Decoding seasonal changes: soil parameters and microbial communities in tropical dry deciduous forests

In dry deciduous tropical forests, both seasons (winter and summer) offer habitats that are essential ecologically. How these seasonal changes affect soil properties and microbial communities is not yet fully understood. This study aimed to investigate the influence of seasonal fluctuations on soil characteristics and microbial populations. The soil moisture content dramatically increases in the summer. However, the soil pH only gradually shifts from acidic to slightly neutral. During the summer, electrical conductivity (EC) values range from 0.62 to 1.03 ds m-1, in contrast to their decline in the winter. The levels of soil macronutrients and micronutrients increase during the summer, as does the quantity of soil organic carbon (SOC). A two-way ANOVA analysis reveals limited impacts of seasonal fluctuations and specific geographic locations on the amounts of accessible nitrogen (N) and phosphorus (P). Moreover, dehydrogenase, nitrate reductase, and urease activities rise in the summer, while chitinase, protease, and acid phosphatase activities are more pronounced in the winter. The soil microbes were identified in both seasons through 16S rRNA and ITS (Internal Transcribed Spacer) gene sequencing. Results revealed Proteobacteria and Ascomycota as predominant bacterial and fungal phyla. However, Bacillus, Pseudomonas, and Burkholderia are dominant bacterial genera, and Aspergillus, Alternaria, and Trichoderma are dominant fungal genera in the forest soil samples. Dominant bacterial and fungal genera may play a role in essential ecosystem services such as soil health management and nutrient cycling. In both seasons, clear relationships exist between soil properties, including pH, moisture, iron (Fe), zinc (Zn), and microbial diversity. Enzymatic activities and microbial shift relate positively with soil parameters. This study highlights robust soil-microbial interactions that persist mainly in the top layers of tropical dry deciduous forests in the summer and winter seasons. It provides insights into the responses of soil-microbial communities to seasonal changes, advancing our understanding of ecosystem dynamics and biodiversity preservation

Range Management and Agroforestry

Not AvailableIndian agricultural bears heavy labour and cost in the straw handling process after harvest. During peak harvesting season, unavailability of labourers and need of timeliness of operation, burning of straw in field have been a conventional practice. Mechanization in this field has been low but loading/unloading of loose straw is a tedious work. These operations can be performed efficiently using a tractor operated pneumatic loader and with less effort. Present study was aimed at optimizing the working of pneumatic loader at varying suction, delivery length and power take-off (PTO) speeds for wheat, soybean and pigeon pea straws. The optimized suction and delivery lengths for all the three straws were obtained as 2 and 10 m, respectively. The PTO speeds of 302, 366, and 373 rpm were identified as optimum for wheat, soybean, and pigeon pea straws, respectively. The operational cost of the machine with tractor was calculated as Rs. 228 for loading one tonne straw which resulted in heavy savings

Physico-Chemical Properties of Surface Soil in Ashoknagar District of Madhya Pradesh for Agricultural Production

Looking at the crop production and soil related constraints in different village of Ashoknagar District of Madhya Pradesh we found it important to characterize the soils of the village. For this purpose, one hundred twenty-five GPS-based surface soil samples (0-15 cm) were collected from five blocks (Mungaoli, Chanderi, Ishagarh, Ashoknagar and Sadora) of Ashoknagar district from April to May 2017-2018. Soils were studied for their physical and chemical characteristics - status of sand,silt,clay percent varied from 36.6-56.7%, 3.9-38% and 25.2-42.4%, with the mean value of 47.5%, 17.2% or 35.1%, respectively and soil pH, EC, OC, Calcium carbonate, total Nitrogen or available sulphur were observed in the range of 7.2– 8.6, 0.32 - 0.62dSm‑1, 2.14 - 7.06 gkg-1, 0.5 –3.5 %  0.01-0.24 % and 4.36 – 40.25 mg kg-1under different villages of the investigated area with the average value of 8.0, 0.45dSm‑1, 4.35gkg-1, 1.7% and 0.11 %,14.68 mg kg-1 respectively. The availability of sulphur increased with an increase in organic carbon and clay content in the soil