Assessment of Spatial Variability of Soil Nutrient Status in Rice Ecosystem Using Nutrient Index in Anaimalai Block, Coimbatore

Theresa, K.; Shanmugasundaram, R.; Kennedy, J.S.

doi:10.20546/ijcmas.2019.808.253

Cited by 1 publication

(1 citation statement)

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“…DTPA-Zn was adequate and while Mn, Zn, and Cu were high. Similar studies were carried out by Sellamuthu et al (2015), Theresa et al (2019), andMuthumanickam (2020) for assessing the nutrient index values in Tiruchirapalli District, rice ecosystem of Anaimalai Block, and vegetable grown soils of Horticultural College and Research Institute, Periyakulam respectively. The thematic maps on pH, EC, organic carbon, and available nutrient status were generated by showing appropriate legends for soil fertility parameters (Figures 4-6).…”

Section: Nutrient Index Valuessupporting

confidence: 58%

Spatial variability assessment in Central Farm Soils of Horticultural College and Research Institute, Periyakulam, Tamil Nadu using GIS techniques

Sellamuthu¹,

Kumaraperumal²,

Malathi³

2021

MAJ

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A total number of 201 surface soil samples were collected encompassing the fields of Central Farm of Horticultural College and Research Institute, Periyakulam, Tamil Nadu. The GPS data (Latitude ºN and Longitude ºE) were recorded for each sampling site by using GPS-Garmin eTrex Vista HCX model. Field maps were collected and field number wise digitization was done. Soil samples were processed and anlaysed for soil physic-chemical and fertility parameters. Results indicated that soil samples were neutral to alkaline in reaction, non saline, and slightly calcareous to non calcareous in nature. Soil fertility groupings under percent category indicated that the soils were medium in soil organic carbon, low in available nitrogen, medium to high in available phosphorus, medium to high in available potassium, and low in available sulphur. With respect to DTPA extractable micronutrients, Fe, Zn, Mn and Cu were found to dominate by low to medium, low, high, medium to high categories, respectively. HWS-Boron was also recorded under the high category. The nutrient index values of the samples indicated a high status for organic carbon, available P and K, while medium for available N and adequate for available sulphur. With respect to micro nutrients, nutrient index values indicated that adequate for DTPA-Zn and very high for DTPA-Fe, Mn, Cu, and HWS-B. Thematic maps generated on the individual parameters depicted the spatial variability of parameters in the Central Farm of Horticultural College and Research Institute, Periyakulam. In the identified areas of poor fertility status, nutrient deficiency has to be eliminated by the application of organic and /or inorganic sources to maintain sustainable soil fertility status. Soil test-based fertilizer recommendations and micronutrients are to be followed to mitigate nutrient deficiencies and achieve sustained crop production and soil fertility.

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Section: Nutrient Index Valuessupporting

confidence: 58%