USE OF SIMAZINE FOR CONTROL OF WEEDS IN STRAWBERRIES IN COASTAL BRITISH COLUMBIA

1964 ◽  
Vol 44 (6) ◽  
pp. 555-560
Author(s):  
Jack A. Freeman
Keyword(s):  
British Columbia ◽  
Weed Control ◽  
Crop Yield ◽  
Fruit Quality ◽  
Application Rate ◽  
The Other ◽  
Residual Effects ◽  
Late Winter ◽  
Coastal British Columbia ◽  
Yield Depression

A complete simazine schedule (4 applications) at 2 lb per acre per application over a 3-year period provided excellent weed control without adversely affecting the crop yield. One pound resulted in only slightly poorer weed control than the 2-lb rate; therefore, a [Formula: see text] per acre per application rate is suggested as being adequate. Some foliage injury and delay in runner production was evident from the simazine and solan treatments, the extent of which depended on the variety. An oat bioassay of the soil following the plowing under of the strawberry plants showed no residual effects. Late winter; (February) applications of IPC + DNBP caused yield reductions in the varieties British Sovereign, Siletz Puget Beauty, and Northwest No. 9, while January applications reduced yield only in British Sovereign. Neither solan nor sesone gave satisfactory weed control. Both herbicides caused some yield depression in the first fruiting year of British Sovereign and Puget Beauty, while the other varieties were not affected. Fruit quality was not affected by any treatment.

scholarly journals THE EFFECTS OF APPLYING PARAQUAT, ATRAZINE AND SIMAZINE FOR WEED CONTROL IN RASPBERRIES IN COASTAL BRITISH COLUMBIA

1967 ◽  
Vol 47 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Jack A. Freeman
Keyword(s):  
Ascorbic Acid ◽  
Weed Control ◽  
Ascorbic Acid Content ◽  
Early Spring ◽  
The Other ◽  
Leaf Injury ◽  
Excellent Control ◽  
Winter Annuals ◽  
Pre Treatment ◽  
Coastal British Columbia

Early spring and fall applications of a mixture of paraquat 2.2 kg and simazine 2.2 to 3.4 kg/ha repeated over a 3-year period provided excellent weed control without adversely affecting raspberry yield. Paraquat 2.2 kg/ha applied in April gave good broadleaf weed control for 2 months and fairly good grass control for 3 months. Fall applications suppressed grasses and controlled winter annuals through to spring. Combining paraquat with simazine eliminated the need for pre-treatment hoeing or cultivation and prolonged weed control. Atrazine 3.4 and 5.6 kg/ha applied in the spring resulted in excellent control of grass and broadleaf weeds. But, fall applications were not as effective for weed control as the paraquat and hoe-plus-simazine treatments. Atrazine 5.6 kg/ha caused chlorosis and necrosis of the raspberry leaves and reduced yields. Simazine, on the other hand, caused little or no leaf injury, but it also reduced yields at the 5.6-kg rate. Fruit quality was not affected significantly by any treatment, although atrazine and simazine tended to increase ascorbic acid content.

Response of forage grass to sulphur applications on coastal British Columbia soils

2004 ◽  
Vol 84 (2) ◽  
pp. 227-236 ◽  
Author(s):  
C. G. Kowalenko
Keyword(s):  
British Columbia ◽  
Time Trial ◽  
Field Trials ◽  
Winter Precipitation ◽  
Residual Effects ◽  
Control Treatment ◽  
Forage Grass ◽  
Soil Adsorption ◽  
S Uptake ◽  
Coastal British Columbia

Little is known about the S requirement of coastal British Columbia soils. Spring gypsum applications increased yield in two and decreased yield in one of six forage grass rate-of-application field trials. Yield effects did not occur at every cut. At the sites where yield depression was observed, the effect primarily occurred at the intermediate rates and S concentration increased with increased rate of application. Luxury uptake of S (increased S concentrations without a yield effect) showed residual effects occurred into the third season after application, despite the abundant winter precipitation common in the area. Yields were affected in a form × rate × time trial, but not at every cut. Powdered elemental S was available to plants sooner than Agri-Sul (an elemental S fertilizer), but neither as quickly as gypsum. Four of five traditional soil test S extractants were significantly correlated with first-cut uptake of S in the control treatment, with the bicarbonate extraction having the highest coefficient (r2= 0.29). The smaller amount of sulphate in calcium chloride compared to the other extractants showed soil adsorption. Soil S tests are required to manage S for optimum yield without accelerated soil acidification. Key words: S fertilizer forms, S rates, gypsum, elemental S fertilizer, Agri-Sul, plant S uptake, soil S tests

Weed Management in Peanuts

EDIS ◽  
2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Pratap Devkota
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Application Rate ◽  
Good Management ◽  
Peanut Production

Successful weed control in peanuts involves use of good management practices in all phases of peanut production. This 11-page document lists herbicide products registered for use in Florida peanut production, their mode of actions group, application rate per acre and per season, and reentry interval. It also discusses the performance of these herbicides on several weeds under Florida conditions. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

Gemmae in Tetralophozia setiformis (Anastrophyllaceae, Marchantiophyta) and their second record in Eurasia

2017 ◽  
Vol 51 ◽  
pp. 242-250
Author(s):  
M. V. Dulin
Keyword(s):  
British Columbia ◽  
Asexual Reproduction ◽  
Leaf Shape ◽  
Leaf Size ◽  
Komi Republic ◽  
The Other ◽  
Widespread Species ◽  
Northern Urals ◽  
Sexual And Asexual Reproduction ◽  
Murmansk Region

Tetralophozia setiformis is a widespread species occurring usually without organs of sexual and asexual reproduction. Gemmae of Tetralophozia setiformis were observed for the second time in Russia and Eurasia in the Northern Urals, Komi Republic. They form compact masses over upper leaves. The compact masses consist largely (70 %) of immature gemmae. Description of gemmae and gemmiparous shoots from the Northern Urals and their comparison with those from the other known localities, namely British Columbia (Canada) and the Murmansk Region (European Russia) were carried out. The gemmiparous plants of T. setiformis from the Northern Urals have approximately the same width as plants without gemmae but they are shorter. The leaves of gemmiparous plants from the Northern Urals are similar to leaves of gemmiparous plants from British Columbia. The leaf shape in upper part of the gemmiparous shoots varies from the typical to ± modified from gemmae production. These leaf shape transitions include reduction of leaf size and lobe number from 4 to 2–3, suppression of development and disappearance of characteristic teeth at the base of sinus. Gemmae size (17 × 22 μm) of plants from the Northern Urals is within variability recorded for plants from the Murmansk Region and British Columbia.

Bio-efficacy of post emergence herbicides in boro rice nursery as well as main field and their residual effects on non-target microorganisms

2020 ◽  
Vol 57 (3) ◽  
pp. 199-210
Author(s):  
Rajib Kundu ◽  
Mousumi Mondal ◽  
Sourav Garai ◽  
Ramyajit Mondal ◽  
Ratneswar Poddar
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Field Experiments ◽  
Block Design ◽  
Resistance Index ◽  
Residual Effects ◽  
Cost Ratio ◽  
Main Field ◽  
Weed Species ◽  
Similar Treatment

Field experiments were conducted at research farm of Bidhan Chandra Krishi Viswavidyalaya, Kalyani, West Bengal, India (22°97' N latitude and 88°44' E longitude, 9.75 m above mean sea level) under natural weed infestations in boro season rice (nursery bed as well as main field) during 2017-18 and 2018-19 to evaluate the herbicidal effects on weed floras, yield, non-target soil organisms to optimize the herbicide use for sustainable rice-production. Seven weed control treatments including three doses of bispyribac-sodium 10% SC (150,200, and 250 ml ha-1), two doses of fenoxaprop-p-ethyl 9.3% EC (500 and 625 ml ha-1), one weed free and weedy check were laid out in a randomized complete block design, replicated thrice. Among the tested herbicides, bispyribac-sodium with its highest dose (250 ml ha-1) resulted in maximum weed control efficiency, treatment efficiency index and crop resistance index irrespective of weed species and dates of observation in both nursery as well as main field. Similar treatment also revealed maximum grain yield (5.20 t ha-1), which was 38.38% higher than control, closely followed by Fenoxaprop-p-ethyl (625 ml ha-1) had high efficacy against grasses, sedge and broadleaf weed flora. Maximum net return (Rs. 48765 ha-1) and benefit cost ratio (1.72) were obtained from the treatment which received bispyribac-sodium @ 250 ml ha-1. Based on overall performance, the bispyribac-sodium (250 ml ha-1) may be considered as the best herbicide treatment for weed management in transplanted rice as well as nursery bed.

Performance of two combine harvester header in soybean crops

2020 ◽  
Vol 13 (2) ◽  
pp. 1
Author(s):  
E. M. Samogim ◽  
T. C. Oliveira ◽  
Z. N. Figueiredo ◽  
J. M. B. Vanini
Keyword(s):  
Experimental Design ◽  
Crop Yield ◽  
Field Performance ◽  
Travel Speed ◽  
The Other ◽  
Combine Data ◽  
Mato Grosso ◽  
Tukey Test ◽  
Combine Harvester ◽  
And Performance

The combine harvest for soybean crops market are currently available two types of combine with header or platform, one of conventional with revolving reel with metal or plastic teeth to cause the cut crop to fall into the auger header and the other called "draper" headers that use a fabric or rubber apron instead of a cross auger, there are few test about performance of this combine header for soybean in Mato Grosso State. The aim of this work was to evaluate the soybean harvesting quantitative losses and performance using two types combine header in four travel speed. The experiment was conducted during soybean crops season 2014/15, the farm Tamboril in the municipality of Pontes e Lacerda, State of Mato Grosso. The was used the experimental design of randomized blocks, evaluating four forward harvesting speeds (4 km h-1, 5 km h-1, 6 km h-1 and 7 km h-1), the natural crops losses were analyzed, loss caused by the combine harvester (combine header, internal mechanisms and total losses) and was also estimated the  field performance of each combine. Data were submitted to analysis of variance by F test and compared of the average by Tukey test at 5% probability. The results show the draper header presents a smaller amount of total loss and in most crop yield when compared with the conventional cross auger.

Applied Anthropology in 1860

1942 ◽  
Vol 1 (3) ◽  
pp. 19-32
Author(s):  
H. Barnett
Keyword(s):  
British Columbia ◽  
Church And State ◽  
Applied Anthropology ◽  
The Other ◽  
Public And Private ◽  
Other Hand ◽  
The Subject ◽  
Long Life

Much has been written of William Duncan, "the Apostle of Alaska", who came to the coast of northern British Columbia in 1857 as a missionary to the Tsimshian Indians. Although he deplored it, in the course of his sixty years' residence in this area controversy raged around him as a result of his clashes with church and state, and his work has been the subject of numerous investigations, both public and private. His enemies have called him a tyrant and a ruthless exploiter of the Indians under his control; and there are men still living who find a disproportionate amount of evil in the good that he did, especially during the declining years of his long life. On the other hand, he has had ardent and articulate supporters who have written numerous articles and no less than three books in praise of his self-sacrificing ideals and the soundness of his program for civilizing the Indian.

Influence of Application Method on the Activity of Butylate and EPTC in Reduced-Tillage Corn (Zea mays)

Weed Science ◽  
1987 ◽  
Vol 35 (3) ◽  
pp. 412-417 ◽  
Author(s):  
Douglas D. Buhler
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
The Other ◽  
Growth Chamber ◽  
Reduced Tillage ◽  
Corn Yield ◽  
Liquid Fertilizer ◽  
Application Method ◽  
Control Growth ◽  
Application Methods

Weed control in reduced-tillage corn (Zea maysL. ‘Pioneer 3732′) with butylate [S-ethyl bis(2-methylpropyl) carbamothioate] and EPTC (S-ethyl dipropyl carbarnothioate) was not reduced when these herbicides were applied jointly with dry or liquid fertilizer. In most cases, application with fertilizer resulted in weed control similar to that observed when the herbicide was applied in water at 285 L/ha. Butylate applied as a granular formulation also gave weed control similar to the spray at 285 L/ha. Application in 95 L/ha of water consistently resulted in reduced weed control. Corn injury was not greatly influenced by application method, and differences in corn yield appeared to be due to differences in weed control. Growth chamber bioassays indicated that both butylate and EPTC dissipated more rapidly when applied in 95 L/ha of water than the other application methods, which may explain differences in weed control observed in the field.

Influence of the time and rate of liquid-manure application on yield and nitrogen utilization of silage corn in south coastal British Columbia

1996 ◽  
Vol 76 (2) ◽  
pp. 153-164 ◽  
Author(s):  
B. J. Zebarth ◽  
J. W. Paul ◽  
O. Schmidt ◽  
R. McDougall
Keyword(s):  
British Columbia ◽  
Dairy Manure ◽  
Inorganic Fertilizer ◽  
N Recovery ◽  
Corn Yield ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Liquid Manure ◽  
Manure Application ◽  
Coastal British Columbia

Manure-N availability must be known in order to design application practices that maximize the nutrient value of the manure while minimizing adverse environmental impacts. This study determined the effect of time and rate of liquid manure application on silage corn yield and N utilization, and residual soil nitrate at harvest, in south coastal British Columbia. Liquid dairy or liquid hog manure was applied at target rates of 0, 175, 350 or 525 kg N ha−1, with or without addition of 100 kg N ha−1 as inorganic fertilizer, at two sites in each of 2 yr. Time of liquid-dairy-manure application was also tested at two sites in each of 2 yr with N-application treatments of: 600 kg N ha−1 as manure applied in spring; 600 kg N ha−1 as manure applied in fall; 300 kg N ha−1 as manure applied in each of spring and fall; 200 kg N ha−1 applied as inorganic fertilizer in spring; 300 kg N ha−1 as manure plus 100 kg N ha−1 as inorganic fertilizer applied in spring; and a control that received no applied N. Fall-applied manure did not increase corn yield or N uptake in the following growing season. At all sites, maximum yield was attained using manure only. Selection of proper spring application rates for manure and inorganic fertilizer were found to be equally important in minimizing residual soil nitrate at harvest. Apparent recovery of applied N in the crop ranged from 0 to 33% for manure and from 18 to 93% for inorganic fertilizer. Key words: N recovery, manure management

STRUCTURE, STRATIGRAPHY, AND PALEONTOLOGY OF AN UPPER TRIASSIC SECTION ON THE WEST COAST OF BRITISH COLUMBIA

1965 ◽  
Vol 2 (5) ◽  
pp. 442-484 ◽  
Author(s):  
Donald Carlisle ◽  
Takeo Susuki
Keyword(s):  
British Columbia ◽  
Structural Information ◽  
Pillow Lava ◽  
Middle Part ◽  
Upper Triassic ◽  
Coast Range ◽  
Thermal Alteration ◽  
The West ◽  
Coastal British Columbia ◽  
Sedimentary Unit

The highly deformed section at Open Bay is one of the few good exposures of a thick sedimentary unit within the prebatholithic rocks along coastal British Columbia. It provides new structural information relating to emplacement of a part of the Coast Range batholith and it contains an important Upper Triassic fauna unusually well represented. Structural and paleontological analyses are mutually supporting and are purposely combined in one paper.Thirteen ammonite genera from 14 localities clearly substantiate McLearn's tentative assignment to the Tropites subbullatus zone (Upper Karnian) and suggest a restriction to the T. dilleri subzone as defined in northern California.Contrary to an earlier view, the beds are lithologically similar across the whole bay except for variations in the intensity of deformation and thermal alteration. Their contact with slightly older relatively undeformed flows is apparently a zone of dislocation. Stratigraphic thicknesses cannot be measured with confidence, and subdivision into "Marble Bay Formation" and "Open Bay Group" cannot be accepted. Open Bay Formation is redefined to include all the folded marble and interbedded pillow lava at Open Bay. Lithologic and biostratigraphic correlation is suggested with the lower middle part of the Quatsino Formation on Iron River, 24 miles to the southwest. Basalt flows and pillowed volcanics west of Open Bay are correlated with the Texada Formation within the Karmutsen Group.The predominant folding is shown to precede, accompany, and follow intrusion of numerous andesitic pods and to precede emplacement of quartz diorite of the batholith. Structural asymmetry is shown to have originated through gentle cross-folding and emplacement of minor intrusives during deformation.

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