Response of Spring Wheat to the Application of 2,4‐d at Various Growth Stages*

Pinthus, M. J.; Natowitz, Y.

doi:10.1111/j.1365-3180.1967.tb01358.x

Cited by 17 publications

(10 citation statements)

References 5 publications

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“…Embryos of the size that exist in mature wheat seeds were not present, but it could not be determined if smaller underdeveloped embryos were present. Reports indicate that growth-regulator herbicides may affect meiotic cell division in the pollen and egg mother cells (Pinthus and Natowitz 1967). One report suggests that dicamba may affect assimilate supply to the developing seeds (Tottman and Duval 1987).…”

Section: Resultsmentioning

confidence: 99%

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹

Rinella¹,

Kells

Ward³

2001

Weed Technology

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Dicamba is a herbicide used for the control of broadleaf weeds in wheat. Dicamba, applied within the recommended growth stage interval, reduced the grain yield of Wakefield winter wheat by 95% in a herbicide sensitivity study at Michigan State University. Growers have also reported yield loss when using dicamba on Wakefield. Field and greenhouse experiments were conducted to characterize the response of Wakefield winter wheat to dicamba and to compare this response to that of ‘Harus’ winter wheat, a cultivar that is not considered sensitive to dicamba. This research was conducted to characterize the sensitivity of Wakefield to dicamba and to develop visual methods for detecting sensitivity of wheat cultivars to dicamba. Field experiments confirmed that dicamba affects the number of spikelets and the seed weight of Harus and Wakefield similarly. However, dicamba, applied within the recommended application interval, caused small, shriveled (underdeveloped) seeds to occur in Wakefield in the field and greenhouse. These seeds weighed very little, did not contribute to grain yield, and could not be harvested mechanically. Dicamba reduced the number of fully developed seeds of Wakefield by as much as 62% in the field and 92% in the greenhouse when applied within the recommended application interval. The number of fully developed seeds of Harus was reduced in the field only when dicamba was applied later than the recommended application interval. Decreases in grain yield due to dicamba were caused primarily by decreases in the number of fully developed seeds. Greenhouse experiments indicated that pollen abnormalities were only a minor cause of the development of underdeveloped seeds.

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Section: Resultsmentioning

confidence: 99%

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹

Rinella¹,

Kells

Ward³

2001

Weed Technology

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“…O efeito do 2,4-D amina no número de grãos/panícula se deve a interferências na esporogênese (diferenciação floral). Em trigo, vários autores comprovaram essa hipótese (Derscheid, 1951;Olson et al, 1951;Longchamp et al, 1952;Pinthus & Natowitz, 1967). Em arroz provavelmente ocorra o mesmo.…”

Section: Resultsunclassified

Seletividade de herbicidas aplicados em diferentes estádios de desenvolvimento da cultura do arroz de terras altas

Cobucci

Portela

2001

Planta daninha

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Foram conduzidos quatro experimentos de campo, sendo dois no município de Santo Antônio de Goiás-GO e dois no município de Santa Helena de Goiás-GO, nos anos agrícolas de 1998/1999 e 1999/2000, com o objetivo de avaliar a seletividade de herbicidas para a cultura do arroz de terras altas em diferentes estádios da planta, dos cultivares Maravilha, Primavera e Canastra. Os tratamentos foram: metsulfuron-methyl (2,4 g i.a. ha-1) aos 10 e 20 dias após a emergência (DAE); 2,4-D amina (335, 502 e 670 g i.a ha-1) aos 10, 20 e 30 DAE; fenoxaprop-p-ethyl (41,4 g i.a. ha-1) aos 10, 20 e 30 DAE; e clefoxydin (120 g i.a. ha¹) aos 10, 20 e 30 DAE. A seletividade dos herbicidas dependeu do cultivar e do estádio de desenvolvimento da planta do arroz. Assim, os resultados permitem concluir que é recomendada para o cultivar Primavera a aplicação de metsulfuron-methyl aos 20 DAE e de fenoxaprop-p-ethyl e clefoxydin aos 30 DAE; o herbicida 2,4-D amina não é recomendado para este cultivar. Para o cultivar Maravilha, o metsulfuron-methyl e o fenoxaprop-p-ethyl podem ser aplicados em qualquer estádio do crescimento. Os herbicidas 2,4-D amina e clefoxydin são recomendados para aplicação aos 30 DAE. O cultivar Canastra apresentou alta resistência à aplicação dos herbicidas em todos os estádios de crescimento analisados.

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“…Much later applications of 2,4-D, at the late boot to heading stages, often lead to substantial yield depressions which are probably due to interference with sporogenesis (Derscheid, 1951 ;Olson, Zalik, Breakey & Brown, 1951 ;Longchamp, Roy & Gautheret, 1952 ;Pinthus & Natowitz, 1967). The benzoic acid herbicides, dicamba and z,3,6-TBA, can cause narrow ears with shrivelled grain when sprayed after 214 the beginning of jointing (Holroyd, 1962;Friesen, Baenziger & Keys, 1964; Munro, 1972).…”

Section: Introductionmentioning

confidence: 99%

The identification of growth stages in winter wheat with reference to the application of growth‐regulator herbicides

Tottman

1977

Annals of Applied Biology

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in early spring was studied in order to relate the progress of apical differentiation to easily measured external characters and so provide a guide to the correct timing of herbicide applications. Leaf sheath lengths were more closely related to apical development than were tiller or leaf numbers. Spikelet differentiation occurred when the longest sheaths were c. 5 cm tall. Application of a growth regulator herbicide before this stage of development caused ear deformities in the crop at harvest. A measure of leaf sheath length might, therefore, replace the ambiguous criteria presently used to judge the stages of winter wheat most tolerant of herbicides.

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Response of Spring Wheat to the Application of 2,4‐d at Various Growth Stages*

Cited by 17 publications

References 5 publications

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹

Seletividade de herbicidas aplicados em diferentes estádios de desenvolvimento da cultura do arroz de terras altas

The identification of growth stages in winter wheat with reference to the application of growth‐regulator herbicides

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Response of Spring Wheat to the Application of 2,4‐d at Various Growth Stages*

Cited by 17 publications

References 5 publications

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba1

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba1

Seletividade de herbicidas aplicados em diferentes estádios de desenvolvimento da cultura do arroz de terras altas

The identification of growth stages in winter wheat with reference to the application of growth‐regulator herbicides

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Product

Resources

About

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹

Response of ‘Wakefield’ Winter Wheat (Triticum aestivum) to Dicamba¹