scholarly journals Influence du gauchissement de semis d'épinette noire (Picea mariana (Mill.) B.S.P.) produits en serre sur leur performance en plantation

1992 ◽  
Vol 68 (3) ◽  
pp. 365-370 ◽  
Author(s):  
Martin Béland ◽  
Jean Lapierre
Keyword(s):  
Picea Mariana ◽  
Black Spruce ◽  
Block Design ◽  
Field Evaluation ◽  
Early Growth ◽  
Soil Conditions ◽  
Long Term Effect ◽  
Randomized Complete Block Design ◽  
Stem Deformation

Spiralization is a developmental deformation in winter greenhouse produced black spruce seedlings characterized by a drooping stem or portion of stem. During lignification, the seedling redresses but maintains part of its deformation. The objective of this study is to evaluate the long-term effect of spiralization on the growth, survival and morphology of black spruce seedlings in order to determine to what degree the rejection of spiralized seedlings is justified. Field evaluation was undertaken on 2304 black spruce seedlings planted on three sites with different soil conditions in Abitibi, Québec. The seedlings were divided in the greenhouse into six stem deformation classes of varying intensities, including a control, and laid out on a randomized complete block design. From 1986, the year of plantation, to 1990, spiralization had little effect on height and diameter growth. However, severely deformed seedlings planted on a heavy-textured site suffered sufficiently high mortality rates to justify their rejection. Moreover, these seedlings developed a higher proportion of double leaders. The study suggests that systematic rejection of all classes of deformed seedlings, especially those in the less severe classes, is probably not justified. Key words: Spiralization, stem deformation, seedlings, planting, black spruce, greenhouse, early growth, mortality.

scholarly journals Residual effects of superficial liming on tropical soil under no-tillage system

2016 ◽  
Vol 51 (9) ◽  
pp. 1633-1642 ◽  
Author(s):  
Claudio Hideo Martins da Costa ◽  
Carlos Alexandre Costa Crusciol ◽  
Jayme Ferrari Neto ◽  
Gustavo Spadotti Amaral Castro
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Block Design ◽  
Residual Effects ◽  
Available Phosphorus ◽  
Long Term Effects ◽  
Matter Production ◽  
Randomized Complete Block Design ◽  
Tillage System

Abstract The objective of this work was to evaluate the long-term effects of the surface application of lime on soil fertility and on the mineral nutrition and grain yield of soybean, and of black oat and sorghum in crop succession. The experiment was carried out on a clayey Oxisol, in a randomized complete block design, with four replicates. Treatments consisted of lime the rates of 0, 1,000, 2,000, and 4,000 kg ha-1, applied in October 2002 and November 2004. Soil samples were collected at five soil layers, down to 0.60-m depth. Surface liming was effective in reducing soil acidity and increasing Ca2+ and Mg2+ contents in the subsurface. Moreover, it increased available phosphorus contents and soil organic matter in the long term (48 to 60 months after the last lime application). Surface liming improved plant nutrition, mainly for N, Ca, and Mg, and increased dry matter production and grain yield of the crops, even in years with regular distribution of rainfall. The greatest productivities of soybean, black oat, and sorghum were obtained with the respective estimated lime doses of 4,000, 2,333, and 3,281 kg ha-1, for shoot dry matter, and of 2,550, 3,555, and over 4,000 kg ha-1, for grain yield.

scholarly journals Organik ve Konvansiyonel Üzüm Yetiştiriciliği Yöntemlerinin Asmadaki Bitki Besin Maddesi İçeriklerine Etkisi

2018 ◽  
Vol 6 (4) ◽  
pp. 464
Author(s):  
Fadime Ateş ◽  
Bülent Yağmur ◽  
Çiğdem Takma
Keyword(s):  
Leaf Blade ◽  
Block Design ◽  
Nutrient Content ◽  
Production Method ◽  
Mineral Elements ◽  
Organic Production ◽  
Soil Conditions ◽  
Grape Variety ◽  
Production Methods ◽  
Randomized Complete Block Design

The research was established in 15 years old Sultana vineyard under irrigable soil conditions in Alaşehir-Yeşilyurt Viticulture Research Institute during organic production phase from 2006 to 2007. This study was conducted to find out the effects of organic and conventional of mineral elements (N, P, K, Ca, Mg, Fe, Zn, and Mn) of lamina and petiole leaf at Alaşehir, Manisa, which is of a potential important in the production of Sultani Çekirdeksiz grape variety. In the experiment which was carried out in the randomized complete block design with three replications, organic and conventional grape growing were performed. As a result of the research, comparing the conventional and organic grape production methods in terms of the nutrient content of Sultani Çekirdeksiz grape variety, it was determined that the nutrient content in leaf blade and petiole of grapevine in the organic production method has higher values than the conventional method.

scholarly journals PEMANFAATAN HASIL FERMENTASI LIMBAH CAIR TEH HIJAU PADA FREKUENSI PENYIRAMAN YANG BERBEDA TERHADAP PERTUMBUHAN BIBIT KARET (Hevea brasiliensis Mull. Arg)

MEDIAGRO ◽  
2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Retno Muningsih ◽  
Farhan Wardhana Majing
Keyword(s):  
Green Tea ◽  
Block Design ◽  
Organic Fertilizer ◽  
Liquid Waste ◽  
Early Growth ◽  
Treatment Control ◽  
Plant Seed ◽  
Fermentation Liquid ◽  
Randomized Complete Block Design ◽  
Number Of Leaves

ABSTRACT This research aimed to know the differences influence the frequency of watering fermentation liquid waste green tea on early growth of rubber plant seed. This research method using Randomized Complete Block Design (RCBD) non factorial, i.e. the granting of fermentation liquid waste green tea with a dose of 10 ml/poly bag with 3 treatment. As for the extent of the treatments given are control (P0), the frequency of watering every two weeks (P2), the frequency of watering every four weeks (P4). Each treatment was repeated five times so that there are 15 units of the experiment. Each unit is comprised of 1 trial crops so that there is a total of 15 plants. The giving of liquid organic fertilizer from waste liquid fermented green tea can enhance plant growth include rubber, i.e. plant height, number of leaves, green leaves, heavy wet and dry long & root plant rubber. On treatment of P2 (the frequency of watering every two weeks) show the highest results and good than P0 treatment (control) and P4 (the frequency of watering every four weeks). Keywords: fermentation, tea liquid waste, liquid organic fertilizer.

scholarly journals Phenotypic and Physiological Evaluation of Wheat Genotypes under Non-Saline and Saline Soil Conditions

2021 ◽  
pp. 29-43
Author(s):  
Hamada Amer ◽  
Mohamed Z. Dakroury ◽  
Ibrahim S. El Basyoni ◽  
Hanaa M. Abouzied
Keyword(s):  
Grain Yield ◽  
Saline Soil ◽  
Block Design ◽  
Soil Conditions ◽  
Salt Tolerant ◽  
Wheat Genotypes ◽  
Growing Seasons ◽  
Randomized Complete Block Design ◽  
Salinity Levels ◽  
Physiological Evaluation

This study was conducted to assess the effect of soil salinity on leaf area (LA), the number of days to flowering (DF), plant height (PH), and grain yield. Overall, 60 wheat genotypes were used, including 49 CIMMYT elite lines and 11 commercially grown Egyptian wheat cultivars. During two growing seasons (2017 and 2018), the genotypes were grown in non-saline (S0) and saline (S1) soils. A randomized complete block design with three replicates was used in a split-plot arrangement. Salinity levels were randomly assigned to the main plots, while genotypes were randomly assigned to the subplots. The obtained results showed that the saline soil adversely affected the evaluated genotypes. Furthermore, a highly significant effect of genotypes × salinity was observed on grain yield and its attributed traits. Based on salinity indices results, some of the imported wheat genotypes outperformed the Egyptian cultivars in grain yield under salinity stress conditions. The results further indicated that Sakha-93, C-31, and C-40 were the most salt-tolerant genotypes. The best performing line among the CIMMYT lines was C-31, which recorded the highest grain yield under none-saline and saline soil in the two seasons of study.

scholarly journals Field Evaluation of Azalea Species and Cultivars for Resistance to Azalea Lace Bug and Cranberry Rootworm

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 482B-482 ◽  
Author(s):  
Carol D. Robacker ◽  
S.K. Braman
Keyword(s):  
Block Design ◽  
Field Evaluation ◽  
Deciduous Trees ◽  
Field Plot ◽  
Delaware Valley ◽  
Woody Ornamentals ◽  
Lace Bug ◽  
Randomized Complete Block Design ◽  
Lace Bugs ◽  
Evergreen Azalea

Azalea lace bug (Stephanitis pyrioides) is the most serious pest on azalea. Both evergreen and deciduous azaleas are susceptible, though more resistance has been observed in the deciduous. To identify genes for resistance, fourteen deciduous azalea species, three deciduous azalea cultivars derived from complex hybrids, and one evergreen cultivar were planted in a randomized complete-block design under mixed deciduous trees in the fall of 1994. Each block was replicated 12 times. In the spring and summer of 1995, azalea lace bugs were introduced onto branches of six plants of each of the taxa. One month later, and again in the fall of 1996, the percentage of infected shoots per plant was measured. Very little damage from azalea lace bug was observed on the R. canescens, R. periclymenoides, and R. prunifolium plants, while `Buttercup', `My Mary', R. japonicum, and R. oblongifolium had the greatest damage. The cranberry rootworm, Rhadopterus picipes, damages many woody ornamentals, including some azalea species. The injury appears as elongated cuts on the leaves, and is most severe on plants growing under dense canopies. The cranberry rootworm has been observed in this azalea field plot. Plants were evaluated for damage in June 1995 and 1996. Cranberry rootworm damage was most severe on `Buttercup', R. japonicum, R. prinophyllum, and R. calendulaceum, while the evergreen azalea `Delaware Valley White' was the most resistant.

scholarly journals Persistence of ryegrass, tall fescue and cocksfoot following sequential annual sowings: pasture yield, composition and density in 3 establishment years under sheep grazing in Canterbury

2018 ◽  
pp. 169-176
Author(s):  
Thomas M R Maxwell ◽  
Grant R Edwards ◽  
Gerald P Cosgrove
Keyword(s):  
Perennial Ryegrass ◽  
Tall Fescue ◽  
Block Design ◽  
Grass Species ◽  
Botanical Composition ◽  
Sheep Grazing ◽  
Sward Height ◽  
Long Term Effect ◽  
Forage Value

A long-term pasture persistence trial, consisting of repeated annual sowings, commenced in Canterbury in 2015 and is planned to continue until 2024. Preliminary results of the first 3 years sowings are reported. Each annual sowing used the same randomised block design of eight perennial ryegrass cultivars, one tall fescue and one cocksfoot cultivar, replicated four times. Grasses were drilled into a cultivated seedbed in autumn, with white clover broadcast-sown, then rolled with a Cambridge roller. Except for one 3-week spell in spring and in autumn to accumulate herbage to measure DM yield, botanical composition, morphology and sward density, plots were continuously stocked with sheep to maintain a 3-8 cm sward height from late-August to late-May. Results from the first 12 months following each of the three annual sowings (2015, 2016 and 2017) indicate establishment year had a greater influence on DM yield, botanical composition, grass leaf and stem proportions, and basal cover than did grass species or cultivar. Accumulating data from successive annual sowings and continued monitoring of each will help identify the long-term effect and difference between establishment years, as well as grass persistence traits for inclusion in the Forage Value Index ranking of perennial ryegrass cultivars.

scholarly journals Performance of carrot genotypes at two Jequitinhonha Valley sites

2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4059
Author(s):  
Gustavo Antônio Mendes Pereira ◽  
Maxwel Coura Oliveira ◽  
Altino Júnior Mendes Oliveira ◽  
José Sebastião Cunha Fernandes ◽  
Valter Carvalho de Andrade Júnior ◽  
...  
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Total Yield ◽  
Soil Conditions ◽  
Root Yield ◽  
Shoot Height ◽  
Climate Conditions ◽  
Randomized Complete Block Design ◽  
Commercial Yield ◽  
The Town

<p>The successful commercial use of carrot depends on the choice of cultivars that are well-adapted to soil and climate conditions at the cultivation site and on good consumer acceptance. The objective of this study was to evaluate the performance of carrot cultivars grown in autumn-winter in two towns with different climatic characteristics, in the High Jequitinhonha Valley, MG, Brazil. The experiments were conducted on the Rio Manso farm, in the town of Couto de Magalhães de Minas and on Campus JK at UFVJM, in the town of Diamantina, Minas Gerais, Brazil. Six carrot cultivars (Brasília, Nantes, Kuronan, Esplanada, Planalto and Tornado) were evaluated using a randomized complete block design with three replicates. The following morpho-agronomic characteristics were evaluated 100 days after sowing: shoot height, root length, root dry matter, total dry matter, harvest index, commercial yield and total yield root. The most suitable cultivars in Diamantina were Planalto, Tornado and Kuronan, and the cultivatar Planalto was the best suited to Couto de Magalhães de Minas. The agronomic performance of the cultivars was higher in Couto de Magalhães de Minas for the majority of the study variables, resulting in a higher total yield and commercial root yield. The climatic and soil conditions of Diamantina induced flowering in most cultivars, causing a loss to the commercial yield in autumn-winter cultivation.</p>

scholarly journals Yield performance of apple rootstocks of the Geneva series on replanting soil

2018 ◽  
Vol 53 (8) ◽  
pp. 924-933
Author(s):  
Frederico Denardi ◽  
Marcus Vinícius Kvitschal ◽  
Maraisa Crestani Hawerroth
Keyword(s):  
Block Design ◽  
Fruit Weight ◽  
Soil Conditions ◽  
Apple Rootstocks ◽  
Crop Season ◽  
Yield Performance ◽  
Randomized Complete Block Design ◽  
The Galaxy ◽  
Lower Ability ◽  
Agronomic Potential

Abstract: The objective of this work was to identify rootstocks with competitive agronomic potential to substitute those currently used in Southern Brazil for the Galaxy and Fuji Suprema apple scion cultivars cultivated on replanting soils. The experiment was carried out in the municipality of Lebon Regis, in the state of Santa Catarina, Brazil, from the 2009/2010 to the 2014/2015 crop season, in a randomized complete block design, with four replicates. The yield performance of the 'Galaxy' and 'Fuji Suprema' scions grafted on the G.056, G.202, G.213, G.814, G.896, G.969, M.9, and Marubakaido/M.9 rootstocks was evaluated. G.896 and G.814 stood out due to their superior annual and cumulative fruit yields, as well as to their greater yield regularity, although they showed lower ability of dwarfing the scion. The greatest average fruit weight of 'Galaxy' was obtained on G.056 and G.213. For 'Fuji Suprema', G.969 promoted smaller fruits, whereas the other rootstocks did not differ. All the evaluated rootstocks produced less suckers than Marubakaido/M.9 and less burrknots than M.9 and Marubakaido/M.9. In general, on replanting soil conditions, G.202 is promising among dwarfing rootstocks, mainly for 'Fuji Suprema'. G.056, G.814, and G.896 also stand out, and the two first are more specific for 'Fuji Suprema'.

scholarly journals Decomposition and Nutrient Release of Selected Cereal and Legume Crop Residues

2017 ◽  
Vol 9 (6) ◽  
pp. 108 ◽  
Author(s):  
Paul Anguria ◽  
George N. Chemining’wa ◽  
Richard N. Onwonga ◽  
Michael A. Ugen
Keyword(s):  
Dry Matter ◽  
Finger Millet ◽  
Crop Residues ◽  
Block Design ◽  
Nutrient Release ◽  
Legume Crop ◽  
Randomized Complete Block Design ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio

Crop residues have the potential to enhance soil fertility, but this is dependent on their biochemical quality. A study was conducted at the National Semi-Arid Resources Research Institute-Serere, Uganda to determine the chemical composition, nutrient release patterns and rates of selected crop residues. The design used was randomized complete block design with four replications. The treatments comprised of 20g of finger millet, sorghum, cowpea and groundnut crop residues. Finger millet had the highest initial C (36.28%) and N (3.46%), cowpea had the highest initial P (0.60%) and Ca (0.30%) and groundnut shells had significantly the highest initial K (1.01%). Finger millet husks with the lowest carbon/nitrogen ratio, had significantly the highest rate of dry matter disappearance and nutrient release, while groundnut shells with the highest carbon/nitrogen and carbon/phosphorus ratios had significantly the lowest nutrient release and dry matter disappearance rates. At the end of incubation, finger millet husks had significantly the lowest N (0.29%) and C (10.22%), while cowpea husks had the lowest P (0.27%), K (0.18%) and Ca (0.27%). Nutrient release and dry matter disappearance rates of crop residues occurred in the order of N > K > P > Ca and finger millet husks > cowpea husks > sorghum husks > groundnut shells, respectively. This study has demonstrated that finger millet husks released nutrients faster and this is beneficial for early planted crops, while groundnut shells released nutrients slowly which is appropriate for long term availability of plant nutrients.

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