and the model were established using principal component regression (PCR) method. The results showed that P content of compost materials can be determined using NIRS with maximum correlation coefficient 0.99 and robustness index 4.14 respectively.
This present study aimed to design and apply an automated irrigation system powered by solar panels for melon farming cultivation. It related to precision agriculture practices from which benefited as an environmental friendly approach. This study was performed by designing irrigation systems, constructing solar panels as a power source for generating pump used to irrigate melon orchard. The results showed that those combinations setup were benefited to reduce manual irrigation system which is normally conducted by human efforts. Further, it also acted as an environmental friendly practice since the system is attempted to utilize solar energy as main power source for irrigation pump. Based on obtained results, it may conclude that abundance energy in our earth can be used for precision agriculture practices with the aim to reduce environmental pollution and waste.
Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar dan sikap siswa serta hubungan sikap siswa dan hasil belajar siswa dengan penerapan pendidikan karakter peduli lingkungan melalui metode inkuiri pada materi pencemaran dan kerusakan lingkungan di SMP Negeri 6 Banda Aceh. Metode yang digunakan adalah eksperimen dengan jumlah sampel 25 siswa, untuk mengetahui aspek pemahaman (kognitif) menggunakan Ngain dan uji t, sedangkan untuk mengetahui hubungan antara pemahaman dan sikap, serta sikap dan perilaku digunakan uji korelasi Product Moment pada taraf nyata= 0,05. Hasil penelitian pada kelas eksperimen diketahui bahwa pada aspek kemampuan kognitif siswa (nilai) dalam pemahaman konsep terjadi peningkatan Korelasi pemahaman dan sikap siswa memiliki hubungan yang cukup. Korelasi sikap dan perilaku memiliki hubungan yang sangat kuat. Kesimpulan dari penelitian ini adalah penerapan pendidikan karakter peduli lingkungan dengan menggunakan metode inkuiri dapat meningkatkan pemahaman dan menyebabkan perubahan sikap dan perilaku siswa sehingga menjadi sadar dan peduli lingkungan pada konsep pencemaran dan kerusakan lingkungan di SMP Negeri 6 Banda Aceh. Kata Kunci: Pendidikan Karakter, Metode Inkuiri, Sikap dan Perilaku This study aims at determining the increase of students’ learning outcomes and attitudes, and also the relations between students’ attitudes and students’ learning outcomes after implementating environmental care character education through inquiry method in the concept of pollution and environmental damage at SMPN 6 Banda Aceh. This study used experimental method with the sample of 25 students. The improvement analysis was using N-gain and t-test, To determine the relationship between understanding and attitudes, and the attitudes and behavior of the students, the researcher analyzed the data by using product moment correlation on the level of significant 0.05. The results obtained by the experimental class students noted that the aspect of cognitive ability of students (grades) in understanding the concept was increased. The correlation between understanding and attitudes of the students have enough relationship. Meanwhile, the correlation between attitudes and behaviors have a very strong relationship. The conclusion of this research were the implementation of environmental care character education through inquiry methods can improve the understanding of students toward the concept and lead to changes in attitudes and behavior. Students become aware of and concerned about the environment in the concept of pollution and environmental damage. Keywords: Character Education; Inquiry Method; Student Attitudes; Behavior
Abstrak: Pengolahan tanah dengan menggunakan traktor roda dua dapat memberikan efek pemadatan tanah dan salah satu metode yang dilakukan untuk menguragi pemadatan tanah tersebut yaitu dengan melakukan pemberian pupuk organik pada tanah. Tujuan penelitian ini adalah untuk mengetahui perubahan beberapa sifat fisika - mekanika dan kinerja traktor roda dua akibat pemberian pupuk organik dan kedalaman pengolahan tanah ordo entisols. Metode penelitian yang digunakan adalah eksperimental design yang ditata dalam bentuk rancangan petak terpisah (split plot design), menggunakan dua faktor (petak utama dan anak petak). Kedua faktor tersebut adalah kedalaman pengolahan tanah (10 cm dan 20 cm) sebagai petak utama dan pupuk organik (0 ton/ha, 10 ton/ha dan 20 ton/ha) sebagai anak petak. Total kombinasi perlakuan adalah 6 plot percobaan dengan 3 kali ulangan, sehingga seluruhnya berjumlah 18 plot percobaan. Hasil penelitian menunjukkan bahwa pemberian pupuk organik dengan dosis 10 dan 20 ton /ha memberikan pengaruh nyata terhadap permeabilitas, pF 2,0 – 2,54 sedangkan pada bobot isi, porositas, stabilitas agregat dan tahanan penetrasi tanah tidak berpengaruh nyata. Kedalaman pengolahan tanah memberikan pengaruh yang sangat nyata terhadap bobot isi, porositas, permeabilitas, pF 2,0 – 2,54 dan stabilitas agregat namun tidak berpengaruh nyata terhadap tahanan penetrasi tanah. Perlakuan dengan pemberian pupuk organik dan kedalaman pengolahan tanah memiliki hubungan yang sangat kuat terhadap bobot isi, porositas total, permeabilitas, distribusi pori, indeks stabilitas agregat dan tahanan penetrasi tanah, perlakuan kedalaman pengolahan tanah juga memiliki hubungan yang kuat terhadap kinerja traktor roda dua.Analysis of Some Physical Properties - Mechanics and Two-Wheel Tractor Performance Due Given Organic Fertilizers and the Depth of Soil Processing of Entisols OrderAbstract: Tillage by using the two-wheeled tractor can give the effect of soil compaction and the method that is done to the soil compaction reduces by giving organic fertilizer to the soil. The purpose of this research was to determine changes in some physical-mechanical properties and the performance of two-wheeled tractor due given organic fertilizers and the depth of processing of entisols. The method used in this research is an experimental design arranged in a split plot design, using two-factors (main plots and subplots). The two factors of the depth of tillage (10 cm and 20 cm) as the main plots and organic fertilizer (0 tons / ha, 10 tons / ha and 20 tons / ha) as subplots. Total treatment combination was 6 experiment plots repeated 3 times, the total amounted to 18 experimental plots.The results showed that by giving of organic fertilizers with doses of 10 and 20 tons / ha gave a real effect on permeability, pF 2.0 - 2.54 while in bulk density, porosity, aggregate stability and soil penetration resistance were not significantly affected. The depth of soil processing provide a significant effect on the weight of the contents,porosity, permeability, pF 2.0 to 2.54 and aggregate stability but did not significantly affect the soil penetration resistance.The treatment by giving organic fertilizer and the depth of soil processing has a very strong relationship to the content weight, total porosity, permeability, pore distribution, index of aggregate stability and soil penetration resistance,depth of tillage treatments also have a strong relationship to the performance of two-wheeled tractors.
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