Tran Van Dung, Le Van Dang, Ngo Phuong Ngoc, N. N. Hung
Abstract Exchangeable cations and soil nutrients leach out/lost in the raised bed soils system through irrigation water and rainwater. Cover crops or crop residue mulching are considered sustainable agricultural measures because they prevent soil degradation and compaction and increase the soil ecological diversity. However, the impact of these on soil quality in fruit orchards in the Vietnamese Mekong Delta is not well studied. The present work aimed to assess the effect of cover crops (grass, pinto peanut) and rice straw mulching on change in soil chemical properties and productivity of pomelo. The 3-year (2019–2021) field experiment was conducted at Phu Huu Commune, Chau Thanh District, Hau Giang Province, Vietnam. Four treatments, control (no-cover crop), grass cover crop, mulching with rice straw (MRS), and pinto peanut cover crop were used. Soil samples were collected from the depth of 0–20 and 20–40 cm for analyzing soil pH, total nitrogen (TN), total phosphorus (TP), available phosphorus (AP), and soil organic matter (SOM). Results showed that MRS or cover crop by pinto peanut significantly decreased soil acidity in the topsoil layer. Soil fertility properties (TN, TP, AP, and SOM) at the depth 0–20 cm were greatly improved after the application of the mulched rice straw and cover crop by legume, thus improving pomelo yield. Further study is required to understand the effects of the cover crop with pinto peanut and rice straw mulching on the physical and biological properties of soil as well as nutrient uptake of pomelo orchards.
{"title":"Soil fertility and pomelo yield influenced by soil conservation practices","authors":"Tran Van Dung, Le Van Dang, Ngo Phuong Ngoc, N. N. Hung","doi":"10.1515/opag-2022-0181","DOIUrl":"https://doi.org/10.1515/opag-2022-0181","url":null,"abstract":"Abstract Exchangeable cations and soil nutrients leach out/lost in the raised bed soils system through irrigation water and rainwater. Cover crops or crop residue mulching are considered sustainable agricultural measures because they prevent soil degradation and compaction and increase the soil ecological diversity. However, the impact of these on soil quality in fruit orchards in the Vietnamese Mekong Delta is not well studied. The present work aimed to assess the effect of cover crops (grass, pinto peanut) and rice straw mulching on change in soil chemical properties and productivity of pomelo. The 3-year (2019–2021) field experiment was conducted at Phu Huu Commune, Chau Thanh District, Hau Giang Province, Vietnam. Four treatments, control (no-cover crop), grass cover crop, mulching with rice straw (MRS), and pinto peanut cover crop were used. Soil samples were collected from the depth of 0–20 and 20–40 cm for analyzing soil pH, total nitrogen (TN), total phosphorus (TP), available phosphorus (AP), and soil organic matter (SOM). Results showed that MRS or cover crop by pinto peanut significantly decreased soil acidity in the topsoil layer. Soil fertility properties (TN, TP, AP, and SOM) at the depth 0–20 cm were greatly improved after the application of the mulched rice straw and cover crop by legume, thus improving pomelo yield. Further study is required to understand the effects of the cover crop with pinto peanut and rice straw mulching on the physical and biological properties of soil as well as nutrient uptake of pomelo orchards.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67231815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Increased concerns for sustainable agriculture have led to increased use of beneficial rhizobacteria as biofertilizers. Soil bacteria play a significant role in the nutrient cycle of soil, but their presence can be affected by abiotic stress, such as salinity. This study aimed to compare the chemical characteristics of slightly saline and non-saline rice soil and examine the bacterial community structure in both rhizosphere and bulk soil. We utilized 16SrRNA gene sequencing and performed arithmetic means clustering, a type of hierarchical clustering, on the samples collected from the rice fields of Cimrutu and Rawaapu Village in Cilacap Regency, Indonesia. Although the nutrient content was similar in both soils, there was a noticeable difference in their electrical conductivity (EC) despite the two locations being less than 4 km apart. The EC value in the Cimrutu soil suggests that it is non-saline, while the Rawaapu soil exhibits a low salinity level. The study found that Proteobacteria was the most prevalent phylum in saline rhizospheric soil. In contrast, Firmicutes was the most abundant group in saline bulk soil and non-saline rhizospheric and bulk soil. Additionally, Halothiobacillus, Thioalkalispira-Slvurivermis, and Acidothermus genera dominated the saline rhizospheric soil, suggesting that halotolerant microbes play a significant role as plant growth-promoting rhizobacteria in saline soil. The study provides valuable insights into cultured or uncultured bacterial populations and structure in saline and non-saline soil to develop future strategies related to salinity by introducing beneficial microbes.
{"title":"Diversity and structure of bacterial communities in saline and non-saline rice fields in Cilacap Regency, Indonesia","authors":"Reginawanti Hindersah, Etty Pratiwi, Yuli Siti Fatma, Tualar Simarmata","doi":"10.1515/opag-2022-0225","DOIUrl":"https://doi.org/10.1515/opag-2022-0225","url":null,"abstract":"Abstract Increased concerns for sustainable agriculture have led to increased use of beneficial rhizobacteria as biofertilizers. Soil bacteria play a significant role in the nutrient cycle of soil, but their presence can be affected by abiotic stress, such as salinity. This study aimed to compare the chemical characteristics of slightly saline and non-saline rice soil and examine the bacterial community structure in both rhizosphere and bulk soil. We utilized 16SrRNA gene sequencing and performed arithmetic means clustering, a type of hierarchical clustering, on the samples collected from the rice fields of Cimrutu and Rawaapu Village in Cilacap Regency, Indonesia. Although the nutrient content was similar in both soils, there was a noticeable difference in their electrical conductivity (EC) despite the two locations being less than 4 km apart. The EC value in the Cimrutu soil suggests that it is non-saline, while the Rawaapu soil exhibits a low salinity level. The study found that Proteobacteria was the most prevalent phylum in saline rhizospheric soil. In contrast, Firmicutes was the most abundant group in saline bulk soil and non-saline rhizospheric and bulk soil. Additionally, Halothiobacillus, Thioalkalispira-Slvurivermis, and Acidothermus genera dominated the saline rhizospheric soil, suggesting that halotolerant microbes play a significant role as plant growth-promoting rhizobacteria in saline soil. The study provides valuable insights into cultured or uncultured bacterial populations and structure in saline and non-saline soil to develop future strategies related to salinity by introducing beneficial microbes.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135802003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ali Jamil, Muhammad Saleh S. Ali, Imam Mujahidin Fahmid, Darmawan Salman, Rahmadanih Rahmadanih
Abstract This study aims to examine the dynamics of subsidized fertilizer management in rice production areas in Sidrap and Wajo districts, South Sulawesi province. Using a case study approach with qualitative analysis, the study combined primary data from in-depth interviews and secondary data derived from various studies and reports from government organizations. The results show that there is a considerable gap between the government’s fertilizer budget and farmers’ actual needs, leading to coverage of only 37%, thus forcing farmers to purchase more expensive non-subsidized fertilizers. The inefficient distribution system results in delays and scarcity. As a result, there will be market and price dualism between subsidized and non-subsidized markets, as well as subsidized and non-subsidized prices. Enforcement of pricing regulations faces hurdles due to the black market. In addition, farmers use the “foster father” system to obtain credit. To improve fertilizer management, the study recommends a multifaceted approach: increased budget allocation, efficient distribution, strong enforcement of pricing regulations, and innovative financing solutions such as the Tani Card. These strategies, along with improved inter-agency coordination, aim to address challenges and increase the effectiveness of subsidized fertilizer policies.
{"title":"Subsidized fertilizer management in the rice production centers of South Sulawesi, Indonesia: Bridging the gap between policy and practice","authors":"Ali Jamil, Muhammad Saleh S. Ali, Imam Mujahidin Fahmid, Darmawan Salman, Rahmadanih Rahmadanih","doi":"10.1515/opag-2022-0233","DOIUrl":"https://doi.org/10.1515/opag-2022-0233","url":null,"abstract":"Abstract This study aims to examine the dynamics of subsidized fertilizer management in rice production areas in Sidrap and Wajo districts, South Sulawesi province. Using a case study approach with qualitative analysis, the study combined primary data from in-depth interviews and secondary data derived from various studies and reports from government organizations. The results show that there is a considerable gap between the government’s fertilizer budget and farmers’ actual needs, leading to coverage of only 37%, thus forcing farmers to purchase more expensive non-subsidized fertilizers. The inefficient distribution system results in delays and scarcity. As a result, there will be market and price dualism between subsidized and non-subsidized markets, as well as subsidized and non-subsidized prices. Enforcement of pricing regulations faces hurdles due to the black market. In addition, farmers use the “foster father” system to obtain credit. To improve fertilizer management, the study recommends a multifaceted approach: increased budget allocation, efficient distribution, strong enforcement of pricing regulations, and innovative financing solutions such as the Tani Card. These strategies, along with improved inter-agency coordination, aim to address challenges and increase the effectiveness of subsidized fertilizer policies.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135662015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Simarmata, M. Setiawati, B. Fitriatin, D. Herdiyantoro, F. H. Khumairah
Abstract Salinity stress has become the major devastating constraint for rice growth. Halotolerant rhizobacterial nitrogen fixer (HRNF) was investigated for increasing the nitrogenase activity (NA), organic acid (OA), gibberellic acid (GA), and indole 3-acetic acid (IAA) productions, seedling growth, and rice yield. Six N fixers were isolated using Ashby’s (Ab1, Ab2, and Ab3) and Okon’s media (Az1, Az2, and Az3). Furthermore, bioassay was carried out using rice seedling grown on nitrogen-free medium. The Ab3 and Az2 isolates were selected and biomolecularly identified as Pseudomonas stutzeri and Klebsiella pneumoniae, respectively. These selected bacteria were used as active ingredients for Halotolerant rhizobacterial inoculant (HRI) dosage trials (0, 500, 1,000, and 1,500 g ha−1) on simple pot experiments. The Az group isolates had 3–5 times higher ability in fixing N and producing OA, GA, and IAA than the Ab group isolates. Furthermore, N-uptake, number of panicles, filled grain, and the rice yield of HRI treated pots were significantly increased. Application of 1,000–1,500 g HRI ha−1 had resulted in a significant increase in the yield of rice grain (26.10–28.27 g plant−1 or 15.4–25.09%) which was higher than the control. This result concludes that HRI could contribute in enhancing the ability of rice to adapt and grow under saline stress.
盐胁迫已成为水稻生长的主要破坏性制约因素。研究了耐盐根瘤菌固氮剂(HRNF)对提高氮酶活性(NA)、有机酸(OA)、赤霉素(GA)和吲哚- 3-乙酸(IAA)产量、幼苗生长和水稻产量的影响。采用Ashby培养基(Ab1、Ab2和Ab3)和Okon培养基(Az1、Az2和Az3)分离6个N固定物。在无氮培养基上对水稻幼苗进行了生物测定。Ab3和Az2分离株经生物分子鉴定分别为stutzeri假单胞菌和肺炎克雷伯菌。这些选定的细菌作为活性成分，在简单的盆栽试验中进行耐盐根瘤菌接种剂(HRI)剂量试验(0,500,1,000和1,500 g ha - 1)。Az组的固定N和产生OA、GA、IAA的能力是Ab组的3-5倍。氮素吸收量、穗数、灌浆粒数和水稻产量均显著提高。施1000 ~ 1500 g HRI hm - 1可显著提高水稻产量(26.10 ~ 28.27 g hm - 1或15.4 ~ 25.09%)，高于对照。由此可见，HRI对提高水稻对盐胁迫的适应能力和生长能力具有一定的促进作用。
{"title":"Enhancing the ability of rice to adapt and grow under saline stress using selected halotolerant rhizobacterial nitrogen fixer","authors":"T. Simarmata, M. Setiawati, B. Fitriatin, D. Herdiyantoro, F. H. Khumairah","doi":"10.1515/opag-2022-0195","DOIUrl":"https://doi.org/10.1515/opag-2022-0195","url":null,"abstract":"Abstract Salinity stress has become the major devastating constraint for rice growth. Halotolerant rhizobacterial nitrogen fixer (HRNF) was investigated for increasing the nitrogenase activity (NA), organic acid (OA), gibberellic acid (GA), and indole 3-acetic acid (IAA) productions, seedling growth, and rice yield. Six N fixers were isolated using Ashby’s (Ab1, Ab2, and Ab3) and Okon’s media (Az1, Az2, and Az3). Furthermore, bioassay was carried out using rice seedling grown on nitrogen-free medium. The Ab3 and Az2 isolates were selected and biomolecularly identified as Pseudomonas stutzeri and Klebsiella pneumoniae, respectively. These selected bacteria were used as active ingredients for Halotolerant rhizobacterial inoculant (HRI) dosage trials (0, 500, 1,000, and 1,500 g ha−1) on simple pot experiments. The Az group isolates had 3–5 times higher ability in fixing N and producing OA, GA, and IAA than the Ab group isolates. Furthermore, N-uptake, number of panicles, filled grain, and the rice yield of HRI treated pots were significantly increased. Application of 1,000–1,500 g HRI ha−1 had resulted in a significant increase in the yield of rice grain (26.10–28.27 g plant−1 or 15.4–25.09%) which was higher than the control. This result concludes that HRI could contribute in enhancing the ability of rice to adapt and grow under saline stress.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42014981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This research focuses on the development of utilizing Grade-C kenaf fibers (poor quality) produced from plantations in Pesanggarahan village, Lamongan regency, Indonesia, to produce alternative textile materials for textile craft and textile products. High-quality kenaf fibers have been utilized in the automotive, pulp and paper, and geotextile industries, while low-quality kenaf fibers are considered less potential and have only been used as gunny sacks. This research was conducted through an exploration and experimental approach, dividing the process into four stages, namely: (1) scouring stage using standard degumming of cellulose fibers; (2) testing strength and elongation of fibers; (3) bleaching stage of fibers; and (4) textile exploration stage with design and craft approach to create yarn and fabric weaving and crochet techniques, and the results were quantitatively tested to identify their mechanical and physical properties. This is beneficial as a solution to add value to a material to produce material trends for the development of textile craft products.
{"title":"Grade-C kenaf fiber (poor quality) as an alternative material for textile crafts","authors":"F. Ciptandi, Citra Puspitasari","doi":"10.1515/opag-2022-0203","DOIUrl":"https://doi.org/10.1515/opag-2022-0203","url":null,"abstract":"Abstract This research focuses on the development of utilizing Grade-C kenaf fibers (poor quality) produced from plantations in Pesanggarahan village, Lamongan regency, Indonesia, to produce alternative textile materials for textile craft and textile products. High-quality kenaf fibers have been utilized in the automotive, pulp and paper, and geotextile industries, while low-quality kenaf fibers are considered less potential and have only been used as gunny sacks. This research was conducted through an exploration and experimental approach, dividing the process into four stages, namely: (1) scouring stage using standard degumming of cellulose fibers; (2) testing strength and elongation of fibers; (3) bleaching stage of fibers; and (4) textile exploration stage with design and craft approach to create yarn and fabric weaving and crochet techniques, and the results were quantitatively tested to identify their mechanical and physical properties. This is beneficial as a solution to add value to a material to produce material trends for the development of textile craft products.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46085580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Introduction: Listeria monocytogenes is an opportunistic foodborne pathogen that can cause death to infected humans. The bacterial pathogen was frequently associated with food-borne origins including seafood. Thus, the present study aimed at screening anti-listeria-producing lactic acid bacteria (AL-LAB) isolated from the intestinal tracts of wild gilt-head seabream (Sparus aurata). Materials and Methods: Lactic acid bacteria (LAB) were isolated from the intestinal tracts of 15 wild gilt-head seabreams and screened for antimicrobial activity against Listeria monocytogenes. LAB isolated with the strongest anti-listerial activity was identified and further characterized for its anti-listerial compounds, followed by testing its protecting capacity on experimentally contaminated salmon fillets. Results: Three out of 52 LAB showed antagonistic activities against the foodborne pathogen. Of these 3, an isolate with the strongest inhibitory activity was obtained from strain MA115 (>400 AU). Based on its 16S rDNA sequence, strain MA115 had 99% similarity to Enterococcus faecium (Acc. Nb: MG461637.1). Further in vitro assays showed that the anti-listerial compound was very sensitive to proteinase K which suggested that it is a bacteriocin-like inhibitory substance (BLIS). In addition, the BLIS was resistant to a wide range of pH (2–10), and low (4 to −20°C) as well as high temperatures (30−121°C). In addition, the BLIS showed bactericidal activity on L. monocytogenes in artificially contaminated Salmon fillets stored at 0°C. Conclusion: The BLIS produced by Enterococcus faecium strain MA115 has the potential for application to improve food safety, although further studies are still required to specifically identify the BLIS, for biopreservation purposes.
{"title":"Bacteriocin-like inhibitory substance (BLIS) produced by Enterococcus faecium MA115 and its potential use as a seafood biopreservative","authors":"M. Amin, O. Odeyemi, F. Dewi, C. Burke","doi":"10.1515/opag-2022-0170","DOIUrl":"https://doi.org/10.1515/opag-2022-0170","url":null,"abstract":"Abstract Introduction: Listeria monocytogenes is an opportunistic foodborne pathogen that can cause death to infected humans. The bacterial pathogen was frequently associated with food-borne origins including seafood. Thus, the present study aimed at screening anti-listeria-producing lactic acid bacteria (AL-LAB) isolated from the intestinal tracts of wild gilt-head seabream (Sparus aurata). Materials and Methods: Lactic acid bacteria (LAB) were isolated from the intestinal tracts of 15 wild gilt-head seabreams and screened for antimicrobial activity against Listeria monocytogenes. LAB isolated with the strongest anti-listerial activity was identified and further characterized for its anti-listerial compounds, followed by testing its protecting capacity on experimentally contaminated salmon fillets. Results: Three out of 52 LAB showed antagonistic activities against the foodborne pathogen. Of these 3, an isolate with the strongest inhibitory activity was obtained from strain MA115 (>400 AU). Based on its 16S rDNA sequence, strain MA115 had 99% similarity to Enterococcus faecium (Acc. Nb: MG461637.1). Further in vitro assays showed that the anti-listerial compound was very sensitive to proteinase K which suggested that it is a bacteriocin-like inhibitory substance (BLIS). In addition, the BLIS was resistant to a wide range of pH (2–10), and low (4 to −20°C) as well as high temperatures (30−121°C). In addition, the BLIS showed bactericidal activity on L. monocytogenes in artificially contaminated Salmon fillets stored at 0°C. Conclusion: The BLIS produced by Enterococcus faecium strain MA115 has the potential for application to improve food safety, although further studies are still required to specifically identify the BLIS, for biopreservation purposes.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45124057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Samijan, S. Minarsih, S. Jauhari, S. Basuki, A. Susila, E. Nurwahyuni, Y. Hindarwati, A. Supriyo, V. E. Aristya
Abstract Indonesia has a dry land area of 79.69%, with low soil productivity (physical, chemical, and biological), as well as uneven and unpredictable rainfall. The dryland potential is optimally utilized using biofertilizers that can produce microbes to increase soil fertility. This research aims to determine the effects of biofertilizers on dryland improvement and crop production. The study was conducted from February to May 2021 in Central Java, Indonesia. Using a randomized block design in peanut cultivation. Six biofertilizers (Controlled, Agrimeth, BioNutrient, Gliocompost, Agrimeth + BioNutrient, Agrimeth + BioNutrient + Gliocompost) were applied with four replications. The performance of each biofertilizer was assessed based on chemical soil parameters, soil microbe population, plant growth, and yields. The soil in the study area belonged to the Inceptisols group and exhibited moderately acidic pH, low organic carbon content, and low nitrogen levels. However, it had high potential and available phosphorus, as well as moderate potential and high available potassium. BioNutrient and Gliocompost increased available phosphate by 12 and 19%, respectively, due to the presence of Pseudomonas fluorescens and Aspergillus sp. Agrimeth influenced the population of Azospirillum (45–63%) and enhanced phosphate-solubilizing bacteria. Agrimeth + BioNutrient + Gliocompost promoted the growth of the Azospirillum and Trichoderma populations (17–18%), resulting in a 45.04% increase in profits. Biofertilizer inoculation positively affected peanut development, root nodule formation, and yield. This novelty showed the potential of biofertilizers in improving dryland conditions, increasing crop productivity, and contributing to sustainable agriculture in the long term.
{"title":"Revitalizing sub-optimal drylands: Exploring the role of biofertilizers","authors":"Samijan, S. Minarsih, S. Jauhari, S. Basuki, A. Susila, E. Nurwahyuni, Y. Hindarwati, A. Supriyo, V. E. Aristya","doi":"10.1515/opag-2022-0214","DOIUrl":"https://doi.org/10.1515/opag-2022-0214","url":null,"abstract":"Abstract Indonesia has a dry land area of 79.69%, with low soil productivity (physical, chemical, and biological), as well as uneven and unpredictable rainfall. The dryland potential is optimally utilized using biofertilizers that can produce microbes to increase soil fertility. This research aims to determine the effects of biofertilizers on dryland improvement and crop production. The study was conducted from February to May 2021 in Central Java, Indonesia. Using a randomized block design in peanut cultivation. Six biofertilizers (Controlled, Agrimeth, BioNutrient, Gliocompost, Agrimeth + BioNutrient, Agrimeth + BioNutrient + Gliocompost) were applied with four replications. The performance of each biofertilizer was assessed based on chemical soil parameters, soil microbe population, plant growth, and yields. The soil in the study area belonged to the Inceptisols group and exhibited moderately acidic pH, low organic carbon content, and low nitrogen levels. However, it had high potential and available phosphorus, as well as moderate potential and high available potassium. BioNutrient and Gliocompost increased available phosphate by 12 and 19%, respectively, due to the presence of Pseudomonas fluorescens and Aspergillus sp. Agrimeth influenced the population of Azospirillum (45–63%) and enhanced phosphate-solubilizing bacteria. Agrimeth + BioNutrient + Gliocompost promoted the growth of the Azospirillum and Trichoderma populations (17–18%), resulting in a 45.04% increase in profits. Biofertilizer inoculation positively affected peanut development, root nodule formation, and yield. This novelty showed the potential of biofertilizers in improving dryland conditions, increasing crop productivity, and contributing to sustainable agriculture in the long term.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41808216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kesturi Pandanwangi, A. R. S. Putra, F. T. Haryadi, A. Astuti, S. P. Syahlani
Abstract Feed certification is released by authorized third parties as external cues indicating that products have met standard quality. However, farmers do not always take certification as the main consideration in product selection because of insufficient knowledge or they are skeptical about certification. This research aims to analyze the effect of feed certification, company image, opinion leader, perceived product quality, customer trust, and satisfaction to layer farmers’ customer loyalty. Respondents were selected by using purposive sampling with the criteria that respondents were layer farmers with experience for at least 1 year and customers of concentrate or ready-made feed. Data were collected by using questionnaire and analyzed with the partial least square. Results show that feed certification influenced perceived product quality with β = 0.127 and p ≤ 0.1; then, company image and opinion leader influenced perceived product quality with, β = 0.690 and β = 0.157 at p ≤ 0.05. Perceived product quality affected customer trust (β = 0.699, p ≤ 0.01) and customer satisfaction (β = 0.689, p ≤ 0.05). Then, customer trust and customer satisfaction positively influenced customer loyalty with β = 0.507, and β = 0.414 at p ≤ 0.01. Research findings indicated that feed certification was considered by layer farmers in feed purchasing behavior. However, company image was played as the most important factor among opinion leader and feed certification. These results implied that besides maintaining company image and the role of opinion leaders, feed mills and authorized institutions still urge to promote the importance of certification as product quality indicator.
{"title":"Does product certification matter? A review of mechanism to influence customer loyalty in the poultry feed industry","authors":"Kesturi Pandanwangi, A. R. S. Putra, F. T. Haryadi, A. Astuti, S. P. Syahlani","doi":"10.1515/opag-2022-0160","DOIUrl":"https://doi.org/10.1515/opag-2022-0160","url":null,"abstract":"Abstract Feed certification is released by authorized third parties as external cues indicating that products have met standard quality. However, farmers do not always take certification as the main consideration in product selection because of insufficient knowledge or they are skeptical about certification. This research aims to analyze the effect of feed certification, company image, opinion leader, perceived product quality, customer trust, and satisfaction to layer farmers’ customer loyalty. Respondents were selected by using purposive sampling with the criteria that respondents were layer farmers with experience for at least 1 year and customers of concentrate or ready-made feed. Data were collected by using questionnaire and analyzed with the partial least square. Results show that feed certification influenced perceived product quality with β = 0.127 and p ≤ 0.1; then, company image and opinion leader influenced perceived product quality with, β = 0.690 and β = 0.157 at p ≤ 0.05. Perceived product quality affected customer trust (β = 0.699, p ≤ 0.01) and customer satisfaction (β = 0.689, p ≤ 0.05). Then, customer trust and customer satisfaction positively influenced customer loyalty with β = 0.507, and β = 0.414 at p ≤ 0.01. Research findings indicated that feed certification was considered by layer farmers in feed purchasing behavior. However, company image was played as the most important factor among opinion leader and feed certification. These results implied that besides maintaining company image and the role of opinion leaders, feed mills and authorized institutions still urge to promote the importance of certification as product quality indicator.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47514152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joko Sutrisno, Eddy Tri Haryanto, Puji Harsono, B. Pujiasmanto, Reismaya Wanamertan Nugroho
Abstract The potential for vegetables in Indonesia is enormous. However, activities both upstream and downstream are still not well developed so that Indonesia is still importing horticulture to meet domestic needs. Because the potential for horticulture has not been maximized, the Ministry of Agriculture is holding a Horticultural Village program, one of which is in Central Java. The Horticultural Village Program that has been running requires a strategy to increase its sustainability. This research was conducted in Central Java to determine strategies to improve the sustainability of the horticultural village program. The method used in this study is multidimensional scaling (MDS) with the rapid appraisal for horticultural village (RAP-HORVI) technique or RAP-HORVIs. This research method will produce an index value that will determine the sustainability status of all dimensions used, namely, input, process, output, and outcome. The result of this analysis is that the Horticultural Village in Central Java is in a quite sustainable status. The results of this MDS show that 12 sensitive attributes can be used as strategies in increasing the value and sustainability status of Horticultural Villages in Central Java, namely, business management training, availability of production tools and materials, suitability of production input facilities, technical training, availability of capital, optimizing the use of infrastructure assistance, checking on farmers/micro, small, and medium enterprises beneficiaries of SK CPCL, intensive assistance by trainers, increasing planting area, increasing the number and variety of plant types, planning the area of land ready for planting, and increasing business capital.
{"title":"The improvement of horticultural villages sustainability in Central Java Province, Indonesia","authors":"Joko Sutrisno, Eddy Tri Haryanto, Puji Harsono, B. Pujiasmanto, Reismaya Wanamertan Nugroho","doi":"10.1515/opag-2022-0222","DOIUrl":"https://doi.org/10.1515/opag-2022-0222","url":null,"abstract":"Abstract The potential for vegetables in Indonesia is enormous. However, activities both upstream and downstream are still not well developed so that Indonesia is still importing horticulture to meet domestic needs. Because the potential for horticulture has not been maximized, the Ministry of Agriculture is holding a Horticultural Village program, one of which is in Central Java. The Horticultural Village Program that has been running requires a strategy to increase its sustainability. This research was conducted in Central Java to determine strategies to improve the sustainability of the horticultural village program. The method used in this study is multidimensional scaling (MDS) with the rapid appraisal for horticultural village (RAP-HORVI) technique or RAP-HORVIs. This research method will produce an index value that will determine the sustainability status of all dimensions used, namely, input, process, output, and outcome. The result of this analysis is that the Horticultural Village in Central Java is in a quite sustainable status. The results of this MDS show that 12 sensitive attributes can be used as strategies in increasing the value and sustainability status of Horticultural Villages in Central Java, namely, business management training, availability of production tools and materials, suitability of production input facilities, technical training, availability of capital, optimizing the use of infrastructure assistance, checking on farmers/micro, small, and medium enterprises beneficiaries of SK CPCL, intensive assistance by trainers, increasing planting area, increasing the number and variety of plant types, planning the area of land ready for planting, and increasing business capital.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45299347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Carsono, Reisyi R. Tambunan, S. Sari, N. Wicaksana
Abstract Gene pyramiding has been developed for effective resistant genes, such as bacterial blight resistance genes. However, in this report, pyramiding for multiple traits is presented. We evaluated 28 pyramided rice lines derived from 7 hybridizations of valuable parents for high yield potential, early maturity, aroma, high grain quality, and resistance to brown planthopper using both simple-sequence repeat markers and phenotypic markers. Pyramided rice genotypes were evaluated with RM282 molecular marker linked to GW3 gene associated with grain weight, RM259 (number of panicles), RM3600 (length of panicles), RM3701 (short panicles), RM19414 (Hd3), RM7601 (Hd2), RM190, and SSIIa (waxy), IFAP and ESP (aroma), RM586 (Bph3 and Bph4), and RM8213 (Qpbh4 and Bph17(t)). Eight genotypes (i.e., #9, #15, #16, #22, #25, #26, #27, and #28) were confirmed to have desired genes associated with multiple important traits based on molecular markers and morpho-agronomic traits. A strong correlation was found between RM19414 and heading date, between specific markers for aroma and sensory test. Meanwhile, a weak correlation was found between RM259 with panicle number, RM586, and RM8213 with trichome density. As presented in this study, gene pyramiding promises a new hope to combine multiple traits in rice breeding. Promising rice lines will be incorporated in the multiple traits breeding program.
{"title":"Molecular and phenotypic markers for pyramiding multiple traits in rice","authors":"N. Carsono, Reisyi R. Tambunan, S. Sari, N. Wicaksana","doi":"10.1515/opag-2022-0187","DOIUrl":"https://doi.org/10.1515/opag-2022-0187","url":null,"abstract":"Abstract Gene pyramiding has been developed for effective resistant genes, such as bacterial blight resistance genes. However, in this report, pyramiding for multiple traits is presented. We evaluated 28 pyramided rice lines derived from 7 hybridizations of valuable parents for high yield potential, early maturity, aroma, high grain quality, and resistance to brown planthopper using both simple-sequence repeat markers and phenotypic markers. Pyramided rice genotypes were evaluated with RM282 molecular marker linked to GW3 gene associated with grain weight, RM259 (number of panicles), RM3600 (length of panicles), RM3701 (short panicles), RM19414 (Hd3), RM7601 (Hd2), RM190, and SSIIa (waxy), IFAP and ESP (aroma), RM586 (Bph3 and Bph4), and RM8213 (Qpbh4 and Bph17(t)). Eight genotypes (i.e., #9, #15, #16, #22, #25, #26, #27, and #28) were confirmed to have desired genes associated with multiple important traits based on molecular markers and morpho-agronomic traits. A strong correlation was found between RM19414 and heading date, between specific markers for aroma and sensory test. Meanwhile, a weak correlation was found between RM259 with panicle number, RM586, and RM8213 with trichome density. As presented in this study, gene pyramiding promises a new hope to combine multiple traits in rice breeding. Promising rice lines will be incorporated in the multiple traits breeding program.","PeriodicalId":45740,"journal":{"name":"Open Agriculture","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44359184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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