INSECTICIDE RESIDUES IN BOTTOM SEDIMENTS OF TWO NEW BRUNSWICK STREAMS DRAINING AGRICULTURAL LAND

1977 ◽  
Vol 57 (1) ◽  
pp. 15-20
Author(s):  
D. K. R. STEWART ◽  
E. R. KIMBALL ◽  
A. A. MacLEAN

Bottom sediments from two streams draining agricultural land in New Brunswick were analyzed for organochlorine and organophosphorus insecticide residues. Most samples contained appreciable quantities of DDT plus metabolites (up to a total of 2.07 ppm), about one-third contained smaller quantities of endrin (up to 0.45 ppm) and approximately one-fifth contained dieldrin (up to 0.01 ppm). No other organochlorine and organophosphorus insecticides were detected. The highest residue levels were found in the watershed with the more intensive agricultural production and in proximity to fields producing intertilled crops.

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1501 ◽  
Author(s):  
Chung-Pei Chang ◽  
Po-Hsun Hou ◽  
Wei-Cheng Yang ◽  
Ching-Fen Wu ◽  
Chia-Chia Chang ◽  
...  

Exposure to residues of antibiotics (e.g., sulfonamides) and insecticides (e.g., organophosphorus insecticides) in aquacultured food can adversely affect humans and animals and thus affect public health globally. Here, using a validated method, we examined the levels of residues of 12 sulfonamides as well as 18 organophosphorus insecticides in aquacultured fish in Taiwan. A total of 52 fish samples (i.e., 20 tilapia, 16 milk fish, and 16 perch samples) were obtained from Taiwanese aquafarms from June 2018 to October 2019. We detected 0.02 and 0.03 mg/kg of sulfamethazine (a sulfonamide) in one tilapia and one milk fish, respectively, and 0.02, 0.05, and 0.03 mg/kg of chlorpyrifos (an organophosphorus insecticide) in one tilapia, one milk fish, and one perch, respectively; thus, among the samples, 3.85% and 5.77% contained sulfonamides and organophosphorus insecticide residues, respectively. Furthermore, we assessed human health risk based on the estimated daily intakes (EDIs) of these residues: EDIs of sulfonamide and organophosphorus insecticide residues were <1.0% of the acceptable daily intake recommended by the Joint Food and Agriculture Organization of the United Nations/World Health Organization Expert Committee on Food Additives. The risk of exposure to sulfonamide and organophosphorus insecticide residue by consuming aquacultured fish in Taiwan was thus negligible, signifying no immediate health risk related to the consumption of fish. Our findings can constitute a reference in efforts geared toward ensuring food safety and monitoring veterinary drug and insecticide residue levels in aquacultured organisms. Residue levels in fish must be continually monitored to further determine possible effects of these residues on human health.


1974 ◽  
Vol 106 (12) ◽  
pp. 1319-1325 ◽  
Author(s):  
D. C. Read

AbstractThe toxicity of residues of three carbamate and nine organophosphorus insecticides in rutabaga, measured by bioassay with larvae of Hylemya brassicae (Bouché), for periods from 60 days after drilling (when roots were 5 to 6 cm diam.) until 150 days after harvest (roots in storage at 4 °C) are presented graphically. The insecticides were applied 3 to 4 cm below the soil surface in a 10 cm band at several rates ranging from 2.8 to 33.6 kg a.i./ha. Maximum toxicity for carbofuran and fensulfothion residues occurred within 75 days of drilling followed by a steady decline. Conversely, the toxicity of residues of trichloronat and chlorpyrifos increased steadily over the growing period with little or no decline during storage. The remaining insecticides exhibited toxicity patterns between these extremes. At high rates, phytotoxicity was recorded for all compounds except trichloronat and fonofos. Phytotoxicity was so severe with AC64475 ((2-diethoxyphosphinylimino)-1,3-dithietane) that all plants were destroyed with rates in excess of 11.2 kg a.i./acre. AC64475 was the most toxic insecticide to H. brassicae larvae. The nine organophosphorus insecticides included in these tests were mostly concentrated in the peel of rutabaga, whereas the carbamates were mostly concentrated in the pulp.


Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 585
Author(s):  
Catalina Iticescu ◽  
Puiu-Lucian Georgescu ◽  
Maxim Arseni ◽  
Adrian Rosu ◽  
Mihaela Timofti ◽  
...  

The use of sewage sludge in agriculture decreases the pressure on landfills. In Romania, massive investments have been made in wastewater treatment stations, which have resulted in the accumulation of important quantities of sewage sludge. The presence of these sewage sludges coincides with large areas of degraded agricultural land. The aim of the present article is to identify the best technological combinations meant to solve these problems simultaneously. Adapting the quality and parameters of the sludge to the specificity of the land solves the possible compatibility problems, thus reducing the impact on the environment. The physico-chemical characteristics of the fermented sludge were monitored and optimal solutions for their treatment were suggested so as to allow that the sludge could be used in agriculture according to the characteristics of the soils. The content of heavy metals in the sewage sludge was closely monitored because the use of sewage sludge as a fertilizer does not allow for any increases in the concentrations of these in soils. The article identifies those agricultural areas which are suitable for the use of sludge, as well as ways of correcting some parameters (e.g., pH), which allow the improvement of soil quality and obtained higher agricultural production.


1983 ◽  
Vol 14 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Júlia R. Ferreira ◽  
António M. Taínha

Author(s):  
Gennadiy A. Polunin ◽  

The article is devoted to substantiating the prospects for increasing the marginal volumes of agricultural production for export in the next four years. Two scenarios of such production are considered: 1) expansion and 2) intensification of the use of land resources. As part of the development of the first scenario, an analysis of the distribution of unused agricultural land, including arable land, by federal districts was carried out. Also, based on the forecast of the introduction of additional annual volumes of acreage in the subjects of the Federation, the calculation of additional volumes of agricultural production, which can be expected in the next four years, was carried out. The analysis of data on the increase in the yield of export-oriented crops over the past five years has been carried out, in the framework of the second scenario, the calculation of the projected additional yield due to the intensification of agriculture is presented. The results of the study indicate that the intensification of agriculture will have the greatest impact on the growth of production and export of agricultural products in the near future.


Author(s):  
Оlena Stefan ◽  

The article, based on a comprehensive analysis of regulations, doctrinal approaches and case law, substantiates the understanding of the term "agriculture" in terms of purpose (use) of land. Direct analysis of regulations revealed that agricultural land is land provided for agricultural production, agricultural research and training activities, location of relevant production infrastructure, including infrastructure of wholesale markets for agricultural products, or intended for these purposes. In turn, the purpose of the land is the permissible limits of land use by citizens and legal entities (acquirers of such a right) established by law and specified by the relevant body (which transfers such land into ownership or use). The basis for determining the purpose of the land is its belonging to the appropriate category. The main criterion, for example, to distinguish agricultural production (agricultural activity) from other activities is the use of agricultural land as the main (basic) means of production. As a result of the study, it was concluded that the term "agriculture" can be understood in its broad and narrow sense. In a broad sense, the term "agriculture" is the use of land for commercial agricultural production, farming, personal farming, subsidiary agriculture, individual and collective gardening, haymaking and cattle grazing, for research and training purposes, provision of services in agriculture, placement of infrastructure of wholesale markets for agricultural products, as well as other activities on agricultural land, depending on the activities provided by law and the constituent documents of the economic entity. In a narrow sense – this is the purpose of agricultural land. The understanding of the term "agriculture" as the purpose of agricultural land is used by the court in resolving disputes.


2004 ◽  
Vol 33 ◽  
pp. 1-35 ◽  
Author(s):  
D. Thomas ◽  
D. Rangnekar

Livestock production currently accounts for some 40% of the gross value of world agricultural production, and its share is rising (FAO, 2002). Livestock production is the largest user of agricultural land; directly through grazing of pastures and indirectly through the production of forage crops and other feeds. Over the next 20 years, there will be a massive increase in demand for food of animal origin in developing countries, and this increase will be greater than for either the major cereals or roots and tubers (IFPRI, 1995; Delgado et al., 1999).


AGRICA ◽  
2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Agustinus JP Ana Saga

Synergi analysis of the tugging of interest  in agricultural production and envirometal services. Conversion of land functions into intensive agriculture can cause degradation or declining land capability. This is because farmers' orientation is always on production and ignoring environmental services. Intensive agriculture always causes environmental problems, resulting in a tug of war in agricultural production and environmental services. The purpose of this study is to find out how much intensive land use has resulted in a deterioration of environmental services. This research was carried out on intensive agricultural land (Horticulture) (PI), AF-CK (cloves), AF-KK (cocoa), AF-KM (candlenut), AF-KP (coffee), owned by farmers and AF-HS (forest secondary) in Tn. Kelimutu National. This research uses interviews and exploration methods. The results showed that the level of intensification of horticultural land use in Kelimutu was classified as very intensive with an R-value and an LUI index = 79, the survey results showed that the density of earthworm populations in SPL-AF was as low as the population in SPL-HS, on average only 3 tails m-2, while in SPL-PI the average is only 0.24 m 2. The earthworm biomass in AF is about 69% smaller than the worms found in SPL-HS; earthworm biomass average in SPL-AF 15 g m-2 while in SPL-HS an average of 47 g m-2; and the smallest worm biomass found in SPL-PI averaging about 2.3 g m-2. The diversity of earthworms is significantly different between land uses. The average diversity of earthworms (H ') reaches 0.88; Index R = 0.34; and Index E = 0.92. The four species that dominate are 1). Pontoscolex (endogeik, INP = 48.52), 2). Megascolex (endogeik; INP 44,61), 3). Pheretima (epigeic, INP 35.29), and 4). Lumbricus (epigeic, INP = 13.01)


2021 ◽  
pp. 135-139
Author(s):  
L. V. Kireicheva ◽  
V. A. Shevchenko ◽  
I. F. Yurchenko

Relevance. The effective use of agricultural land is a fundamental prerequisite for the successful implementation in the agro-industrial complex of the task of providing the population with food, and production with raw materials. At the same time, the issues of methodological support of the procedures for determining the integral indicator for assessing the use of agricultural land, established on the basis of a theoretically grounded unified approach based on quantitative methods, have been developed with insufficient completeness. Actualization of the issues of improving the theory and practice of assessing the effectiveness of the use of agricultural land in agricultural production is becoming one of the priority tasks of land reclamation science. The purpose of this work is to create a methodological basis for the process of assessing the use of agricultural land, which guarantees the comparability of the considered options for agroproduction in different natural and economic conditions.Methods. The research is based on the method of point assessments for indicators of agricultural land exploitation and the formation on their basis an integral criterion of land use efficiency. The proposed procedure includes: analysis of statistical data characterizing the dynamics of the values of indicators of used land resources, calculation of local assessments of the feasibility of their exploitation and assessment of the efficiency of land use according to a generalizing criterion represented by the sum of these local assessments.Results. A methodology has been developed and a method has been created for determining the efficiency of the use of agricultural land, based on a generalized integral assessment of the operation of agricultural land, which allows to identify bottlenecks in agricultural production and outline rational directions for the development of land use. The testing of the algorithm of the methodology and capabilities of the scale for the integral assessment of the efficiency of the use of land resources was carried out on the example of the Non-Black Earth Zone of the Russian Federation. Shown is an unsatisfactory (below the national average) contribution of agricultural production to the gross regional product. On the whole, positive dynamics of agricultural production in the Non-Black Earth Zone was established, which is achieved due to the development of animal husbandry, which is an effective factor in the formation of modern efficient agriculture of the territory, with the orientation of the crop production system on the raw material basis of feed production or the sector of the economy of the agro-industrial complex of the territory.


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