Spatial and temporal variability in soil and leaf nutrient status was used as a tool to find out the causes for disorders in clay and laterite soils. Availability of nutrients in soils was sufficient to excess. Deviation from optimum percentage index was negative for nitrogen (N), phosphorus (...
Fig. 4. Sand percentage at 0–5 cm and 0–30 cm soil depth from POLARIS soil properties at 30 m spatial resolution over the contiguous USA.Map courtesy of Dr. Nate Chaney. Soil organic carbon concentrations in sandy soils varied by continent and by climate zone. Most of the sandy soils...
but had otherwise a limited effect on microbial carbon values in the rest of the range above zero up to 28.9 °C. Based on partial predictions (Supplementary Figs.1–2), microbial carbon decreased monotonically with an increase in temperature (with all...
Exchangeable Mg(+) and K(+) correlated with clay percentage, though both still had higher concentrations near the city controlling for clay content. Near the city, where salinity and Exch-Na concentrations were highest, farmers had replaced rice with para grass [Brachiaria mutica (Forsk.)], ...
97. Plants harbouring soil-borne insects were counted, and the percentage incidence was determined using Eq. (1). The collection of insect and plant samples was carried out in compliance with the guidelines provided by Kenya’s National Council for Science Technology and Innovation (NACOSTI) and...
The extent by which the cation exchange fraction in a soil is occupied by Na+ is reflected in the exchangeable sodium percentage (ESP). Saline soils with an ESP greater than 15% are termed ‘saline–sodic’ soils (SSSA, 2008). A high ESP or SAR causes clay minerals and organic matter ...
The soil samples were found to be acidic in nature with a pH ranging from of 5.1-6.0. Highest percentage of organic carbon and moisture content were observed in the samples collected from the sites, Chahala-1 and Chahala-2. The plate count revealed that fungal population ranged from 3.6 ...
It contains three times as much as the 830 billion tonnes found in the atmosphere, and 240 times as much as the 10 billion tonnes emitted by fossil fuel burning every year. An increase of only a few percentage points would sequester huge quantities of carbon. Research has estimated that the...
For further analysis, the total number of reads of individual taxa was converted into a percentage, assuming the sum of all taxa in individual samples to be 100%. The results are presented as a percent of the relative abundance of identified sequences at the selected taxonomy levels (phyla, ...
These soils are predominantly fine soils, with high percentage of clays along with appreciable percentage of silts. These types of red cohesive soils are prevalent in and around Guwahati region. Along with the particle size distribution of the cohesive soil used in the present study, Fig. 1 ...