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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Tanah dan Iklim
Putri Tunjung Sari
Universitas Jember
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Pengaruh Aplikasi Senyawa Humat dan Pupuk Kandang Ayam terhadap Pertumbuhan Bibit Tanaman Ubi Jalar (Ipomoea batatas L.) Putri Tunjung Sari; Ach. Fauzan Mas'udi; Josi Ali Arifandi
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 44, No 1 (2020)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v44n1.2020.71-79

Abstract

Abstrak. Proses pembibitan ubijalar haruslah didukung dengan ketersediaan hara yang cukup agar mampu meningkatkan produksi bibit yang berkualitas. Penambahan pupuk kandang ayam dan senyawa humat mampu meningkatkan kesuburan tanah. Penelitian ini bertujuan mengetahui pengaruh aplikasi pupuk kandang ayam dan senyawa humat terhadap jumlah bibit ubi jalar dan kesuburan tanah. Penelitian dilakukan menggunakan Rancangan Acak Kelompok Faktorial dengan dua faktor yaitu faktor pupuk kandang ayam dan faktor senyawa humat. Variabel pengamatan meliputi variabel kuantitas bibit dan variabel kesuburan tanah. Variabel kuantitas bibit adalah jumlah cabang dan jumlah bibit stek yang dihasilkan sedangkan variabel kesuburan tanah meliputi C-organik, N-total, P-tersedia dan K tersedia. Hasil penelitian menunjukkan kombinasi pupuk kandang ayam dan senyawa humat berpengaruh terhadap peningkatan jumlah cabang, jumlah bibit stek yang dihasilkan, N-Total, P-tersedia dan K-tersedia yang terdapat di dalam tanah. Pemberian faktor tunggal pupuk kandang berpengaruh terhadap peningkatan C-organik tanah. Kombinasi terbaik dalam meningkatkan kualitas bibit dan kesuburan tanah yaitu A2P3 (senyawa humat 200 ml dan pupuk kandang ayam 60 gram/tanaman/5 kg tanah). Abstract. The sweet potato seedling process must be supported by the availability of sufficient nutrients to increase the number of quality seed. The addition of manure and humic substance can increase soil fertility. This study aims to determine the effect of manure and humic substance applications on the quantity of sweet potato seeds and quality of soil fertility. The study was conducted using a factorial randomized block design with two factors: manure and humic substance. The observation variables included seed quantity  and soil fertility. Seed quantity variable is the number of branches and number of cuttings produced while soil fertility variables include organic-C, total-N, available-P, and available- K. The results showed that the combination of manure and humic substance increased  the number of branches, the number of cuttings produced, total- N, available-P, and available-K contained in the soil. A single factor of manure influences increase  soil organic-C. The best combination for improving seed quality and soil fertility is A2P3 (200 ml humic substance and 60-gram manure/plant/5 kg of soil).
Soil Quality Index Mapping Using GIS and Sentinel-2 Image in Jember, East Java Putri Tunjung Sari; Indarto Indarto; Marga Mandala
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 3 (2022): November 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1600.938 KB) | DOI: 10.14710/presipitasi.v19i3.566-577

Abstract

Soil is a solid mineral and organic matter from weathering rocks over the years. The current condition shows many productive lands that are of low quality. Soil quality must be a top priority in land management efforts to support the sustainability of ecology. This study proposes to soil quality index (SQI) assessment of paddy fields in Jember Regency, Indonesia, using the principal component analysis (PCA) method based on spatial data. The research procedure consists of (1) making land units, (2) soil sampling, (3) laboratory analysis, (4) principal component analysis (PCA), (5) assessment of soil quality index (SQI), and (6) Thiessen polygon analysis. The correlation results show the average correlation value < 0.5 (not significant). The soil quality is determined by three main components: total P, silt fraction, and clay fraction. The results of the soil quality analysis showed that 68,888 Ha was in the very low-quality category, and 39,948 Ha was in the low-quality category. Meanwhile, paddy fields included in the medium category are only 3,513 Ha. The addition of organic matter can improve the quality of paddy fields.
Co-Authors Ach. Fauzan Mas&#039;udi indarto indarto Josi Ali Arifandi Mandala, Marga