Papers by Aktavia Herawati
IOP conference series. Earth and environmental science, Mar 1, 2024
Naukovì gorizonti, Jan 3, 2024
Jurnal Agrikultura/Jurnal Agribisnis dan Agrowisata : The Journal of Agribusiness and Agritourism/Jurnal Agribisnis dan Agrowisata, Dec 31, 2023
IOP Conference Series: Earth and Environmental Science
This study aims to determine the potential and limitations of land in Ngawi District, East Java, ... more This study aims to determine the potential and limitations of land in Ngawi District, East Java, Indonesia, for cultivating rice, corn, and soybeans. The research consists of a four-stage field study conducted in Ngawi Regency: (1) organization of land units; (2) determination of observation points through stratified proportional sampling for each land unit; (3) field surveys; and (4) laboratory analysis. The land evaluation was conducted in accordance with the FAO Guidelines for Land Evaluation for Rainfed Agriculture. The results of the research indicate that 46,417.7 ha (88.1%) of the land area is highly suitable (S1) for rice and 49,286.6 ha (72.1%) is marginally suitable (S3) for corn due to poor drainage. Approximately 62,499 ha (91.4% of the total land area) are marginally suitable (S3) for soybean cultivation. There were suggested five models of land management: (1) intensive rice farming; (2) a relay cropping system for rice-corn or rice-soybeans; (3) multiple cropping syst...
Soil and Environment
Nitrogen is an essential element, which can come from mineralization of organic N in plant residu... more Nitrogen is an essential element, which can come from mineralization of organic N in plant residues. The measurement of nitrogen mineralization is important for estimating nitrogen availability and determining fertilizer requirements. This study aims to evaluate N mineralization of straw and cow manure in organic paddy fields at different water conditions through laboratory incubation. Types of paddy field management (organic, semi-organic, and conventional), organic matter (straw and cow manure), and moisture conditions (aerobic and anaerobic) were used in these research. The NH4+ and NO3ˉ concentration, soil pH, and water content were measured eight times over 56 days of incubation. Microbial biomass was measured at the end of the incubation. The data were analyzed using three-way ANOVA followed by the DMR and Pearson correlation test. Results showed that the application of cow manure on organic paddy fields in anaerobic conditions increased NH4+ up to 18.56 mg kg-1 and increased ...
Roczniki Gleboznawcze, Nov 16, 2023
The south eastern region of Pacitan Regency, East Java, Indonesia, is directly facing opposite th... more The south eastern region of Pacitan Regency, East Java, Indonesia, is directly facing opposite the direction of the Indo-Australian plate movement, and has a diverse geological structure with different rocks occurring on land surface. This research aims to determine the infl uence of geological formations on soil characteristics and quality and the limiting factors of soil quality. Soil samples were taken from 40 sampling points from 10 geological formations from the topsoil (tillage layer) at a 0-30 cm depth. The number of sample points is adjusted to the area of the geological formation, where the wider the geological formation, the more samples are taken. Soil characteristics data were analysed using Anova test and Duncan test to get information on the infl uence of geological formations on soil characteristics. Pearson correlation test and principal component analysis (PCA) were used to calculate the soil quality index, and the Kruskal-Wallis test to analyse the infl uence of geological formations on soil quality. The result shows that the soil mineral composition is mostly inherited from andesitic-basaltic parent rocks which has experienced weathering. Geological formation has an infl uence on bulk density, soil water content, porosity, cation exchange capacity and soil organic carbon content. The soil quality index value for various geological formations is in the range of 0.31-0.39, so it is included in the low to medium class. Jaten Formation and the Watupatok Formation do not have limiting factor on soil quality, base saturation (BS) is a limiting factor in Oyo Formation, and soil organic carbon (SOC) and total nitrogen (TN) are limiting factors in almost all geological formations..In conclusion, geological formations signifi cantly infl uence several soil characteristic parameters but are not the dominant factor determining soil quality.
IOP conference series, Feb 1, 2022
Biomass production supports humans need for food so needs to be supported by optimal soil conditi... more Biomass production supports humans need for food so needs to be supported by optimal soil conditions. The study related to the potential for soil degradation in land characteristics is the first step for sustainable agricultural control. Potential soil degradation is compiled from the number of scores for each land map unit (soil type, slope, rainfall, land use) using technical guidelines for the preparation of soil degradation, and the Pearson correlation test to examine the causal relationship of soil degradation from each land characteristic. The results show that the land with the highest potential is with moderate level potential of 4,671.83 hectares (46.44% area) and the other part of 3,953.13 hectares (39.30% area) has low potential level. The main factors for potential soil degradation are the slopes, rainfall, and land use. The steeper the slopes and the high rainfall carried out on intensive agricultural land, the greater the degradation to the soil. Suggested land management strategies include soil conservation with minimal tillage, mulch application, terrace construction, and planting parallel to the soil contour. In addition, erosion research needs to be carried out to determine in detail the magnitude of the erosion prediction in this area.
Journal of Tropical Soils, Jan 6, 2023
The higher national rice demand encourages various efforts to increase rice production. This incr... more The higher national rice demand encourages various efforts to increase rice production. This increase in rice production occurs in line with increasing public awareness of healthy foods, especially organic rice. Rice field management with an organic system is expected to provide a higher yield and quality of rice. This study aims to determine the effect of the long-time application of an organic rice management system on rice yield and quality. Descriptive exploratory research is supported by laboratory analysis of samples of organic rice plants with three periods (10 years, 7 years, and 4 years), semi-organic and conventional. The parameters observed were dry harvested grain, dry milled grain, the weight of 1000 grains, unfilled grain, protein content, amylum, amylopectin, and reducing sugar. The most prolonged organic rice field management with the application of 10 years gives better results with a protein content of 6.14%, amylum 71.71%, and amylopectin 49.35%. While the application of organic farming for 7 years gives the highest rice yield, the difference is not confirmed with the application of organic 10 years, with the weight of dry grain harvest 10.44 Mg ha-1 , dry milled grain 8.15 10.44 Mg ha-1 , the weight of 1000 grains 24 g, and unfilled grain 3.8%.
IOP conference series, Apr 1, 2023
Pacitan Regency is one of the potential areas for the development of cocoa (Theobroma cacao L). P... more Pacitan Regency is one of the potential areas for the development of cocoa (Theobroma cacao L). Plants need certain conditions to produce optimally. Land suitability is a way to find out whether land conditions in Kebonagung District are suitable or not for cocoa plants. This study evaluates land suitability for cocoa plants in Kebonagung District, Pacitan Regency. The research was conducted using descriptive method through a survey approach. Based on the overlay of soil type maps, topographic maps, rainfall maps, and administrative maps, ten land map units (LMU) were obtained. Morphological analysis and soil characteristics were carried out qualitatively in the field and quantitatively in the laboratory. Determination of land suitability is done by matching the characteristics of the land with the conditions for growing cocoa plants. The results showed that at LMU 2, 3, 4, 5, 6, 8, 9, and 10 were moderately suitable for the class of land suitability, while LMU 1 and 7 were marginally suitable. The limiting factors are the length of the dry month, humidity, pH, available potassium, base saturation (BS), erosion hazard and slope. After improving the limiting factor, the potential land suitability class was obtained in the S2 class (moderately suitable) for all LMUs.
IOP conference series, Apr 1, 2023
Journal of Agribusiness and Agritourism, Apr 29, 2022
IOP Conference Series: Earth and Environmental Science, 2022
Nawangan District has been hit by clove crop failures for years. Due to this incident, alternativ... more Nawangan District has been hit by clove crop failures for years. Due to this incident, alternative plant replacements are needed following the land conditions in the area. Coffee (Coffea sp.) is one of the relevant choices. Land evaluation needs to be done to determine the land suitability class. This study aims to determine the land suitability class of coffee plants in Nawangan District. The type of coffee used in this research is Coffea arabica and Coffea canephora. This study uses the matching method with the minimum law on each land unit. Based on data obtained from field surveys and laboratory analysis, the actual land suitability for the two types of coffee is S3 (marginal), with various limiting factors. Coffea arabica has a limiting factor: temperature, water availability, rooting condition, oxygen availability, nutrient retention, and nutrient availability. The limiting factors of Coffea canephora are rooting condition, oxygen availability, nutrient retention, and nutrient...
IOP Conference Series: Earth and Environmental Science, 2021
The existence of global warming, directly or indirectly, will have an impact on climate change wh... more The existence of global warming, directly or indirectly, will have an impact on climate change which will threaten the productivity of cocoa plantations. This study aims to (1) determine the correlation between rainfall, relative humidity, and temperature to cocoa productivity and (2) determine the correlation between land suitability and cocoa productivity in Tulakan District, Pacitan Regency. The method used in this research was a descriptive exploratory method with a purposive sampling technique of collecting soil samples on land map units that have been determined based on various map overlays. There are five land map units (LMU) with a total area of 2.624 Ha with each LMU repeated three times. Regression correlation analysis was conducted to determine the relationship between rainfall and relative humidity on land suitability and cocoa productivity. The analysis showed that there was a negative correlation between rainfall and cocoa productivity (r = - 0.892, p <0.05), as we...
IOP Conference Series: Earth and Environmental Science, 2021
Global warming will affect the pattern of precipitation, evaporation, water run-off, soil moistur... more Global warming will affect the pattern of precipitation, evaporation, water run-off, soil moisture, and climate variations so that it can threaten food production. High evaporation and unpredictable precipitation will cause drought. Sandy soils have low water holding capacity, high infiltration, and high runoff. The application of soil amendments able to improve the soil’s physical properties through increasing the water holding capacity to increase crop productivity. The research aimed to determine the effect of the application of soil amendments to water holding capacity in sandy soils. The method used was a randomized complete design with one single factor, the type of soil amendments consisting of 7 treatments: P0 (control/without amendment), P1 (cow dung 60 tons ha-1), P2 (rice husk biochar 10 tons ha-1), P3 (clay-soils 10 tons ha-1), P4 (cow dung 60 tons ha-1+ rice husk biochar 10 tons ha-1), P5 (cow dung 60 tons ha-1+ clay-soils 10 tons ha-1), P6 (rice husk biochar 10 tons ha...
IOP Conference Series: Earth and Environmental Science, 2021
Organic agriculture needs to be continuously developed, in anticipation of climate change and the... more Organic agriculture needs to be continuously developed, in anticipation of climate change and the availability of inorganic fertilizers Therefore, it is necessary to look for local various organic matter that is potential and affordable to farmers. This study aims to determine the effect of Azolla mycrophylla (AM) and chicken manure (CM) on the growth of rice cultivated organically in sandy soil. The pot research used a factorial completely randomized design with 2 factors, the first factor was 4 levels of Azolla mycrophylla, namely. 0, 50, 100, and 150 tonnes ha−1. The second factor is chicken manure at a rate of 0, 20, and 40 tonnes ha−1. Azolla mycrophylla and chicken manure were given 2 weeks before planting. The results showed that there was an interaction between AM and CM on plant height, number of leaves, and number of tillers. At the age of 84 days after planting, the highest plant height, leaf number, and a number of tillers were found in the treatment of AM 50 tonnes ha−1 and chicken manure 20 tonnes ha−1. The use of Azolla mycrophylla 50 tonnes ha−1 is equivalent to reducing Urea fertilizer by 261 kg ha−1 or equivalent to N in the amount of 120 kg ha−1.
IOP Conference Series: Earth and Environmental Science, 2021
Indonesia’s population increase leads to increase in food needs. The increasing need for food req... more Indonesia’s population increase leads to increase in food needs. The increasing need for food requires national food security. However the country faces the problem of agricultural land diminishing. Sandy soil is one of the suboptimal land that can be used for agricultural cultivation. Sandy soil leads to problems such as low water-holding capacity that will result in low levels of soil moisture. Soil moisture content is a very important factor in plant growth. Accordingly, we need an alternative solution to solve the problem. One of technology used in agriculture is an irrigation system. Therefore, the author proposes an idea in forms of Semar Sandy-App. Semar Sandy-App is a monitoring system as well as a system that provides direct supply water in the plant root zone. The system uses subsurface drip irrigation with perforated pipes then water comes out of the hole to wet the soil. This system can be a solution to optimize sandy soil through efficiency and effectiveness in providin...
IOP Conference Series: Earth and Environmental Science, 2018
The aim of this study was to determine the soil aggregate stability and its relationship with ano... more The aim of this study was to determine the soil aggregate stability and its relationship with another variable in alfisol. The research used completely randomized design with four treatments: two sterilization levels (no sterilization and with sterilization) and two levels of mycorrhizal inoculation (no mycorrhizal and with mycorrhizal). Mycorrhizal (5 grams/pot) was inoculated before planting rice seeds. The soil aggregate stability was measured by wet-sieving and turbidimetric measurements. The results showed that soil aggregate stability was higher in mycorrhizal inoculated than non-mycorrhizal inoculated treatment, by 5% in sterilization soil and 3.2% in non-sterilization soil. The correlation analysis indicated that soil aggregate stability has a tight relationship with spore population, total glomalin, available glomalin, dry weight, tiller number of plant, and soil organic C. Inoculation of mycorrhizal contributed to stabilize soil aggregates in alfisol
Coastal sandy soils have low fertility because most nutrients, mainly N losses due to leaching an... more Coastal sandy soils have low fertility because most nutrients, mainly N losses due to leaching and evaporation. Appropriate technology to reduce N losses and increase the growth of citrus seedlings in the coastal sandy soil lined with using fertilizer Phonska coated with neem seed extract and zeolite that is slow release. This main research aimed to study the effects of fertilizer dose Phonska Zeoneem the availability of N, P, K soil and N,P,K uptake of citrus seedlings, studying the vertical distribution of nitrogen and find the optimum dose of Phonska Zeoneem fertilizer for the growth of citrus seedlings. Field experiments conducted in the coastal sandy land Bugel, Kulonprogo while soil and plant analysis performed at the Laboratory of Chemistry and Fertility, Department of Soil, Agriculture Faculty, Gadjah Mada University in June-December 2010. The material used is a fertilizer Phonska, Phonska Zeoneem, cow manure, citrus seeds and sandy soil. Experiment based on randomized block design with one treatment factor consisting of five level that is the control, fertilizer Phonska, Phonska Zeoneem at 60%, 80% and 100% dosage recommendations. Fertilization is done every 2 months. The results showed that Phonska Zeoneem fertilizer application significantly able to increase the availability of N, P, K in soil and uptake of N, P, K plant and is able to enhance the growth of citrus seedlings. Vertical distribution of nitrogen (N-NH4 and N-NO 3) showed that fertilizer Phonska Zeoneem able to inhibit the nitrification of nitrogen so that nitrate concentrations decreased over dept soil. Zeoneem Phonska fertilizer at 80% dosage recommendations, equivalent to 40 g/plant per 2 months is the optimum recommendations for fertilizing citrus seedlings in the coastal sandy soil.
AgriHealth: Journal of Agri-food, Nutrition and Public Health
The problems faced are uneven football field surface, uneven grass growth, many pebbles and bould... more 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 fie...
Annals of Agricultural Sciences
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Papers by Aktavia Herawati