Chief EditorT. Mohapatra
Print ISSN 0367-8245
Online ISSN 0976-058X
NAAS Rating 5.20
Relationship of inorganic potassium fractions to yield of cauliflower (Brassica oleracea var. Botrytis) and soil properties of light textured soils of Rangareddy district
First Online 07-02-2017|
Exploring the relationship among inorganic potassium fractions, yield and soil properties were important to know the best extractant for available K for cauliflower in the light textured soils of Rangareddy district. Surface soils in bulk were collected from thirty locations of Rangareddy district and pot culture experiment was carried out. Inorganic K fractions were analysed to evaluate the relative efficiency of extractants in determining the available K. Here, we have investigated the relationships among the soil properties, between soil properties and K uptake, between soil properties and yield, between K fractions and K uptake, between K fractions and yield. Organic carbon (r = 0.65**), available nitrogen (r = 0.60**) exhibited a significant positive correlation with NH4OAc (1N) extractable K. Available potassium extracted by NH4OAc showed a significant positive correlation with NaBPh4 (0.2 M) extractable K (r = 0.93**), 1M HNO3 (r = 0.55**) and also with citric acid extractable K (r = 0.67**). Among all the extractants 1N NH4OAc extractable K showed higher positive correlation with curd yield (r = 0.975**). It had a significant positive correlation with NaBPh4 (0.2 M) extractable K (r = 0.926**).
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