Establishment of Nutsedge from Space-Planted Tubers

Hauser, E. W.

doi:10.2307/4040780

Cited by 49 publications

(41 citation statements)

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“…This might be due to the earlier emergence of the tubers. Hauser (1962) also reported that after the emergence of the tubers, the foliage and root growth were vigourous in purple nutsedge. The emergence of the purple nutsedge in the fields in general, after rainfall or irrigation might be due the sprouting of water soaked tubers.…”

Section: Growth Parametersmentioning

confidence: 93%

Assessment of Tuber Viability and Sprouting Behavior of Purple Nutsedge (Cyperus rotundus) - A Prelude Study for Control of World Worst Weed

Chinnamuthu¹,

Srimathi²

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Growth Parametersmentioning

confidence: 93%

Assessment of Tuber Viability and Sprouting Behavior of Purple Nutsedge (Cyperus rotundus) - A Prelude Study for Control of World Worst Weed

Chinnamuthu¹,

Srimathi²

2017

Int.J.Curr.Microbiol.App.Sci

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“…centered on light and water depending on weed height (5). Research has shown that weeds usually absorb fertilizer faster and in relatively larger amounts than crops and therefore derive greater benefit (6) classified as the world's worst weed, is intolerant to shade and forms 10 to 57% fewer tubers and bulbs when shaded continuously (2,9).…”

Section: Classes Of Losses Caused By Weeds In Cropsmentioning

confidence: 99%

Economics of Weed Control in Crops

Chandler

1985

ACS Symposium Series

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In United States crops, losses caused by weeds and the cost of their control totals about $15.2 billion annually. Total losses from weed competition with major crops produced in the UnitedStates is approximately $8.9 billion. Total expenditures for herbicides used in United States crops are approximately $2.1 billion with application of these herbicides costing $938 million annually. Equipment and labor costs of about $3.1 billion are spent annually for interrow tillage of crops and tillage to control weeds between cropping seasons. Without current control technology the losses from weeds would be double or triple. Expenditures for research studies of herbicides and plant growth regulators have increased during the past 5 years, but only minimal resources have been allocated to studies of allelochemicals.The recent gains in world population and the pressure they place on natural resources is having an impact on the economics of weed control currently and will have far reaching impact on it in the future. Since the early 1940's the world's population doubledfrom less than 2.3 billion to over 4.6 billion in 1983. The annual rate of growth is about 1.7 percent and recent projections indicate the global population will increase to slightly over 6 billion by 2000.Natural resources affect people and people affect natural resources. Many qualities or attributes of nature are customarily described as "natural resources" -soils, climate, plants, minerals, and others. But these are not really resources for human welfare until appropriate amounts of human energy, resourcefulness, capital, and managerial capacity have been applied to these qualities of nature, to transform them into materials and services usable by people.Natural resources are scarce in relation to human wants or demands. Many natural resources and their products are traded in markets. The basic cost of natural resources is determined by the willing seller negotiating with the willing buyer, until they 0097-6156/85/0268-0009S06.00/0

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“…A investigação dos hábitos e comportamentos peculiares à tiririca, cujo conhecimento é indispensável para o estabelecimento de práticas eficientes de controle, tem sido objeto de várias pesquisas (1,2,6, 7,9, 10,17).…”

Section: -Introduçãounclassified

“…Há vários dados experimentais evidenciando que a tiririca é afetada pela falta de luz, ficando prejudicada no seu desenvolvimento quando vegetando em locais insuficientemente iluminados (2,6,9,17).…”

Section: -Introduçãounclassified

Observações sôbre o efeito da luz no crescimento da tiririca, Cyperus rotundus L.

Magalhães

1967

Bragantia

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SINOPSEForam estudados: os efeitos do sombreamento de tiririca (Cyperus rotundus L.), no campo, com plantas de Canavalia ensiformis D.C.; a ação de luz artificial; o ponto de compensação de luz. o sombreamento reduziu drasticamente a multiplicação dos tubérculos. Plantas mantidas com luminosidade artificial de 15% da radiação solar tiveram o desenvolvimento subterrâneo muito prejudicado. A capacidade vegetativa da tiririca mostrou-se reprimida sòmente com redução acentuada da luminosidade. -INTRODUÇÃOApesar das inúmeras tentativas de controle químico, mecâ-nico, cultural e de outras naturezas (5,8, 12, 14, 15, 16), até o presente as perspectivas para o combate da tiririca não têm sido muito animadoras. Se bem que alguns resultados já foram obtidos com o emprego de herbicidas, sua utilização, em termos econômicos, nem sempre é viável.A investigação dos hábitos e comportamentos peculiares à tiririca, cujo conhecimento é indispensável para o estabelecimento de práticas eficientes de controle, tem sido objeto de várias pesquisas (1,2,6, 7,9, 10,17).Há vários dados experimentais evidenciando que a tiririca é afetada pela falta de luz, ficando prejudicada no seu desenvolvimento quando vegetando em locais insuficientemente iluminados (2, 6, 9, 17).( 1 ) Recebido para publicação em 18 de outubro de 1966.

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Establishment of Nutsedge from Space-Planted Tubers

Cited by 49 publications

References 0 publications

Assessment of Tuber Viability and Sprouting Behavior of Purple Nutsedge (Cyperus rotundus) - A Prelude Study for Control of World Worst Weed

Assessment of Tuber Viability and Sprouting Behavior of Purple Nutsedge (Cyperus rotundus) - A Prelude Study for Control of World Worst Weed

Economics of Weed Control in Crops

Observações sôbre o efeito da luz no crescimento da tiririca, Cyperus rotundus L.

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