Status of Sulphur, Zinc and Boron in Onion Growing Soils of Dharwad Taluk, Karnataka, India
M. Sujaina *
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad, Karnataka, India.
K. K. Math
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad, Karnataka, India.
S. M. Hiremath
Department of Horticulture, University of Agricultural Sciences, Dharwad, Karnataka, India.
Manjunatha Hebbara
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad, Karnataka, India.
Kiran K. Mirajkar
Department of Biochemistry, University of Agricultural Sciences, Dharwad, Karnataka, India.
T. V. Sowjanya
Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Dharwad, Karnataka, India.
*Author to whom correspondence should be addressed.
Abstract
Survey was undertaken during rabi 2021-22, to study the sulphur, zinc and boron status in onion growing fields in selected villages of Dharwad taluk, Karnataka. One hundred surface soil samples were collected from selected ten villages of Dharwad taluk using GPS. The results revealed that soils were neutral to alkaline in reaction, low in total soluble salts, low to high organic carbon content, low in available nitrogen, medium in available phosphorus, potassium and sulphur and 49.00 and 77.00 per cent of the soils were deficient in DTPA extractable zinc and hot water soluble boron, respectively.
Keywords: Onion, sulphur, zinc, boron