Sweet Corn Hybrid Sensitivity to Clopyralid

2005 ◽  
Vol 19 (2) ◽  
pp. 342-345 ◽  
Author(s):  
Nader Soltani ◽  
Shane Diebold ◽  
Darren E. Robinson ◽  
Peter H. Sikkema
Keyword(s):  
Plant Height ◽  
Detrimental Effect ◽  
Field Experiments ◽  
Sweet Corn ◽  
Yield Response ◽  
Limited Information ◽  
Marketable Yield ◽  
Corn Hybrids ◽  
Growing Conditions ◽  
Corn Hybrid

Limited information exists on sweet corn tolerance to postemergence (POST) applications of clopyralid under Ontario growing conditions. Eight sweet corn hybrids were evaluated for tolerance to clopyralid in three field experiments conducted in 2001 and 2002 in Ontario. Clopyralid was applied POST at 200 and 400 g ai/ha, the proposed and twice the proposed registered rate for use in sweet corn in Ontario. Sweet corn response to clopyralid did not vary among the hybrids tested. In 2001, visual injury among hybrids 7 d after treatment (DAT) with clopyralid at 400 g/ha was less than 3%. Subsequent visual injury evaluations at 14 and 28 DAT showed no differences among sweet corn hybrids at either rate of clopyralid evaluated. The application of clopyralid at 200 and 400 g/ ha had no detrimental effect on plant height or marketable yield of any of the eight sweet corn hybrids. On the basis of visual injury, height, and marketable yield response ‘Calico Belle’, ‘CNS 710’, ‘DelMonte 2038’, ‘GG 222’, ‘GG 246’, ‘GH 2684’, ‘Reveille’, and ‘Rival’ are all tolerant to the POST application of clopyralid.

scholarly journals Sweet Corn Hybrid Responses to Thifensulfuron-methyl

HortScience ◽  
2005 ◽  
Vol 40 (5) ◽  
pp. 1381-1383 ◽  
Author(s):  
Nader Soltani ◽  
Peter H. Sikkema ◽  
Darren E. Robinson
Keyword(s):  
Weed Management ◽  
Field Experiments ◽  
Sweet Corn ◽  
Yield Reduction ◽  
Limited Information ◽  
Corn Hybrids ◽  
Height Reduction ◽  
Effect On Yield ◽  
Growing Conditions ◽  
Corn Hybrid

Limited information exists on sweet corn (Zea mays) tolerance to postemergence (POST) applications of thifensulfuron-methyl under Ontario growing conditions. Eight sweet corn hybrids were evaluated for tolerance to thifensulfuron-methyl in four field experiments conducted in 2003 and 2004. Thifensulfuron-methyl was applied POST at 6 and 12 g·ha–1 a.i., the registered and twice the registered rate for use in soybean in Ontario. Sweet corn hybrid responses to thifensulfuron-methyl varied. Delmonte 2038 was the most sensitive to thifensulfuron-methyl and had as much as 92% visual injury, 76% height reduction, and 98% yield reduction compared to the nontreated control. Empire, GH1861, GH2298, and GH2684 hybrids showed visual injury of 53%, 55%, 53%, and 61%, height reduction of 34%, 31%, 32%, and 26% and yield reduction of 77%, 68%, 68%, and 51%, respectively. GG214, GH2547, and GSS9299 sweet corn hybrids were not as sensitive to thifensulfuron-methyl. The initial sensitivity observed in these hybrids was minimal and transient with no effect on yield. Although thifensulfuron-methyl is safe for use on some sweet corn hybrids, it has the potential to cause severe crop injury and yield reduction in other hybrids and therefore it should not be recommended for weed management in sweet corn production in Ontario.

Sweet Corn Cultivar Sensitivity to Bentazon

2004 ◽  
Vol 18 (4) ◽  
pp. 982-987 ◽  
Author(s):  
Shane Diebold ◽  
Darren Robinson ◽  
John Zandstra ◽  
John O'Sullivan ◽  
Peter H. Sikkema
Keyword(s):  
Plant Height ◽  
Field Experiments ◽  
Sweet Corn ◽  
The Other ◽  
Leaf Damage ◽  
Marketable Yield ◽  
Untreated Check

Five sweet corn cultivars were evaluated for tolerance to bentazon in five field experiments conducted during 2 yr in Ontario. Bentazon was applied postemergence (POST) at 1.08 and 2.16 kg ai/ha, the highest registered rate and twice the highest registered rate, respectively, used in sweet corn in Ontario. When bentazon was applied POST at 1.08 and 2.16 kg/ha to sweet corn cultivar ‘DelMonte 2038’, injury included plant stunting and leaf damage ranging from 6 to 69% and 15 to 90%, respectively. Plant height was reduced to 48 and 100% of the untreated check when treated with bentazon at 1.08 and 2.16 kg/ha, respectively. The visual injury and height reductions were reflected in the marketable yields, which were reduced to 94% when treated with bentazon. Significant reductions in height and marketable yield were not observed in the other four cultivars tested. No correlation was observed between bentazon sensitivity and endosperm genotype. Based on visual injury ratings, sweet corn height, and marketable yield, it was concluded that ‘Calico Belle’, ‘GH 2684’, ‘Reveille’, and ‘Rival’ are tolerant to POST application of bentazon.

scholarly journals Crisphead Lettuce Cultivar Response to Fertilizer Phosphorus

1992 ◽  
Vol 117 (5) ◽  
pp. 721-724 ◽  
Author(s):  
R.T. Nagata ◽  
C.A. Sanchez ◽  
F.J. Coale
Keyword(s):  
Total Mass ◽  
Field Experiments ◽  
P Uptake ◽  
Yield Response ◽  
Marketable Yield ◽  
Fertilizer Recommendations ◽  
P Fertilizer ◽  
P Rate ◽  
Growing Conditions ◽  
The One

Four field experiments were conducted during 1988 to 1990 to evaluate the response to fertilizer P of six crisphead lettuce (Latuca sativa L.) cultivars grown on Histosols. There were season × cultivar interactions for total mass produced, marketable yield, and P uptake by lettuce. A significant yield response to fertilizer P was demonstrated during all four seasons. The performance of individual cultivars within a given season led to cultivar × P rate interactions for marketable yield. However, there were no significant P rate × cultivar interactions for total mass produced, P uptake, and marketable yield during the one season when growing conditions were near ideal. Calculated critical soil-test P values for both eastern and western lettuce types produced in Florida were all within error currently associated with P fertilizer recommendations for lettuce produced in Florida. Therefore, we conclude that no immediate change in P fertilizer recommendations is required for the new western-type lettuce cultivars produced on Histosols in Florida.

scholarly journals Response of Eight Sweet Corn (Zea mays L.) Hybrids to Topramezone

HortScience ◽  
2007 ◽  
Vol 42 (1) ◽  
pp. 110-112 ◽  
Author(s):  
Nader Soltani ◽  
Peter H. Sikkema ◽  
John Zandstra ◽  
John O'Sullivan ◽  
Darren E. Robinson
Keyword(s):  
Zea Mays ◽  
Plant Height ◽  
Weed Management ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Marketable Yield ◽  
Corn Hybrids ◽  
Field Corn ◽  
Initial Sensitivity

Topramezone is a newly introduced herbicide for use in field corn (Zea mays L.) that may have potential for weed management in sweet corn. Tolerance of eight sweet corn hybrids to topramezone applied postemergence (POST) at 0, 50, 75, 100, 150, and 300 g a.i. ha− 1 were studied at one Ontario location in 2000 and two locations in 2001 and 2002. Topramezone applied POST at 50, 75, 100, and 150 g·ha− 1 did not cause any visual injury in Calico Belle, CNS 710, Delmonte 2038, FTF 222, FTF 246, GH 2684, Reveille, and Rival sweet corn hybrids at 7 days after treatment (DAT) and caused minimal injury (less than 5%) at 300 g·ha− 1 in all hybrids. The initial sensitivity observed in these hybrids was minimal and transient with no effect on visual injury at 14 and 28 DAT. Topramezone applied POST did not reduce plant height, cob size, or marketable yield of the sweet corn hybrids included in this study. Based on these results, topramezone applied POST at the rates evaluated can be safely applied to Calico Belle, CNS 710, Delmonte 2038, FTF 222, FTF 246, GH 2684, Reveille, and Rival sweet corn.

scholarly journals Yield response of summer country bean to boron and molybdenum fertilizer

2015 ◽  
Vol 40 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Shamima Nasreen ◽  
MA Siddiky ◽  
R Ahmed ◽  
RP Rannu
Keyword(s):  
Significant Influence ◽  
Detrimental Effect ◽  
Field Experiments ◽  
Agricultural Research ◽  
Yield Response ◽  
Agricultural Research Institute ◽  
Pod Yield ◽  
Four Levels ◽  
Fertilizer Combination ◽  
Higher Doses

Field experiments were conducted in the Grey Terrace Soil (Aeric Albaquept) under AEZ-28 at the Bangladesh Agricultural Research Institute (BARI) farm, Gazipur during summer seasons of 2010 and 2011 to determine the optimum rate of boron and molybdenum combination for maximizing the yield of summer country bean (var. BARI Sheem-3). Four levels each of B (0, 1, 2 and 3 kg ha-1 ) and Mo (0, 0.5, 1.0 and 1.5 kg ha-1 ) were used as treatment variables. The results indicated that application of B and Mo fertilizer combination exerted significant influence on the number of pods plant-1 , individual pod weight and pod yield ha-1 in both the years. The highest pod yield (9.58 t ha-1 in 2010 and 9.42 t ha-1 in 2011) was produced by the combination of 2 kg B and 1.5 kg Mo ha-1 and it was statistically identical with 2 kg B and 1.0 kg Mo ha-1 combination. Addition of B beyond 2 kg ha-1 along with higher doses of Mo created a detrimental effect to reduce yield irrespective of years. The results revealed that application of 2 kg B and 1 kg Mo ha-1 combination with a blanket dose of 50 kg N, 40 kg P, 60 kg K and 20 kg S ha-1 plus cowdung 5 t ha-1 might be optimum for summer country bean cultivation in Grey Terrace Soil of Gazipur.Bangladesh J. Agril. Res. 40(1): 71-76, March 2015

scholarly journals Variability assessment of productivity traits and quality of berries in the genetic collection of garden strawberry (Fragaria ananassa Duch.) in the Orenburg region

2021 ◽  
Vol 845 (1) ◽  
pp. 012015
Author(s):  
E V Aminova ◽  
R R Salimova ◽  
O E Merezhko
Keyword(s):  
Field Experiments ◽  
Sugar Content ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Average Weight ◽  
Marketable Yield ◽  
Berry Quality ◽  
Growing Conditions ◽  
Productivity Potential

Abstract Nowadays the study of the interrelation of the genotype of strawberry plants in garden and climatic conditions is extremely relevant. Due to the various systems of genetic control and the modifying effects of growing conditions on the manifestation of quantitative traits, there is the need to assess the genotypic variability of economically valuable features, focused on the identification of genotypes characterized by stability and adaptive qualities in growing conditions. The study examined 15 varieties of garden strawberries of domestic and foreign selection. The field experiments and surveys were carried out according to the Program generally accepted in the Russian Federation and methodology for the variety study of fruit, berry and nut crops. We studied such features as the number of peduncles (pcs/bush), number of berries (pcs/bush), average weight of berries (g), total and marketable yield (g/bush), sugar content in berries, soluble solids and ascorbic acid. The purpose of this work was to assess the genotype-year interrelation in terms of the variability of productivity features and berry quality and to identify strawberry varieties with a stable genotype. As a result of two-way analysis of variance for the variety-year interrelation, the obtained values were 1.10-8.50 at standard Fst. - 1.24. Statistically important differences had indicators of productivity of a bush between the first and second clusters (t = 5.89 at p <0.01), the first and third (t = 15.83 at p <0.01), the second and third clusters (t = 8.13 at p <0.01), as well as the average berry weight between the first and third, second and third clusters (t = 15.50 and 6.99 at p <0.01, respectively). Significant differences in the value of the Euclidean distance were revealed for varieties Mishutka (54.5), Daryonka (54.5), Pervoklassnitsa (58) realizing their productivity potential in different years of cultivation.

Differential Butylate Injury to Corn Hybrids

Weed Science ◽  
1973 ◽  
Vol 21 (3) ◽  
pp. 194-196 ◽  
Author(s):  
T. H. Wright ◽  
C. E. Rieck
Keyword(s):  
Zea Mays ◽  
South Carolina ◽  
Field Experiments ◽  
Laboratory Studies ◽  
Corn Hybrids ◽  
Corn Hybrid

Injury to corn (Zea maysL.) fromS-ethyl diisobutylthiocarbamate (butylate) was investigated with respect to hybrid. Field experiments in 1971 at Dillon and Clemson, South Carolina, established that the corn hybrid ‘Coker 71’ was more tolerant to butylate than ‘Pioneer 511A’. Also established as being tolerant and sensitive to butylate were the hybrids ‘Pioneer 3030’ and ‘PAG 644’, respectively. Laboratory studies with14C-butylate showed that the resistant hybrid ‘Pioneer 3030’ took up less14C-butylate and metabolized more to14CO2than did ‘PAG 644’.

scholarly journals Stability and Adaptability of Yield among Earliness Sweet Corn Hybrids in West Java, Indonesia

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Dedi Ruswandi ◽  
Yuyun Yuwariah ◽  
Mira Ariyanti ◽  
Muh Syafii ◽  
Anne Nuraini
Keyword(s):  
Sweet Corn ◽  
Smallholder Farmers ◽  
West Java ◽  
Corn Hybrids ◽  
Stability Parameters ◽  
The Stability ◽  
On Farm ◽  
Main Effects ◽  
Gge Biplots ◽  
Corn Hybrid

Multienvironment testing is an important phase to study the interaction of G × E and to select stable hybrids for a broad environment or for a specific environment. To study the interaction of G × E and the stability of earliness and yield of Indonesian new sweet corn hybrids under different locations and seasons in West Java, Indonesia, eighteen hybrids were evaluated in six environments in West Java, Indonesia, and were analysed using parametric and nonparametric stability models, additive main effects and multiplicative interaction (AMMI), and GGE biplots. Results showed that the most promising sweet corn hybrids including hybrids G5 (SR 24 x SR 17) and G11 (SR 31 x SR 17) were identified. The parametric and nonparametric stability parameters and ASV were complement to the AMMI and GGE biplots in selecting stable and adaptable hybrids in terms of earliness and yield. G5 was selected as a high-response hybrid for grain yield to Jatinangor (E1, E2), Lembang (E3, E4), and Wanayasa (E5, E6), as well as earliness to Jatinangor (E2), Lembang (E3, E4), and Wanayasa (E5, E6). G5 sweet corn hybrid, therefore, is suggested to be extensively evaluated on farm and produced for smallholder farmers in West Java, Indonesia.

Combined Effects of Acetolactate Synthase-Inhibiting Herbicides with Terbufos and Piperonyl Butoxide on Corn (Zea mays) and Soybean (Glycine max)

1995 ◽  
Vol 9 (4) ◽  
pp. 696-702 ◽  
Author(s):  
Chae Soon Kwon ◽  
James J. Kells ◽  
Donald Penner
Keyword(s):  
Combination Treatment ◽  
Field Experiments ◽  
Acetolactate Synthase ◽  
Field Studies ◽  
Piperonyl Butoxide ◽  
Corn Hybrids ◽  
Combination Treatments ◽  
Imidazolinone Herbicides ◽  
Als Inhibitor ◽  
Corn Hybrid

Greenhouse studies were conducted to determine the response of six corn hybrids and two soybean varieties to acetolactate synthase (ALS) inhibitor herbicides applied with terbufos and/or piperonyl butoxide (PBO), a mixed function oxidase (MFO) inhibitor. Field experiments also were conducted to determine the response of six corn hybrids to the combination treatments, terbufos plus ALS inhibitor herbicides and/or PBO and/or antidote. PBO at 0.33 kg/ha tank-mixed with nicosulfuron and primisulfuron injured the Northrup King 9283 corn hybrid. Great Lakes 584 corn was less sensitive than Northrup King 9283 to these combination treatments. Pioneer 3377 IR corn hybrid was resistant to the combination of nicosulfuron or primisulfuron plus PBO at 2 kg/ha and also to the combination treatments of imazethapyr herbicide plus PBO even though terbufos was previously applied. ICI 8532 IT, ICI 8532, and Pioneer 3377 hybrids were injured by the combination of nicosulfuron or primisulfuron and/or terbufos and/or PBO at 2 kg/ha. ICI 8532 IT corn hybrid was not injured by the combination treatment of imazethapyr or thifensulfuron and terbufos. In the field studies, Pioneer 3377 IR and Ciba 4393 RSC hybrids were resistant to sulfonylurea and imidazolinone herbicides even when applied with PBO regardless of the presence of terbufos. All treatments of chlorimuron plus terbufos caused considerable injury to ICI 8532 IT, ICI 8532, Pioneer 3377, and Ciba 4393, but not Pioneer 3377 IR and Ciba 4393 RSC. The combination of thifensulfuron with PBO injured Elgin ‘87 soybean, but the W20 soybean was tolerant to this combination treatment. Combination of imazethapyr with PBO did not affect the growth of Elgin ‘87 soybean.

scholarly journals Tolerance of Eight Sweet Corn (Zea mays L.) Hybrids to Pyroxasulfone

HortScience ◽  
2008 ◽  
Vol 43 (1) ◽  
pp. 170-172 ◽  
Author(s):  
Sarah R. Sikkema ◽  
Nader Soltani ◽  
Peter H. Sikkema ◽  
Darren E. Robinson
Keyword(s):  
Zea Mays ◽  
Plant Height ◽  
Weed Management ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Corn Hybrids ◽  
Field Corn

Pyroxasulfone is an experimental herbicide for use in field corn (Zea mays L.) and soybean that may have potential for weed management in sweet corn. Tolerance of eight sweet corn hybrids to pyroxasulfone applied preemergence (PRE) at rates of 0, 209, and 418 g·ha−1 a.i. were studied at two Ontario locations in 2005 and 2006. Pyroxasulfone applied PRE at 209 and 418 g·ha−1 caused minimal (less than 3%) injury in Harvest Gold, GH2041, GH9589, GSS9299, GG214, GG446, GG763, and GG447 sweet corn hybrids at 7, 14, and 28 days after emergence. Pyroxasulfone applied PRE did not reduce plant height, cob size, or yield of any of the sweet corn hybrids tested in this study. Based on these results, pyroxasulfone applied PRE at the rates evaluated can be safely used for weed management in Harvest Gold, GH2041, GH9589, GSS9299, GG214, GG446, GG763, and GG447 sweet corn.

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