Implementasi Evaluasi Lahan untuk Pengembangan Komoditas Tanaman berdasarkan Kesesuaian Agroklimat

Research activity is a form of expert service by the Research Group (RG) of "Agricultural Development Based on Local Soil-Land Characteristics" to its partner of the Wonoagung Wonogiri Organic Agriculture Association (Perkumpulan Pertanian Organik Wonoagung Wonogiri, PPOWW). The provision of suitable land for plant growth by partner is a required aspect in the development of certain commodities. Expert services by the RG is involving the implementation of land suitability evaluation based on agroclimatic conditions. The objective of the activity is to provide data and information on land suitability levels for certain commodities based on climatic conditions. The area which became the object of this research activity is where the PPOWW partner is located; namely Sidoharjo Sub-district, Wonogiri Regency. The secondary data was obtained from relevant sources in the form of annual rainfall (mm year-1), annual average air temperature (°C) and annual average humidity (%). The method of agroclimate suitability evaluation was carried out by following the procedure from Food and Agriculture Organization (FAO), by matching climatic conditions with plant growth requirements. Plant commodities that were evaluated for their suitability were durian, salak, mangosteen, apples and avocado. The results showed that durian is a suitable commodity (S1) with climatic conditions in Sidoharjo Sub-district. Salak and avocado are quite suitable commodities (S2). Meanwhile, mangosteen is a commodity which is moderately suitable (S3); whereas apple is a commodity that is not suitable (N). Durian, salak and avocado are commodities which have the potential to be developed by PPOWW in Sidoharjo Sub-district. The next stage of the evaluation implementation requires data and information on the suitability of soil conditions.

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An experiment in the control of the ground water-level in a fen peat soil

The Journal of Agricultural Science ◽

10.1017/s0021859600058639 ◽

1951 ◽

Vol 41 (1-2) ◽

pp. 149-162 ◽

Cited By ~ 3

Author(s):

H. H. Nicholson ◽

G. Alderman ◽

D. H. Firth

Keyword(s):

Ground Water ◽

Water Level ◽

Large Scale ◽

Field Experiments ◽

Peat Soil ◽

Climatic Conditions ◽

Ground Water Level ◽

Effective Control ◽

Soil Conditions ◽

Local Soil

1. The methods of investigation of the effect of ground water-level on crop growth, together with tho field installations in use, are discussed.2. Direct field experiments are handicapped by the difficulties of achieving close control on a sufficiently large scale, due to considerable variations of surface level and depth of peat within individual fields and to rapid fluctuations in rainfall and evaporation. Many recorded experiments are associated with climatic conditions of substantial precipitation during the growing season.3. Seasonal fluctuations of ground water-level in Fen peat soils in England, in natural and agricultural conditions, are described.4. The local soil conditions are outlined and the implications of profile variations are discussed.5. The effective control of ground water-level on a field scale requires deep and commodious ditches and frequent large underdrains to ensure the movement of water underground with sufficient freedom to give rapid compensatory adjustment for marked disturbances of ground water-level following the incidence of heavy rain or excessive evaporation.6. A working installation for a field experiment in ordinary farming conditions is described and the measure of control attained is indicated.

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Optimization of the Weighted Linear Combination Method for Agricultural Land Suitability Evaluation Considering Current Land Use and Regional Differences

Sustainability ◽

10.3390/su122310134 ◽

2020 ◽

Vol 12 (23) ◽

pp. 10134

Author(s):

Shouqiang Yin ◽

Jing Li ◽

Jiaxin Liang ◽

Kejing Jia ◽

Zhen Yang ◽

...

Keyword(s):

Land Use ◽

Regional Differences ◽

Agricultural Land ◽

Land Suitability ◽

Spatial Accessibility ◽

Combination Method ◽

Soil Conditions ◽

Weighted Linear Combination ◽

Suitability Evaluation ◽

Land Suitability Evaluation

This study was aimed at optimizing the weighted linear combination method (WLC) for agricultural land suitability evaluation (ALSE) through indicator selection, weight determination, and classification of overall suitability scores in Handan, China. Handan is a representative research area with distinct agricultural advantages and regional differences in land use, where the expansion of construction land has led to a rapid decrease of agricultural land in recent years. Natural factors (topography, climate, soil conditions, and vegetation cover) and socioeconomic factors (land use and spatial accessibility) were selected to establish a more comprehensive evaluation system. The index weight was calculated by the mutual information between index suitability and current land use. The consistency index was used to identify the boundary value dividing the overall suitability score into a suitable category and unsuitable category in each sub-region. The results demonstrated that the optimized WLC-ALSE model outperformed the comparison models using conventional methods in terms of the consistency between the evaluation results and current land use. Owing to the increasing limitations of topography, soil conditions, spatial accessibility, and land use, the proportions of suitable land in Zone 1, Zone 2, and Zone 3 were 77.4%, 67.5%, and 30.9%, respectively. The agricultural land unsuitable for agriculture (14.5%) was less than non-agricultural land suitable for agriculture (7.4%), indicating that agricultural land had low growth potential in Handan. Finally, specific recommendations were made to improve agricultural land suitability, alleviate land use conflicts, and further optimize the model. The results can provide effective guidance for WLC-ALSE and land use decision-making for sustainable agriculture.

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Woody plants constructing tundra soils

10.1101/789743 ◽

2019 ◽

Author(s):

Julia Kemppinen ◽

Pekka Niittynen ◽

Anna-Maria Virkkala ◽

Konsta Happonen ◽

Henri Riihimäki ◽

...

Keyword(s):

Woody Plants ◽

Global Climate ◽

Climatic Conditions ◽

Soil Conditions ◽

Observation Study ◽

Carbon Cycles ◽

Soil Variables ◽

Soil Organic Carbon Stocks ◽

Local Soil ◽

Local Soil Conditions

AbstractIn tundra, woody plants are expanding towards higher latitudes and altitudes due to increasingly favourable climatic conditions. Their expansion may also occur through increases in the coverage and height of the plants. These shifts may cascade further across the ecosystem, such as in the foundations of tundra: that is, in the soils. Yet, little is known about the effects woody plants have on local soil conditions. Here, we examined if the coverage and height of woody plants affect the growing-season soil moisture and temperature as well as soil organic carbon stocks. We carried out a field observation study in a dwarf shrub–dominated tundra and built a hierarchical model. We found that, after controlling for other possible factors influencing woody plants and soil conditions (namely, topography, snow, and the overall plant coverage), the coverage of woody plants inversely correlated with all three soil conditions. Yet, we found no link between the woody plant height to the soil variables. This indicates that woody plants affect local soil conditions in various ways, depending upon whether their expansion occurs though the growth of coverage or their height. Nevertheless, woody plants likely alter the very ground of the entire tundra system and feedback into the global climate system through the water, energy, and carbon cycles of tundra.

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Karakteristik Lahan untuk Kesesuaian Tanaman Apel (Malus sylvestris Mill.) di Kecamatan Sindang Dataran, Kabupaten Rejang Lebong, Bengkulu

Jurnal Hortikultura ◽

10.21082/jhort.v31n1.2021.p41-50 ◽

2021 ◽

Vol 31 (1) ◽

pp. 41

Author(s):

NFN Nurmegawati ◽

Yudi Sastro ◽

NFN Yahumri ◽

Jhon Firison ◽

Lina Ivanti ◽

...

Keyword(s):

Evaluation Method ◽

Climatic Factors ◽

Land Suitability ◽

Soil Conditions ◽

Limiting Factor ◽

Agricultural Commodity ◽

Suitability Evaluation ◽

Land Suitability Evaluation ◽

Malus Sylvestris ◽

Development Area

[Land Characteristics for Suitability of Apples (Malus sylvestris Mill.) in Sindang Dataran District, Rejang Lebong Regency, Bengkulu] Penilaian kesesuaian lahan merupakan tahap pertama dan penting dalam usaha pengembangan suatu komoditas pertanian. Kecamatan Sindang Dataran, Kabupaten Rejang Lebong merupakan salah satu lokasi yang direncanakan menjadi daerah pengembangan apel dengan temperatur udara mencapai 23oC dan ketinggian tempat bervariasi antara 785 – 1.129 lebih m dpl. dengan kondisi tanah yang cukup subur. Penelitian bertujuan untuk menentukan kelas kesesuaian lahan untuk tanaman apel. Penelitian dilakukan dengan metode survey dan observasi. Parameter yang diamati meliputi karakteristik lahan dan syarat tumbuh tanaman apel. Evaluasi kesesuaian lahan yang digunakan ialah kesesuaian lahan kualitatif, yaitu yang hanya didasarkan kondisi fisik lahan. Metode evaluasi kesesuaian lahan dilakukan dengan mengikuti prosedur dari FAO (1976), yaitu evaluasi kesesuaian lahan ini dilakukan dengan cara mencocokkan (matching) data antara karakteristik lahan dengan persyaratan tumbuh tanaman apel dan hasilnya didasarkan pada nilai terkecil (hukum minimum) sebagai keputusan kesesuaian lahan. Hasil penelitian menunjukkan bahwa kesesuaian lahan tanaman apel yang berada di Kecamatan Sindang Dataran, Kabupaten Rejang Lebong, dari faktor iklim termasuk S2 (cukup sesuai), sementara dari faktor ketersediaan hara termasuk S3 (sesuai marjinal). Hal yang menjadi faktor pembatas adalah rendahnya P tersedia, tetapi dapat diatasi dengan pemupukan sehingga dapat naik kelas menjadi S2. Melalui usaha pemupukan P maka Kecamatan Sindang Dataran memiliki potensi sebagai daerah pengembangan tanaman apel yang cukup sesuai.KeywordsKarakteristik lahan; Kesesuaian lahan untuk tanaman apel; Malus sylvertris MillAbstractLand suitability assessment is the first and important stage in the development of an agricultural commodity. Sindang Dataran District, Rejang Lebong Regency is one of the locations that is planned to be an apple development area with air temperatures reaching 23oC and altitude varying between 785–1,129 meters above sea level with fairly fertile soil conditions. The aim of the study was to determine the land suitability class for apple plants. The research was conducted using survey and observation methods. Parameters observed included land characteristics and growing conditions for apple plants. Land suitability evaluation used qualitative land suitability, which is only based on the physical condition of the land. The land suitability evaluation method is carried out by following the procedure from FAO (1976), namely the evaluation of land suitability is carried out by matching data between land characteristics and the requirements for growing apples and the results are based on the smallest value (minimum law) as a land suitability decision. The results showed that the suitability of the land for apple crops in Sindang Dataran District, Rejang Lebong Regency, from climatic factors including S2 (quite suitable), while from nutrient availability factors including S3 (marginal according to). The limiting factor is the low available P, but it can be overcome by fertilization so that it can be promoted to S2. Through P fertilization efforts, Sindang Dataran District has the potential as a suitable apple crop development area.

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Forecasting Temporal and Spatial Climatological Influence for Land Suitability Evaluation in Bentota Sri Lanka

International Journal of Built Environment and Sustainability ◽

10.11113/ijbes.v4.n1.158 ◽

2017 ◽

Vol 4 (1) ◽

Author(s):

Gayani Ranasinghe ◽

Ranjana UK Piyadasa

Keyword(s):

Spatial Distribution ◽

Distribution Pattern ◽

Daily Rainfall ◽

Land Suitability ◽

Monthly Rainfall ◽

Spatial Distribution Pattern ◽

Annual Rainfall ◽

Suitability Evaluation ◽

Land Suitability Evaluation ◽

Maximum Daily Rainfall

Climate change has raised much concern regarding its impacts on future land use planning, varying by region, time, and socio-economic development path. The principle purpose of land suitability evaluation is to predict the potential and limitation of the land for crop production and other land uses. This study was carried out to predict the temperature and rainfall trends as one of the major factor for evaluating land suitability. Climatic data such as monthly mean temperature, total monthly rainfall, maximum daily rainfall and total annual rainfall during last 30 years of all weather stations located in Bentota River basin was collected and analyzed applying time series analysis, correlation analysis and Manna Kendall trend test methods. Spatial distribution of forecast rainfall values was illustrated applying Arc GIS software. The findings revealed that monthly mean temperature and maximum daily rainfall had a general increasing trend whereas, total monthly rainfall and total annual rainfall showed a general decreasing trend in Bentota area. It was indicated relatively high rainfall situations during May and October while low rainfall situations during January and February by occurring flood situation in once per five year. During Yala season the area will be received comparatively more rainfall (331mm) than Maha season (300mm) in future. Community and the farmers in this area can be aware about the anticipated spatial distribution of total monthly rainfall during two major seasons and flood occurrence periods. Decision makers should evaluate land suitability of Bentota area by considering above climatological influences and its spatial distribution pattern that identified as major outcome of this research. The approach and the methodology adopted in this study will be useful for other researchers, agriculturalist and planners to identify the future climatological influences and its spatial distribution pattern for land suitability evaluations and other decision making purposes for other areas.

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Land Suitability Evaluation and Economic Feasibility of Cocoa Farming

Environmental Research Engineering and Management ◽

10.5755/j01.erem.76.3.24701 ◽

2020 ◽

Vol 76 (3) ◽

pp. 96-108

Author(s):

Yolanda Fitria Syahri ◽

Mustafa Rauf ◽

Samuel Arung Paembonan ◽

Siti Halimah Larekeng

Keyword(s):

Soil Depth ◽

Climatic Conditions ◽

Economic Feasibility ◽

Land Suitability ◽

Limiting Factors ◽

Survey Method ◽

Suitability Evaluation ◽

Land Suitability Evaluation ◽

Sampling Locations ◽

Cocoa Production

An evaluation of land suitability for cocoa cultivation was carried out in Southeast Sulawesi, Indonesia, according to its climatic conditions, as well as physical, morphological, and chemical soil characteristics. Land suitability evaluation is essential since cocoa production correlates positively with land characteristics. Purposive sampling with a survey method was used in this study. There were 11 sampling locations, comprising eight and three villages in North Kolaka and East Kolaka, respectively. Results showed that land suitability class for cocoa cultivation in North Kolaka is S2 (suitable) at 1,721 hectares in Pumbolo village and S1 (very suitable) in the other seven sampling locations, covering an area of 7,018 hectares in Rante Baru, Lasusua, Koroha, Watunohu, Lelehao, Tambuha, and Puurau village. Land suitability for cocoa production in all sampling locations in East Kolaka is S2 (suitable), covering an area of 11,213 hectares in Poli-Polia, Palenga Jaya, and Toasu village. The limiting factors in all sampling locations include P2O5 availability, humidity, and effective soil depth. Therefore, the addition of phosphorus fertilizers becomes one of the priority strategies to increase cocoa productivity. From an economic feasibility point of view, the R/C ratio in North Kolaka and East Kolaka is 1.56 and 2.12, respectively, which means that cocoa farming has a great potential to be developed in the two locations.

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Decorative values and the nutritional status of some Magnolia L. species under the climatic conditions of Lublin (Poland) Part. I. Decorative values of the plants

Acta Agrobotanica ◽

10.5586/aa.2012.066 ◽

2012 ◽

Vol 65 (2) ◽

pp. 125-132

Author(s):

Zenia Michałojć ◽

Zbigniew Jarosz

Keyword(s):

Botanical Garden ◽

Climatic Conditions ◽

Annual Rainfall ◽

Soil Conditions ◽

The North ◽

Long Shoots ◽

Number Of Leaves ◽

The City ◽

Continental Climate

Six species of Magnolia L., growing in the Botanical Garden of the Maria Curie-Skłodowska University in Lublin which is located on the north-western outskirts of the city of Lublin, were studied during the period 2006-2008. The aim of this study was to determine the dynamics of leaf and flower development in these Magnolia species under the climatic and soil conditions of Lublin as well as to evaluate the size of their leaves and long shoots. The present study included the following species: M. acuminata L., M. kobus DC, M. liliiflora Desr., M. salicifolia Siebold et Zuch, M. x soulangiana Soul.- -Bod., and M. tripetala L. The magnolia trees were planted in 1968-1989 on grey-brown podzolic soil derived from loess. The study area is affected by the continental climate which is characterized by large annual amplitude of temperatures, long summers as well as long and cold winters. The long-term average annual air temperature for this region is 8.1oC, while the long-term average annual rainfall reaches 541.6 mm. The obtained results showed that, among the Magnolia species studied, M. salicifolia flowered earliest under the climatic and soil conditions of Lublin, while M. tripetala was the last to bloom. Full leaf development, on average for the study period, was recorded earliest in M. salicifolia and M. liliiflora, whereas it occurred latest in M. tripetala. The leaves of M. tripetala were characterized by the greatest length and width, while the smallest leaves were recorded in M. kobus. M. liliiflora was found to show the smallest annual shoot increments and the lowest number of leaves.

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SOIL AND CLIMATE DETERMINE ANTIOXIDANT CAPACITY OF WALNUTS

Emirates Journal of Food and Agriculture ◽

10.9755/ejfa.2016-10-1390 ◽

2017 ◽

pp. 557 ◽

Cited By ~ 4

Author(s):

Fernando Figueroa ◽

Javier Marhuenda ◽

Amadeo Gironés-Vilaplana ◽

Débora Villaño ◽

Adela Villaño ◽

...

Keyword(s):

Biological Activity ◽

Antioxidant Capacity ◽

Nutritional Composition ◽

Climatic Conditions ◽

Annual Rainfall ◽

Soil Conditions ◽

Climate Factors

Factors as variety, soil and climatic conditions can influence the nutritional composition of walnuts and its resultant biological activity. The aim of this work was to study the influence of soil and climate factors in the antioxidant capacity of 10 different varieties of nuts, obtained from two experimental cultivars with different weather and soil conditions. Ten different varieties of walnut samples were obtained from two experimental cultivars, analyzing the antioxidant capacity by ORAC, DPPH• and ABTS+ methods. Eureka and Tehama walnuts showed the highest antioxidant capacity. Only Chico and Serr varieties (measured by ABTS+ method) and Franquette variety (measured by ORAC assay) increased their antioxidant capacity when cultured in Torre Blanca plots. The growing in El Chaparral plots increased the antioxidant capacity of every different variety. Minor temperature (especially when it reaches over -0 ºC) and humidity, as well as an increase on the annual rainfall are noteworthy factors that influence on the increase of antioxidant capacity of the wide majority of the analyzed walnuts.

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Isolasi dan Karakterisasi Bakteri Tanah Sawah di Kecamatan Medan Satria dan Bekasi Utara, Kota Bekasi, Jawa Barat

JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI ◽

10.36722/sst.v3i4.233 ◽

2017 ◽

Vol 3 (4) ◽

pp. 187 ◽

Cited By ~ 1

Author(s):

Arief Pambudi ◽

Nita Noriko ◽

Endah Permata Sari

Keyword(s):

Plant Growth ◽

Soil Bacteria ◽

Rice Field ◽

Plant Growth Promoting Rhizobacteria ◽

Fertilizer Application ◽

Rice Production ◽

Production Costs ◽

Soil Conditions ◽

Nitrogen Fixation Activity ◽

Growth Promoting

Abstrak - Produksi padi di Indonesia setiap tahun mengalami peningkatan, namun peningkatan ini belum mampu memenuhi kebutuhan nasional sehingga impor masih harus dilakukan. Salah satu masalah dalam produksi beras adalah penggunaan pupuk berlebih yang tidak hanya meningkatkan biaya produksi, namun juga merusak kondisi tanah. Aplikasi bakteri tanah sebagai Plant Growth Promoting Rhizobacteria (PGPR) dapat menjadi salah satu solusi terhadap masalah ini. Penelitian ini bertujuan untuk mengisolasi bakteri tanah dari 3 lokasi sawah daerah Bekasi, membandingkan keberadaan total bakteri pada ketiga lokasi tersebut, dan melakukan karakterisasi isolat berdasarkan karakter yang dapat memicu pertumbuhan tanaman. Dari ketiga lokasi, diperoleh total 59 isolat dan 5 diantaranya berpotensi sebagai PGPR karena kemampuan fiksasi Nitrogen, melarutkan Fosfat, katalase positif, dan motil. Dari ketiga lokasi pengambilan sampel, BK1 memiliki jumlah total bakteri terendah karena aplikasi pemupukan dan pestisida berlebih yang ditandai tingginya kadar P total, serta tingginya residu klorpirifos, karbofuran, dan paration. Kondisi fisik tanah BK1 juga didominasi partikel liat yang menyebabkan tanah menjadi lebih padat. Peningkatan jumlah penggunaan pupuk tidak selalu diikuti peningkatan produktivitas tanaman. Kata Kunci - Bakteri tanah, Rhizosfer sawah, PGPR, Pupuk Hayati Abstract - Rice production in Indonesia has increased annually, but this increase has not reached national demand,so imports still done. One of the problems in rice production is the use of excessive fertilizers that not only increase production costs, but also decreased the soil conditions. The application of soil bacteria as Plant Growth Promoting Rhizobacteria (PGPR) can be the one solution to face this problem. The objective of this study was isolate soil bacteria from 3 locations of rice field in Bekasi, compare the total bacteria in the three locations, and characterize isolates based on the character that can promote plant growth. From three locations, a total of 59 isolates were obtained and 5 of them were potential as a PGPRs due to its Nitrogen fixation activity, Phosphate solubilization, positive catalase, and motility. From three sampling sites, BK1 has the lowest TPC value because of excessive fertilizers and pesticides application which indicated by high total P levels, and also high chlorpyrifos, carbofuran and paration residues. The physical condition of BK1 soil is also dominated by clay particles which causes the soil more solid. Increasing of fertilizer application is not always followed by increased plant productivity. Keywords - Biofertilizer, PGPR, Rice field rhizosphere, Soil Bacteria

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