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All Journal Agrikultura Journal of Tropical Soils Jurnal Sains dan Teknologi Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Agroekoteknologi Tropika Lembab Community Empowerment Prosiding Konferensi Nasional PKM-CSR Agroindustrial Journal Journal of Applied Agricultural Science and Technology Indonesian Journal of Community Empowerment
Ganjar Herdiansyah, Ganjar
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Journal : Journal of Tropical Soils

 1 
Assessment of Andisol characteristics for the development of potato crops in Pangalengan Herdiansyah, Ganjar; Arifin, Mahfud; Suriadikusumah, Abraham; Herawati, Aktavia
JOURNAL OF TROPICAL SOILS Vol 30, No 1: January 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i1.45-52

Abstract

Pangalengan is a horticultural crop center area in Bandung Regency. The soil in this area consist of Andisol, which is developed from volcanic ash. One of the primary commodities in this area is potatoes. Intensive farming in Pangalengan is a problem that has an impact on soil and environmental conditions, thereby disrupting crop productivity. The research aimed to assess the characteristics of Andisols for the development of potato crop in Pangalengan. This research used qualitative, descriptive, and survey methods. The survey based on physiographic methods. Soil samples were taken purposively. The observations consisted of soil characteristics, erosion, soil fertility and land suitability. The research results show that the soil type is Typic Hapludans. Erosion is moderate (19.06-94.41 tons/ha/year) in SMU 1 and 2, high (311.22 tons/ha/year) in SMU 3 and very high (798.04 tons/ha/year) in SMU 4, soil fertility is low with land suitability for potato crop including marginally suitable (S3) and not suitable (N). Fertilization, especially P fertilizer and organic fertilizer as well as making bunds in the direction of the contour, are recommended for the development of potato crops in Pangalengan.
The Effect of Trichoderma on N, P, K Soil and Corn Plants Syamsiyah, Jauhari; Hartati, Sri; Herdiansyah, Ganjar; Maro'ah, Siti; Nurrahma, Rizkia Aufa
JOURNAL OF TROPICAL SOILS Vol 29, No 3: September 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i3.159-166

Abstract

The use of Trichoderma is one effort to manage healthy and environmentally friendly plants. This fertilizer is part of organic fertilizer; which farmers do not widely practice yet. This fertilizer has an impact that can increase nutrients and soil fertility. This study examined the impact of using Trichoderma in combination with NPK fertilizer on soil nutrient, nutrient uptake, and growth of corn plants. A Completely Randomized Block Design consisting nine treatments with three replicates was applied. The treatments were Control (A), standard NPK (Urea 350 kg ha-1, SP-36 200kg ha-1 and KCl 75kg ha-1) (B), ¼ NPK + 5 kg ha-1 Trichoderma (C), ½ NPK + 5 kg ha-1 Trichoderma (D), ¾ NPK + 5 kg ha-1 Trichoderma (E), 1 NPK + 5 kg ha-1 Trichoderma (F), ¾ NPK +1.25 kg ha-1 Trichoderma (G), ¾ NPK +2.5 kg ha-1 Trichoderma (H), ¾ NPK + 3.75 kg ha-1 Trichoderma (I). The results showed that NPK fertilizer accompanied by Trichoderma increased soil total N by 84.21%, available P by 36.25%, and available K by 142.22%. The same treatment also increased corn plants’ N, P, and K nutrients by 52.71%, 106%, and 61.53%. The growth of maize plants from applyingTrichoderma up to 5 kg ha-1 has not reduced the use of NPK fertilizer yet. However, applying Trichoderma could improve soil fertility.
Assessment of Land Characteristics and Suitability for Citrus Development in Dry Land Punung, Pacitan Regency Supriyadi, Supriyadi; Rahayu, Rahayu; Herdiansyah, Ganjar; Herawati, Aktavia; Novianti, Dita Risky
JOURNAL OF TROPICAL SOILS Vol. 29 No. 2: May 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i2.67-77

Abstract

One of the Indonesian provinces where the agricultural industry drives the economy is Punung, Pacitan, which has local conditions that are particularly suitable for producing citrus, giving this product the potential to continue to expand in popularity. Land evaluation tries to provide information on its potential for a particular purpose. This research was conducted to know land suitability classes, limiting factors, and improvement efforts that can be made. This research is exploratory descriptive with a variable approach through field survey and using a purposive random sampling method based on Land Mapping Units. Data analysis was carried out using the matching method between land characteristics and conditions for growing citrus, a statistical test by ANOVA (Analysis of Variance), and Duncan’s Multiple Range Test (DMRT) to find the factors that most determine land characteristics in Punung. The study results show that the actual land suitability class in Punung is marginally suitable. Improvements that can be made to increase the availability of nutrients in the soil in the form of available P2O5 with a low level of management is to apply P fertilization according to the needs of citrus. ANOVA results proved that the variety of soil types significantly influences some of the land characteristics.
The Effect of Trichoderma on N, P, K Soil and Corn Plants Syamsiyah, Jauhari; Hartati, Sri; Herdiansyah, Ganjar; Maro'ah, Siti; Nurrahma, Rizkia Aufa
JOURNAL OF TROPICAL SOILS Vol. 29 No. 3: September 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i3.159-166

Abstract

The use of Trichoderma is one effort to manage healthy and environmentally friendly plants. This fertilizer is part of organic fertilizer; which farmers do not widely practice yet. This fertilizer has an impact that can increase nutrients and soil fertility. This study examined the impact of using Trichoderma in combination with NPK fertilizer on soil nutrient, nutrient uptake, and growth of corn plants. A Completely Randomized Block Design consisting nine treatments with three replicates was applied. The treatments were Control (A), standard NPK (Urea 350 kg ha-1, SP-36 200kg ha-1 and KCl 75kg ha-1) (B), ¼ NPK + 5 kg ha-1 Trichoderma (C), ½ NPK + 5 kg ha-1 Trichoderma (D), ¾ NPK + 5 kg ha-1 Trichoderma (E), 1 NPK + 5 kg ha-1 Trichoderma (F), ¾ NPK +1.25 kg ha-1 Trichoderma (G), ¾ NPK +2.5 kg ha-1 Trichoderma (H), ¾ NPK + 3.75 kg ha-1 Trichoderma (I). The results showed that NPK fertilizer accompanied by Trichoderma increased soil total N by 84.21%, available P by 36.25%, and available K by 142.22%. The same treatment also increased corn plants’ N, P, and K nutrients by 52.71%, 106%, and 61.53%. The growth of maize plants from applyingTrichoderma up to 5 kg ha-1 has not reduced the use of NPK fertilizer yet. However, applying Trichoderma could improve soil fertility.
Assessment of Andisol characteristics for the development of potato crops in Pangalengan Herdiansyah, Ganjar; Arifin, Mahfud; Suriadikusumah, Abraham; Herawati, Aktavia
JOURNAL OF TROPICAL SOILS Vol. 30 No. 1: January 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i1.45-52

Abstract

Pangalengan is a horticultural crop center area in Bandung Regency. The soil in this area consist of Andisol, which is developed from volcanic ash. One of the primary commodities in this area is potatoes. Intensive farming in Pangalengan is a problem that has an impact on soil and environmental conditions, thereby disrupting crop productivity. The research aimed to assess the characteristics of Andisols for the development of potato crop in Pangalengan. This research used qualitative, descriptive, and survey methods. The survey based on physiographic methods. Soil samples were taken purposively. The observations consisted of soil characteristics, erosion, soil fertility and land suitability. The research results show that the soil type is Typic Hapludans. Erosion is moderate (19.06-94.41 tons/ha/year) in SMU 1 and 2, high (311.22 tons/ha/year) in SMU 3 and very high (798.04 tons/ha/year) in SMU 4, soil fertility is low with land suitability for potato crop including marginally suitable (S3) and not suitable (N). Fertilization, especially P fertilizer and organic fertilizer as well as making bunds in the direction of the contour, are recommended for the development of potato crops in Pangalengan.
Co-Authors Abraham Suriadikusumah AKTAVIA HERAWATI Anariyah, Ananda Sofiatun Anggita, Akas Anik Lestari Anjani, Nisya Ari Arifida, Sa’adillah Daud Siliwangi Saribun Essla, Verona Putri Febriyanti, Rina Fitriana, Ummi Nur Handoyo, Gani Cahyo Hardian, Tiara Hariyanto, Yasmin Zulfa Agustin Alfiyah Hasanah, Khalyfah Hery Widijanto Irmawati, Viviana Istiqomah, Nanda Mei Jauhari Syamsiyah Mahfud Arifin Maro'ah, Siti Maro’ah, Siti Mujiyo Mujiyo Mujiyo Novianti, Dita Risky Nugroho, Diki Nurrahma, Rizkia Aufa Pramesti Rajati, AnandayuGaluh Putranto, Gofar Faza Haryo Rachmat Harryanto Rahayu Rahayu Respati, Adam Arinto Ridha Hudaya Rija Sudirja Romadhon, Muhammad Rizky Sari, Suratna Sitanggang, Indra Gamaliel Sri Hartati Sumani . Suntoro Suntoro Supriyadi Supriyadi Sutarno Sutarno Widhiyastuti, Alfia Nisa Widyatmani Sih Dewi