Seed Yield, Seed Attributes and Economics of Alfalfa Seed Production as Influenced by Integrated Nutrient Management During kharif Season under Southern Dry Zone of Karnataka, India
Nagappa Desai, B. Mamatha, M. S. Anitha, Roopa B. Patil
Journal of Experimental Agriculture International · pp. 955–963 · Published 4 Nov 2024
10.9734/jeai/2024/v46i103028Abstract
The field experiment was carried out at the farm field of Krishi Vigyan Kendra, Konehalli, Tiptur taluk, Tumkuru, Karnataka during Kharif season of 2017-18 to examine the effect of integrated nutrient management on seed yield, seed attributes and net benefit of alfalfa. The experiment was laid out Randomized complete block design (RCBD) comprising nine treatments viz T1 : RDF (25:50:25 kg NPK/ha + 10 t/ha FYM); T2 : 75% RDF + 25% N through FYM; T3 :75% RDF + 25% N through Vermicompost; T4 :75% RDF + 25% N through Poultry manure; T5 : 50% RDF + 25% N through FYM + Rhizobium + PSB+VAM ; T6 :50% RDF + 25% N through Vermicompost+ Rhizobium + PSB+VAM; T7 :50% RDF + 25% N through Poultry manure+ Rhizobium + PSB+VAM ;T8 : RDF + Rhizobium + PSB+VAM ;T9 : 10 t/ha FYM + 100% N through FYM and replicated four times. The results of experiments revealed that the plants supplied with of 50 % RDF + 25 % N through vermicompost + Rhizobium + PSB + VAM shown highest fresh herb yield at first harvest (160.65 q/ha), herb yield after harvest of seeds (187.50q/ha), 50% flowering (35.00 days), pod initiation (48.50days), pod maturation (73.05 days), while, lower fresh herb yield, pod initiation, pod maturation were recorded when 10 t/ha FYM + 100 % N through FYM was applied. The maximum pod (56.78 %), number of pods (228.75/plant), pod yield (19.90/plant), pod length (6.25 mm), pod weight (87.61 mg), seed set (56.50 %), number of seeds (5.50/pod), test weight (3.33g), seed yield per hectare (223.38kg/ha) and highest net return per hectare were recorded with 50 % RDF + 25 % N through vermicompost + Rhizobium + PSB + VAM. while, poor performance with regard to these parameter were recorded with application of 10 t/ha FYM + 100 % N through FYM. Therefore, application of 50 % RDF + 25 % N through vermicompost + Rhizobium + PSB + VAMmay be recommended for commercial seed productionin Alfalfa during kharif season under southern dry zone of Karnataka.
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