scholarly journals Productivity of Rhizomes and Starch Quantification in Cultures of Different Vegetative Propagules of Arrowroot

2019 ◽  
Vol 11 (5) ◽  
pp. 419 ◽  
Author(s):  
Douglas C. de Souza ◽  
Paula A. Costa ◽  
Luis F. L. e Silva ◽  
Thiago S. Guerra ◽  
Luciane V. Resende ◽  
...  
Keyword(s):  
Extraction Yield ◽  
Average Weight ◽  
Productive Capacity ◽  
Total Production ◽  
Agricultural Crops ◽  
Climate Conditions ◽  
Family Farmers ◽  
Large Size ◽  
Vegetative Propagules ◽  
Arrowroot Starch

Arrowroot rhizomes are rich in carbohydrate and are commonly grown by family farmers who have an important source of income in this activity and play a prominent role in the conservation of the species. There are few studies on the phytotechnical aspects of culture. The objective of this work was to evaluate the productive capacity of the ‘common’ arrowroot using different sizes and forms of propagation, aiming at the production of rhizomes and arrowroot starch, in different agricultural crops. The experimental design was the randomized block in a 4 × 2 factorial scheme, with 6 replicates. Four types of rhizome propagation (rhizomes-seeds of small size with a weight of 20 to 30 g; rhizomes-seeds of average weight between 30.01 to 45 g; rhizomes-seeds of large size weighing between 45.01 a 60 g, and seedlings produced in tissue culture), in two agricultural years (2015/2016 and 2016/2017). The variables total production, number of rhizomes, extraction yield and total starch production were evaluated. The type of propagule used interfered in the yield of rhizomes (9.85 to 34.75 t ha-1) and in the production of arrowroot starch (1.76 to 7.68 t ha-1). The vegetative propagation with pieces of rhizomes-seeds between 20 and 60 g was more viable than the micropropagation technique. Although the soil and climate conditions showed differences between the agricultural crops studied, they did not significantly influence the yield of rhizomes and arrowroot starch, by the type of propagule used.

scholarly journals STUDY REGARDING THE CARBONATICAL SOILS FROM THE TRANSYLVANIAN DEPRESSION FORMED ON THE EOCINICAL DEPOSITS OF NUMULITS

1970 ◽  
Vol 63 ◽  
Author(s):  
I. Pacurar ◽  
V. Bunescu ◽  
M. Darja ◽  
Doina Clapa ◽  
L. Holonec ◽  
...  
Keyword(s):  
Surface Coating ◽  
Soil Cover ◽  
Quercus Petraea ◽  
Point Of View ◽  
Agricultural Crops ◽  
Quaternary Deposits ◽  
Climate Conditions ◽  
Sedimentary Deposits ◽  
A Value ◽  
Average Annual Temperature

The Căpuşului hills are in the Transilvanian depression a trully ”geologycal eocenic golf” with a rich fossilifeuros fauna (Gryphaea eszerházy, G. gigantica, Turrietella imbricataria, Corbula gallica, Cepatia cepacea, Rotularia spirulaea) and also nummulitus species. The pedogenetic cover is constituted by sedimental deposits (clays, marls, limestones, gritsones). Also the pedogentic cover is represented by preluvisoils, luvisoils, eutricambisoils, clay cernozems. The relief characteristics are the Nummulites perforatus, N. fabianii and N. striatus who are the basically substrates from the acrobatically soils. The Transylvanian Depression is considered to be a true "geological eocenical gulf", is remarked through the conservation of a highly rich fossil fauna. Under the geological aspect, on a crystalline base is revealed the whole series of eocenical formations (striped clays, clays and limestone with "numuliti"), oligocenical (carbonatical clays, sands, sand stones and quaternary deposits) (Posea, 1978; Pop, 2001). These sedimentary deposits lay down from the half of the inferior Miocen and finished during the Panonian's end have constituted the parenthal material for the actual pedogenetical cover. A special characteristic of the landscape (with heights of 600-800m), from the outskirts of the Depression (the Huedin Depression, the Paniceni High hills, the Capus and Savadisla Corridor) is the fact that at the surface coating begin to appear "numulits" (Nummulites perforatus, N. fabianii, N. striatus), close to the localities Capusul mic, Leghia, Savadisla, Aghires, Manastireni, Cluj-Calvaria, Vlaha), deposits on which carbonatical soils are formed. If we view this are from the climate's point of view this area belongs to the Dfbk (Koppen) climatical province. The climate is a temperate continental of high hills, with forest. At Cluj-Napoca the average annual precipitations reach 613mm, the average annual temperature has a value of 8.3 degrees C, and the aridity indicator "De Martonne" has the value of 33.7. According to the climate conditions the studied area belongs to the level of oak (Quercus petraea) and the area of mezofilical oaks. (Quercus robur) Generally the areas of forest are mixed with those of pasture or agricultural crops. Because of the diversity of the ecological conditions the soil cover is extremely different, being constitueted of preluvosoils, luvosoils, eutricambosoils, cernosioms, carbonatical soils. (Blaga 1981, Bunescu &co 2005).

scholarly journals INFLUENCE OF SPACING AND PRUNING ON ECONOMIC RETURNS OF STAKED TOMATOES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1075G-1075
Author(s):  
Jeanine M. Davis ◽  
Edmund A. Estes
Keyword(s):  
Field Studies ◽  
Production Costs ◽  
Total Production ◽  
Economic Returns ◽  
Plastic Mulch ◽  
Early Season ◽  
Net Returns ◽  
Large Size ◽  
Western North Carolina ◽  
Market Pressures

Stable prices and increased competitive market pressures have caused many staked tomato producers to examine the costs and benefits of adopting intensive production practices such as drip irrigation and plastic mulch. Inclusion of these practices with traditional growing practices often results in a total production cost in excess of $10,000 per acre. In 1988 and 1989, field studies were conducted in western North Carolina to determine if changes in plant spacing and pruning could reduce production costs, increase yields of large fruit and improve grower net returns from staked tomatoes (c. Mountain Pride). Combined data indicated that the greatest early season yields were obtained using early pruning (when suckers were 2-4 inches long) and in-row spacings of 18 inches or less. Net returns per acre were greatest when: 1) plants were pruned early and spaced closely in-row, which increased high priced early season yields and 2) plants were spaced 30 inches apart and either pruned early or not pruned, which increased total season yields. Non-pruned plants had lower yields of Jumbo and Extra Large size fruit, but higher total yields than pruned plants.

scholarly journals Size Does Matter: Model Selection of Shark Attack Case

2021 ◽  
Author(s):  
Andri Wibowo
Keyword(s):  
Model Selection ◽  
Average Length ◽  
Average Weight ◽  
Shark Species ◽  
Carcharodon Carcharias ◽  
Large Size ◽  
Matter Model ◽  
Size Model ◽  
Carcharhinus Melanopterus ◽  
Selection Of

Shark unprovoked attacks consist of fatal and non-fatal cases. Numerous cases have been reported involving shark species from Carcharhinus melanopterus with length of 145.5 cm to half-ton Carcharodon carcharias. Currently there are more (P < 0.05) unprovoked non-fatal cases with the average is 28.46 cases/shark species (95%CI: 3.86-53.1) than unprovoked fatal cases, which the average is 5.12 cases /shark species (95%CI: -0.075-10.3). Hence this paper seeks to select the best shark size model that correlates with the unprovoked fatal and non-fatal cases. The studied sharks consist of 24 shark species with the average length is 268.18 cm (95%CI: 230-306 cm) and the average weight is 225.42 kg (95%CI: 128-323 kg). Based on the model and as described by low values of AIC and the highest values of R2 and adjusted R2 , shark weight followed by combinations of shark weight and length produced unprovoked fatal and non-fatal cases best models. The model for explaining unprovoked fatal cases is the shark weight with high numbers of cases observed in large size shark (weight⁓fatal cases, AIC = 165.359, R2 = 0.72, Adj. R = 0.71). While for non-fatal cases, the best model is also the shark weight (weight⁓non fatal cases, AIC = 246.93, R2 = 0.63, Adj. R = 0.59).

scholarly journals Analysis of a Gyroscopic-Stabilized Floating Offshore Hybrid Wind-Wave Platform

2020 ◽  
Vol 8 (6) ◽  
pp. 439
Author(s):  
Beatrice Fenu ◽  
Valentino Attanasio ◽  
Pietro Casalone ◽  
Riccardo Novo ◽  
Giulia Cervelli ◽  
...  
Keyword(s):  
Power Output ◽  
Reference Site ◽  
Wind Wave ◽  
Total Production ◽  
Floating Platform ◽  
Climate Conditions ◽  
Gyroscopic Stabilization ◽  
Induced Motion ◽  
Energy Innovation ◽  
The Cost

The energy innovation scenario sees hybrid wind-wave platforms as a promising technology for reducing the variability of the power output and for the minimization of the cost of offshore marine renewable installations. This article presents a model that describes the installation of a 5 MW wind turbine on a floating platform designed by Fincantieri and equipped with gyroscopic stabilization. The use of gyros allows for the delivery of platform stabilization by damping the wave and wind induced motion on the floater and at the same time producing extra power. Shetland Island was chosen as the reference site because of its particularly harsh weather. Final results show that the total production of power in moderate and medium climate conditions is considerable thanks to the installation of the gyro, together with a significant stabilization of the platform in terms of pitching angle and nacelle acceleration.

Economie analysis of alternative cropping systems for a bean/wheat rotation on light-textured soils

1993 ◽  
Vol 73 (2) ◽  
pp. 405-415 ◽  
Author(s):  
E. K. Yiridoe ◽  
A. Weersink ◽  
R. C. Roy ◽  
C. J. Swanton
Keyword(s):  
Phaseolus Vulgaris ◽  
Cropping Systems ◽  
Sandy Soils ◽  
Conventional Tillage ◽  
Productive Capacity ◽  
Total Production ◽  
Phaseolus Vulgaris L ◽  
Net Returns ◽  
Kidney Beans ◽  
No Till

Tobacco (Nicotiana tabacum L.) has been the predominant cash crop grown on sandy soils of southern Ontario, but the area cropped has fallen significantly with the decline in tobacco demand. Crops such as beans and wheat (Triticum aestivum L.) are technically feasible alternatives, but their yields have been highly variable. Cover crops and conservation tillage are approaches that may increase the productive capacity of sandy soils while reducing the environmental impact of present production systems. In this study, yields, costs and net returns of three bean-winter wheat cropping systems were evaluated under conventional tillage and four variations of no-till systems differentiated by the type of cover crop. The three beans considered were soybeans (Glycine max L. Merr.), white beans (Phaseolus vulgaris L.) and kidney beans (Phaseolus vulgaris L.). Average yields of the three beans grown under conventional tillage were consistently lower than those of the four no-till treatments, but the differences were significant in only a few years. Total production cost for the bean crops was $96 ha−1 lower for the no-till treatments than for conventional tillage. Average net returns for the rotation involving kidney beans were approximately $100 ha−1 higher than those involving white beans and $330 ha−1 higher than soybeans. Conventional tillage produced the lowest net returns within each of the bean/wheat rotations. Key words: Conventional tillage, no-till, bean, net returns

scholarly journals STUDY ON THE RESPONSE OF THE SAFARI POTATO VARIETY TO SPRAYING WITH THE NUTRIENT SOLUTION HORTIPHYTE AND THE SEAWEED EXTRACT STYMULANT FORTE

2020 ◽  
Keyword(s):  
Nutrient Solution ◽  
Dry Matter ◽  
Total Yield ◽  
Seaweed Extract ◽  
Stem Length ◽  
Average Weight ◽  
Total Production ◽  
Area Index ◽  
Aerial Stem ◽  
Spray Treatment

An experiment was carried out in vegetable fields, Department of Horticulture and Gardening, College of Agriculture and Forestry, Mosul University for the spring season 2018. To find out the effect of foliar feeding of a seaweed extract (Stymulant forte) in concentrations of (0, 3 and 6) g. L-1 and Hortiphyte nutrient solution in concentrations (0, 2 and 4) ml. L-1 on the potato crop class A (Safari). The experiment was carried out with 9 factor treatments according to the Randomized complete block design (RCBD), with three replications. The results of the studied treatments were tested according to the polynomial Duncan test at a probability level of 0.05. The results showed the superiority of the treatment of spraying seaweed extract at concentration 6 g. L-1 was significant, given the highest significant values for average stem length and number of aerial stem. plant-1 , and the percentage of dry matter for the plant%, while spray treatment was superior to 3 g. L-1 was significant in the leaf area index, treatment of spraying feeding solution in two or four ml concentrations. L-1 was significant at average stem length (cm) and number of aerial stem. plant-1 , with an increase of (5.10 and 15.35%), respectively; compared to the comparison treatment. The two characteristics of chlorophyll and the percentage of dry matter per plant were not different from the comparison treatment. As for the results of the total yield, it was given the treatment of spraying the seaweed extract at a concentration of 6 g. L -1 is the most significant value for the number of tubers. Plant-1 , average weight of tuber (kg), yield of one plant (kg), percentage of dry matter for tubers%, and production rate per area (tons. ha-1) compared to the rest of the treatments, and reached (13.111 tuber. Plant-1 , 0.126 kg, 1.63 kg, 16.127%, 87.390 ton. ha-1 ), respectively. The treatment of spraying the nutrient solution affected the 2 or 4 mL concentrations. 1 liter-1 morally by giving the highest significant values for the average weight of the tuber, the yield of one plant and the percentage of dry matter for tubers and total production per area compared to the no-spray treatment, and with an increase of 11.11 kg, 11.68 kg, 7.43%, 11.54 tons. ha-1 ), respectively. It did not differ from the comparison treatment in terms of the number of tubers. plant

scholarly journals Phenotypic and genetic study of seedlessness in grape varieties

2020 ◽  
pp. 5-9
Author(s):  
E. T. Ilnitskaya ◽  
E. G. Pyata ◽  
M. V. Makarkina ◽  
A. A. Marmorshtein ◽  
T. D. Kozina
Keyword(s):  
Dna Analysis ◽  
Average Weight ◽  
Published Data ◽  
Reaction Products ◽  
Genetic Studies ◽  
Important Indicator ◽  
Climate Conditions ◽  
Pcr Product ◽  
Seedless Grape ◽  
Grape Varieties

The phenomenon of seedlessness in grapes is a special form of sterility and it is characterized by the complete absence of seeds in the berry or the presence of their primordia. A phenotypic and genetic studies of 20 varieties of seedless grape growing at the Anapa ampelographic collection were carried out. The manifestation of the degree of seedlessness may depend on growing conditions and climatic peculiarities during crop formation. In the weather and climate conditions of 2019, which were characterized by an increased temperature regime, the degree of seedless berries of the studied varieties was determined. Genetic studies were performed on the basis of polymerase chain reaction (PCR) with the separation of reaction products by capillary electrophoresis using the automatic genetic analyzer ABI Prism 3130. The DNA-marker p3-VvAGL11, closely linked to the VvAGL11 locus, which influences to the formation of seedlessness in grapes, was used in the work. The mass of rudiments was determined by extracting seed primordia from berries and their dehydration in a drying cabinet to final unchanged mass of rudiments. In the varieties Kishmish Sogdiana, Remaily Seedless and Kishmish Kruglyi rudiments were practically absent. The greatest mass of rudiments in the berry (over 14.1 mg) was observed in the varieties Pamyati Smirnova, Yangi Yer, Vanessa Seedless, Kishmish Luchistyi. In addition to the degree of development of seed rudiments, in seedless table grape varieties, an important indicator is the size of the berry, which generally affects the consumer choice of a particular variety. By the average weight of the berry, Kishmish Luchistyi variety (5.05 g) was distinguished. The smallest mass of berries observed in varieties Rozovyi Biser, Kishmish Siyekh, Kishmish Kruglyi, Kishmish Krupnyi, Bessemyannyi Ranniy (less than 1.5 g). DNA analysis using the p3-VvAGL11 marker revealed in all genotypes the presence of a PCR-product with a size of 198 nucleotide pairs, which corresponds to published data on the correlation of this size of the PCR-product with seedless berries.

scholarly journals An Assessment of Seaweed Extracts: Innovation for Sustainable Agriculture

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1433
Author(s):  
El Chami Daniel ◽  
Galli Fabio
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Scientific Evidence ◽  
Total Yield ◽  
Average Weight ◽  
Climate Conditions ◽  
Modern Agriculture ◽  
Agricultural Produce ◽  
Pear Orchard

Plant growth regulators (PGRs) are described in the literature as having a significant role in securing crop management of modern agriculture in conditions of abiotic and biotic stressors. A joint field experiment was carried out to assess the role of seaweed-based extracts in pear trees and to test the “less for more” theory, which consists of getting more and better agricultural produce using fewer innovative inputs. The trials took place on two production seasons (from March till September 2018–2019) and the selected case study was on a pear orchard (Pyrus communis L. cv. Abate Fètel) in Emilia Romagna (Italy) by Fondazione Navarra and Timac Agro Italia S.p.A. Results demonstrate that, depending on the yearly climate conditions, it was possible to substantially reduce the primary nutrients by 35–46% and total fertilisation units applied by 13% and significantly improve quantitative and qualitative production indicators (average weight of fruits (5%) and total yield (19–55%)). Results also confirm a positive correlation between plant growth regulators and agronomic efficiency of pears which increased between five and nine times compared to the conventional nutrition programme. These outcomes constitute scientific evidence for decision making in farm management.

scholarly journals Radioactive Iodine Therapy for Goitrous Hashimoto’s Thyroiditis

2006 ◽  
Vol 91 (11) ◽  
pp. 4497-4500 ◽  
Author(s):  
Junichi Tajiri
Keyword(s):  
Hashimoto’S Thyroiditis ◽  
Radioactive Iodine ◽  
Clinical Symptoms ◽  
Hashimoto's Thyroiditis ◽  
Average Weight ◽  
Outpatient Basis ◽  
Large Size ◽  
Large Goiter ◽  
Tsh Suppression Therapy ◽  
Student’S T

Abstract Context: Hashimoto’s thyroiditis is an autoimmune disease that can produce marked clinical symptoms when patients have large diffuse goiters. Design: This retrospective cohort study was designed to evaluate whether radioactive iodine (RAI) is effective for Hashimoto’s thyroiditis with a large goiter. Starting in November 1999, 13 Hashimoto’s patients with large goiters, whose thyroiditis was refractory to TSH suppression therapy with thyroid hormone administration [two men and 11 women with a mean age of 61.2 ± 8.9 yr (50–79 yr)], were recruited for the present study. The duration of symptomatic goiter before undergoing RAI was 12.0 ± 7.9 yr (4–33 yr). Thirteen millicuries of 131I was administered two to six times, at an interval of 1–6 months on an outpatient basis. Thyroid weight was measured ultrasonographically, or by computed tomography if ultrasound was not possible due to the large size of the goiter. Results: RAI was administered an average of 4.7 ± 1.4 times (two to six times), with a total dose of 59.8 ± 17.3 mCi (25.0–78.0 mCi). The observation period was 47.9 ± 13.4 months (26–66 months) after the first RAI. The average weight of the thyroid gland was 125.3 ± 57.7 g (42.9–269.4 g) before the first RAI, decreasing significantly to 49.7 ± 25.8 g (18.3–93.3 g) after the last RAI (P < 0.001, paired Student’s t test). The percent reduction from baseline was 58.7 ± 14.2% (35.7–84.0%). None of the patients showed an increase in goiter size or complained of a pressure sensation after any of the RAI treatments. Conclusion: RAI is effective in Hashimoto’s thyroiditis with a large goiter.

Sign in / Sign up

Export Citation Format

Share Document