National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Seven typical pedons from Gundlasamudram, Vallaipalem, Peddaalavalapadu, Vijayalaxmipuram, Rajupalem, Gangapalem and Bakkireddipalem villages representing the major land forms in the central parts of Prakasam district of Andhra Pradesh viz., uplands and plains, developed from granite-gneiss parent material under varying land use were studied for their morphological characteristics, physical and physico-chemical properties, soil genesis and nutrient status. Soils were shallow to very deep, slightly alkaline to alkali (pH 7.63 to 10.48) in reaction, non-saline and had iso-hyperthermic temperature and ustic soil moisture regimes. Texture, organic carbon, CEC and base saturation in the profiles ranged from sandy loam to clay, 0.14 to 0.72 per cent, 9.14 to 53.85 cmol (p+) kg-1 and 61.95 to 92.78 per cent, respectively. Soils were low in available nitrogen, medium in available phosphorus, medium to high in available potassium and high in available sulphur (except only one sample). However, the soils were sufficient in DTPA-extractable Zn in surface horizons (except in the pedons 2 and 4 and in the subsurface horizons of pedon 1) and sufficient in DTPA-extractable Fe (except in the second horizon of pedon 1) Cu and Mn. Pedons 3 and 6 were grouped under Entisols due to absence of sub-surface diagnostic horizon and were classified as Lithic Ustorthent, whereas pedons 1, 4, 5 and 7 were placed under Inceptisols due to presence of cambic (Bw) sub-surface diagnostic horizon and classified as Typic Haplustepts. Due to the presence of vertic features like slickensides, pressurefaces, cracks and presence of more than 30 % clay in all the horizons, the pedon 2 was grouped under Vertisols and classified as Typic Haplusterts. Recommendations were made based on the soil fertility for better crop production without deteriorating the soil health.
Citations |
 |
 |
 |
 |
