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Caraka Tani: Journal of Sustainable Agriculture
Published by Universitas Sebelas Maret
ISSN : 26139456     EISSN : 25992570     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Caraka Tani: Journal of Sustainable Agriculture publishes original articles, review articles, case studies and short communications on the fundamentals, applications and management of Sustainable Agriculture areas in collaboration with Indonesian Agrotechnology / Agroecotechnology Association (PAGI), Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network), and Indonesian Agricultural Higher Education Communication Forum (FKPTPI). This journal has two issues in a year and it will be published in April and October.
Arjuna Subject : -
Articles 15 Documents
 1   2 
Search results for , issue "Vol 35, No 1 (2020): April" : 15 Documents clear
The Impacts of Climate-Induced Agricultural Drought on Four Cereal Crops: A Case Study in Bako Tibe District, Oromia National Regional State, Ethiopia Terefa Adunya; Fedhasa Chalchisa Benti
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.129 KB) | DOI: 10.20961/carakatani.v35i1.35749

Abstract

Increasing temperature and altered precipitation patterns lead to the extreme weather events such as drought and flood, which severely affects the agricultural production. This study was aimed to assess the impact of climate change-induced agricultural drought on four cereal crops in Bako Tibe District. Time-series climate and crop yield data, recorded from 1989 to 2018, were acquired from NASA’s data portal and Bako Research Institute. The changes in temperature and precipitation were analyzed using Mann Kendall trend test. The agricultural drought index was analyzed using R-software. The correlation between the selected yield crops and drought indices were evaluated using Pearson correlation coefficient. The results show that trends of seasonal and annual maximum and minimum temperatures were significantly increased (P<0.05). However, seasonal and annual precipitations were insignificantly decreased (P>0.05). Moderate to severe agricultural drought intensities happened four times in the last three decades. These drought spells spatially covered about 36% of the total area of the district. Crop yields and drought indices were significantly correlated at p-values; 0.0034, 0.043, 0.003 and 0.001 for teff, wheat, barley and maize, respectively. The coefficient of determination (R2) values of crop yields were 28.3%, 30.9%, 28.5% and 34.6% for teff, wheat, barley and maize, correspondingly. The study clearly suggests that the increase in temperature and decrease in precipitation enhanced the frequency and intensity of drought events and these impacted the selected crop yields during the past three decades. The map-based results could be used as guides for governmental and non-governmental organizations concerning on drought impact mitigation activities in the district by encouraging farmers to adopt appropriate agricultural technologies, drought tolerant crop varieties and small scale irrigation.
The Growth Performance of Oil Palm Seedlings in Pre-Nursery and Main Nursery Stages as a Response to the Substitution of NPK Compound Fertilizer and Organic Fertilizer Adileksana, Cahyo; Yudono, Prapto; Purwanto, Benito Heru; Wijoyo, Rachmanto Bambang
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.656 KB) | DOI: 10.20961/carakatani.v35i1.33884

Abstract

The need of nitrogen (N), phosphate (P) and potassium (K) nutrient in oil palm nursery are usually fulfilled with synthetic chemical fertilizers such as NPK fertilizer. The application of NPK fertilizer can cause the soil to become hard due to the accumulation of the residue left on the ground. Cow manure is able to substitute NPK fertilizer based on the chemical status of the soil. This study aimed at analyzing the effect of NPK fertilizer substitution with cow manure on the growth of oil palm seedlings in the pre-nurseries and main nurseries. The experiment was conducted from February to September 2018 in the Banguntapan research and experimental field, Faculty of Agriculture, Universitas Gadjah Mada. The experiment applied the Randomized Complete Block Design (RCBD) with one factor and six blocks as replications. The factors were subtitution using the replacement series method with five levels of doses, 100% NPK, 75% NPK + 25% cow manure, 50% NPK + 50% cow manure, 25% NPK + 75% cow manure and 100% cow manure. The observed parameter variables were root lenght, root area, hump diameter, leaf area, the number of leaves, plant height and plant dry matter. The use of 25% NPK substitute with 75% organic material was the best result in increasing the growth performance of oil palm seddlings in pre-nursery and main nursery.
Carbon Organic Content under Organic and Conventional Paddy Field and its Effect on Biological Activities (A Case Study in Pati Regency, Indonesia) Supriyadi, Supriyadi; Pratiwi, Melja Karni; Minardi, Slamet; Prastiyaningsih, Nanda Lintang
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.841 KB) | DOI: 10.20961/carakatani.v35i1.34630

Abstract

The low organic matter content of paddy soils impacts the declining quality of land. Without the efforts to enrich the soil organic matter (SOM) content, the productivity of paddy fields will decrease or the need for inorganic fertilizers will increase to reach the level of yield. The present research aims to determine the effect of differences in organic and conventional paddy fields management practices on soil organic carbon (SOC) content and biological activities. The research was conducted from July to September 2018 on organic and conventional paddy fields in Dukuhseti Sub-district, Pati Regency, Central Java, Indonesia. Sampling points were taken from six organic samples in the organic paddy fields while the other six samples were taken from conventional paddy fields. The variables observed in this research were organic C, pH, total N soil, total bacterial colonies, soil respiration and microbial biomass C. The results show that the organic C content in the organic paddy field (2.4%) was higher than that of the conventional paddy field (1.8%). The C content of organic paddy fields increased by 0.6%. The differences of the total bacterial colonies, soil respiration and microbial biomass C between organic paddy fields and conventional paddy fields were 11.5 CFU g-1, 7.42 mg CO2 week-1 and 0.51 µg g-1, respectively, because the use of organic farming systems could improve the biological nature of soils and caused biological activity in organic paddy fields to have the highest value compared to conventional paddy fields.
The Customer Satisfaction Analysis of Community based Agrotourism in Yogyakarta Indrayanti, Temy; Jamhari, Jamhari; Mulyo, Jangkung Handoyo; Masyhuri, Masyhuri
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v35i1.29336

Abstract

Several kinds of agro-tourism are managed by the community and by the private sector. However, if agro-tourism is managed by the community, can it give satisfaction to the visitors? This study aims to determine the level of customer satisfaction by Customer Satisfaction Index (CSI) and to investigate what marketing mix attributes should be improved by IPA-Kano integration analysis. The research method used was a quantitative research on community-based Salak (Salacca zalacca) Agro-tourism in each category of tourism village, namely ’growing’, ‘developing’ and ‘independent’ tourism village categories. The measurement of visitor satisfaction used the marketing mix attributes of 7Ps (price, place, product, promotion, process, people and physical evidence). Based on the results of CSI, the services provided by the community-based salak agro-tourism manager are considered ‘Satisfied’ in the Growing and Developing agro-tourisms and ‘Very Satisfied’ in the Independent agro-tourism. Priority attributes that should be improved are attributes included in the ‘Fatal’ category. Priority attributes in ‘growing’ agro-tourism are the marketing activities (publicity), availability and cleanliness toilet. Priority attributes in ‘developing’ agro-tourism are marketing activities (promotion), availability and cleanliness of toilets. Priority attributes in ‘independent’ agro-tourism are availability and cleanliness of toilets.
The Radical Scavenging Activity and Thermal Stability of Cinnamon Extract-Loaded Nanoparticles Dimas Rahadian Aji Muhammad; Joel Garcia Juvinal; Koen Dewettinck
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v35i1.37921

Abstract

The cinnamon extract-loaded nanoparticles with high phenolic content and antioxidant activity were successfully developed in a previous study. This study aimed to investigate the radical scavenging activity in 2.2-diphenyl-1-picrylhydrazyl system and stability of the nanoparticles under heat treatment. This study is important for directing the application of the nanoparticles in foods in the future. The thermal stability test was conducted using two different methods, which were the combination of relatively lower temperature (20-100°C) with a long time treatment (up to 120 hours) and the combination of relatively higher temperature (110-150°C) with a short time treatment (equal to or less than 2 hours). The results show that the cinnamon extract-loaded nanoparticles exhibited a radical scavenging activity. The higher proportion of cinnamon loading resulted in the higher radical scavenging activity of the nanoparticles. The thermal treatment caused a significant degradation on the phenolic content and antioxidant activity of the nanoparticles. The energy activation (Ea) of the phenolic content and antioxidant activity was found at 35.17 kJ mol-1 and 27.91 kJ mol-1, respectively. This study suggests that the cinnamon extract-loaded nanoparticles might be preferably incorporated into foods minimally involving heat exposure during their manufacture.

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