National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A pot culture experiment was conducted in Agricultural College, Bapatla, Andhra Pradesh to study the “comparative efficiency of different organic acids spraying in groundnut on available nutrient status of calcareous soils" during kharif season of 2015-16. The experimental soil was Calcareous (collected from Vertisol profile), low in available nitrogen, medium in available phosphorus and high in available potassium. All the micronutrients except iron were sufficient in the soil with values above their critical limits. The treatments comprised of control (T1); FeSO4.7H2O @ 0.25% (T2); citric acid @ 0.25% (T3); acetic acid @ 0.25% (T4); oxalic acid @ 0.125% (T5); ascorbic acid @ 0.25% (T6); hydroxyl amine hydrochloride (T7) were replicated thrice in completely randomized design (CRD) with three replications. Foliar application of organic acids was applied to the respective pots at peak flowering, peg penetration and pod formation stage of the crop growth. Similarly, Foliar application of organic acids showed non-significant difference in N, P, K and significantly increased the S and Fe contents in soil. Availability of N, K nutrients was maximum in treatments treated with ascorbic acid @ 0.25%, P was higher in treatments received oxalic acid @ 0.125% and S, Fe contents in soil were higher in treatment supplied with FeSO4.7H2O @ 0.25% were found significantly superior to rest of the treatments.
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