EVALUASI TERHADAP PERUBAHAN STATUS BEBERAPA HARA TANAH SETELAH 10 TAHUN DI BUKIT GAJABUIH PADANG

This experiment is about the evaluation of characteristic alteration of soil nutrients after ten years at tropical rain forest Bukit Gajabuih Gunung Gadut Padang. This experiment was conducted from November 2006 - April 2007. This experiment is arranged based on anova design with three treatments which was based on three great groups of land ( oxic-dystroudept (eutriccc, aquic), oxic-dystroudept (xanthic), oxic-typic-dystroudept (xanthic)). The purpose of this experiment was to study the alteration of soil fertility characteristics (K, Ca, Mg, Na, P and C/N) in ten years period (1995-2005) in tropical rain forest at Bukit Gajabuih Padang, to observe vegetation variety alteration, and the relationship with the land fertility characteristics. From the experiment was found that nutrient status of the soils altered after ten years (*1995-2005). Available P content increased about 77%, exchangeable Na and K increased 86,04% and 53.65%, respectively. On the other hand, exchangeable Mg and Ca decreased 3,05% and 65,88%, respectively. Land C/N ratio decreased about 21,39%. The experimental plot had low soil pH.Key Words: tropical rain forest, soil nutrient status

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Characteristics and Stocks of Soil Nutrient under Various Land Use Types in a Super Wet Tropical Rain Forest Padang, West Sumatra

Journal of Tropical Soils ◽

10.5400/jts.2010.v15i1.55-62 ◽

2018 ◽

Vol 15 (1) ◽

pp. 55

Author(s):

Hermansah Hermansah ◽

Nofrita Sendi ◽

Yulnafatmawita Yulnafatmawita ◽

Tsugiyuki Matsunaga ◽

Toshiyuki Wakatsuki ◽

...

Keyword(s):

Land Use ◽

Rain Forest ◽

Tropical Rain Forest ◽

Soil Depth ◽

Soil Nutrient ◽

Nutrient Status ◽

Land Use Type ◽

Soil Nutrient Status ◽

Land Use Types ◽

West Sumatra

In order to clarify the characteristics and stocks of soil nutrient under various land use types in a super wet tropical rain forest in Padang, West Sumatera. We investigated the nutrient characteristics of the several samples of soils under different land use such as cacao plantation (CP), cinnamon plantation (CMP), mixed garden (MG), and primary forest (PF) in Gadut Mountain, Padang, West Sumatra. The soil nutrient characteristics varied among the different land use types. The range of nutrient characteristics under four land use type were 4.60 – 7.01% and 0.4 – 0.60 % for total carbon and total nitrogen and were 9.80 – 24.59, 0.68 – 2.07 and 0.30 – 0.8 mol (+) kg-1 for Ca, Mg and K, respectively. The highest content of soil nutrient status was found under MG, while the lowest soil nutrient status found at PF. This result indicated that the MG with various vegetation types might contribute in enriching the organic matter in soil. The soil nutrient content such as TN, exchangeable Ca, Mg and K tended to decrease with soil depth of each land use type. However, the sodium (Na) content in soil tended to increase within the soil depth. These were presumably due to evaporation of Na at surface soil within the study area was low. These study results showed that spatially the nutrient properties of soil were closely related to the land use type and management practices. It was suggested that the nutrient characteristics of soils under various land use types in a super wet tropical rain forest region, in Gadut Mountain, Padang West Sumatra were significantly affected by the land use types and land coverage.

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Soil Nutrient Status of Brahmaputra Floodplain Area in Tangail Sadar Upazila for Agricultural Uses

Journal of Environmental Science and Natural Resources ◽

10.3329/jesnr.v8i2.26856 ◽

2016 ◽

Vol 8 (2) ◽

pp. 11-14

Author(s):

MAM Hossen ◽

SA Lira ◽

MY Mia ◽

AKMM Rahman

Keyword(s):

Soil Nutrient ◽

Nutrient Status ◽

Available Phosphorus ◽

Soil Nutrient Status ◽

Fe Content ◽

P Content ◽

Zn Content ◽

Floodplain Area ◽

Very High ◽

Brahmaputra Floodplain

Soil samples from high land, medium high land, medium low land and low land of Brahmaputra Floodplain area showed that pH of the soils were slightly acidic; organic matter (OM) content was medium; total nitrogen (N), available potassium (K) and boron (B) content were low; available phosphorus (P) content was very low; available sulfur (S) and calcium (Ca) content were medium to very high; magnesium (Mg) and zinc (Zn) content were low to optimum; copper (Cu), manganese (Mn) and iron (Fe) content were very high suggesting the fact that soils of this area is moderately suitable for agricultural uses.J. Environ. Sci. & Natural Resources, 8(2): 11-14 2015

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Investigation of soil properties and nutrients in agricultural practiced land in Tangail, Bangladesh

International Journal of Agricultural Research Innovation and Technology ◽

10.3329/ijarit.v10i2.51581 ◽

2021 ◽

Vol 10 (2) ◽

pp. 84-90

Author(s):

MS Islam ◽

T Nusrat ◽

MR Jamil ◽

F Yesmin ◽

MH Kabir ◽

...

Keyword(s):

Soil Nutrients ◽

Soil Nutrient ◽

Nutrient Status ◽

Nutrient Concentrations ◽

Soil Parameters ◽

Available Phosphorus ◽

Optimum Level ◽

Soil Nutrient Status ◽

Total N ◽

Content Status

The study investigated on soil nutrients in agriculture practiced high, medium high, medium low and low land at Kalihati upazila of Tangail district during October 2017 to June 2018. Thirty soil samples were collected from different land types at the study area and analyzed at Soil Resource Development Institute (SRDI) to determine soil nutrient status. The soil parameters under investigation included pH, organic matter (OM), total nitrogen (N), available phosphorus (P), available zinc (Zn), available iron (Fe), available manganese (Mn), available boron (B), exchangeable potassium (K), exchangeable calcium (Ca) and exchangeable magnesium (Mg). Results indicated that many of the soil nutrient levels decreased such as pH (5.63 to 6.40), P (3.50 to 23.20 μg g-1), Zn (3.27 to 3.60 μg g-1), Mn (21.12 to 57.90 μg g-1), B (0.17 to 0.60 μg g-1), K (0.18 to 0.30 meq 100g-1) and Ca (5.75 to 9.10 meq 100g-1). On the contrary, the average content of OM (2.30 to 1.40%), Fe (248.22 to 161.10 μg g-1) and Mg (2.07 to 1.80 meq 100g-1) were increased. Total N content status did not change much (0.12%). Soil nutrients like those that available Zn, Fe, Mn and Mg contents were found above optimum level (very high) but OM and N status found below optimum level (low, very low and medium). Nutrient concentrations below optimum levels may limit crop yield. Updated knowledge about soil nutrient status needs to be provided for the farmers so that they can use necessary amount of fertilizers and avoid applying excess amount of fertilizers. Int. J. Agril. Res. Innov. Tech. 10(2): 84-90, December 2020

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Soil faunal biodiversity and nutrient status in silvopastoral systems of Indian desert

Environmental Conservation ◽

10.1017/s0376892905002109 ◽

2005 ◽

Vol 32 (2) ◽

pp. 178-188 ◽

Cited By ~ 7

Author(s):

G. TRIPATHI ◽

S. RAM ◽

B.M. SHARMA ◽

G. SINGH

Keyword(s):

Soil Nutrients ◽

Soil Nutrient ◽

Nutrient Status ◽

Tree Canopy ◽

Soil Arthropods ◽

Silvopastoral Systems ◽

Soil Nutrient Status ◽

Positive Role ◽

Soil Biodiversity ◽

Soil Arthropod

Decrease in productivity of pastureland is a common problem in dry areas and needs to be enhanced through conservation and management of soil biodiversity and available plant resources. Diversity and population dynamics of soil arthropods, and soil nutrients were studied in different silvopastoral (tree-integrated grassland) systems for effective management and enhancement of grassland productivity. The most prominent combinations of trees and grasses in silvopastoral systems of the selected sites were Prosopis cineraria with Cenchrus ciliaris and C. biflorus (PC), Acacia nilotica with Elusine compressa and C. ciliaris (AN), Zizyphus nummularia with C. ciliaris and E. compressa (ZN), Capparis decidua with C. biflorus and Digitaria marginatus (CD) and A. senegal with C. ciliaris and D. marginatus (AS). Pure grass blocks outside tree canopy were selected as control plots. Acari, Myriapoda, Coleoptera, Isoptera, Collembola and other soil arthropods were the major soil faunal groups. Relative densities of Acari, Myriapoda and other arthropods were highest in silvopastoral systems and those of Coleoptera, Isoptera and Collembola were highest in pure grass plots. Variations in soil arthropod populations in response to rainfall, soil water content and soil temperature indicated greater sensitivity of these groups to environmental factors. The highest densities and negative relative tree effect (RTE) values of Acari, Myriapoda and other soil arthropods in the ZN, Coleoptera in the AS, Isoptera in the CD and Collembola in the AN systems indicated that these soil arthropods preferred the silvopastoral systems involved. Seasonal variations in soil organic matter and available NH4-N, NO3-N and PO4-P were similar to those of soil arthropods. The concentrations of soil nutrients were highest in the ZN system, which had the highest densities of soil arthropods. The other systems with high populations and soil nutrient status were the CD and AS. Silvopastoral systems based on Z. nummularia, C. decidua and A. senegal promoted soil arthropod populations and enhanced soil nutrient status, highlighting the positive role of tree presence and the need for proper management to promote soil biodiversity, nutrient cycling and sustained production in a fragile environment.

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