Effect of urea, bio-fertilizers and their interaction on the growth, yield and yield attributes of Cyamopsis Tetragonoloba

Excessive feldspar mining is becoming an alarming issue due to the untreated mine spoil. For the success in the remediation of mine spoil, selection of plant species is an important factor. Therefore being a nitrogen fixer, legumes can be an alternative and are needed to be broadcasted for the rehabilitation of mined lands. In this context guar (Cyamopsis tetragonoloba L.) can be preferred which excels in enhancing soil fertility and is already in cultivation but not experimented with feldspar due to not establishing its rhizosphere fertility. In this study to enhance the fertility status and biological activities of feldspar mine spoil plantation of guar is done with the inoculation of microbes Azotobacter Azospirillum and Glomus mosseae (AMF) and organic and inorganic amendments. This attempt has successfully enhanced the rhizosphere enzymes at the rate of 10-65% maximum with AMF+ OM+ NPK50% (T16), nutrient uptake 10-70% maximum with Azotobacter+ OM+ NPK 50% (T7) and plant metabolites 10-51% also observed maximum with T7 over the uninoculated control. Guar has also shown positive response towards the applied treatment and grown well. Based on the results it can be inferred that guar can tolerate detrimental effects of feldspar mining. Hence, it is concluded that guar can be a potential crop to restore soil health of feldspar mined land for sustainable development.

Section: Growth Parameterssupporting

confidence: 87%

Guar (Cyamopsis tetragonoloba L.): A Potential Candidate for the Rehabilitation of Feldspar Mine Spoil Amended with Bioinoculants

Junia

Kasana

Jain

et al. 2020

“…They also reported the higher amount of chlorophyll in mustard plants treated with B. megaterium (mj1212) as compared to untreated plants. Similarly, Gul et al (2019) reported significant increase of chlorophyll content along with other growth parameters in a combined treatment of urea and Rhizobium sp. in Cyamopsis tetragonoloba.…”

Section: Measurement Of Total Chlorophyllmentioning

confidence: 74%

Extraction of Indole-3-acetic Acid from Plant Growth Promoting Rhizobacteria of Bamboo Rhizosphere and Its Effect on Biosynthesis of Chlorophyll in Bamboo Seedlings

Maya

Gauchan

Khanal

et al. 2020

Background: Indole-3-acetic acid (IAA), a principal phytohormone, controls several crucial physiological processes of plants. It ameliorates plant growth by stimulating cell elongation, root initiation, seed germination and seedling growth. Alteration of IAA level by plant growth promoting rhizobacteria leads to varied impacts on plant growth and development. Methods: Soil samples were collected from bamboo (Bambusa tulda, B. nutans subsp. cupulata, B. balcooa and Dendrocalamus strictus) rhizosphere. Altogether five bacterial isolates were screened by serial dilution method and subjected to biochemical analysis. The isolate BUX1 with high IAA production capacity was optimized for IAA production. IAA was partially purified and quantified from the bacterial extract by thin layer chromatography (TLC). The influence of extracted bacterial IAA on chlorophyll biosynthesis in bamboo seedlings of B. tulda was compared with uninoculated control plants. Results: Biochemical analysis revealed that all the isolates belonged to genus Bacillus which were found capable of producing IAA. During optimization, BUX1 isolate produced 99.13 µg ml-1 of IAA at 37°C, pH 7, 3 mg l-1 concentration of L-tryptophan and 150 rpm agitation rate after 192 hour of incubation. The Rf value of the bacterial IAA during TLC was identical to that of standard IAA (0.425) indicating that IAA was present in crude extract of Bacillus (BUX1). The influence of bacterial IAA on chlorophyll biosynthesis in bamboo seedlings was significant in comparison to uninoculated plants. Therefore, this isolate could be a prospective candidate to be employed as biofertilizer.

“…Biofertilizers help in making the soil environment rich in all kinds of micro-and macro-nutrients via number of processes such as nitrogen fixation, mineralization as phosphate and potassium solubilization, release of plant growth regulating substances, production of antibiotics and biodegradation of organic matter in the soil (Sinha et al, 2014;Sivakumar et al, 2013) which provide efficient nutrient uptake and help in improving plant tolerance towards drought and moisture stress (Abdelraouf et al 2013). Sometimes combine treatment of urea and Rhizobium resulted in maximum plant growth as seen in cluster bean (Gul et al 2019). In India Rhizobium was the first microbial inoculant, which was introduced as biofertilizer in the beginning of the seventies with the introduction of soybean into the country.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Shelf Life and Quality of Biofertilizers using Tricalcium Phosphate as an Anticaking Agent and Aluminium Silicate as the Inert Carrier

Matura¹,

Bahuguna²,

Bhandari³

et al. 2021

Background: Bio-fertilizers are the substances which contain living microorganisms, when applied to soil, seeds and plant root these fertilizers increases soil fertility and promote growth of the plant. Biofertilizers help plants to utilize important mineral resources, phosphorous and nitrogen. Microorganisms like Rhizobacteria, fungi and algae which provide nutrient to the soil and which are produced commercially are known as biofertilizers. The microorganisms which present in biofertilizers are Rhizobium species, Pseudomonas species and Azospirillum species etc. These biofertilizers have potential to replace conventional chemical fertilizers. The quality of biofertilizers is utmost important as they have to be used by farmers and should work well when applied to the soil. It should not form clumps after preparation. In this study, anticaking property provided by tricalcium phosphate (TCP) to individual biofertilizer containing Pseudomonas, Rhizobium and Azospirillum respectively (each separately) was studied. Methods: In our study, we have used serial dilution and direct count method (CFU) for checking viability of live microorganism for 15, 30 and 90 days duration in respective biofertilizers in our laboratory. Different percentage viz 5%, 10%, 15% and 20% of tricalcium phosphate (TCP) was used in addition to aluminium silicate as an inert carrier.Conclusion: Our study has validated that all percentage (5%, 10%, 15% and 20%) of tricalcium phosphate (TCP) is reducing clump formation as compared to control with no TCP added. On the basis of plate count method (CFU result) 10% TCP is found to be optimum to be used as an anticaking agent for biofertilizer containing Pseudomonas, Rhizobium and Azospirillum respectively.