Treating Irrigated Grain Sorghums With Pre‐Emergence Herbicides<sup>1</sup>

Wiese, A. F.; Rea, H. E.

doi:10.2135/cropsci1962.0011183x000200010009x

Cited by 9 publications

(8 citation statements)

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“…Work with preliminary preemergence herbicides proved unsatisfactory because of poor weed control or excessive crop injury. Investigations in Texas (10), however, indicated that sorghum tolerated propazine better than any other of several herbicides studied. In Nebraska, Burnside and Wicks (I) showed 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), when applied before emergence, produced more effective weed control than propazine but indicated it might cause injury to sorghum in coarse-textured soils (2).…”

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confidence: 85%

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹

Miller¹,

Bovey

1969

Agronomy Journal

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We evaluated 40 varieties of Sorghum bicolor (L.) Moench representing 27 diverse subclassification groups for tolerance to herbicides. Sorghums studied included commercial varieties from the continental United States and cultivars which have not reached the temperate zone. These sorghums were developed or originated in the USA, India, China and seven African countries. Clay soil and sand were treated with 3.2, 9.6 and 28.8 ppm of 2‐chloro‐4,6‐bis(isopropylamino,‐s‐triazine (propazine), 3‐(hexahydro‐4,7‐methanoindan‐5‐yl)‐lmethylurea (norea), 2‐tert butylamino‐4‐ethylamino‐6‐methylthio‐s‐triazine (GS‐14260), 3‐(3,4‐dichlorophenyl)‐I‐methoxy‐l‐methylurea (linuron) and 2‐chloro‐N‐isopropylacetanilide (propachlor). Herbicides differed significantly in the amount of injury caused to sorghum. The following relationships were found in order of increasing damage: propachlor, 10.5%; propazine, 35.7%; norea, 50.0%; GS‐14260, 59.5%; and linuron, 72.4%. Sorghum varieties which produced well in untreated herbicide media also produced best in herbicide‐treated media. Varieties ‘IS 7363’ and ‘PI 285042’ were consistently most tolerant regardless of herbicide. Varieties that ranked in the top 12.5% of the control were not killed by the various herbicides unless all varieties were destroyed. Response to herbicides does not appear to be inherited simply, although differences in tolerance do exist. Dry weight frequency distributions for response to each herbicide indicate near normal curves. Tolerance to herbicides was most evident in the caudatum, durra, and conspicuum groups. Herbicide tolerance was more pronounced in sorghums from equatorial Africa than from the areas where varieties have been developed through intensive breeding programs.

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confidence: 85%

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹

Miller¹,

Bovey

1969

Agronomy Journal

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“…will produce more than 2,200 kg of dry matter per hectare and that each 100 kg of this growth reduced sorghum grain yield 64 kg/ha. Several re searchers have illustrated the benefits derived from controlling grasses in sorghum with herbicides (2,3,4,7,10,11,12).…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of a New Safener for Protecting Sorghum (Sorghum bicolor) from Metolachlor Injury

Ellis¹,

Peek²,

Boehle³

et al. 1980

Weed sci.

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A herbicide safener, CGA-43089 [α-(cyanomethoximino)-benzacetonitrile], has been discovered which will allow the safe use of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethylacetamide] in grain sorghum [Sorghum bicolor(L.) Moench]. Experiments revealed that sorghum is protected from injury by metolachlor when it is applied at rates as high as 4 kg/ha. Better protection was achieved when sorghum seed were treated directly with the safener than when it was mixed with the herbicide. A CGA-43089 rate of 1.25 to 1.5 g per kg of sorghum seed was adequate for protection. Sorghum tolerance to metolachlor was maintained with CGA-43089 when metolachlor was combined with severals-triazine herbicides. Metolachlor effectively controlled several annual grasses with an increase in sorghum yield.

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“…Herbicides have been widely used for weed control in sorghum because they give effective and economical con trol of early weeds (3,4,5). However, the margin of selec tivity of herbicides on sorghum has been rather narrow especially on coarse textured and low organic matter soils.…”

Section: Introductionmentioning

confidence: 99%

Competitiveness and Herbicide Tolerance of Sorghum Hybrids

Burnside

Wicks

1972

Weed sci.

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The competitiveness of 10 sorghum [Sorghum bicolor(L.) Moench] hybrids to weeds and their tolerances to commonly used sorghum herbicides were studied across Nebraska. The three best weed competitors in this study were sorghum hybrids ‘RS 671′, ‘RS 690′, and ‘AKS 663′; whereas the three poorest weed competitors were ‘AKS 614′, ‘NB 505′, and ‘RS 633′. Sorghum hybrids showing a significant yield reduction from a 2× rate of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) were ‘SD 441′, ‘SD 451′, and ‘NB 505′. ‘SD 441 also suffered a significant yield reduction from a normal rate of 2-chloro-N-isopropylacetanilide (propachlor) applied preemergence plus a 4× rate of (2,4-dichlorophenoxy)acetic acid (2,4-D) applied postemergence. With the above exceptions, sorghum hybrids generally showed considerable tolerance to 2× rates of herbicides commonly used on sorghum.

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Treating Irrigated Grain Sorghums With Pre‐Emergence Herbicides¹

Cited by 9 publications

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Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹

Effectiveness of a New Safener for Protecting Sorghum (Sorghum bicolor) from Metolachlor Injury

Competitiveness and Herbicide Tolerance of Sorghum Hybrids

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Treating Irrigated Grain Sorghums With Pre‐Emergence Herbicides1

Cited by 9 publications

References 0 publications

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides1

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides1

Effectiveness of a New Safener for Protecting Sorghum (Sorghum bicolor) from Metolachlor Injury

Competitiveness and Herbicide Tolerance of Sorghum Hybrids

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Product

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Treating Irrigated Grain Sorghums With Pre‐Emergence Herbicides¹

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹

Tolerance of Sorghum bicolor (L.) Moench to Several Herbicides¹