Halophilic microbial formulations for improving crop productivity and soil health under saline Vertisols of Gujarat

Q4 Agricultural and Biological Sciences Indian Journal of Agronomy Pub Date : 2024-05-05 DOI:10.59797/ija.v69i1.5483

Shrvan Kumar, A. Chinchmalatpure, Monika Shukla, D. David Camus, Bisweswar Gorain

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Abstract

A study was carried out during winter (rabi) seasons of 2018 and 2019 at research farm of ICAR-Central Soil Salinity Research Institute, Regional Research Station, Bharuch, Gujarat to find out the effect of various halophilic microbial formulations in combination of organic manure and chemical fertilizers on winter (rabi) wheat (Triticum aestivum L.) productivity under saline Vertisols. Experiment was conducted in a randomized block design (RBD) comprised of 5 treatments, viz. T1 , Un-inoculated + Vermicompost @2.5 t/ha + 100% RDF (recommended dose of fertilizers); T2 , Un-inoculated + Vermicompost @2.5 t/ha + 75% RDF; T3 , Vermicompost @2.5 t/ha + 75% RDF + Halo-Azo inoculation; T4 , Vermicompost @2.5 t/ha + 75% RDF + Halo-PSB inoculation; and T5 , Vermicompost @2.5 t/ha + 75% RDF + Mix of Halo-Azo and Halo-PSB inoculation, replicated thrice. Results showed that application of different halophilic microbial formulations like Halo-Azo (Azotobacter sp. and Bacillus sp.) and Halo-PSB (consortia of Eneterobacter and Brevibacterium sp.) with vermicompost @2.5 t/ha + 75% RDF (recommended dose of fertilizers), provided at par yield with full dose (120 : 60 : 00; N : P : K kg/ha) of fertilizers, thus able to reduce 25% chemical fertilizer dose. Halo-Azo formulation performed better for improving crop yield as compared to Halo-PSB formulation. Combined application of Halo-Azo and Halo-PSB with vermicompost @2.5 t/ha and 75% RDF performed the best and provided significantly higher grain yield (2.75 t/ha) as compared to other treatments. Single and combined application of Halo-Azo and Halo-PSB with vermicompost @2.5 t/ha and 75% RDF also improved soil health parameters and significant results, i.e. declined EC (2.46 dS/m) and pH (7.33), improved organic carbon (0.69%) and nutrient availability (available N: 299.8 kg/ha and P: 28.7 kg/ha) were obtained. Results showed that integration of halophilic microbial formulations with organics and chemical fertilizers was able to improve wheat yield up to 15% than conventional farming under saline Vertisols of Gujarat.

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嗜盐微生物制剂用于提高古吉拉特邦盐碱地中的作物产量和土壤健康水平

在古吉拉特邦巴鲁克地区研究站的ICAR-中央土壤盐分研究所研究农场，于2018年和2019年冬季（油菜花）季节开展了一项研究，以找出各种嗜卤微生物配方与有机肥料和化肥相结合对盐碱地椎质土壤下冬小麦（Triticum aestivum L.）产量的影响。试验采用随机区组设计（RBD），由 5 个处理组成，即 T1，未接种+蛭石堆肥 @2.5 吨/公顷+100% RDF（推荐肥料剂量）；T2，未接种+蛭石堆肥 @2.5 t/ha + 75% RDF；T3，蛭石堆肥 @2.5 t/ha + 75% RDF + Halo-Azo接种；T4，蛭石堆肥 @2.5 t/ha + 75% RDF + Halo-PSB接种；T5，蛭石堆肥 @2.5 t/ha + 75% RDF + Halo-Azo和Halo-PSB混合接种，重复三次。结果表明，施用不同的嗜卤微生物配方，如 Halo-Azo（偶氮菌和芽孢杆菌）和 Halo-PSB（Eneterobacter 和 Brevibacterium 复合菌群）与蛭肥 @2.5 吨/公顷 + 75% RDF（化肥推荐剂量），产量与全剂量化肥（120 : 60 : 00；氮 : 磷 : 千克/公顷）相当，因此能够减少 25% 的化肥剂量。与 Halo-PSB 配方相比，Halo-Azo 配方能更好地提高作物产量。Halo-Azo 和 Halo-PSB与蛭石（2.5 吨/公顷）和 75% RDF 的联合施用效果最佳，与其他处理相比，粮食产量（2.75 吨/公顷）显著提高。单一或联合施用 Halo-Azo 和 Halo-PSB（蛭肥 @2.5 吨/公顷和 75% RDF）也改善了土壤健康参数，并取得了显著效果，即降低了 EC 值（2.46 dS/m）和 pH 值（7.33），提高了有机碳（0.69%）和养分供应量（可利用氮：299.8 千克/公顷和磷：28.7 千克/公顷）。结果表明，在古吉拉特邦的盐碱地中，嗜卤微生物配方与有机肥和化肥的结合比传统耕作能提高小麦产量达 15%。

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来源期刊

Indian Journal of Agronomy Agricultural and Biological Sciences-Agronomy and Crop Science

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0.50

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期刊介绍： Indian Journal of Agronomy welcomes concise articles presenting original research data based on field experiments on all aspects of agronomy in different crops and related cropping systems. • The journal publishes only full length comprehensive articles based on new approaches/findings in English only. • Review articles are also considered but these are normally solicited by Editorial Board. However, the authors who wish to contribute a review on their own based on their standing in the relevant field may contact the Secretary or Chief Editor with a broad outline before submitting the manuscript.