EFFECT OF GROWTH REGULATORS ON CYNODON DACTYLON (L.) PERS., SORGHUM HALEPENSE (L.) PERS, AND CYPERUS ROTUNDUS L.*

Horowitz, M.

doi:10.1111/j.1365-3180.1972.tb01182.x

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…Daylength does not affect tuberization dra matically in purple nutsedge as it does in yellow nutsedge (16,22,62,63). Horowitz (23) found natural daylength had no effect on tuberization in purple nutsedge and suggested that a minimum temperature of 20 C was necessary to stimulate the process.…”

Section: Tuber Biologymentioning

confidence: 99%

“…Their rela tively short growth habit usually relegates them to the shade. Both yellow and purple nutsedge grow best under high soil moisture, high fertility (6,33), and high temperatures (9,22,65); those are conditions enhanced by growers to produce crops.…”

Section: Whole Plant Biologymentioning

confidence: 99%

“…In purple nut sedge, tuberization can begin within 17 days after shoot emergence (14), but dormant tubers are not found until 8 weeks after emergence (18). Purple nutsedge tuberization apparently can occur all year in tropical climates (16,22). By the time tuberization occurs, the plant complex usually includes many aerial shoots interconnected by rhizomes that are capable of diverting resources into tubers.…”

Section: Life Cyclementioning

confidence: 99%

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Biology and Life Cycle of Purple and Yellow Nutsedges (Cyperus rotundusandC. esculentus)

Stoller¹,

Sweet²

1987

Weed technol.

116

117

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Yellow and purple nutsedges (Cyperus esculentusL. # CYPES andC. rotundusL. # CYPRO) are herbaceous perennial weeds that are among the worst pests known. Holm et al. list purple nutsedge as the world's worst weed and yellow nutsedge as the sixteenth worst weed. Both weeds infest crop production areas in tropical and temperate climates, causing large losses in crop yields. While both species proliferate in the warm regions of the world, yellow nutsedge inhabits a wider range than purple nutsedge in the temperate areas, primarily because yellow nutsedge can tolerate colder temperatures. With such an extended range of habitation, many ecotypic variations of these species would be expected since they likely have adjusted to a multitude of local environments.

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Section: Tuber Biologymentioning

confidence: 99%

Section: Whole Plant Biologymentioning

confidence: 99%

Section: Life Cyclementioning

confidence: 99%

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Biology and Life Cycle of Purple and Yellow Nutsedges (Cyperus rotundusandC. esculentus)

Stoller¹,

Sweet²

1987

Weed technol.

116

117

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“…Daminozide (B-9) appeared consistently to reduce tuber number and increased tuber germination substantially. The related B-995 had very little effect on nutgrass in trials reported by Horowitz (1972a). He also reported that the morphactins were of limited effectiveness.…”

Section: Discussionmentioning

confidence: 99%

Experiments with Cyperus rotundus L. II. Effects of some herbicides and growth regulators

Hammerton¹

1975

Weed Research

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Summary: Résumé: Zusammenfassung Soil‐incorporated butylate, EPTC and vernolate had only small effects on nutgrass (Cyperus rotundus L.) shoot numbers and the germination of recovered tubers. MSMA, 2,4‐D, glyphosate and cyperquat all killed top growth and reduced the germination of recovered tubers in both field and pot trials. Naptalam increased shoot number and tuber production. Foliar sprays of abscisic acid, chlorflurenoi and CCDP (3‐carboxy‐1‐(p‐chlorophenyl)‐4,6‐dimethyl‐2‐pyridone) had little or no effect. Ethephon slightly increased the number of attached tubers with shoots, but NIA 10637 (.ethyl hydrogen‐1‐propylphosphonate) had inconsistent efl'ects. MH inhibited tuber bud germination, TIBA increased shoot numbers slightly, and daminozide reduced tuber production and the germination of detached tubers. None of the growth regulators tested appears potentially useful for nutgrass control. Expériences avec le Cyperus rotundus L. II. Action de quelques herbicides et substances de croissance Le butylate, l'EPTC et le vernolate incorporés au sol n'ont eu que peu d'efficacité contre le cyperus (Cyperus rotundus L.) en ce qui concerne le nombre de pousses et la germination des tubercules récoltés. Le MSMA, le 2,4‐D, le glyphosate et le cyperquat ont tous détruit la zone terminale de croissance et réduit significativement la germination des tubercules récoltés dans les essais, soit au champ, soit en pots. Le naptalame a augmenté le nombre de pousses et la production de tubercules. Des pulvérisations sur les feuilles d'acide abscissique, de chlorflurénol et de CCDP (3‐carbo.xy‐1‐(p‐chlorophényl)‐4,6‐diméthyl‐2‐pyridone) n'a eu que peu ou pas d'effets. L'ethéphon a légérement accru le nombre de tubercuies fixés aux racines, mais le NIA 10637 (hydrogéne‐1‐propylphosphonate d'éthyle) n'a eu que des effets incohérents. L'hydrazide maléique a inhibé la germination du bourgeon du bulbe, le TIBA a accru légérement le nombre de pousses, et le daminozide a réduit la production des tubercules et la germination des tubercules détachés. Aucune des substance de croissance essayées n'apparait potentiellement utilisable pour la lutte contre le cyperus. Versuche mit Cyperus rotundus L. II. Wirkung einiger Herbizide und Wachstumsregulatoren In den Boden eingearbejtetes Butylat, EPTC und Vernolat hatte nur eine geringe Wirkung auf die Anzahl der Sprosse und den Austrieb der Knollen von Cyperus rotundus L. MSMA, 2,4‐D, Glyphosate und Cyperquat toteten die oberirdischen Pflanzenteile ab und verringerten den Austrieb der Knollen in Feld‐ als auch in Gefässversuchen. Naptalam bewirkte eine Zunahme der Sprosszahl und erhöhte die Knollenbildung. Blattspritzungen mit Abscisinsäure, Chlorflurenoi und CCDP (3‐Carboxy‐1‐(p‐chlorphenyl)‐4,6‐di‐methyl‐2‐pyridon) hatten eine geringe oder gar keine Wirkung. Durch Ethephon nahm die Anzahl der Knollen mit Sprossen zu, NIA 10637 (Äthyl hydrogen‐1‐propylphospho‐nat) hingegen zeigte widersprüchliche Wirkungen. MH hemmte den Austrieb der KnoUenknospen, TIBA förderte leicht die Zahl der Sprosse und...

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“…), planta daninha perene, do grupo C 4 , com reprodução sexuada e vegetativa, é comum em países de clima tropical onde constitui problema sério em áreas agrícolas e industriais (HOROWITZ, 1972). A reprodução vegetativa é a mais importante forma de disseminação, pois tais estruturas são de fácil estabelecimento e de difícil controle, enquanto as sementes são produzidas esparsamente e sua germinação e emergência são baixas (SATORRE et al, 1996).…”

Section: Introductionunclassified

Efeito de extratos aquosos de estruturas de grama-seda no desenvolvimento inicial de plântulas de arroz, milho e trigo

et al. 2009

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RESUMOObjetivou-se verificar os efeitos de extratos aquosos de estruturas de grama-seda (Cynodon dactylon (L.) Pers) e de exsudatos radiculares presentes no solo no qual a planta se desenvolveu, sobre a germinação e o crescimento inicial de arroz, trigo e milho. O extrato aquoso das estruturas da parte aérea, subterrâneas e da planta inteira, assim como do estolão, da folha + colmo, estolão + folha + colmo, rizoma, raiz e de rizoma + raiz de grama-seda foi elaborado a partir de 100 g L -1 de material seco. Foram avaliados a protrusão da radícula e os crescimentos da radícula e da plúmula de cada espécie. A inibição ou o estímulo do desenvolvimento inicial de plântulas foi dependente da espécie avaliada e da estrutura vegetal empregada na elaboração do extrato. A protrusão da radícula foi mais inibida que os crescimentos da radícula e da plúmula. O estímulo do desenvolvimento da radícula e da plúmula foi mais evidente quando o extrato foi elaborado a partir das estruturas do sistema radicular, da parte aérea e da planta inteira que de estruturas individualizadas de grama-seda. De modo geral, o arroz e o milho foram mais inibidos por extratos elaborados a partir da parte aérea e subterrânea, respectivamente. Para o trigo, a inibição ou o estímulo foi dependente da variável analisada. O desenvolvimento da radícula e da plúmula de arroz, milho e trigo foi estimulado por extrato elaborado a partir da planta inteira. O extrato produzido a partir da fração argila + silte estimulou o desenvolvimento da radícula do milho e da plúmula do trigo. Palavras ABSTRACT EFFECTS OF AQUEOUS EXTRACTS OF BERMUDAGRASS STRUCTURES ON INITIAL GROWTH OF RICE, CORN AND WHEAT SEEDLINGSThe objective of this work was to study the effects of aqueous extracts of Bermudagrass structures (Cynodon dactylon (L.) Pers) and soil exudates, on the germination and initial growth of rice, corn and wheat seedlings. The aqueous extracts of above-ground and subterranean parts and of the whole plant, as well as of stolons, leaves + culm, stolons + leaves + culm, rhizome, root and rhizome + root of Bermudagrass, were prepared from 100 g L -1 of dry plant material. It was also investigated if these extracts and the one obtained from soil removed from the rhizosphere of the subterranean plant parts, and of the stolons would show any interference. Inhibition or stimulation of the initial seedling development was dependent on the tested species and the structure employed in the preparation of the extract. Radicle protrusion was inhibited more than radicle and plumule growth. The stimulus of radicle and plumule growth was more evident when the extract was prepared from the root system structures, above-ground plant parts and whole plant than from the separated plant structures of Bermudagrass. Rice and corn were more inhibited by extracts prepared from the above-ground and subterranean plant part respectively. Wheat inhibition or stimulation effects were dependent on the variable analysed. The development of radicle and plumule of rice, corn and wheat was stimula...

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EFFECT OF GROWTH REGULATORS ON CYNODON DACTYLON (L.) PERS., SORGHUM HALEPENSE (L.) PERS, AND CYPERUS ROTUNDUS L.*

Cited by 8 publications

References 11 publications

Biology and Life Cycle of Purple and Yellow Nutsedges (Cyperus rotundusandC. esculentus)

Biology and Life Cycle of Purple and Yellow Nutsedges (Cyperus rotundusandC. esculentus)

Experiments with Cyperus rotundus L. II. Effects of some herbicides and growth regulators

Efeito de extratos aquosos de estruturas de grama-seda no desenvolvimento inicial de plântulas de arroz, milho e trigo

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