scholarly journals Aftereffect of herbicides and the dynamics of their decomposition in various agricultural landscapes

2019 ◽  
pp. 27-31
Author(s):  
Yuriy Yakovlevich Spiridonov ◽  
Nikolay Ivanovich Budynkov ◽  
Nikolay Ivanovich Strizhkov ◽  
Natalya Borisovna Suminova ◽  
Larisa Borisovna Sayfullina ◽  
...  
Keyword(s):  
Soil Type ◽  
Anthropogenic Impact ◽  
Chemical Properties ◽  
Agricultural Landscapes ◽  
Physical And Chemical Properties ◽  
Negative Effects ◽  
Hydrothermal Regime ◽  
Physical And Chemical ◽  
And Chemical Properties

They are given results of experiments to determine the dynamics of decomposition and residual amounts of herbicides in the soil and in the products in various agricultural landscapes. It has been established that the duration of herbicides conservation in soil, primarily sulfonylureas, and the associated level of their negative effects on sensitive crops rotate depend on the relief, soil type, their physical and chemical properties, the hydrothermal regime of the environment and the nature of anthropogenic impact on the agroecosystem.  

scholarly journals Impact of Nanoparticles on Brain Health: An Up to Date Overview

2018 ◽  
Vol 7 (12) ◽  
pp. 490 ◽  
Author(s):  
Daniel Teleanu ◽  
Cristina Chircov ◽  
Alexandru Grumezescu ◽  
Adrian Volceanov ◽  
Raluca Teleanu
Keyword(s):  
Food Industry ◽  
Chemical Properties ◽  
Brain Diseases ◽  
Physical And Chemical Properties ◽  
Brain Health ◽  
Negative Effects ◽  
Toxicological Studies ◽  
Neurotoxic Effects ◽  
Physical And Chemical ◽  
And Chemical Properties

Nanoparticles are zero-dimensional nanomaterials and, based on their nature, they can be categorized into organic, inorganic, and composites nanoparticles. Due to their unique physical and chemical properties, nanoparticles are extensively used in a variety of fields, including medicine, pharmaceutics, and food industry. Although they have the potential to improve the diagnosis and treatment of brain diseases, it is fundamentally important to develop standardized toxicological studies, which can prevent the induction of neurotoxic effects. The focus of this review is to emphasize both the beneficial and negative effects of nanoparticles on brain health.

Soils of the Poplar Box (Eucalyptus populnea) communities of Eastern Australia.

1980 ◽  
Vol 2 (1) ◽  
pp. 17 ◽  
Author(s):  
AA Webb ◽  
PJ Walker ◽  
RH Gunn ◽  
AT Mortlock
Keyword(s):  
Soil Type ◽  
New South ◽  
Chemical Properties ◽  
Soil Types ◽  
Physical And Chemical Properties ◽  
South Wales ◽  
Eastern Australia ◽  
Physical And Chemical ◽  
Eucalyptus Populnea ◽  
And Chemical Properties

Information on the soils of recognized poplar box (Eucalyptus populnea) communities has been collated from published and unpublished reports. Major soils have been described briefly in terms of morphology and some physical and chemical properties. Site data from a number of previous surveys was used in an attempt to identify soil type/vegeration relationships. Poplar box occurs on a very \\'ide range of soil types. Approximately half of the 1500 sites described in Queensland and New South Wales were on duple\ soils. The data indicate that poplar box prefers lighter textured soils such as uniform sands and massive earths in the western areas of its distribution but in the eastern, more mesic areas il occurs mainly on duplex clay soits.

scholarly journals Some physiochemical properties of termite mound soil and its effect on yield and yield components of maize (Zea mays L.) Under Greenhouse condition at Nekemte, western Ethiopia

2021 ◽  
Vol 44 (1) ◽  
pp. 38-46
Author(s):  
Temesgen Beyene ◽  
Emana Getu
Keyword(s):  
Plant Growth ◽  
Soil Type ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Cultivated Land ◽  
Termite Mound ◽  
Adjacent Soil ◽  
Physical And Chemical ◽  
Western Ethiopia ◽  
And Chemical Properties

Termite mound soil amends soil fertility and utilized as an alternative to npk fertilizers by smallholder farmers in Africa. Experiment was conducted in western Ethiopia to compare selected physical and chemical properties of mound soil (ms), Adjacent soil (as) and non-mound soil (nms) and the effect of these soils on maize plant growth and yield in the Greenhouse. In Limu district, Fitbako kebele, cultivated land was purposively selected for sampling. In the cultivated land, a plot of 100m x100m was delineated and three mounds within the plot were also purposively selected to collect composite soil sample for soil analysis and Greenhouse pot experiment. From each mound, 10kg soil each from bottom, middle and top (total= 30 kg) were collected and mixed to obtain working sample of 10 kg. About 30kg of adjacent soil 5m away from mound soils and Non-mound soil at the distance of 20 m away from mound soil at the depth of 0-30cm were collected and thoroughly mixed to make working sample of 10kg from each soil type. Three kilograms of mound soil, adjacent soil and non-mound soil each was put in separate plastic bucket for greenhouse pot experiment. About 100 gm of each soil type was used for selected physical and chemical properties analyses. The result obtained demonstrated that termite mound soil was significantly (P<0.05) high in bulk density (bd), moisture contents (mc), porosity (P), Soil pH, percent organic carbon (% oc) and percent organic matter (% om). Total Nitrogen (tn), average (av.) P, av. K, Exch.  Ca and Exch. Mg were also significantly (P<0.05) higher in mound soil in comparison with adjacent soil and non-mound soil. Maize plant growth traits and yield were significantly (P<0.05) high in mound soil. From the current study, it can be concluded that the use of npk fertilizer on plots having termite mound is not recommended. However, further research is needed on how to use mound soil on large plot of land

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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