The Homing of Salmon in Apple River, N.S.

1936 ◽  
Vol 2 (4) ◽  
pp. 391-400 ◽  
Author(s):  
H. C. White
Keyword(s):  
The Other ◽  
First Year ◽  
The West ◽  
Tidal Water ◽  
Spawning Time ◽  
Second Year ◽  
Tidal Pools

Salmon from the East branch marked as smolts in 1934 returned as grilse in the fall of 1935, entering only the East branch up to spawning time. After October 22 more entered the West than the East branch. Female salmon tagged as adults gave evidence of remaining each in a particular "home" pool. After spawning some females dropped down to tidal pools in early November and later reascended the stream. Male salmon tagged as adults left their "home" pools, roaming up and down and even going through tidal water to the other branch; yet males came back the second year to the same pool in which they were taken (in one case repeatedly) in the first year.

CROP RESPONSE TO LIME AND FERTILIZER SUPERIMPOSED ON DIFFERENT TILLAGE TREATMENTS FOR A VIRGIN GREY WOODED SOIL

1963 ◽  
Vol 43 (2) ◽  
pp. 298-308
Author(s):  
Herman A. Hamilton ◽  
J. R. Lessard
Keyword(s):  
Surface Soil ◽  
The Other ◽  
First Year ◽  
Crop Response ◽  
Nitrogen And Phosphorus ◽  
Residual Phosphorus ◽  
Second Year ◽  
Tillage Treatment ◽  
Nitrogen Phosphorus ◽  
Forage Yields

A virgin Grey Wooded soil was subjected to different tillage treatments receiving various rates of nitrogen, phosphorus and lime. In a 5-year rotation of oats followed by 4 years of hay, oat forage yields with 24-inch plowing appeared to be less than those obtained with shallower tillage treatments, but the subsequent first- and second-year hay yields were substantially higher. Nitrogen and phosphorus significantly increased oat forage yields irrespective of tillage treatment. Increases in first-year hay yields due to residual phosphorus were highly significant with 12-inch and 24-inch plowing. Second-year hay yields were significantly increased by residual phosphorus on all tillage treatments with increases being in the order 12-inch plowing and disking greater than 6-inch and 24-inch plowing. Irrespective of tillage treatment, lowest hay yields were obtained in the first year of harvest. Despite the greater saturation of the sub-surface soil with bases, lime significantly increased hay yields on plots plowed to 24 inches. Whereas the legume component of the hay mixture was initially high on plots plowed to 24 inches, in the succeeding years the percentage decreased considerably. On the other hand, legume percentage, which was initially low, increased for plots that were disked or plowed to 6 inches. Plowing to a depth of 12 inches appeared to be the most satisfactory procedure in maintaining the best hay yields with a high percentage of legumes.

scholarly journals Herbage accumulation and canopy structure during stockpiling of Marandu, Piatã, Xaraés, and Paiaguás brachiariagrass cultivars

2021 ◽  
Vol 56 ◽  
Author(s):  
Manoel Eduardo Rozalino Santos ◽  
Lucas Santos de Moraes ◽  
Flávio Henrique de Oliveira Fernandes ◽  
Bruno Humberto Rezende Carvalho ◽  
Gabriel de Oliveira Rocha ◽  
...  
Keyword(s):  
Experimental Design ◽  
Accumulation Rate ◽  
Structural Characteristics ◽  
Canopy Structure ◽  
Lower Number ◽  
The Other ◽  
First Year ◽  
Second Year ◽  
Urochloa Brizantha ◽  
Mechanical Cutting

Abstract: The objective of this work was to compare herbage accumulation and canopy structural characteristics during the stockpiling period of the Marandu, Piatã, Xaraés, and Paiaguás cultivars of Urochloa brizantha. The experimental design was completely randomized, with three replicates. The experiment was repeated for two years (2017 and 2018), under mechanical cutting conditions, and the canopies were stockpiled for 90 days, from March to June. In the first year, forage mass was higher for the Xaraés and Paiaguás cultivars; however, in the second year, Xaraés showed a forage mass higher than that of the other cultivars. The number of vegetative tillers at the end of the stockpiling period was higher for Paiaguás, contrary to what was observed for number of reproductive tillers. The herbage accumulation rate was higher for the Paiaguás and Xaraés cultivars. The Paiaguás grass stands out for its high herbage accumulation rate during the stockpiling period and for its higher number of vegetative tillers and lower number of reproductive tillers than that of the other cultivars.

Glufosinate-Resistant, BAR-Transformed Rice (Oryza sativa) and Red Rice (Oryza sativa) Response to Glufosinate Alone and in Mixtures

1997 ◽  
Vol 11 (4) ◽  
pp. 662-666 ◽  
Author(s):  
Sujatha Sankula ◽  
Michael P. Braverman ◽  
Steven D. Linscombe
Keyword(s):  
Oryza Sativa ◽  
Seed Weight ◽  
Rice Plant ◽  
Rice Yield ◽  
Field Studies ◽  
The Other ◽  
First Year ◽  
Red Rice ◽  
Second Year ◽  
100 Seed Weight

Glufosinate applied postemergence alone and in mixture with pendimethalin, thiobencarb, quinclorac, propanil, bensulfuron, bentazon, acifluorfen, or triclopyr was evaluated on bialaphosresistant (BAR) rice and red rice in field studies. Glufosinate at 2.2 kg ai/ha alone was less phytotoxic (6%) to BAR-transformed rice than when it was applied in combination with 0.4 kg ai/ha triclopyr (59%) or 0.6 kg ai/ha acifluorfen (22%). Rice yield with glufosinate alone was similar to the weed-free check the first year, but 13% less than the weed-free check the second year. For the glufosinate plus triclopyr mixture, rice yield was reduced by 39 and 76% compared with glufosinate alone in 1994 and 1995, respectively. Red rice control was 92% with either 3.4 kg ai/ha propanil or 0.6 kg/ha acifluorfen mixed with 0.6 kg/ha glufosinate, which was greater than for glufosinate alone and the other combinations. Propanil or acifluorfen mixed with glufosinate reduced red rice plant height, panicle maturity, and 100-seed weight 16, 31, and 24%, respectively, compared to glufosinate alone and 30, 48, and 43%, respectively, compared to the nontreated weedy check.

scholarly journals Bal Arısı (Apis Mellifera L., 1758) Kolonilerinde Hijyenik Davranışa Etki Eden Faktörler ile Tespit Yöntemlerinin Karşılaştırması Üzerine Bir Çalışma

2016 ◽  
Vol 4 (12) ◽  
pp. 1207
Author(s):  
Ethem Akyol
Keyword(s):  
Apis Mellifera ◽  
Liquid Nitrogen ◽  
Clearance Rate ◽  
The Other ◽  
First Year ◽  
Hygienic Behaviour ◽  
Group 3 ◽  
Second Year ◽  
Process Method ◽  
Group 1

This study was conducted to determine the better hygienic behaviour determination method that is used in controlling against bee diseases and pests. Total forty honeybee colonies (Apis mellifera anatoliaca) were used and they were randomly divided into two groups (each group consists of twenty colonies) in first year. Liquid nitrogen method was used in the first group' colonies and pin-killing (needling process) method was used in the second group’ colonies to determine the effectiveness of methods for hygienic behaviour. Average clearance rate was found as 66.25% and 78.10% in the first (Liquid nitrogen application) and the second (pin-killing) groups respectively. In the second year, forty colonies were divided into five equal groups and each group consisted eight colonies. The first group consisted of 9 frames bees in standard langstroot hive (10 frame capacity), the second group consisted of 5 frames bees in standard langstroot hive (10 frame capacity), the third group consisted of 5 frames bees in ruşet hive (5 frame capacity), the forth group’s consisted of 3 frames bees in ruşet hive (5 frame capacity) and the fifty group consisted of queen mating hive. The pin-killing (needling process) method, tested in first year, was used for all groups to determine the effectiveness of colony population and the size of hive. Average clearance rates of the first, second, third, forth and fifth groups were 70.54%, 58.38%, 70.63%, 54.96% and 58.21% respectively. The colonies that belonged to the pin-killing (needling) group showed a higher cleaning behaviour rate than the other colonies. The density of bees in hive had an important effect on the clearance rate of colonies. The colonies of group 1 and group 3, which had the more density of bees in per unit area, had the higher clearance rate than the other groups.

scholarly journals Flipped Classroom and Aronson´s Puzzle: a Combined Evaluation in the Master´s Degree in Preuniversitary Teaching

2021 ◽  
Vol 22 ◽  
pp. e23617
Author(s):  
Carlos Lázaro-Carrascosa ◽  
Isidoro Hernán-Losada ◽  
Daniel Palacios-Alonso ◽  
Ángel Velázquez-Iturbide
Keyword(s):  
Cooperative Learning ◽  
Programming Languages ◽  
Vocational Training ◽  
Flipped Classroom ◽  
The Other ◽  
First Year ◽  
Group Practice ◽  
Web Pages ◽  
The Subject ◽  
Second Year

This article presents a double evaluation carried out in the subject Complements for disciplinary training II: Computing, corresponding to the Master's degree teacher training in secondary education, baccalaureate, vocational training and languages taught by the Universidad Rey Juan Carlos. The students of the subject had to learn how to prepare simple web pages, using HTML, CSS and JavaScript programming languages. To this end, the flipped classroom technique was used to present the necessary contents, combined with the adaptation of Aronson's cooperative learning puzzle technique, used to carry out a group practice that reflected the knowledge acquired. It is worth mentioning, as a complement to the two techniques used, the use of an adapted assessment rubric, which was provided to the students at the beginning of the teaching block. The evaluation was carried out during two consecutive academic years, 2018/2019 and 2019/2020. There were important differences between the two studies: in the first study, the students' previous self-assigned level was much higher (2.8 points as opposed to 1.4 points on a scale of 1 to 5). The other difference, even more relevant, was that in the second year all teaching was done at home, in a non-attendance format, on a mandatory basis, due to the period of confinement decreed by the state of alarm at that moment, because of the pandemic caused by the SARS-CoV-2 virus, popularly known as coronavirus. At the end of the experience, the students expressed their satisfaction with the learning acquired and with the tasks performed, in both cases. The techniques used were well-appreciated, in the first year more than in the second, and especially flipped classroom. The scores obtained were, in addition, always very relevant.

scholarly journals HARVEST AGE EFFECT ON YIELD OF ERECT BLACKBERRIES

HortScience ◽  
1992 ◽  
Vol 27 (11) ◽  
pp. 1170b-1170
Author(s):  
John R. Clark ◽  
James N. Moore
Keyword(s):  
Age Effect ◽  
The Other ◽  
First Year ◽  
Average Weight ◽  
Average Yield ◽  
Yield Increase ◽  
Berry Weight ◽  
Second Year ◽  
Effect On Yield

Yield and average berry weight were measured for first year fruiting (on semi-erect canes) and second year fruiting (erect canes) to compare harvest age effect for erect blackberries established from root cuttings. cultivars were `Cheyenne', `Choctaw', `Navaho' and `Shawnee' and 4 plantings were included in the comparison. One of the four plantings had an average yield of 27% more in the first year as compared to the second year. The other plantings had higher yields in the second year as compared to the first ranging up to a 100% increase. Yield was 23% higher for the second year when all plantings were averaged. Average yield increase by cultivar in the second year compared to the first was: 'Choctaw' 37%, 'Cheyenne' 27%, 'Navaho' 22% and 'Shawnee' 20%. Berry weight was not affected by harvest age except in one planting, where average weight was higher for first year fruiting.

scholarly journals The effect of calcium carbonate and top dressing with Peters Professional Special on the growth and flowering of Helleborus lividus Aiton

2009 ◽  
Vol 21 (1) ◽  
pp. 105-117
Author(s):  
Monika Henschke ◽  
Stanisława Szczepaniak ◽  
Piotr Czuchaj ◽  
Elżbieta Kozik
Keyword(s):  
Calcium Carbonate ◽  
The Other ◽  
First Year ◽  
Number Of Leaves ◽  
Second Year ◽  
Fertilizer Solution

Abstract For two years (2006 − 2007), seedlings and young plants of Helleborus lividus Aiton were grown in containers with a peat substrate, which was deacidified with calcium carbonate at the following doses: 2.5, 5.0, 7.5 and 10.0 g dm-3. The plants were divided into two groups in each variant of CaCO3 dosage, one fertilized with a solution of a lower (0.1%) and the other with a higher (0.3%) concentration of Peters Professional PL Special (15:11:29). Helleborus lividus growth in the first year of cultivation depended on the calcium carbonate dose. Taller plants, with a higher number of leaves, were produced using calcium carbonate at a dose of CaCO3 2.5-5.0 g dm-3. In the second year of cultivation good quality plants - taller, with higher numbers of leaves and shoots, were produced when grown in a substrate with 2.5-7.5 g CaCO3 per dm3. The application of solutions of various concentrations in top dressing did not have an effect on the growth of Helleborus lividus in the first year of cultivation, while in the second year taller plants, with more leaves as well as flowers and buds, were produced when applying a 0.3% fertilizer solution.

Comparison of lupin varieties for grain yield, nutritive value of stubbles, incidence of infection with Phomopsis leptostromiformis and occurrence of lupinosis

1978 ◽  
Vol 18 (92) ◽  
pp. 442 ◽  
Author(s):  
GW Arnold ◽  
PM Wood ◽  
M Nairn ◽  
J Allen ◽  
SR Wallace ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Content ◽  
Nutritive Value ◽  
The Other ◽  
Soluble Carbohydrates ◽  
First Year ◽  
Sheep Grazing ◽  
Phomopsis Leptostromiformis ◽  
Wheat Stubble ◽  
Second Year

The lupin cultivars Borre, Uniwhite, Fest, Uniharvest, Weiko III, CB46 and Ultra were grown for two years at Baker's Hill, Western Australia (640 mm average rainfall). Fest gave the highest grain yield in both years but the ranking of the other cultivars differed in the two years. Grain lost at harvest varied from 24 to 860 kg ha-1, being significantly higher from Weiko Ill and CB46. The nitrogen content of the grain of Weiko III and Ultra was significanlty higher than that in all other cultivars, and the pods of Ultra had a higher nitrogen content than pods of any other cultivar. In both years the stems and pods of Weiko Ill and Ultra had significantly lower concentrations of soluble carbohydrates, the stems fewer lesions from Phomopsis, and the sheep grazing the stubbles a much lower and less severe incidence of lupinosis than on all the other cultivars. In the first year liveweight gains over 63 days ranged from 2.9 kg on Fest to 7.5 kg on Borre. In the second year, when lupinosis was severe, there was a positive correlation between its severity and concentration of copper in the liver, and a negative correlation with zinc concentration. In another experiment Ultra and Unicrop had fewer Phomopsis lesions than CB46 and sheep grazing the stubbles less liver damage. Dry ewes grazed on stubbles of Uniharvest lupins planted at three different dates and on Fest lupins barely maintained weight but those grazed on wheat stubble lost 6.5 kg in 42 days. Stubbles from Uniharvest lupins sown at four different dates in two years all produced lupinosis when fed to sheep in pens. The diet selected by sheep from the stubbles was measured in two of the experiments. In both, stem, which is the most toxic fraction, made up at least 80 per cent of the diet from the time grazing started.

Response of Southern Wax Myrtle (Myrica cerifera) to Herbicides in Florida

1993 ◽  
Vol 7 (1) ◽  
pp. 84-91 ◽  
Author(s):  
R. S. Kalmbacher ◽  
J. E. Eger ◽  
A. J. Rowland-Bamford
Keyword(s):  
Linear Increase ◽  
The Other ◽  
First Year ◽  
Single Application ◽  
Myrica Cerifera ◽  
Structural Carbohydrate ◽  
Second Year

Triclopyr (0.28, 0.56, and 1.12 kg ai ha−1); triclopyr + 2,4-D (0.56 + 1.12 kg ha−1); and dicamba (1.12 kg ha−1) were evaluated over 2 yr at two locations in Florida for southern wax myrtle control following spring (Mar. to Apr.) or summer (Aug. to Sept.) applications. All treatments were applied twice, 1 yr apart, except 1.12 kg ha−1 triclopyr, which was applied once in the initial year. In the first year, defoliation with triclopyr was quadratic with > 90% at 0.56 kg ha−1. In the second year, a single application of 1.12 kg ha−1 triclopyr resulted in similar (P > 0.05) defoliation compared with two applications of 0.56 kg ha−1 triclopyr. After 1 yr, increasing triclopyr rate resulted in a linear increase in mortality. After 2 yr, two applications of triclopyr at 0.56 kg ha−1 and triclopyr + 2,4-D caused lower (P < .01) mortality (45%) than a single application of 1.12 kg ha−1 triclopyr (63%). Addition of 2,4-D to triclopyr did not increase mortality. After 2 yr, two applications of 0.28 kg ha−1 triclopyr resulted in 21% mortality while two applications of dicamba were ineffective. Defoliation was often greater with spring, compared with summer applications, but often depended on treatment and location. Mortality was greater (P < 0.01) at 1 and 2 yr after summer application compared with spring application at one location, but not the other. Roots of wax myrtle were sampled on 28-d intervals in the first year and analyzed for total non-structural carbohydrate (TNC). Starch composed 630 g kg−1 of TNC in myrtle roots, with highest concentration of TNC (120 g kg−1) in March and lowest (30 g kg−1) in August.

scholarly journals Pasture production responses to fertiliser on renovated West Coast pakihi soils

2006 ◽  
pp. 331-338
Author(s):  
J.D. Morton ◽  
A.H.C. Roberts
Keyword(s):  
West Coast ◽  
Annual Rainfall ◽  
First Year ◽  
Nutrient Requirements ◽  
The West ◽  
Pasture Production ◽  
Dairy Management ◽  
Production Increase ◽  
Second Year ◽  
Nitrogen Phosphorus

Mowing trials were carried out to determine the rates of fertiliser nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) and frequency of application of K for maximum pasture production on extremely infertile humped and hollowed pakihi soils in the Grey Valley (Souters and Sommervilles dairy units), and flipped soils at Cape Foulwind (Bassetts dairy unit) under high annual rainfall (2000 - 3000 mm) on the West Coast. In the first measurement year, there was no significant increase in pasture production above 480 kg N/ha, 56 kg P/ha, 360 kg K/ha and 136 kg S/ha at Souters and Bassetts and a significant increase in pasture production up to 600 kg N/ha, 56 kg P/ha, 360 kg K/ha and 140 kg S/ha at Sommervilles. In the second year, there was no significant pasture production increase above 480 kg N/ ha, 56 kg P/ha, 360 kg K/ha and 136 kg S/ha at all sites. The high N, K and S rates were required because nutrients were not being recycled through returned clippings. This situation would be similar to the early stages of dairy management on these units where only a small proportion of pasture would receive recycled nutrients through return of excreta. Over time, a larger proportion of the pasture would be affected by excreta and fertiliser nutrient requirements would be expected to decrease. There was no increase in pasture production from applying potassium chloride in more than four applications per year at Souters and Bassetts in the first year, but a significant increase in pasture production from eight compared with four applications per year at Sommervilles, where soil QT (quick test) K levels were lower than at the other two sites. Keywords: flipped, hump and hollowed, nitrogen, phosphorus, potassium, sulphur

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