Vol. 6 (2) : March-April 2015 issue
Green Farming Vol. 6 (2) : 431-433 ; March-April, 2015
Quantification of nutrient addition through maize root biomass in superimposed treatments of long term fertilizer experiment
MALLIKARJUNA LINGAPPA1*, R.C. GOWDA2, B. SHIVANNA3 and K. SUDHIR4
Deptt. of Soil Science and Agril. Chemistry, University of Agric. Sciences, GKVK, Bengaluru - 560 065 (Karnataka)
Designation : 1,3Ph. D. Scholar *(mallu.maski@gmail.com), 2,4Professor
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. : P-1862
Total Pages : 3
Received : 12 August 2014
Revised accepted : 24 February 2015
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Citation :
MALLIKARJUNA LINGAPPA, R.C. GOWDA, B. SHIVANNA and K. SUDHIR. 2015. Quantification of nutrient addition through maize root biomass in superimposed treatments of long term fertilizer experiment. Green Farming Vol. 6 (2) : 431-433 ; March-April, 2015
ABSTRACT
A study was conducted to quantify the amount of nutrient addition through maize root biomass in selected treatments of All India coordinated Research Project on long term fertilizer experimental plots, located at the Zonal Agric. Res. Station, GKVK, University of Agric. Sciences, Bengaluru. The objectives of the study were to quantify maize root and shoot biomass, nutrient content and also to study the chemical properties of soil after the harvest of maize crop. The results revealed that there was significant differences among the treatments in terms of maize root biomass addition with maximum of 14.24 q ha-1 and highest grain yield of 75.77 q ha-1 was recorded in T4S3 (150% NPK+10 tons FYM/ha). Highest nitrogen content (0.79%) in roots of maize was recorded in treatment T4S3 (150% NPK+10 t FYM/ha). Significantly lowest root N content (0.56%) in maize was recorded in T1S1 (100% N). Similar trend was followed with respect to phosphorous and potassium. Highest phosphorous content (0.19%) in maize root was recorded in treatment T4S3 (150% NPK+10 t FYM/ha) and lowest (0.05%) was recorded in T1S1 (100% N). Highest potassium content (1.31%) in maize roots was recorded in treatment T4S3 and lowest root potassium content (0.62%) was recorded in T1S1 (100% N). The treatments which received lime showed higher calcium content (0.40%) in roots compared to non-limed treatments. Application of only inorganic fertilizer recorded lower micronutrient content compared to combination of inorganic fertilizer in with FYM recorded highest values.
Key words :
Inorganic fertilizer, Lime, Maize, Nutrient content, Root biomass.
