scholarly journals A modification of land suitability requirements for maize in the humid tropics of South Sulawesi

2021 ◽  
Vol 921 (1) ◽  
pp. 012012
Author(s):  
R Neswati ◽  
S Baja ◽  
C Lopulisa
Keyword(s):  
Soil Ph ◽  
Pearson Correlation ◽  
Maize Yield ◽  
Growth Cycle ◽  
Land Suitability ◽  
Base Saturation ◽  
Climate Type ◽  
Humid Tropic ◽  
South Sulawesi

Abstract Evaluation of land suitability needs to be supported by site-specific approach including criteria of the land use type. One of the important food crops in the humid tropic of Indonesia is maize (Zea mays L.). The main aim of this study was to modification land suitability requirements for maize in the specific humid tropic of Indonesia. There were 3 representative districts in the South Sulawesi of Indonesia, consists of Jeneponto (dry zone, climate type E), East Luwu (wet zone, climate type A), and Bulukumba (relative dry, climate type D). There were 20 profiles in each district so that total of representative are 60 farmers and 60 profiles. This study used the deductive parametric approach on determine land suitability index (based on crops yield), the determination of observation’s point was purposive sampling, data analysis was use Pearson correlation and linier regression analysis including on determination of interval value of land characteristics that have correlation and significant effect to maize yield. The result showed that land characteristics that have significant effect (p<0.01) to maize yield in the humid tropic of South Sulawesi were precipitation of growth cycle, soil pH, C-Organic, and base saturation. The range values of land characteristics which classified as optimal (S1) for humid tropic region of Indonesia were precipitation of growth cycle (650-900 mm), soil pH (6.8-7.0), C-organic ( >2.2%), and base saturation (>62%), furthermore classified as marginal (S3) whether precipitation of growth cycle(<270 mm), C-organic (<1.15%), soil pH (<5.47 or >8.0), and base saturation (10-41%).

scholarly journals Changes in Rainfall and Climate Classification in South Sulawesi

2021 ◽  
Vol 2 (5) ◽  
pp. 37-50
Author(s):  
Ridahwati Ridahwati
Keyword(s):  
Rainfall Intensity ◽  
Geographical Location ◽  
Subtropical Climate ◽  
The Sun ◽  
Q Value ◽  
Climate Classification ◽  
Climate Type ◽  
South Sulawesi ◽  
The Earth

The study discuss about Changes in Rainfall and Climate Classification in South Sulawesi. The climate of the Earth is determined by the location of the sun in relation to the earth's surface. Geographical location influences the categorization of climate on our planet. The results of the study (1) Rainfall in Bone Regency has been classified as high rainfall intensity for the last 10 years; (2) Determination of climate classification can be done by processing rainfall data obtained from data before weighting, after weighting, ranking, and opportunity; (3) The climate classification according to Schmidt-Ferguson for Bone Regency has a B climate type, which is a humid subtropical climate; and (4) The climate classification according This is based on a comparison of the number of dry months (BK) and wet months (BB), from which the Q value is obtained, which is then used to determine the type of climate according to Schmidt-Ferguson; (4) Oldeman's climate classification for Bone Regency has a C1 climate type, which has the characteristics of planting lowland rice once a year and secondary crops twice a year; (5) Oldeman's climate classification for Bone Regency has a This is based on the number of Wet Months (BB) and Dry Months (BK) in a given year

scholarly journals Land Suitability Index for Estimating Sugar Cane Productivity in the Humid Tropics of South Sulawesi Indonesia

2017 ◽  
Vol 21 (2) ◽  
pp. 115-122
Author(s):  
Risma Neswati ◽  
Christianto Lopulisa ◽  
Muhammad Nathan ◽  
Andi Ramlan
Keyword(s):  
Sugar Cane ◽  
Quantitative Methods ◽  
Soil Depth ◽  
Pearson Correlation ◽  
Land Suitability ◽  
Limiting Factors ◽  
Qualitative And Quantitative Methods ◽  
Sugarcane Crop ◽  
South Sulawesi ◽  
Suitability Index

This research was completed using mixed qualitative and quantitative methods. Field surveys were executed in sugar cane plantation throughout South Sulawesi Indonesia. Land suitability analyses were performed using a parametric approach with Storie’s index equation followed up with  correlation analysis using the Pearson correlation. Results revealed that the period for sugarcane crop growth in the humid tropic relatively dry regions of South Sulawesi Indonesia lasted for the months of November to July.  The land suitability for sugar cane in the research location was moderately suitable (S2c) and marginally suitable (S3c, S3s, S3s,f and S3c,w) with limiting factors such as relative humidity during crop maturation phase, the duration of sunlight, soil depth, soil texture, soil pH and soil drainage. Land suitability index at the research location ranged from 25.2 to 55.0; sugar cane yields ranged from 30.3 to 62.0 Mg ha-1 year-1. Pearson correlation coefficient (r) between LSI with cane and sugar productivity were 0.81 and 0.84 respectively, signifying the strength of the correlation between the two values. This also indicates that land suitability index can be estimating the potential crop yield in the humid tropicsthat relatively dry climate regions.

scholarly journals Evaluasi Kesesuaian Lahan Kecamatan Tompobulu Kabupaten Bantaeng untuk Pengembangan Tanaman Lada (Piper nigrum L)

2018 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
Muhammad Iqbal ◽  
Hazairin Zubair ◽  
Rismaneswati Rismaneswati
Keyword(s):  
Soil Depth ◽  
Research Area ◽  
Land Suitability ◽  
Land Evaluation ◽  
Limiting Factors ◽  
Piper Nigrum ◽  
Limiting Factor ◽  
Pepper Plant ◽  
Climate Type

Potential land resources can be expected through land evaluation activities. This study aims to evaluate the suitability of Tompobulu Subdistrict of Bantaeng Regency for the development of pepper plant (Piper nigrum L). This research was conducted in Tompobulu Sub-district of Bantaeng Regency which started from March to July 2016. This research used qualitative method and to determine land suitability using simple limiting factor approach. Determination of observation points based on the overlapping results of the baseline maps that resulted in 6 units of observation (soil profile). Production data and management of pepper crop obtained from farmers of respondents amounted to 10 people. The result of the study shows that the climate type of the research area according to Oldeman is classified as B2 with the actual land suitability class which is quite suitable (S2) with 3,657 Ha and the marginal fit (S3) with 3,023 Ha with rainfall limiting factor, soil depth, Slope, and surface rocks whereas the suitability class is quite suitable (S2) with an area of 6,160 Ha and corresponding marginally (S3) with an area of 520 Ha with rainfall and soil depth limiting factors. The potential of pepper plant development in Tompobulu Sub-district of Bantaeng Regency is quite large indicated by the percentage of land area that is quite suitable (S2) (82.40%).

scholarly journals EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN KACANG TANAH DI KELURAHAN PARDAMEAN KECAMATAN RANTAU SELATAN

2021 ◽  
Vol 8 (1) ◽  
pp. 11-17
Author(s):  
Fitra Syawal Harahap
Keyword(s):  
Land Use ◽  
Land Use Planning ◽  
Survey Methods ◽  
Land Suitability ◽  
Land Evaluation ◽  
Climate Type ◽  
High Productivity ◽  
Planning Decisions ◽  
Drill Tool

 Land evaluation is useful as a basis for sector development in an area that is useful for reorganizing existing land use so as to assist in making land use planning decisions. Peanuts have great potential to be cultivated and developed commercially because they have wide adaptability, high productivity, are resistant to plant pests, and are more resistant to marginal conditions. This research is descriptive with survey methods. The sampling method used is based on land map units with a free grid system for data. climates classified by climate type Schmidt and Ferguson. The land evaluation was carried out using the matching method by matching and comparing land characteristics with land suitability class criteria so that to obtain land suitability classes for peanut plants in Rantau Selatan District, Labuhanbatu Regency, there were 6 sample points so that the determination of soil characteristics values for soil samples was carried out using a soil drill tool. at a depth of 0-60 cm. Research results for peanut plants in Pardamean Village, Rantau Selatan District according to marginal / S3. Land suitability for peanut plants cultivated in Rantau Selatan District Labuhanbatu Regency 2.017 ha. The actual land suitability class for peanut plants is Nwa, while the potential land suitability class is S2tcwa.Keywords: Land Evaluation, Peanut Plants, Rantau Selatan, Labuhanbatu 

Determination of Ethnic Variation in Infant Nasolabial Anthropometry Using 3D Photographs: Implications for Bilateral Cleft Lip Nasal Correction

2021 ◽  
pp. 105566562110244
Author(s):  
Diana S. Jodeh ◽  
Jacqueline M. Ross ◽  
Maria Leszczynska ◽  
Fatima Qamar ◽  
Rachel L. Dawkins ◽  
...  
Keyword(s):  
African American ◽  
Interrater Reliability ◽  
Cleft Lip ◽  
Pearson Correlation ◽  
Statistical Significance ◽  
3D Analysis ◽  
Pediatric Clinic ◽  
Bilateral Cleft Lip ◽  
Post Hoc

Objective: We aimed to assess significant ethnic variabilities in infants’ nasolabial anthropometry to motivate variations in surgical correction of a synchronous bilateral cleft lip/nasal anomaly, specifically whether a long columella is a European feature, therefore accepting a short columella and/or delayed columellar lengthening suitable for reconstruction in ethnic patients. Methods: Thirty-three infants without craniofacial pathology (10 African American [AA], 7 Hispanic [H], and 16 of European descent [C]), ages 3 to 8 months, presenting to the Johns Hopkins All Children’s general pediatric clinic were recruited. Four separate 3D photographs (2 submental and frontal views each) were taken using the Vectra H1 handheld camera (Canfield Imaging). Eighteen linear facial distances were measured using Mirror 3D analysis (Canfield Imaging Systems). Difference between ethnicities was measured using analysis of variance with the Bonferroni/Dunn post hoc comparisons. Pearson correlation was employed for interrater reliability. All statistical analyses were carried out using SPSS version 21.0 (IBM Corp), with statistical significance set at P < .05. Results: Nasal projection (sn-prn) and columella length (sn-c) did not differ significantly between groups ( P = .9). Significant differences were seen between ethnic groups in nasal width (sbal-sbal [C-AA; P = .02]; ac-ac [C-AA; P = .00; H-AA; P = .04]; al-al [C-AA; P = .00; H-AA; P = .001]) and labial length (sn-ls [C-AA; P = .041]; sn-sto [C-AA; P = .005]; Cphs-Cphi L [C-AA; P = .013]; Cphs-Cphi R [C-AA; P = .015]). Interrater reliability was good to excellent and significantly correlated for all measures. Conclusions: African American infants exhibited wider noses and longer lips. No difference was noted in nasal projection or columella length, indicating that these structures should be corrected during the primary cleft lip and nasal repair for all patients and should not be deferred to secondary correction.

scholarly journals Key soil parameters affecting the survival of Panax notoginseng under continuous cropping

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wumei Xu ◽  
Fengyun Wu ◽  
Haoji Wang ◽  
Linyan Zhao ◽  
Xue Liu ◽  
...  
Keyword(s):  
Soil Ph ◽  
Pearson Correlation ◽  
Principal Component ◽  
Panax Notoginseng ◽  
Soil Parameters ◽  
Continuous Cropping ◽  
Poor Growth ◽  
Available N ◽  
The Poor ◽  
Replant Problem

AbstractNegative plant-soil feedbacks lead to the poor growth of Panax notoginseng (Sanqi), a well-known herb in Asia and has been used worldwide, under continuous cropping. However, the key soil parameters causing the replant problem are still unclear. Here we conducted a field experiment after 5-year continuous cropping. Sanqi seedlings were cultivated in 7 plots (1.5 m × 2 m), which were randomly assigned along a survival gradient. In total, 13 important soil parameters were measured to understand their relationship with Sanqi’s survival. Pearson correlation analysis showed that 6 soil parameters, including phosphatase, urease, cellulase, bacteria/fungi ratio, available N, and pH, were all correlated with Sanqi’s survival rate (P < 0.05). Principal component analysis (PCA) indicated that they explained 61% of the variances based on the first component, with soil pH being closely correlated with other parameters affecting Sanqi’s survival. The optimum pH for Sanqi growth is about 6.5, but the mean soil pH in the study area is 5.27 (4.86–5.68), therefore it is possible to ameliorate the poor growth of Sanqi by increasing soil pH. This study may also help to reduce the replant problem of other crops under continuous cropping since it is widespread in agricultural production.

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