Seasonal Variation in Microbial Communities in Rhizosphere and Non-Rhizosphere soil of Different Fruit Tree Species in Semiarid Irrigated Conditions of Haryana

The present study was undertaken to analyze seasonal variations in microbial communities in different fruit tree orchards (mango, guava, ber, bael, jamun, aonla and sweet orange) during summer, rainy and winter season of 2018-19 under semiarid irrigated ecosystem. In rhizosphere and non-rhizosphere, maximum TBC, PSB and nitrogen fixers were found in mango orchard during summer and rainy season while maximum fungal count in jamun orchard during all the seasons. Maximum actinomycete was counted in guava orchard during summer and winter while in mango during rainy season. In rhizosphere and non-rhizosphere, the total microbial count, phosphate solubilizing bacteria and nitrogen fixers were maximum in rainy season while fungal and actinomycetes count in summer season. The maximum increase in total microbial count, PSB and nitrogen fixers or diazotrophs were found in mango orchard during summer (11.61%, 7.88%, 7.67%) and rainy season (11.16%, 7.57%, 6.93%) respectively, over the control while lowest total bacterial count, phosphate solubilizing bacteria and nitrogen fixers count were observed in ber (20.03%), guava (10.25%) and sweet orange orchard (13.58%). However, maximum increase in fungal count over control was found in jamun orchard during summer (25.77%), rainy (21.83%) and winter season (33.44%). Maximum increase in actinomycetes count over control was found in guava orchard during summer (8.72%) and (9.37%) during winter season. Whereas in mango orchard during rainy (10.71%).

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Impact of Seasonal Variation on Physico-Chemical Properties of Orchard Soil and their Relationship with Different Fruit Tree Species under Semiarid Irrigated Conditions

Indian Journal of Pure & Applied Biosciences ◽

10.18782/2582-2845.8745 ◽

2021 ◽

Vol 9 (3) ◽

pp. 289-304

Author(s):

Dinesh Kumar ◽

Keyword(s):

Tree Species ◽

Ph Value ◽

Sweet Orange ◽

Winter Season ◽

Chemical Properties ◽

Fruit Trees ◽

Fruit Tree ◽

Available N ◽

Physico Chemical ◽

Fruit Orchards

The chemical properties in the rhizosphere of fruit tree species were investigated during different season at CCS HAU, Hisar. Results revels that pH value, OC, N, P, K, Zn contents increased significantly with all the fruit orchards over control (uncultivated land). However, maximum pH, EC, OC, CN ratio, available N, P, K, Zn and Fe (8.30, 0.33 dS/m, 0.54 %, 11.63, 126.26 kg/ha, 32.24 kg/ha, 284.93 kg/ha, 2.10 ppm and 3.34 ppm) was found in aonla, sweet orange, jamun, jamun, guava, sweet orange, guava, ber and sweet orange, respectively. Highest EC, CEC, OC and available K were found in winter season but pH, EC, available N, Zn, Mn and B contents were recorded maximum in summer season.CN ratio and available P were maximum in rainy season. Inter row spaces soil had highest pH, CEC, CN ratio and Zn contents while maximum OC, Available N, P, K, Fe, Mn and B contents was observed under the canopy of fruit trees.

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STUDY ON DIVERSITY AND DISTRIBUTION OF ANTS (HYMENOPTERA: FORMICIDAE) IN URBAN AND PERIURBAN AREAS OF AURANGABAD CITY, MAHARASHTRA, INDIA

FLORA AND FAUNA ◽

10.33451/florafauna.v23i2pp404-410 ◽

2017 ◽

Vol 23 (2) ◽

Author(s):

S. D. CHATE ◽

R. J. CHAVAN

Keyword(s):

Rainy Season ◽

Winter Season ◽

Seasonal Abundance ◽

Urban Region ◽

Ant Community ◽

Community Variation

The present study deals with the ant community variation in and around Aurangabad city. During the study total 16 species of ants belonging to twelve genera and four subfamilies were reported in eight habitat from urban and periurban regions. Abundance of ants was more in peri-urban region as compared to urban region. Subfamily myrmicinae was more dominant as compared to other subfamilies. Seasonal abundance of ants was seen to be more in winter season and less in rainy season.

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KEBERADAAN BAKTERI PELARUT FOSFAT DAN AKTIVITAS ENZIM FOSFATASE TANAH DAERAH PERAKARAN TANAMAN OBAT DARI KEBUN RAYA CIBODAS

Jurnal Rekayasa Lingkungan ◽

10.29122/jrl.v6i3.1943 ◽

2018 ◽

Vol 6 (3) ◽

Author(s):

Suliasih Suliasih

Keyword(s):

Alkaline Phosphatase ◽

Soil Sample ◽

Rhizosphere Soil ◽

Botanical Garden ◽

Soil Enzyme ◽

Soil Samples ◽

Phosphate Solubilizing Bacteria ◽

Bacillus Sp ◽

Phosphate Solubilizing ◽

Serratia Rubidaea

A study was undertaken to investigate to occurance of phosphate solubilizing bacteria from rhizosphere soil samples of medicine plants in Cibodas Botanical Garden. 13 soil samples of medicine plants are collected randomly The result shows that 71 isolates of phosphate solubilizing bacteria were isolated, and 10 species of these organism was identified as Azotobacter sp, Bacillus sp, Chromobacterium sp, C.violaceum, Citrobacter sp. , Enterobacter sp., E. liquefaciens. Nitrosomonas sp., Serratia rubidaea, Sphaerotillus natans. Azotobacter sp. And Bacillus sp. Are found in all of soil tested. Conversely, Serratia rubidaea is only in the sample from rhizosphere of Plantago mayor The activity of acid alkaline phosphatase in soil tested ranged from 0.78 â€“ 60,18 ugp nitrophenole/g/h, with the higest values being recorded in soil sample from rhizosphere of â€œLavenderâ€.Keywords : phosphate solubilizing bacteria, soil enzyme phosphatase

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