Ganjar Herdiansyah
Department of Soil Science, Faculty of Agriculture, Universitas Sebelas Maret, Surakarta

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Physical Properties of Alfisols, Growth and Products of Hybrid Corn Affected by Organic and Inorganic Fertilizer Jauhari Syamsiyah; Slamet Minardi; Ganjar Herdiansyah; Ongko Cahyono; Fegi Cahya Mentari
Caraka Tani: Journal of Sustainable Agriculture Vol 38, No 1 (2023): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v38i1.65014

Abstract

The nutrients of plants and the physical condition of the soil must both be considered to increase corn productivity. The continuous use of inorganic fertilizer without manures will cause a decrease in the physical properties of the soil. Therefore, this study aims to obtain doses of organic fertilizer from cow manure and inorganic fertilizers namely urea, KCl and SP-36 that will give the best effect on the physical properties of Alfisols, growth and yield of hybrid corn. The experiment was carried out using the randomized complete block design (RCBD) with two factors namely organic and inorganic fertilizers. Each factor was given at four dosages: 1, ¾, ½ and ¼ of the standard dose each with three replications. Observation parameters include bulk and particle density, soil porosity, aggregate stability, root volume and fresh weight, plant height, as well as the weight of corn with and without husks. The results showed that organic and inorganic fertilizers significantly affected bulk density, soil porosity, aggregate stability, root fresh weight, root volume, as well as the weight of corn with and without husks. Additionally, treatment with 7.5 to 10 tons of organic fertilizer as well as ¼, ¾ and 1 dose of inorganic fertilizers produced the best effect on soil physical properties of Alfisols, growth and yield of hybrid corn, while the lowest results were obtained in the control treatment. This indicates that organic treatment can reduce the use of inorganic fertilizers between ¼ to ¾ of the standard dose.
Utilization of Local Grass Cynodon dactylon for Football Field Rehabilitation and Minimizing the Incidence of Injuries Rahayu Rahayu; Mujiyo Mujiyo; Ganjar Herdiansyah; Aktavia Herawati; Sutarno Sutarno; Geun Mo Yang; Tiara Hardian; Nanda Mei Istiqomah; Viviana Irmawati; Muhammad Rizky Romadhon; Khalyfah Hasanah; Akas Anggita
AgriHealth: Journal of Agri-food, Nutrition and Public Health Vol 4, No 1 (2023): April
Publisher : Research and Development Center for Food, Nutrition and Public Health (P4GKM) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrihealth.v4i1.70492

Abstract

The problems faced are uneven football field surface, uneven grass growth, many pebbles and boulders, stagnant and muddy during the rainy season and fractures in the soil during the dry season which make the field not of a good standard for use and have an impact on the incidence of injuries to field users. This study aims to improve the quality of grass for football field using quality local grass Cynodon dactylon in order to overcome the problem of bad fields and avoid field’s users injury. The method is through field rehabilitation technology by improving the surface design and soil media profile as well as the use of quality local grass. The rehabilitation technology includes improving the surface of the field to improve drainage by designing a “geger sapi” shape. The assessment of the rehabilitation results used a qualitative approach with a questionnaire survey to the local community of field users. The results of field grass rehabilitation make the quality of grass in the field after rehabilitation better growth by 45%, perception grass quality was very good by 43%, the surface of the field is flatter, no gravel and surface rocks are found so the flooded were not found by 83%. Field conditions with better grass quality also reduce the frequency of injuries incidents of player during competition about 61%. Hence, field grass rejuvenation benefits the environment and public health. This great benefit will increase the comfort and closeness between the local community.
Development of Organic Rice Cultivation through Dual System of Azolla microphylla in Gentungan, Mojogedang, Karanganyar, Indonesia Dwi Priyo Ariyanto; Aktavia Herawati; Jauhari Syamsiyah; Komariah Komariah; Ganjar Herdiansyah
PRIMA: Journal of Community Empowering and Services Vol 7, No 1 (2023): June (in Press)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prima.v7i1.74161

Abstract

The use of Azolla microphylla (Azolla) as organic fertilizer or green manure is not yet known by the Farmer Group (FG) of Tani Mulyo 1 and Tani Mulyo 5. Moreover, dual system of Azolla is applied to organic rice cultivation. The dual system of Azolla uses Azolla as a fertilizer and as a deterrent to the growth of weeds that interfere with rice plants. This partnership program aims to increase partners' knowledge about the dual system of Azolla and assistance and direct practice of Azolla application on cultivated organic paddy fields. The stages include socialization, counseling, mentoring, practice of Azolla application, and monitoring-evaluation. The results showed that the participants' knowledge about Azolla before the activity was 25% very not know, 45% not know, and 15% know enough. There was an increase in participants' understanding after the activity, 65% know and 25% very know or increased up to 100% compared to before the activity. The results of participant satisfaction showed that 65% of participants were satisfied and 10% are very satisfied with the activities carried out. As many as 70% of the partners stated that they would apply the dual system of Azolla in organic rice cultivation. The increasing understanding and awareness of partners will affect the development of organic rice cultivation.
Micro and Macronutrient Availability for Rice Growth on Sandy Soil with Application of Azolla microphylla and Poultry Manure Jauhari Syamsiyah; Aktavia Herawati; Ganjar Herdiansyah; Atika Sari Damayanti
AgriHealth: Journal of Agri-food, Nutrition and Public Health Vol 5, No 2 (2024): October
Publisher : Research and Development Center for Food, Nutrition and Public Health (P4GKM) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrihealth.v5i2.90857

Abstract

Sandy soil has various constraints, such as the low availability of N, P, and K nutrients. Organic matter should be applied to improve soil conditions. This study’s organic materials used as ameliorants included chicken manure and Azolla microphylla. This study aimed to determine the effect of A. microphylla and chicken manure on the availability of micro and macronutrients and rice growth in sandy soil. The research was conducted on the sandy soil of Samas Beach, Bantul, Yogyakarta. The study used a factorial complete randomized block design consisting of 2 factors. The 1st factor is the dose of Azolla (0 and 7.5 tons ha-1). The 2nd factor is the dose of chicken manure (50, 100, 150 tons ha-1). The results showed no interaction between the application of A. microphylla and chicken manure. The application of chicken manure increased NO3-, available P, and available K levels. The application of A. microphylla increased the height of rice plants. Azolla 7.5 tons ha-1 and chicken manure 150 tons ha-1 showed the highest values in NO3- (0.11 mg l-1), available P (6.74 ppm), and organic C (0.27%). Chicken manure of 150 tons ha-1 can increase the number of grains per panicle. These findings offer a potential strategy for addressing nutrient deficiencies in sandy soils and improving rice growth.