Relationship of inorganic potassium fractions to yield of cauliflower (Brassica oleracea var. Botrytis) and soil properties of light textured soils of Rangareddy district

Abstract

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 NH 4 OAc (1N) extractable K. Available potassium extracted by NH 4 OAc showed a significant positive correlation with NaBPh 4 (0.2 M) extractable K (r = 0.93 ** ), 1M HNO 3 (r = 0.55 ** ) and also with citric acid extractable K (r = 0.67 ** ). Among all the extractants 1N NH 4 OAc extractable K showed higher positive correlation with curd yield (r = 0.975 ** ). It had a significant positive correlation with NaBPh 4 (0.2 M) extractable K (r = 0.926 ** ).

Effects of different tillage practices and cropping systems on soil fertility and soil properties in maize

“…However, cropping structures had minimal impact on EC. Cation change ability (CEC) changed into significantly higher in PB and ZT-flat tillage structures as compared to traditional tillage, which turned into attributed to retention of organic count number residues and improved transformation of clay content material and this is regular with the findings of Kalyani (2012) [5] . Soil natural carbon (SOC) ranges expanded in PB and ZT-flat systems compared to preliminary measurements in 2008.…”