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Search Results: 1 - 10 of 3113 matches for " number of spears "
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Evaluation of Green Asparagus Varietis in the Bio-Bio Region, Chile
González A,María Inés;
Agricultura Técnica , 2007, DOI: 10.4067/S0365-28072007000300001
Abstract: a trial was established using three month old asparagus (asparagus officinalis l.) plants in a volcanic soil at chillán (36°32? s; 71°55? w). experimental design was randomized complete blocks with four replicates. plots had four 6m long rows of plants. distance between rows was 1.5 m and in-row 0.2 m. the evaluated cultivars were: ?atlas?, ?grande? and ?apollo? from asparagus seeds and transplants (california), ?jersey giant?, ?jersey gem?, ?jersey general?, ?jersey king?, ?jersey knight? and ?jersey supreme? from jersey asparagus farms (new jersey), and the controls were ?uc-157? f1 and f2. spears were trimmed 18 cm long after harvest. the highest cumulative marketable yield was obtained by ?jersey supreme? (43 mg ha-1 in five years), and the lowest one by ?apollo? (17.8 mg ha-1). marketable yield of both control ?uc-157? f1 (24.9 mg ha-1) and f2 (24.3 mg ha-1) was similar (p ≤ 0.05) to the other jersey cultivars, but higher than ?apollo?. the main disadvantage of ?jersey supreme? is the purple coloration of its bud scales, and a purple cast to the butt of the spear, therefore discarded for the fresh market, but suitable for freezing. another disadvantage is that spears tend to open to a smaller height than ?uc-157?, and 10% more of its production is destined to internal market (país category)
EFECTOS DE LA PROFUNDIDAD DE PLANTACIóN Y POBLACIóN DE PLANTAS EN LA CALIDAD Y RENDIMIENTO DE ESPáRRAGO VERDE
González A.,María Inés; del Pozo L.,Alejandro;
Agricultura Técnica , 2003, DOI: 10.4067/S0365-28072003000300001
Abstract: the effect on asparagus (asparagus officinalis l.) yield and quality of three planting depths (10, 20 and 30 cm) and two plant densities (22 222 and 33 333 plants ha-1) was assessed in the sub-humid mediterranean climatic zone of chile. crowns of the cv. uc-157 f1 were transplanted to a volcanic soil in september 1995. the experimental design was a randomized complete block in a factorial arrangement, with four replications. the plots were harvested on a daily basis during five seasons (1997-2001), and the number, weight and diameter of spears were determined after trimming at 18 cm. no interaction was detected between the studied factors on yield and its components. high plant density only increased the yield in the first harvest season (1997), whereas planting depth had an effect during the first four harvest seasons (1997-2000), but this effect disappeared in the fifth harvest season (2001). the maximum commercial yield was obtained during the third harvest season (1999) at the most superficial planting depth (10 cm) with production of 10.2 t ha-1. the number of harvested spears per m2 and the proportion of thin spears (7-17 mm) decreased on increasing planting depth from 10 to 30 cm. the number of utilized buds per plant was greater (p £ 0,05) at the lowest plant density (22,222 plants ha-1) and decreased as planting depth increased from 10 to 30 cm. finally, seven years after planting, the asparagus crown depth was shallower in the three planting depths but continued being different (p £ 0,05).
Evaluation of Green Asparagus Varietis in the Bio-Bio Region, Chile Evaluación de Variedades de Espárrago Verde en la Región del Bío-Bío, Chile
María Inés González A
Agricultura Técnica , 2007,
Abstract: A trial was established using three month old asparagus (Asparagus officinalis L.) plants in a volcanic soil at Chillán (36°32’ S; 71°55’ W). Experimental design was randomized complete blocks with four replicates. Plots had four 6m long rows of plants. Distance between rows was 1.5 m and in-row 0.2 m. The evaluated cultivars were: ‘Atlas’, ‘Grande’ and ‘Apollo’ from Asparagus Seeds and Transplants (California), ‘Jersey Giant’, ‘Jersey Gem’, ‘Jersey General’, ‘Jersey King’, ‘Jersey Knight’ and ‘Jersey Supreme’ from Jersey Asparagus Farms (New Jersey), and the controls were ‘UC-157’ F1 and F2. Spears were trimmed 18 cm long after harvest. The highest cumulative marketable yield was obtained by ‘Jersey Supreme’ (43 Mg ha-1 in five years), and the lowest one by ‘Apollo’ (17.8 Mg ha-1). Marketable yield of both control ‘UC-157’ F1 (24.9 Mg ha-1) and F2 (24.3 Mg ha-1) was similar (P ≤ 0.05) to the other Jersey cultivars, but higher than ‘Apollo’. The main disadvantage of ‘Jersey Supreme’ is the purple coloration of its bud scales, and a purple cast to the butt of the spear, therefore discarded for the fresh market, but suitable for freezing. Another disadvantage is that spears tend to open to a smaller height than ‘UC-157’, and 10% more of its production is destined to internal market (País category) Se estableció un ensayo con plantas de espárrago (Asparagus officinalis L.) de tres meses de edad, en un suelo derivado de cenizas volcánicas en Chillán (36°32’ lat. Sur; 71°55’ long. Oeste). El dise o experimental fue de bloques completos al azar con cuatro repeticiones. Las parcelas estuvieron compuestas por cuatro hileras de 6 m de largo. La distancia entre hileras fue de 1,5 m, y 0,2 m sobre la hilera. Los cultivares evaluados fueron: ‘Atlas’, ‘Grande’ y ‘Apollo’ de Asparagus Seeds and Transplants (California), ‘Jersey Giant’, ‘Jersey Gem’, ‘Jersey General’, ‘Jersey King’, ‘Jersey Knight’ y ‘Jersey Supreme’ de Jersey Asparagus Farms (New Jersey), y los testigos ‘UC-157’ F1 y F2. Los turiones se cortaron a 18 cm después de cosechados. El rendimiento comercial acumulado más elevado (P ≤ 0,05) correspondió a ‘Jersey Supreme’ (43 Mg ha-1 en cinco a os) y el inferior a ‘Apollo’ (17,8 Mg ha-1). El rendimiento comercial de ambos testigos ‘UC-157’ F1 (24,9 Mg ha-1) y F2 (24,3 Mg ha-1) fue similar (P ≤ 0,05) al de los otros cultivares Jersey, pero más alto que el de ‘Apollo’. La principal desventaja de ‘Jersey Supreme’ es la coloración púrpura de sus brácteas y de la base de los turiones, lo que la descarta para el mercado fresco, pero es adecuada para congelado. Otr
EFECTOS DE LA PROFUNDIDAD DE PLANTACIóN Y POBLACIóN DE PLANTAS EN LA CALIDAD Y RENDIMIENTO DE ESPáRRAGO VERDE Effect of planting depth and plant population on quality and yield of green asparagus
María Inés González A.,Alejandro del Pozo L.
Agricultura Técnica , 2003,
Abstract: Se estudió el efecto de tres profundidades (10, 20 y 30 cm) y dos densidades de plantación (22.222 y 33.333 plantas ha-1) sobre el rendimiento y calidad del espárrago (Asparagus officinalis L.) en la zona climática mediterránea sub-húmeda de Chile. Se trasplantaron coronas del cv. UC-157 F1 a un suelo de origen volcánico en septiembre de 1995. El dise o experimental fue de bloques completos al azar en un arreglo factorial con cuatro repeticiones. Las parcelas fueron cosechadas diariamente durante cinco temporadas (1997-2001), y se determinó el número, peso y diámetro de los turiones después de cortarlos a 18 cm. No se detectó interacción entre los factores en estudio sobre el rendimiento y sus componentes. La densidad de plantas sólo tuvo efecto en la producción de turiones en la primera temporada de cosecha (1997), mientras que la profundidad de plantación tuvo efecto durante las primeras cuatro temporadas (1997-2000), desapareciendo en la quinta temporada de cosecha (2001). El máximo rendimiento comercial se obtuvo en la tercera temporada de cosecha (1999) con la menor profundidad de plantación (10 cm), alcanzando a 10,2 t ha-1 El número de turiones cosechados por m2 y la proporción de turiones delgados (7-17 mm) disminuyó al aumentar la profundidad de plantación desde 10 a 30 cm. El número de yemas utilizadas por planta fue superior (P <= 0,05) en la menor densidad de plantas (22.222 plantas ha-1) y disminuyó al aumentar la profundidad de plantación desde 10 a 30 cm. Finalmente, después de siete a os desde la plantación, la profundidad de las coronas de espárrago disminuyó en las tres profundidades de plantación, pero continúan siendo diferentes (P <= 0,05). The effect on asparagus (Asparagus officinalis L.) yield and quality of three planting depths (10, 20 and 30 cm) and two plant densities (22 222 and 33 333 plants ha-1) was assessed in the sub-humid Mediterranean climatic zone of Chile. Crowns of the cv. UC-157 F1 were transplanted to a volcanic soil in September 1995. The experimental design was a randomized complete block in a factorial arrangement, with four replications. The plots were harvested on a daily basis during five seasons (1997-2001), and the number, weight and diameter of spears were determined after trimming at 18 cm. No interaction was detected between the studied factors on yield and its components. High plant density only increased the yield in the first harvest season (1997), whereas planting depth had an effect during the first four harvest seasons (1997-2000), but this effect disappeared in the fifth harvest season (2001). T
The Unknown Conservation Laws  [PDF]
Richard A. Hutchin
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.66078
Abstract: There are six standard conservation laws of physics: energy, momentum, angular momentum, charge, baryon number and lepton number. It is not generally recognized that there are also a vast number of other conservation laws in physics which are rigorously conserved and quite inde-pendent of these six. A simple proof of these other conservation laws is given as well as examples. The implication of these additional conservation laws is discussed for elementary particles.
Understanding of Number Concepts and Number Operations through Games in Early Mathematics Education  [PDF]
Lu Chung Chin, Effandi Zakaria
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.612130
Abstract: Games Based Learning Module (GBLM) in this study has been designed and adapted by the researcher by referring to the National Pre-school Standard Curriculum (NPSC) and local context. The games were developed to test the effectiveness toward the mastery of number concepts and number operations comprehension. In this research, number concepts cover the skills of counting and comparing. Both these skills are basic mathematics that must be mastered by children before they could pursue advanced mathematics learning. Number operations include the skills of addition and subtraction. This research used quasi-experimental design with non-equivalent control group pretest/posttest research design. The experimental group consisted of 23 pre-school pupils while the control group comprised of 24 pre-school pupils. The experimental group used the GBLM module while the control group used the traditional methods. Research data was analyzed using SPANOVA (Split Plot ANOVA Test). The results show that there is significant main effect of pre-posttest and interaction effect of pre-post and group. The results also show that there is no significant main effect of group.
Representations of Each Number Type That Differ by Scale Factors  [PDF]
Paul Benioff
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.34057
Abstract: For each type of number, structures that differ by arbitrary scaling factors and are isomorphic to one another are described. The scaling of number values in one structure, relative to the values in another structure, must be compensated for by scaling of the basic operations and relations (if any) in the structure. The scaling must be such that one structure satisfies the relevant number type axioms if and only if the other structure does.
A Sieve for Prime Based on Extension Form of Not Prime  [PDF]
Gabriele Martino
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.31014
Abstract:

This paper will illustrate two versions of an algorithm for finding prime number up to N, which give the first version complexity

\"\" (1)

where c1, c2 are constants, and N is the input dimension, and gives a better result for the second version. The method is based on an equation that expresses the behavior of not prime numbers. With this equation it is possible to construct a fast iteration to verify if the not prime number is generated by a prime and with which parameters. The second method differs because it does not pass other times over a number that has been previously evaluated as not prime. This is possible for a recurrence of not prime number that is (mod 3) = 0. The complexity in this case is better than the first. The comparison is made most with Mathematics than by computer calculation as the number N should be very big to appreciate the difference between the two versions. Anyway the second version results better. The algorithms have been

Bondage Number of 1-Planar Graph  [PDF]
Qiaoling Ma, Sumei Zhang, Jihui Wang
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.12013
Abstract: The bondage number of a nonempty graph G is the cardinality of a smallest set of edges whose removal from G results in a graph a domination number greater than the domination number of G. In this paper, we prove that for a 1-planar graph G.
Dufour and Soret Effect on Steady MHD Flow in Presence of Heat Generation and Magnetic Field past an Inclined Stretching Sheet  [PDF]
M Enamul Karim, M. A. Samad, M Maruf Hasan
Open Journal of Fluid Dynamics (OJFD) , 2012, DOI: 10.4236/ojfd.2012.23009
Abstract: An analysis of two-dimensional steady magneto-hydrodynamic free convection flow of an electrically conducting, viscous, incompressible fluid past an inclined stretching porous plate in the presence of a uniform magnetic field and thermal radiation with heat generation is made. Both the Dufour and Soret effects are considered for a hydrogen-air mixture as the non-chemically reacting fluid pair. The equations governing the flow, temperature and concentration fields are reduced to a system of joined non-linear ordinary differential equations by similarity transformation. Non-linear differential equations are integrated numerically by using Nachtsheim-Swigert shooting iteration technique along with sixth order Runge-Kutta integration scheme. Finally the significance of physical parameters which are of engineering interest are examined both in graphical and tabular form.
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