Effect of Organic Nutrient Sources on Economics, Soil Micro Nutrient Status and Microbial Growth of Ragi under Guni Method of Cultivation
H. S. Latha *
AICRP for Dryland Agriculture, University of Agricultural Sciences, GKVK, Bangalore, Karnataka, India.
Nunavath Umilsingh
Department of Agronomy, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, India.
Jayanthi. T
Department of Soil Science & Agricultural Chemistry, University of Agricultural Sciences, GKVK, Bangalore, Karnataka, India.
V. Venkatachalapathi
Department of Agronomy, Agricultural Research Station (ARS), University of Agricultural Sciences, Chintamani, Karnataka, India.
Jakku Prasanna
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad, Telangana, India.
D. V. Naveen
Department of Soil Science & Agricultural Chemistry, College of Sericulture, Chintamani, Karnataka, India.
*Author to whom correspondence should be addressed.
Abstract
A field experiment was conducted during the kharif-2019 at the farmers field of Mylandahalli in Chikkaballapura distict of Karnataka, to study the effect of organic nutrient sources on soil micro nutrient status, microbial count and economics of finger millet under guni method. The trial was framed out in randomized blocked design with twelve treatments reproduced thrice. The results of different organic nutrient sources were showed that supplement of sericulture waste compost (SWC) @ 50% N eq. + Enriched biodigested liquid manure (EBDLM) @ 50% N eq. ha-1 + panchagavya (PG) spray @ 3% (T9) had a significant effect on micro nutrient status in soil and their values were statistically higher than all the other treatments. The findings of study reported that supplement of sericulture waste compost (SWC) @ 50% N eq. + Enriched biodigested liquid manure (EBDLM) @ 50% N eq. ha-1 + panchagavya (PG) spray @ 3% (T9) recorded significantly higher Diethylenetriamine pentaacetic acid (DTPA) extractable iron, zinc, manganese and copper in soil. Likewise, the same treatment had recorded significantly superior in population of bacteria (49.96 colony forming units (CFU) x 106 g-1), fungi (27.36 CFU x 103 g-1) and actinomycetes (14.44 CFU x 103 g-1) were noticed compared to others and found to be highest economic returns during cropping period of kharif 2019.
Keywords: Iron, zinc, copper, manganese, bacteria, fungi, actinomycetes