Sains Tanah最新文献_第8页

Phosphorus availability as affected by the application of organic amendments in Ultisols 有机改良剂对土壤磷有效性的影响

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.41284

Z. Muktamar, Lifia Lifia, Teguh Adiprasetyo

{"title":"Phosphorus availability as affected by the application of organic amendments in Ultisols","authors":"Z. Muktamar, Lifia Lifia, Teguh Adiprasetyo","doi":"10.20961/stjssa.v17i1.41284","DOIUrl":"https://doi.org/10.20961/stjssa.v17i1.41284","url":null,"abstract":"The adequacy and availability of phosphorous (P) in the soil during the organic matter decomposition are important for plant growth, especially in the early stages since most organic matter slowly release plant nutrients. Therefore, this study was conducted to determine the availability of P during organic amendment s in Ultisols . The incubation experiment used a completely Randomized Design (CRD) for 7 treatments which consisted of vermicompost, chicken, and cattle manure at the rate of 15 and 30 Mg ha -1 . Soil and organic amendment s were incorporated in to a 5 kg polybag and the mixture was incubated for 7 weeks. The soil was sampled at the 2, 3, 4, 5, 6, and 7 weeks, and analyzed for P availability and pH . Also, the Total Soil Organic Carbon (TSOC), Total Soil Nitrogen (TSN), exchangeable Al, and Cation Exchange Capacity (CEC) were analyzed from the soil sampled either at week 4 or 7. The result showed that P increased slowly in the first 3 weeks of incubation, followed by a drastic continuous increase in week 4. The experiment also confirmed that chicken manure released the highest and fastest amount of P to the soil as compared to vermicompost, and cattle manure. On average, the increment of P was 2.28, 1.71, and 1.97 mg kg -1 week -1 for chicken manure, vermicompost, and cattle manure respectively . Furthermore, the improvement of soil chemical properties was achieved using amendment as indicated by the increase in TSN, soil pH, and a decrease in exchangeable Al. The result was significant for P organic fertilization to en sure its availability for plant growth, leading t o improved productivity, especially in organic farming systems .","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"17 1","pages":"16-22"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49304869","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}

引用次数: 12

Analysis of drought hazards in agricultural land in Pacitan Regency, Indonesia 印度尼西亚太平洋县农业用地干旱灾害分析

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.35688

Istika Nita, A. N. Putra, Alia Febrianingtyas

{"title":"Analysis of drought hazards in agricultural land in Pacitan Regency, Indonesia","authors":"Istika Nita, A. N. Putra, Alia Febrianingtyas","doi":"10.20961/stjssa.v17i1.35688","DOIUrl":"https://doi.org/10.20961/stjssa.v17i1.35688","url":null,"abstract":"Pacitan Regency is a region in East Java Province with varied landforms and high disaster potential, including drought. The drought hazard in this region has not yet been determined. This study was conducted to analyze the potential of drought in Pacitan Regency in 2018 with the previous two decades (1998 and 2008) to predict future droughts. The study also focused on verifying how land-use changes impact drought potential. Mapping drought potential was based on the Ministry of Forestry method and was modified for this study. Drought potential was determined by scoring features and analyzing with a weighted overlay. Reference parameters and patterns of land-use change, as determined by Landsat 5, 7, and 8 satellite imagery, were analyzed. Then, the changing pattern was used to predict future 2030 land-use patterns using business as usual (BAU) analysis. For comparison, a land-use analysis was also done using the land capability class (LCC) and regional spatial plan (RSP). Data was validated using a confusion matrix. The accuracy of the drought estimation for Pacitan Regency was 75%. The results showed that the drought potential high and very-high level risk groups increased. The increase occurred due to changes in land use, specifically land management and plant species selection. Based on the results of the predicting BAU analysis, the level of potential of drought will increase by 2030. The regional spatial plan (RSP) and LCC analysis determined that, with no drought intervention, drought hazard in Pacitan Regency will increase.","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"17 1","pages":"7-15"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48932237","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}

引用次数: 9

Carbon dioxide emission and peat hydrophobicity in tidal peatlands 潮泥炭地二氧化碳排放与泥炭疏水性

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.41153

S. Nurzakiah, N. Wakhid, A. Hairani

{"title":"Carbon dioxide emission and peat hydrophobicity in tidal peatlands","authors":"S. Nurzakiah, N. Wakhid, A. Hairani","doi":"10.20961/stjssa.v17i1.41153","DOIUrl":"https://doi.org/10.20961/stjssa.v17i1.41153","url":null,"abstract":"Peatland describes the typology of tidal and freshwater swamplands. Peatlands are affected by tidal activity; the water level fluctuation causes the peat to dry out and then get wet, which affects the soil’s water content and carbon emissions. Additionally, mineral enrichment from river overflows affects soil fertility and peat stability. Peat stability is importantly related to the peatland management for agriculture. Functional groups in the peat, such as carboxyl and hydroxyl, are volatile and easily transform, decomposing from CHO bonds into CO 2 under aerobic conditions. The characteristics of functional groups can be changed from polar to non-polar at the organic colloid surface, leading to hydrophobicity. This study evaluated carbon dioxide emissions and peat hydrophobicity. The research was conducted by survey and field sampling on two differently managed plots of peatlands: a rubber-and-pineapple intercrop plot and a traditionally-managed rubber plot. Parameters measured were CO 2 flux, groundwater levels, water content, and peat hydrophobicity. Peat hydrophobicity was assessed by analyzing certain functional groups using a Fourier-Transform Infrared (FTIR) spectrophotometer. The results showed that CO 2 emissions were 21.78 ± 5.44 (mg ha -1 yr -1 ) for the rubber-and-pineapple intercrop and 19.15 ± 5.18 (mg ha -1 yr -1 ) for the traditionally-managed rubber plot. Peat hydrophobicity for both plots decreased with increasing soil depth, indicating that peat on the surface layer (0–50 cm) is more vulnerable to drought and fires, especially if there is no water management.","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"17 1","pages":"71-77"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41662929","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}

引用次数: 3

Aggregate stability of Alfisols root zone upon turfgrass treatment 碱土根区在草坪草处理中的团聚体稳定性

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.40455

Rahayu Rahayu, J. Syamsiyah, L. Sa'diyah

引用次数: 3

Soil properties and shallot yield responses to different salinity levels 土壤性质和葱产量对不同盐度水平的响应

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.41566

J. Syamsiah, Rahayu Rahayu, W. Binafsihi

引用次数: 2

Agriculture versus climate change – A narrow staple-based rural livelihood of Papua New Guinea is a threat to survival under climate change 农业与气候变化——在气候变化的背景下，巴布亚新几内亚以主食为主的狭隘农村生计对其生存构成了威胁

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.41545

P. S. Michael

{"title":"Agriculture versus climate change – A narrow staple-based rural livelihood of Papua New Guinea is a threat to survival under climate change","authors":"P. S. Michael","doi":"10.20961/stjssa.v17i1.41545","DOIUrl":"https://doi.org/10.20961/stjssa.v17i1.41545","url":null,"abstract":"This paper presents a synthesis related to the assessment of climate change and its impacts on productivity of staple crops in Papua New Guinea (PNG), paying close attention to the change in population in the next 80 years. As much as the changes in the climatic and environmental factors will affect agriculture, evidence available in the literature show increase in global and local population will put additional pressure on agriculture by competing with available land and other resources that support agricultural productivity. The developing and underdeveloped countries are considered to be largely vulnerable as more than 85% of the people depend on subsistence agriculture for rural livelihood. This synthesis showed more than 60–85% of the rural people in PNG depend on sweet potato, banana, Colocasia taro, and greater yam. Projection of the population showed there will be 22–31 million people by 2100 and will depend on narrow staple-based subsistence agriculture. The population projected means the density will be 42 people per km2, putting more pressure on limited land available. When that happens, PNG will not be prepared to mitigate, be resilient and adapt because of poor infrastructure, no development plans and lack of post-harvest technologies for loss management of the staples, most of which are root and tuber crops.","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"17 1","pages":"78-93"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46987597","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}

引用次数: 2

Back Matter 回到问题

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.42639

V. Cahyani

引用次数: 0

Rehabilitation of critical land by Implementing complex agroforestry at the prioritized subwatersheds in the Muria Region 通过在穆里亚地区优先考虑的次级流域实施复杂的农林业来恢复关键土地

Sains Tanah Pub Date : 2020-06-29 DOI: 10.20961/stjssa.v17i1.37704

M. S. Budiastuti, D. Purnomo, Hendy Hendro, Untung Sudjianto, B. Gunawan

{"title":"Rehabilitation of critical land by Implementing complex agroforestry at the prioritized subwatersheds in the Muria Region","authors":"M. S. Budiastuti, D. Purnomo, Hendy Hendro, Untung Sudjianto, B. Gunawan","doi":"10.20961/stjssa.v17i1.37704","DOIUrl":"https://doi.org/10.20961/stjssa.v17i1.37704","url":null,"abstract":"The prioritized subwatersheds are comprised of seven subwatersheds that have been declared critical within the 52 subwatersheds in the Muria Mountains. An area of approximately 11,000 ha, the topography of the prioritized subwatersheds is wavy—the typical slope ranges from 25 to 45%—and susceptible to erosion. The purpose of this research was to evaluate agroforestry cropping patterns to support soil conservation and reclamation on critical lands. This study is a quantitative description of research conducted through survey. The results show that most of the researched area has Inceptisols soil type with sandy, clay, and loam textures. The nitrogen, phosphate, potassium, C-organic, and organic matter contents are relatively low while the vegetation Diversity Index is categorized as medium. Sengon trees dominate in the prioritized subwatersheds area, followed by mahogany, coffee, and teak with average Importance Values of 89.57, 60.24, 78.40, and 21.03, respectively. This research shows that an agroforestry system comprised of sengon trees and coffee is ideally applied in the prioritized subwatersheds. Coffee requires shade and reduces rain-induced erosion; sengon trees function as a shade while at the same time contributing to the soil as a source of nutrients. During rains, this combined agroforestry system is able to control surface runoff and soil erosion. A sengon/coffee-tree based agroforestry system is ecologically friendly and appropriate for development in the prioritized subwatersheds.","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"17 1","pages":"63-70"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42017169","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}

引用次数: 1

The Effects of Biochar and Compost on Different Cultivars of Shallots (Allium ascalonicum L.) Growth and Nutrient Uptake in Sandy Soil Under Saline Water 生物炭和堆肥对盐水条件下沙质土壤中不同品种葱生长和养分吸收的影响

Sains Tanah Pub Date : 2019-12-30 DOI: 10.20961/stjssa.v16i2.34209

Rahayu Rahayu, J. Syamsiyah, V. Cahyani, S. Fauziah

{"title":"The Effects of Biochar and Compost on Different Cultivars of Shallots (Allium ascalonicum L.) Growth and Nutrient Uptake in Sandy Soil Under Saline Water","authors":"Rahayu Rahayu, J. Syamsiyah, V. Cahyani, S. Fauziah","doi":"10.20961/stjssa.v16i2.34209","DOIUrl":"https://doi.org/10.20961/stjssa.v16i2.34209","url":null,"abstract":"High salinity irrigation will cause nutrient uptake and shallot growth to deplete due to its sensitivity to salinity. This research aimed to investigate the effect of biochar and compost on shallot growth and nutrient uptake in sandy soil like Entisol when irrigated using salty water. This research carried out some pot experiments and put on the field using a completely randomized design. The first factor was based on the amendment with control of 20 tons ha -1 of Biochar, 10 tons ha -1 of compost, and a mixture of 10 tons ha -1 biochar and 5 tons ha -1 of compost; the second factor was composed of 3 shallot cultivars (Brebes, Pemalang, and Purbalingga). Each pot was filled with 15 kg of soil; the pot 30 cm in diameter, incubated with saline water and irrigated by 2 dS m -1 . The results show that irrigation with ground saline water causes Entisol to increase exchangable Na, Ece and SAR, decrease exchangeable Ca and Mg. The application of all treatments decreased SAR. The application of compost significantly increased N and K uptake but made soil pH, EC, and SAR to decrease while fresh weight and dry weight of bulb in Brebes cultivars increased. The combination of biochar with 5 tons ha -1 of compost produced the highest yield on plant height and number of tuber in Pemalang cultivars and had the largest tuber diameter in Purbalingga cultivars. There is an interaction between amendment and cultivar on plant height, fresh weight of tuber (P<0.01), dry weight of tuber (P<0.01).","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"16 1","pages":"216-228"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44121739","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}

引用次数: 3

Studying the Residual Effect of Zeolite and Manure on Alfisols Cation Exchange Capacity and Green Bean Yield 沸石和粪肥残留对Alfisols阳离子交换能力和绿豆产量影响的研究

Sains Tanah Pub Date : 2019-12-30 DOI: 10.20961/stjssa.v16i2.30190

Ahmad Yazid Fudlel, S. Minardi, S. Hartati, J. Syamsiyah

{"title":"Studying the Residual Effect of Zeolite and Manure on Alfisols Cation Exchange Capacity and Green Bean Yield","authors":"Ahmad Yazid Fudlel, S. Minardi, S. Hartati, J. Syamsiyah","doi":"10.20961/stjssa.v16i2.30190","DOIUrl":"https://doi.org/10.20961/stjssa.v16i2.30190","url":null,"abstract":"Nowadays the innovations in organic agriculture systems continue to be developed to achieve a sustainable agriculture system. In Indonesia with high rainfall, nutrient loss is still a major problem. The application of zeolite and manure as a soil amendment is expected to increase nutrients available in soil and cation exchange capacity of the soil in the long term. The results on the first planting season showed a significant increase in chemical soil fertility. The objective of this study is to research the effect of residue zeolite and manure on soil chemical fertility and yields of the second planting season. This study used a complete randomized block design. The factors were a dose of zeolite (Z1: 2.5 tons ha -1 ; Z2: 5 tons ha -1 ) and kind of manure (P1: quail manure; P2: cow manure), with three replications. The result showed that zeolite treatment of 5 tons ha -1 and cow manure increased the total N soil by 27.78% and 45.4% compared to the control. The treatment of quail manure increased soil organic matter 78.78% compared to the control. The treatment of cow manure increased the green bean yield 28.76% compared to the control.","PeriodicalId":36463,"journal":{"name":"Sains Tanah","volume":"16 1","pages":"181-190"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46082410","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}

引用次数: 2