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Effect of Coffee Ages and Shade Types on Soil Moisture and Soil N, P, K Availability in UB Forest zenny faridatus sa'diyah; Sugeng Prijono; Retno Suntari; Zaenal Kusuma
JOURNAL OF TROPICAL SOILS Vol 28, No 2: May 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i2.39-45

Water and nutrients is important for plant which has its characteristics. This study has been carried out in the UB (Brawijaya University) forest about soil moisture content during rainy and dry seasons, Total-N, -P, -K from litter on different types of shade and age of coffee plants, and their effect on soil Available-N, -P, and -K. There are P1 (control), P2 (4-year-coffee + pine), P3 (7-year-coffee + pine), P4 (4-year-coffee + mahogany), and P5 (7-year-coffee + mahogany). These treatments affected to total soil moisture storage, Total-N, -P, -K of litter, and Available-N, -P, -K in the soil. The soil moisture storage change between rainy and dry seasons was 36.97 mm. The highest Total-N, -P, and -K of litter was 11.00 kg ha-1 y-1 at P3, 1.06 kg ha-1 y-1 at P2, and 4.35 kg ha-1 y-1 at P3, which was inconsistently associated with high soil nutrients. The highest Total-N was 0.40 (0-20 cm), 0.27 (20-40 cm), 0.30% (40-60 cm) at P4, Available-K was 1.69 (0-20 cm), 1.64 (20-40 cm), 1.87 cmol kg-1 (40-60 cm) at P5, and Available-P was 15.21 (0-20 cm), 14.06 (20-40 cm), 12.64 mg kg-1 (40-60 cm) at P1.

UPAYA PENINGKATAN SERAPAN UNSUR HARA DAN HASIL BAWANG MERAH DI INCEPTISOLS MALANG MELALUI OPTIMALISASI DOSIS PUPUK MAJEMUK Retno Suntari; Sekar Mariam Hapsari; Syahrul Kurniawan
Agrika Vol 17, No 1 (2023)
Publisher : Badan Penerbitan Universitas Widyagama Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31328/ja.v17i1.4574

ABSTRAKKabupaten Malang termasuk salah satu wilayah penghasil bawang merah terbesar di Jawa Timur pada tahun 2012-2019. Luas panen bawang merah di propinsi Jawa Timur pada tahun 2019 mencapai 42.962 hektar. Produksi bawang merah mengalami peningkatan, namun produktivitas bawang merah nasional masih tergolong rendah. Hal ini diduga akibat rendahnya kesuburan tanah maupun pemupukan yang kurang tepat. Upaya peningkatan produksi dapat dilakukan dengan aplikasi pupuk majemuk. Penelitian dilakukan di lahan percobaan Fakultas Pertanian Universitas Brawijaya di Kelurahan Jatimulyo, Kecamatan Lowokwaru Kota Malang. Penelitian dirancang menggunakan Rancangan Acak Kelompok (RAK) terdiri dari 8 perlakuan yaitu M0 (kontrol), M1 (100% pupuk dasar), M2 (50% pupuk majemuk), M3 (75% pupuk majemuk), M4 (100% pupuk majemuk), M5 (125% pupuk majemuk), M6 (150% pupuk majemuk) dan M7 (200% pupuk majemuk) dengan 3 kali ulangan. Hasil penelitian menunjukkan bahwa pupuk majemuk NPS (16:20:16) mempengaruhi pertumbuhan tanaman (panjang dan jumlah daun), produksi bawang merah (diameter umbi, bobot basah dan bobot kering umbi), dan serapan unsur hara tanaman. Pupuk majemuk NPS (50%-200%) tidak mempengaruhi pertumbuhan bawang merah, tetapi mempengaruhi produksi umbi bawang merah dan serapan N serta K. Pupuk majemuk NPS dosis 200% (setara 550 kg/ha) mampu meningkatkan produksi umbi bawang merah yang lebih banyak dibandingkan dengan dosis 50% dan 150% (setara 137,5 kg/ha dan 412,5 kg/ha). Pupuk majemuk NPS dosis 200% menurunkan pH tanah. ABSTRACTMalang Regency is one of the largest shallot producing regions in East Java in 2012-2019. The shallot harvested area in East Java province in 2019 reached 42,962 hectares. Shallot production has increased, but the national shallot productivity is still relatively low. This is thought to be due to low soil fertility and inappropriate fertilization. Efforts to increase production can be done with the application of compound fertilizers. The research was conducted in the experimental field of the Faculty of Agriculture, University of Brawijaya in Jatimulyo Village, Lowokwaru District, Malang City. The study was designed using a randomized block design (RBD) consisting of 8 treatments, namely M0 (control), M1 (100% basic fertilizer), M2 (50% compound fertilizer), M3 (75% compound fertilizer), M4 (100% compound fertilizer) , M5 (125% compound fertilizer), M6 (150% compound fertilizer) and M7 (200% compound fertilizer) with 3 replications. The results showed that NPS compound fertilizer (16:20:16) affected plant growth (length and number of leaves), onion production (tuber diameter, tuber fresh and dry weight), and plant nutrient uptake. NPS compound fertilizer (50%-200%) does not affect shallot growth, but affects shallot bulb production and N and K uptake. NPS compound fertilizer dose of 200% (equivalent to 550 kg/ha) can increase shallot bulb production which is more than the doses of 50% and 150% (equivalent to 137.5 kg/ha and 412.5 kg/ha). The NPS compound fertilizer at a dose of 200% lowers soil pH.

EFEK APLIKASI PUPUK KANDANG KAMBING DAN PUPUK N, P, K TERHADAP SIFAT KIMIA TANAH, SERAPAN P, PERTUMBUHAN DAN PRODUKSI SAWI HIJAU (Brassica juncea L.) DI KECAMATAN TULANGAN, KABUPATEN SIDOARJO Aisyah Hairani Aulia; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 10 No. 2 (2023)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2023.010.2.33

The high demand for mustard greens from consumers in Sidoarjo has forced farmers to increase their production. One of the efforts made is to provide excessive N, P, and K fertilizers. This study aimed to analyze the effect of the combined application of goat manure and N, P, K on growth, yield, P uptake, and soil chemical properties. Six treatments and three replications arranged in a randomized block design. The results showed that the combination of goat manure and N, P, K fertilizer had a significant effect (p<0.05) on plant height, number of leaves, plant fresh weight, total plant P, soil pH, soil organic C, soil total N, soil C/N ratio, and soil total P, but not significantly different (p>0.05) on plant dry weight, P absorption, and available P of the soil. The combination of goat manure and N, P, K fertilizer increased plant height from 36.4 cm to 50 cm (+37.4%), number of leaves from 18 to 43 leaves (+143.8%), fresh weight from 92 g to 310 g (+237%), dry weight from 10.8 g to 14.1 g (+30.6%), total crop P from 1.4% to 1.45% (+3.6%), P uptake from 15.1 g to 20.5 g (+35.2%), organic C from 0.97% to 1.25% (+28, 9%), total N from 0.35% to 0.42% (+20%), C/N ratio from 2.77 to 2.97 (+7.2%), total P from 18.9 mg 100 g-1 to 36.6 mg 100 g-1 (+26.6%), and available P from 4.22 ppm to 6.24 ppm (+49.9%).

PENGARUH APLIKASI KOMPOS CAMPURAN AMPAS KOPI DAN TEPUNG CANGKANG TELUR TERHADAP KADAR NITROGEN DAN KALSIUM TANAH REGOSOL SERTA PERTUMBUHAN DAN HASIL TANAMAN OKRA (Abelmoschus esculentus L.) Madyaratri, Raditya Luh; Suntari, Retno
Jurnal Tanah dan Sumberdaya Lahan Vol. 10 No. 2 (2023)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2023.010.2.13

One of the medicinal plants that are rarely cultivated in Indonesia is okra. This plant has a business opportunity that can bring benefits to farmers. This research aimed to elucidate the effect of a compost mixture of coffee grounds and milled eggshell on nitrogen and calcium contents in a regosol soil and growth and yield of okra plants. Fertilizer treatments tested were: P0 (control), P1 (100% inorganic), P2 (25% compost + 75% inorganic), P3 (50% compost + 50% inorganic ), P4 (75% compost + 25% inorganic), and P5 (100% compost). The results showed that the application of a compost mixture of coffee grounds and eggshell with a dose of 100% compost had a significant effect on increasing soil pH, total N, and Ca compared to control, namely 30,77%, 147,52%, and 643,54%, but did not significantly affect the organic C of the soil. The application of coffee grounds and milled eggshell compost with a dose of 100% significantly affected plant height at 8 WAP and plant stem diameter at 6 WAP. The application of coffee grounds and milled eggshell compost with a dose of 100% significantly increased fresh fruit weight and dry weight of okra plants, respectively 18.27% and 33.33% compared to the control.

Application of oil palm and cacao waste biochar to improve the chemical properties of an Ultisol of Langsa, Aceh Saputra, Iwan; Prijono, Sugeng; Soemarno, Soemarno; Suntari, Retno
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6637

Ultisols, including those of Langsa, Aceh, are known to have low fertility due to low pH, low available nutrients, low base saturation, high pH and exchangeable Al, and low cation exchange capacity. These problems can be alleviated by applying organic amendments to the soil. One of the soil amendments is biochar. This study aimed to elucidate the potential of oil palm and cacao waste biochar for improving the chemical properties of an Ultisol of Langsa, Aceh. Biochars generated from oil palm kernel shell (PKS), oil palm empty fruit bunch (PEFB), and cacao pod husk (CPH) were applied to the soil and incubated in the laboratory for 16 weeks. At 4, 8, 12, and 16 weeks after incubation, the changes in soil chemical properties were measured. The results showed that applying different types of biochar significantly improved the chemical properties of the Ultisol of Langsa. Specifically, PEFB biochar caused significant increases in soil pH (H2O and KCl), total phosphorus, available phosphorus, organic C, and cation exchange capacity. These increases became more pronounced with longer incubation times. In addition, using PEFB biochar resulted in the lowest levels of exchangeable Al and Fe in the soil. These levels decreased further with longer incubation times. In general, PEFB biochar produced at a pyrolysis temperature of 450oC for 4 hours is the most effective biochar for improving the chemical properties of the Ultisol of Langsa.

Effect of Coffee Ages and Shade Types on Soil Moisture and Soil N, P, K Availability in UB Forest sa'diyah, zenny faridatus; Prijono, Sugeng; Suntari, Retno; Kusuma, Zaenal
JOURNAL OF TROPICAL SOILS Vol. 28 No. 2: May 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i2.39-45

Water and nutrients is important for plant which has its characteristics. This study has been carried out in the UB (Brawijaya University) forest about soil moisture content during rainy and dry seasons, Total-N, -P, -K from litter on different types of shade and age of coffee plants, and their effect on soil Available-N, -P, and -K. There are P1 (control), P2 (4-year-coffee + pine), P3 (7-year-coffee + pine), P4 (4-year-coffee + mahogany), and P5 (7-year-coffee + mahogany). These treatments affected to total soil moisture storage, Total-N, -P, -K of litter, and Available-N, -P, -K in the soil. The soil moisture storage change between rainy and dry seasons was 36.97 mm. The highest Total-N, -P, and -K of litter was 11.00 kg ha-1 y-1 at P3, 1.06 kg ha-1 y-1 at P2, and 4.35 kg ha-1 y-1 at P3, which was inconsistently associated with high soil nutrients. The highest Total-N was 0.40 (0-20 cm), 0.27 (20-40 cm), 0.30% (40-60 cm) at P4, Available-K was 1.69 (0-20 cm), 1.64 (20-40 cm), 1.87 cmol kg-1 (40-60 cm) at P5, and Available-P was 15.21 (0-20 cm), 14.06 (20-40 cm), 12.64 mg kg-1 (40-60 cm) at P1.

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