Chemistry of Soil-Nutrient Interactions and Future Agricultural Sustainability

2015 ◽  
pp. 179-189
Author(s):  
Stanley A. Barber
Keyword(s):  
Soil Nutrient ◽  
Agricultural Sustainability ◽  
Nutrient Interactions

Modelling of soil nutrient budgets: an assessment of agricultural sustainability in Nepal

2006 ◽  
Vol 15 (2) ◽  
pp. 101-108 ◽  
Author(s):  
S. Brown ◽  
H. Schreier ◽  
P.B. Shah ◽  
L.M. Lavkulich
Keyword(s):  
Soil Nutrient ◽  
Agricultural Sustainability ◽  
Nutrient Budgets

Dynamics of sympatric Paratylenchus nanus and Paratrichodorus minor populations in soil under pasture

Nematology ◽  
2001 ◽  
Vol 3 (3) ◽  
pp. 267-275 ◽  
Author(s):  
Richard Watson ◽  
Nigel Bell
Keyword(s):  
New Zealand ◽  
Activity Index ◽  
Soil Nutrient ◽  
Biotic Factors ◽  
Nutrient Interactions ◽  
Seasonal Periodicity ◽  
Vertical Distribution Pattern ◽  
Grazed Pasture ◽  
Host Root ◽  
Niche Differences

AbstractPopulations of both Paratrichodorus minor and Paratylenchus nanus in a grazed pasture in Waikato, New Zealand were assessed in single 2.5 cm diam. core samples over six successive seasons. Neither seasonal periodicity nor a consistent vertical distribution pattern was observed in the P.minor population. P.nanus had distinct spring and summer population maxima and was more abundant at 0-10 than 10-20 cm depth. P.minor but not P.nanus abundance was significantly correlated with rainfall and an activity index combining rainfall and soil temperature for the week before sampling. Significant correlations among P.minor, P.nanus and concentrations of some soil nutrients seemed to reflect soil nutrient interactions with other biotic factors such as plant growth. There was no evidence for competition between these two nematodes. Host root resource, spatial aggregation and differences in morphology that indicate niche differences are discussed as possible reasons for the observed lack of competition.

scholarly journals Agroforestry and Biodiversity

2019 ◽  
Vol 11 (10) ◽  
pp. 2879 ◽  
Author(s):  
Ranjith P. Udawatta ◽  
Lalith Rankoth ◽  
Shibu Jose
Keyword(s):  
Meta Analysis ◽  
Soil Nutrient ◽  
Partial Solution ◽  
State Agency ◽  
Agricultural Sustainability ◽  
Soil Conditions ◽  
Nutrient Deficiencies ◽  
Microclimate Conditions ◽  
Selection Of ◽  
Heterogeneous Vegetation

Declining biodiversity (BD) is aecting food security, agricultural sustainability,and environmental quality. Agroforestry (AF) is recognized as a possible partial solution forBD conservation and improvement. This manuscript uses published peer-reviewed manuscripts,reviews, meta-analysis, and federal and state agency documents to evaluate relationships betweenAF and BD and how AF can be used to conserve BD. The review revealed that floral, faunal, and soilmicrobial diversity were significantly greater in AF as compared to monocropping, adjacent croplands, and within crop alleys and some forests. Among the soil organisms, arbuscular mycorrhizaefungi (AMF), bacteria, and enzyme activities were significantly greater in AF than crop and livestockpractices. Agroforestry also creates spatially concentrated high-density BD near trees due to favorablesoil-plant-water-microclimate conditions. The greater BD was attributed to heterogeneous vegetation,organic carbon, microclimate, soil conditions, and spatial distribution of trees. Dierences in BDbetween AF and other management types diminished with time. Evenly distributed leaves, litter,roots, dead/live biological material, and microclimate improve soil and microclimate in adjacentcrop and pasture areas as the system matures. Results of the study prove that integration of AFcan improve BD in agricultural lands. Selection of site suitable tree/shrub/grass-crop combinationscan be used to help address soil nutrient deficiencies or environmental conditions. Future studieswith standardized management protocols may be needed for all regions to further strengthen thesefindings and to develop AF establishment criteria for BD conservation and agricultural sustainability.

HEALTHINESS OF OIL PALM PLANTATION TOWARDS SUSTAINABILITY OF ENVIRONMENT

2020 ◽  
Vol 7 (1) ◽  
pp. 21
Author(s):  
Faradina Marzukhi ◽  
Nur Nadhirah Rusyda Rosnan ◽  
Md Azlin Md Said
Keyword(s):  
Oil Palm ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Satellite Image ◽  
Vegetation Indices ◽  
Soil Nutrient ◽  
Oil Palm Plantation ◽  
Sustainable Environment ◽  
Moisture Analysis ◽  
The Relationship

The aim of this study is to analyse the relationship between vegetation indices of Normalized Difference Vegetation Index (NDVI) and soil nutrient of oil palm plantation at Felcra Nasaruddin Bota in Perak for future sustainable environment. The satellite image was used and processed in the research. By Using NDVI, the vegetation index was obtained which varies from -1 to +1. Then, the soil sample and soil moisture analysis were carried in order to identify the nutrient values of Nitrogen (N), Phosphorus (P) and Potassium (K). A total of seven soil samples were acquired within the oil palm plantation area. A regression model was then made between physical condition of the oil palms and soil nutrients for determining the strength of the relationship. It is hoped that the risk map of oil palm healthiness can be produced for various applications which are related to agricultural plantation.

Populations Dynamics of Soybean Insect Pests vs. Soil Nutrient Levels

Crop Science ◽  
1991 ◽  
Vol 31 (6) ◽  
pp. 1629-1633 ◽  
Author(s):  
J. E. Funderburk ◽  
I. D. Teare ◽  
F. M. Rhoads
Keyword(s):  
Insect Pests ◽  
Soil Nutrient ◽  
Nutrient Levels ◽  
Populations Dynamics
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