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CALCIUM, MAGNESIUM AND POTASSIUM STATUS OF SOUTHERN DRY ZONE OF KARNATAKA AND THE EFFECT OF VARYING CATIONIC RATIOS ON YIELD OF FINGER MILLET

KrishiKosh

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Title CALCIUM, MAGNESIUM AND POTASSIUM STATUS OF SOUTHERN DRY ZONE OF KARNATAKA AND THE EFFECT OF VARYING CATIONIC RATIOS ON YIELD OF FINGER MILLET
 
Creator MOHAMMAD AKBAR, ANSARI
 
Contributor Sudhir, K
 
Subject sowing, vegetables, oils, grain legumes, storage, diseases, seed treatment, insecticides, pesticides, biological interaction
 
Description An investigation was carried out to know the status of calcium, magnesium
and potassium in soils of southern dry zone of Karnataka and also to know the effect of
varying levels and ratios of calcium, magnesium and potassium on the yield and uptake
of nutrients by finger millet under pot culture condition at Gandhi Krishi Vignana
Kendra, University of Agricultural Sciences, Bangalore,
Fifty surface (0-15 cm) soil samples were collected from the fields under major
cropping systems in Chamarajanagara and Mandya districts of southern dry zone of
Karnataka and were analysed for pH, and different forms of calcium, magnesium and
potassium.
Finger millet was grown by applying calcium, magnesium and potassium at
different levels using their chloride salts i.e.0 (Ca0), 2200(Ca1), and 4400 (Ca2) kg
CaCl2 /ha, 0 (Mg0), 940 (Mg1), and 1880 (Mg2) kg MgCl2 /ha and 0 (K0), 304 (K1), and
608 (K2) kg KCl /ha.
Chamarajanagara soils contained relatively higher amounts of all the forms of
calcium, magnesium and potassium as compared to Mandya soils irrespective of
cropping systems. The Ca: Mg and Ca: K ratios were much wider in Chamarajanagara
soils than in Mandya soils, while there was not much variation in Mg: K ratios of the
soils of the two districts.
The results of pot experiment revealed that the grain yield was highest in the
case of Ca1-Mg0-K2. Calcium at Ca2 and magnesium at both levels (Mg1 and Mg2) had
a negative effect on grain yield. The interaction of Ca x Mg in terms of plant height,
number of fingers per pot, grain yield and straw yield indicated that calcium at its first
level alone had a positive effect on both growth and yield parameters of the crop at
different levels of magnesium; The interaction of Ca x K in terms of plant height,
number of fingers per pot, grain yield and straw yield also indicated that only lower
level of (Ca1) level resulted in an increase in all the growth and yield parameters at
different levels of potassium and potassium at both the levels increased all the growth
and yield parameters .The interaction of Mg x K in terms of plant height, number of
fingers per pot, grain yield and straw yield indicated significant positive effect of
potassium at all levels of magnesium. Interactions were of similar trend even in respect
of uptake of the three nutrients.
 
Date 2017-01-20T12:35:33Z
2017-01-20T12:35:33Z
2010-11
 
Type Thesis
 
Identifier TH-9582
http://krishikosh.egranth.ac.in/handle/1/97340
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore