Frequency and Dispersal of Glyphosate-Resistant Sourgrass (Digitaria insularis) Populations across Brazilian Agricultural Production Areas

Weed Science ◽  
2017 ◽  
Vol 65 (2) ◽  
pp. 285-294 ◽  
Author(s):  
Ramiro F. Lopez Ovejero ◽  
Hudson K. Takano ◽  
Marcelo Nicolai ◽  
Antonio Ferreira ◽  
Marcel S. C. Melo ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Monitoring Program ◽  
Production Sector ◽  
Resistance Monitoring ◽  
Raising Awareness ◽  
Rapid Spread ◽  
Monitoring Study ◽  
Production Areas ◽  
Agricultural Regions ◽  
Weed Resistance

The rapid spread of glyphosate-resistant sourgrass populations generates concern in the agricultural production sector in Brazil. Nonetheless, there is not much information related to the frequency and dispersion of sourgrass throughout recent years. We investigated the frequency and dispersion of glyphosate-resistant sourgrass populations in Brazilian agricultural regions as part of a larger-scale weed resistance monitoring study. A discriminatory rate of 960 g ae ha−1of glyphosate was used on plants at the 2- to 3-tiller stage, originating from 2,593 populations of sourgrass sampled in 329 counties in 14 Brazilian states between 2012 and 2015. The dispersion of sourgrass populations originated in western Paraná State, next to the Paraguay border, where the first resistance case was reported. Its dispersion to the central region of Brazil, mainly in soybean-producing areas, is most likely a consequence of agricultural equipment movement and wind-mediated dispersal. Glyphosate-resistant sourgrass populations were found in every geographical region across all Brazilian states tested. These data highlight the importance of an appropriate weed resistance monitoring program to track the evolution and dispersion of resistance to mitigate these issues by focusing efforts regionally and raising awareness among stakeholders in each region.

Spatial Scan Statistics to Assess Sampling Strategy of Antimicrobial Resistance Monitoring Program

2009 ◽  
Vol 6 (1) ◽  
pp. 15-21 ◽  
Author(s):  
A.R. Vieira ◽  
H. Houe ◽  
H.C. Wegener ◽  
D.M.A. Lo Fo Wong ◽  
R. Bødker ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Monitoring Program ◽  
Sampling Strategy ◽  
Scan Statistics ◽  
Spatial Scan Statistics ◽  
Resistance Monitoring ◽  
Spatial Scan

scholarly journals Product Complementarity in Production: The By-product Case

1974 ◽  
Vol 6 (2) ◽  
pp. 161-165 ◽  
Author(s):  
Bruce Beattie ◽  
Stassen Thompson ◽  
Michael Boehlje
Keyword(s):  
Production Process ◽  
Production Function ◽  
Environmental Degradation ◽  
Agricultural Production ◽  
Farm Management ◽  
Production Economics ◽  
Production Sector ◽  
The Past ◽  
Product Optimization

The product-product relationship has been a traditional subject of most production economics and farm management courses for the past two decades. Although the traditional examples of product-product optimization have come primarily from the agricultural production sector (e.g., legume-corn rotations and crop-livestock combinations), the concept is useful in analyzing the organization of any multi-product firm-including those firms which produce externalities in the form of environmental degradation.Three concepts or ideas usually are offered as giving rise to a positively sloped or complementary range on the product transformation surface-(l) one production process uses as an input a by-product of another production process, (2) one process uses quantities of a factor that are “surplus” to another, or (3) technical interaction (production function shifts) occurs.

The Arab Agricultural Revolution and Its Diffusion, 700–1100

1974 ◽  
Vol 34 (1) ◽  
pp. 8-35 ◽  
Author(s):  
Andrew M. Watson
Keyword(s):  
West Africa ◽  
Labor Force ◽  
Urban Growth ◽  
Agricultural Production ◽  
Eleventh Century ◽  
Islamic World ◽  
Agricultural Revolution ◽  
Rapid Spread ◽  
Early Islamic ◽  
Close Contacts

The rapid spread of Islam into three continents in the seventh and eighth centuries was followed by the diffusion of an equally remarkable but less well documented agricultural revolution. Originating mainly in India, where heat, moisture and available crops all favored its development and where it had been practiced for some centuries before the rise of Islam, the new agriculture was carried by the Arabs or those they conquered into lands which, because they were colder and drier, were much less hospitable to it and where it could be introduced only with difficulty. It appeared first in the eastern reaches of the early-Islamic world—in parts of Persia, Mesopotamia and perhaps Arabia Felix—which had close contacts with India and where a few components of the revolution were already in place in the century before the rise of Islam. By the end of the eleventh century it had been transmitted across the length and breadth of the Islamic world and had altered, often radically, the economies of many regions: Transoxania, Persia, Mesopotamia, the Levant, Egypt, the Maghrib, Spain, Sicily, the savannah lands on either side of the Sahara, parts of West Africa and the coastlands of East Africa. It had very far-reaching consequences, affecting not only agricultural production and incomes but also population levels, urban growth, the distribution of the labor force, linked industries, cooking and diet, clothing, and other spheres of life too numerous and too elusive to be investigated here.

scholarly journals METODY ILOŚCIOWE W BADANIU STRAT I MARNOTRAWSTWA ŻYWNOŚCI W SEKTORZE PRODUKCJI PIERWOTNEJ

2020 ◽  
Vol 20 (4) ◽  
pp. 263-279
Author(s):  
Mikołaj Niedek ◽  
Karol Krajewski ◽  
Sylwia Łaba ◽  
Krystian Szczepański
Keyword(s):  
Food Waste ◽  
Food Chain ◽  
Agricultural Production ◽  
Research Project ◽  
Production Sector ◽  
The Subject ◽  
Food Losses ◽  
Intended Use ◽  
Food Wastage ◽  
The Eu

The subject of the article is the review of methods for obtaining data on the amount of losses generated and food wastage in the agricultural production sector. The topic are also recommended methods for collecting this data in the agri-food chain at the EU level. Agriculture is the first link in this chain and the most food losses occur in it. The article presents the determinants of measuring losses and food waste in agriculture, the importance of defining and monitoring the intended use of the product and qualifying losses as food waste. The methods used to quantify the level of food losses in agriculture were also used in the PROM research project implemented under the GOSPOSTRATEG Program.

Revised Discriminating Lethal Doses For Resistance Monitoring Program onAedes albopictusAgainst Temephos and Malathion in Penang Island, Malaysia

2016 ◽  
Vol 32 (3) ◽  
pp. 210-216 ◽  
Author(s):  
Junaid Rahim ◽  
Abu H. Ahmad ◽  
Nur Faeza A. Kassim ◽  
Hamdan Ahmad ◽  
Intan H. Ishak ◽  
...  
Keyword(s):  
Monitoring Program ◽  
Resistance Monitoring ◽  
Lethal Doses

The Growth and Development of Five Waterhemp (Amaranthus tuberculatus) Populations in a Common Garden

Weed Science ◽  
2017 ◽  
Vol 65 (2) ◽  
pp. 247-255 ◽  
Author(s):  
Joseph M. Heneghan ◽  
William G. Johnson
Keyword(s):  
United States ◽  
Agricultural Production ◽  
Growth And Development ◽  
Crop Production ◽  
Common Garden ◽  
Common Garden Experiment ◽  
Common Environment ◽  
Amaranthus Tuberculatus ◽  
Production Areas ◽  
Seed Yields

Waterhemp is a weed indigenous to the midwestern United States and is problematic in agronomic crop production. This weed is well suited to inhabit minimally tilled environments and is increasing in prevalence across many agricultural production areas and systems. A common garden experiment was established in Indiana in 2014 and 2015 with waterhemp populations from Indiana, Illinois, Missouri, Iowa, and Nebraska to compare the growth and development of waterhemp from these regions. Three establishment dates (May, June, and July) were used each year to simulate discontinuous germination. Mean biomass accumulations from the May (1,120 g plant−1) and June (1,069 g plant−1) establishment dates were higher than from the July (266 g plant−1) establishment date. There were no differences in biomass accumulations between the five populations in the May and June establishments, but biomass accumulations ranged from 195 to 338 g plant−1in the July establishment. Mean seed yields were higher from the May (926,629 seeds plant−1) and June (828,905 seeds plant−1) establishment dates compared with the July (276,258 seeds plant−1) establishment. In the May and June establishments, seed yields ranged from 469,939 seeds plant−1to 1,285,556 seeds plant−1. The Illinois population flowered the latest of all the populations yet also grew the tallest. The July establishment flowered the most rapidly after establishment, accumulated less biomass, and also had the largest seeds. This study demonstrated differences among waterhemp populations when grown in a common environment and the effect of establishment timing on waterhemp growth and development.

MITOCHONDRIAL DNA ANALYSIS OF ANCIENT DOMESTIC GOAT IN THE MONGOLIA

2018 ◽  
pp. 59-65
Author(s):  
Temuujin J ◽  
Khaliunaa T ◽  
Batsaikhan Z ◽  
Ochirkhuyag B ◽  
Khulan J ◽  
...  
Keyword(s):  
National Security ◽  
Agricultural Production ◽  
Dna Analysis ◽  
Domestic Goat ◽  
Production Sector ◽  
Economic Productivity ◽  
Livestock Population ◽  
Mitochondrial Dna Analysis ◽  
Small Livestock ◽  
National Statistical Office

Food and agricultural production sector, especially livestock production is vital for Mongolia’s economic and social development. The five breeds of livestock – cattle, horses, sheep, goats and camels, have always been directly related to the history, culture and economy of Mongolia. It is undeniable that these five breeds of livestock are considered as an important asset of the Mongolian economy as well as guarantee of national security. Out of the five breeds, small livestock including sheep and goats account for more than 80% of the total livestock population (according to the National Statistical Office data). It is not hard to retrieve research and recorded materials about the morphology or the economic productivity of these breeds and their sub-breeds. However, the development of society now demands higher yield from the livestock animals. Genetically, the a1, a2, a3 and a4 samples appertaining to some 3,000 years ago are substantially different from the haplogroups. However, judging by the phylogenetic tree the 800 year-old samples, as compared to the phylogroups of the 3rd century BC, are closer to the modern samples. Alongside this, from molecular distance we find that the M1 haplogroup is a sample belonging to the 3rd century BC, which had separated the earliest, while the aforementioned 800 year-old sample separates at a later period, which chronologically is convincing. But the a6 ancient sample conforms to the B haplogroup and the a8 or the sample of 800 years ago is in the same haplogroup as the sample of the 3rd century BC. However, the a6 sample obtained from the 3rd century BC tombs obtained sample was the origin of modern goats that can be included in haplogroup B.

Organic amendments initiate the formation and stabilisation of macroaggregates in a high clay sodic soil

Soil Research ◽  
2009 ◽  
Vol 47 (8) ◽  
pp. 770 ◽  
Author(s):  
G. J. Clark ◽  
P. W. G. Sale ◽  
C. Tang
Keyword(s):  
Crop Production ◽  
Organic Amendments ◽  
Green Plant ◽  
Chicken Manure ◽  
Sodic Soil ◽  
Plant Materials ◽  
Substantial Problem ◽  
Level Of Aggregation ◽  
Production Areas ◽  
Agricultural Regions

Subsoil constraints present a substantial problem for crop production in many agricultural regions. In particular, soils in temperate grain production areas of Australia are often poorly structured due to high content of sodic clay. An alternative to the standard practice of addition of gypsum is to incorporate organic amendments deep into the subsoil. An incubation experiment was performed for 174 days using several organic amendments. These consisted of wheat shoots, lucerne pellets, canola and chickpea stubbles, chicken manure, peat, and sawdust. Gypsum, an inorganic amendment commonly applied to sodic soil, was included for comparison. The change over 174 days in soil structural properties was measured using wet-sieving. Formation of slaking-resistant macroaggregates >2 mm was most rapid with ‘green plant material’, wheat and lucerne, while the ‘stubbles’ were markedly slower in obtaining the equivalent level of aggregation. However, the largest growth in aggregates after day 56 was shown by the ‘stubble’ and chicken manure amended soils. The gypsum amendment was not capable of forming large, slaking-resistant aggregates >2 mm; this may be attributed to the inability of gypsum to stimulate soil biological processes. Peat and sawdust failed to initiate slaking-resistant macroaggregates. The study demonstrated that a variety of organic amendments have the ability to improve the physical fertility of sodic subsoil, and in the case of the green plant materials within 1 week of incubation.

scholarly journals AGRICULTURAL PRODUCTION IN THE KURSK REGION: SUCCESSES AND ACHIEVEMENTS

2021 ◽  
Vol 10 (34) ◽  
Author(s):  
O.V SVYATOVA ◽  
◽  
A.A GOLOVIN ◽  
T.I PANKOVA ◽  
D.V NIKOLENKO ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Agricultural Sector ◽  
Meat Production ◽  
Economic Downturn ◽  
Key Indicator ◽  
Role Of The State ◽  
Russian Agriculture ◽  
Production Areas ◽  
Kursk Region

In difficult economic and socio-political conditions, there is an increase in the dominant importance of Russian agriculture, not only as a guarantor of social stability in terms of ensuring food security, but also as a driver of the country's economic development in the strategic future. During the period of the spread of the coronavirus threat, many industries suffered significant losses, resulting in an economic downturn in most countries of the world. In this situation, agriculture can become a catalyst for the development of economic processes in regions with agricultural specialization, as the demand for food, both in the Russian market and abroad, will continue to increase. The article considers the results of agricultural production in the Kursk region, according to which the conclusion is made about significant success in a number of agricultural production areas. Against the background of initially lower provision of our region with resources and other natural and economic conditions in comparison with the leading regions, there are noticeable rates of positive changes in the agricultural sector of the Kursk region, which allowed the region to enter the top 10 in terms of sugar beet yields, grain and meat production. The key indicator of the analysis is the share of agricultural production in the region relative to the all-Russian similar indicator, the assessment of which revealed a more dynamic development of the Kursk region on average in comparison with other regions in the country. The study argues that it is necessary to increase the role of the state as a guarantor of stability and investment attractiveness of domestic agriculture in order to maintain positive dynamics of production and economic processes in the context of accelerating recovery from the pandemic crisis.

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