scholarly journals Determination of the optimal number of evaluations in half-sib progenies of kale by Bayesian approach

2021 ◽  
Vol 39 (1) ◽  
pp. 20-25
Author(s):  
Alcinei M Azevedo ◽  
Derly José H da Silva ◽  
Rogério Seus ◽  
Elis Marina de Freitas ◽  
Daniel F Afonso ◽  
...  
Keyword(s):  
Bayesian Approach ◽  
Block Design ◽  
Optimal Number ◽  
Fresh Mass ◽  
Coefficient Of Determination ◽  
Randomized Block Design ◽  
High Regularity ◽  
Minimum Number ◽  
Vegetative Cycle

ABSTRACT Kale has a long vegetative cycle, requiring a lot of labor, due to the need for tutoring, thinning and multiple harvests, leading to difficulties in the maintenance and evaluation of experiments. Thus, the objective was to estimate the minimum number of evaluations for the assertive selection of half-sib progenies of kale by means of a repeatability study by Bayesian approach. Twenty four half-sib progenies were evaluated in a randomized block design with four replicates and five plants per plot. The number of shoots, number of marketable leaves, fresh mass of marketable leaves and fresh mass per leaf were measured throughout 15 harvests. All traits showed high estimates of the repeatability, indicating high regularity in the expression of the traits during the harvesting period. With eight harvests it is possible to evaluate all the traits with a coefficient of determination superior to 85% in half-sib progenies of kale.

scholarly journals Repeatability and heritability of production characters in strawberry fruits

2020 ◽  
Vol 38 (1) ◽  
pp. 89-93
Author(s):  
Valter C Andrade Júnior ◽  
Altino JM Oliveira ◽  
Amanda G Guimarães ◽  
Marcos Aurélio M Ferreira ◽  
Vytória P Cavalcanti ◽  
...  
Keyword(s):  
Block Design ◽  
Coefficient Of Determination ◽  
Repeatability Coefficient ◽  
Labor Costs ◽  
Breeding Programs ◽  
Randomized Block Design ◽  
Minimum Number ◽  
Commercially Important ◽  
Marketable Fruit ◽  
Fruit Mass

ABSTRACT The estimation of repeatability coefficient provides support to define the number and the appropriate period of genotype evaluations, obtaining better success in breeding programs, in order to lower labor costs. Therefore, knowing repeatability and heritability parameters is relevant. Thus, the aim of this study was to estimate the repeatability and heritability coefficients and accurately determine the number of measurements. Eight strawberry cultivars were analyzed in a randomized block design with four replicates and eighteen plants per plot, being harvested twice a week over a period of six months (May to October, 2012), totalizing six evaluations. Among the evaluated traits, the estimated heritabilities ranged from 3.13% (number of fruits) to 40.20% (average fruit mass) whereas the repeatability ranged from 9.00 to 42.06% for the same characters. The minimum number of evaluations, to reach a coefficient of determination with an accuracy of about 80%, ranged from the maximum of 40 for fruit number and the minimum of 6 for average fruit mass. In order to be considered commercially important marketable fruit mass, minimum of 20 evaluations are required, it means, at least, 20 months.

scholarly journals Least limiting water range in Oxisols under different levels of machine traffic

2018 ◽  
Vol 8 (2) ◽  
pp. 337-346
Author(s):  
Karina De Vares Rossetti ◽  
José Frederico Centurion
Keyword(s):  
Bulk Density ◽  
Block Design ◽  
Corn Yield ◽  
Soil Penetration Resistance ◽  
Corn Crop ◽  
Randomized Block Design ◽  
Crop Development ◽  
Least Limiting Water Range ◽  
Different Levels

This work aimed, to evaluate the structural behavior of Oxisols based on the least limiting water range (LLWR) and establish relations with corn crop. The experiment was carried out in a randomized block design with five treatments and four replications. Soil samples collected at the layer of 0-0.20 m depth in a Haplustox (LVd) and an Eutrustox (LVef) were used. The compaction treatments consisted of T0= no additional compaction; T1 and T2= two and four passes with a 4 t tractor, respectively; T3 and T4 = two and four passes with a 10 t tractor, respectively. The range of LLWR variation in the LVd was the lowest one and varied from 0.01 to 0.04 m3 m-3, whereas in the LVef varied from 0.03 to 0.13 m3 m-3 for the critical soil penetration resistance (PRc) of 2 MPa. It was observed that critical bulk density (BDc) values were 1.76 and 1.40 Mg m-3 in the LVd and the LVef, respectively. The highest frequency of bulk density (BC ≥ BDc) occurred from the T1 to T4 (LVd) and from the T2 to T4, however, a reduction in corn yield was not observed. The determination of the LLWR was efficient and complementary for identifying more favorable or more impeditive conditions to compaction in the LVef for the corn crop development in relation to the LVd.

Prediction of dry matter accumulation in bitter vetch

2017 ◽  
Author(s):  
Ufuk Karadavut ◽  
Adil Bakoglu ◽  
Halit Tutar ◽  
Kagan Kokten ◽  
Hava Seyma Yilmaz
Keyword(s):  
Growth Models ◽  
Block Design ◽  
Coefficient Of Determination ◽  
Dry Matter Accumulation ◽  
Randomized Block Design ◽  
Bitter Vetch ◽  
Best Fitting ◽  
Local Genotypes ◽  
Best Fit ◽  
Different Sources

This study was carried out in Bingol province on eastern Anatolian Region between 2013 and 2015. In this study, we obtained 14 bitter vetch genotypes from different sources. The experiment was carried our in three replications in randomized block design. Each plant was weekly measured for 6 weeks starting from germination. For each plant, plant height, fresh and dry stem weight, fresh and dry leaf weights were determined. Logistic, Richards and Weibull growth models were fitted to describe the growth pattern of the genotypes. The best fitting model criteria used were coefficient of determination and mean squared. Richards’s growth model was found to best fit the data for most of the genotypes. Logistic model was the worst fit. In Turkey, climate and soil properties have very large variations. For this, local genotypes showed large variation according to plating areas. YEREL LICE genotype showed more stable and it is the height identified all growth models than other local genotypes. However, IFVE 2923 SEL and IFVE 2977 SEL 2802 these genotypes gave positive results in different environmental conditions.

scholarly journals Minimum number of common bean plants per plot to assess field resistance to white mold

2011 ◽  
Vol 11 (4) ◽  
pp. 358-364 ◽  
Author(s):  
Flávia Fernandes Carneiro ◽  
Walmes Marques Zeviani ◽  
João Bosco dos Santos ◽  
Renato Sérgio Batista Carvalho ◽  
Felipe Couto Alves ◽  
...  
Keyword(s):  
Common Bean ◽  
Block Design ◽  
Field Resistance ◽  
White Mold ◽  
Randomized Block Design ◽  
Bean Plants ◽  
Minimum Number ◽  
Cv Model ◽  
Diagrammatic Scale ◽  
Common Bean Plants

ABSTRACT This study aimed to determine the minimum number of plants per plot to assess the field resistance in common bean to white mold. Thirteen cultivars were inoculated with six isolates of Sclerotinia sclerotiorum and evaluated in a randomized block design with three replications and plots consisting of 1-m rows with 15 plants. Plants were inoculated by the straw test as proposed by Petzoldt and Dickson (1996), to evaluate partial resistance in a greenhouse. Eight days after inoculation the disease severity was evaluated on a 1-9 diagrammatic scale, where 1 = asymptomatic plants to 9 = plant death. To determine the minimum number of plants per plot, the following methods were used: maximum curvature, segmented linear model, quadratic segmented model and the relative CV model. There were significant differences among cultivars and isolates and no significant cultivar - isolate interaction. It was observed that eight plants per plot is an adequate number to assess the reaction of common bean to white mold.

scholarly journals Pengaruh Konsentrasi Nutrisi AB Mix terhadap Pertumbuhan dan Hasil Sawi Pakcoy (Brassica rapa L.) dengan Hidroponik Sistem Sumbu (Wick System)

2020 ◽  
Vol 2 (2) ◽  
pp. 98-105
Author(s):  
Made Suarsana ◽  
I Putu Parmila ◽  
Kadek Agus Gunawan
Keyword(s):  
Statistical Analysis ◽  
Sea Level ◽  
Nutrient Concentration ◽  
Block Design ◽  
Optimum Concentration ◽  
Growth And Yield ◽  
Coefficient Of Determination ◽  
Fresh Weight ◽  
Randomized Block Design ◽  
Wet Weight

This study aims to determine the effect of the concentration of AB Mix nutrients on the growth and yield of pakcoy plants. This research has been carried out at the agronet house of the Faculty of Agriculture, Panji Sakti University at an altitude of 39 m above sea level (above sea level), in March-May 2019. The experimental design used a single randomized block design (RCBD), namely the concentration of the AB Mix nutrition treatment ( K). Statistical analysis showed that AB Mix nutrient concentration had a very significant effect (p <0.01) on plant height at 14 days after planting, 21 days after planting, 28 days after planting, total wet weight per plant, leaf area per plant, and economic fresh weight per plant. The nutrient concentration of AB Mix 1.2% provides the best growth and yield of pakcoy plants. The higher concentration of AB Mix nutrition given causes the total wet weight per plant to change quadratically Ŷ = -137.83x2 + 325.54x - 88.997 with the coefficient of determination (R2) = 1 so that the optimum concentration = 1.18% and wet weight is obtained maximum total planting = 103,226 grams.Keywords: hydroponics, AB Mix nutrition, pakcoy Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi nutrisi AB Mix terhadap pertumbuhan dan hasil tanaman pakcoy. Penelitian ini telah dilaksanakan di rumah agronet Fakultas Pertanian Universitas Panji Sakti pada ketinggian tempat 39 m dpl (dari atas permukaan laut), pada bulan Maret -Mei 2019. Rancangan percobaan menggunakan rancangan acak kelompok (RAK) faktor tunggal yaitu perlakuan konsentrasi nutrisi AB Mix (K). Hasil analisis staistik menunjukkan konsentrasi nutrisi AB Mix berpengaruh sangat nyata (p<0,01) terhadap tinggi tanaman pada umur 14 hst, 21 hst, 28 hst, 35 hst, berat basah total per tanaman, luas daun per tanaman, dan berat segar ekonomis per tanaman. Konsentrasi nutrisi AB Mix 1,2% memberikan pertumbuhan dan hasil tanaman pakcoy terbaik. Semakin tinggi konsentrasi nutrisi AB Mix yang diberikan menyebabkan berat basah total per tanaman berubah secara kuadratik yaitu Ŷ= -137,83x2 + 325,54x - 88,997 dengan koefisien determinasi (R2) = 1 sehingga diperoleh konsentrasi optimum = 1,18% dan berat basah total pertanaman maksimum =103,226 gram.Kata kunci: hidroponik, nutrisi AB Mix, pakcoy

scholarly journals Pengaruh Konsentrasi Nutrisi AB Mix terhadap Pertumbuhan dan Hasil Sawi Pakcoy (Brassica rapa L.) dengan Hidroponik Sistem Sumbu (Wick System)

2020 ◽  
Vol 2 (2) ◽  
pp. 98-105
Author(s):  
Made Suarsana ◽  
I Putu Parmila ◽  
Kadek Agus Gunawan
Keyword(s):  
Statistical Analysis ◽  
Sea Level ◽  
Nutrient Concentration ◽  
Block Design ◽  
Optimum Concentration ◽  
Growth And Yield ◽  
Coefficient Of Determination ◽  
Fresh Weight ◽  
Randomized Block Design ◽  
Wet Weight

This study aims to determine the effect of the concentration of AB Mix nutrients on the growth and yield of pakcoy plants. This research has been carried out at the agronet house of the Faculty of Agriculture, Panji Sakti University at an altitude of 39 m above sea level (above sea level), in March-May 2019. The experimental design used a single randomized block design (RCBD), namely the concentration of the AB Mix nutrition treatment ( K). Statistical analysis showed that AB Mix nutrient concentration had a very significant effect (p <0.01) on plant height at 14 days after planting, 21 days after planting, 28 days after planting, total wet weight per plant, leaf area per plant, and economic fresh weight per plant. The nutrient concentration of AB Mix 1.2% provides the best growth and yield of pakcoy plants. The higher concentration of AB Mix nutrition given causes the total wet weight per plant to change quadratically Ŷ = -137.83x2 + 325.54x - 88.997 with the coefficient of determination (R2) = 1 so that the optimum concentration = 1.18% and wet weight is obtained maximum total planting = 103,226 grams.Keywords: hydroponics, AB Mix nutrition, pakcoy Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi nutrisi AB Mix terhadap pertumbuhan dan hasil tanaman pakcoy. Penelitian ini telah dilaksanakan di rumah agronet Fakultas Pertanian Universitas Panji Sakti pada ketinggian tempat 39 m dpl (dari atas permukaan laut), pada bulan Maret -Mei 2019. Rancangan percobaan menggunakan rancangan acak kelompok (RAK) faktor tunggal yaitu perlakuan konsentrasi nutrisi AB Mix (K). Hasil analisis staistik menunjukkan konsentrasi nutrisi AB Mix berpengaruh sangat nyata (p<0,01) terhadap tinggi tanaman pada umur 14 hst, 21 hst, 28 hst, 35 hst, berat basah total per tanaman, luas daun per tanaman, dan berat segar ekonomis per tanaman. Konsentrasi nutrisi AB Mix 1,2% memberikan pertumbuhan dan hasil tanaman pakcoy terbaik. Semakin tinggi konsentrasi nutrisi AB Mix yang diberikan menyebabkan berat basah total per tanaman berubah secara kuadratik yaitu Ŷ= -137,83x2 + 325,54x - 88,997 dengan koefisien determinasi (R2) = 1 sehingga diperoleh konsentrasi optimum = 1,18% dan berat basah total pertanaman maksimum =103,226 gram.Kata kunci: hidroponik, nutrisi AB Mix, pakcoy

EFFECT OF SOME PLANT GROWTH REGULATORS ON FRUIT YIELD AND SEED ATTRIBUTES OF OKRA (ABELMOSCHUS ESCULENTUS)

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
RAVI KUMAR ◽  
A. K. PAL ◽  
SANDEEP K. MAURIYA ◽  
KULVEER SINGH YADAV ◽  
ARUN KUMAR
Keyword(s):  
Seed Yield ◽  
Foliar Application ◽  
Block Design ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Randomized Block Design ◽  
Minimum Number ◽  
100 Seed Weight ◽  
Number Of Seeds ◽  
Fruit Diameter

An investigation was carried out during rainy season at the HorticultureResearch Farm, Department of Horticulture, Institute of Agriculture Sciences, Banaras Hindu University, Varanasi. The investigation comprised ten treatments viz.,three levels each of gibberellic acid GA3 (50, 75 and 100 ppm), cytokinin (50, 75 and 100 ppm) and NAA (50, 75 and 100 ppm) along with control (distilled water) were applied as foliar application at 30 and 40 days after transplanting. The experiment was laid out in a randomized block design with three replications. Results revealed that, the minimum number of days (49.97) to 1st edible fruits harvesting was recorded in 100 ppm GA3 which was statistically at par with 75 ppm GA3. The maximum fruit length (13.22 cm), fruit diameter (1.82 cm), number of seeds per fruit (50.13), number of fruits per plant (23.47), fruit yield per plant (354.30 g), highest fruit yield (141.72 q/ha), 100 seed weight (5.18 g), seed yield per plant (47.97 g) and highest seed yield (19.19 q/ha) were recorded with GA3 at 100 ppm. The maximum fresh fruit weight (15.85 g) was recorded in 50 ppm.

scholarly journals Determination of the Super-Elliptic Shape of Tire-Soil Contact Area Using Image Processing Method

2015 ◽  
Vol 48 (2) ◽  
pp. 5-14
Author(s):  
R. Farrokhi Teimourlou ◽  
H. Taghavifar
Keyword(s):  
Image Processing ◽  
Contact Area ◽  
Block Design ◽  
Processing Method ◽  
Coefficient Of Determination ◽  
Inflation Pressure ◽  
Wheel Load ◽  
Image Processing Method ◽  
Proposed Model

Abstract The present study is aimed at determination of the super-elliptic shape of tire-soil contact area using image processing method. Contact area has a substantial role on determination of soil compaction and tractive parameters of agricultural tractors. A very well-known model in this realm is to describe the contact area with superellipse geometry. A soil bin testing facility equipped with a single-wheel tester was utilized to conduct the needed experiments. The experiments were carried out at three levels of wheel load, three levels of tire inflation pressure with three replicates in a completely randomized block design. Corresponding images were taken for each of the experiments and the images were processed accordingly. The contact length and width were determined using imdistline command in MATLAB commercial software. This experiment was conducted at three levels of wheel load (2, 3, and 4 kN), and three levels of tire inflation pressure (100, 200, and 300 kPa) with three replications. The aforementioned parameters were applied consequently in the superellipse model and the contact area was computed. The obtained results disclosed that increase of wheel load increases the contact area. Contradictory, increment of tire inflation pressure reduces the formed contact area. Additionally, the potential of contact area determination with the proposed model was compared with that of actual values, which denoted coefficient of determination equal to 0.96, which shows the promising ability of the proposed model and the appropriateness of describing contact area with superellipse geometry

scholarly journals Determination of Bispyribac Sodium 10% SC (Herbicide) Residue Level in Straw, Grain and Soil Using HPLC Method

2014 ◽  
Vol 17 ◽  
pp. 30-40 ◽  
Author(s):  
C. Tamilselvan ◽  
S. John Joseph ◽  
V. Angayarkanni
Keyword(s):  
Block Design ◽  
Sodium Content ◽  
Hplc Method ◽  
Rice Crop ◽  
Minimum Detectable Concentration ◽  
Randomized Block Design ◽  
Detectable Concentration ◽  
And Control ◽  
Control Water

A field trial was conducted to evaluate the residues of Bispyribac sodium 10 % SC on rice crop during Kharif season 2013 at Kandikai in Thiruvallur District, Tamilnadu, India. Randomized block design was followed withthree treatments forthree replicates. Bispyribac sodium 10 % SC 200 g a.i./ha, 500 g a.i./ha and control (water spray) was sprayed using hand operated Maax battery sprayer with a spray volume of 300 litres per hectare at 15 days after transplantation of rice crop (ADT 45). At harvest, samples of grain, straw and soil were collected replicate wise from each treatment along with the control. These samples were stored in icebox and transfer to the laboratory under cooled condition for analysis.All the residues samples were analyzed for Bispyribac sodium content by a validated HPLC method at the minimum detectable concentration of 0.01 ppm. The result revealed that no detectable level of Bispyribac sodium in straw, grain and soil at harvest. Thepost treatmentand pre-harvest intervalwas 60 days after transplantation.

scholarly journals GROWTH RESPONSE AND NITROGEN USE EFFICIENCY OF PALM OIL VARIETY ON N FERTILIZING IN PRE NURSERY

Agric ◽  
2018 ◽  
Vol 30 (1) ◽  
pp. 43-50
Author(s):  
Wilda Lumban Tobing ◽  
Chairani Hanum ◽  
Edy Sigit Sutarta
Keyword(s):  
Palm Oil ◽  
Nitrogen Use Efficiency ◽  
Oil Palm ◽  
Growth Response ◽  
Block Design ◽  
Nitrogen Use ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Use Efficiency

Oil palm plantation expansion in Indonesia continue to increase year by year. Several varieties of oil palm have been produced but not much information about the growth characteristics. Urea as nitrogen fertilizer has become a staple for the cultivation cycle of oil palm. The determination of nitrogen use efficiency (NUE) on palm oil varieties can be used to find out N requirement of each plant according to their needs. This research was aimed to analyze the growth response and NUE of palm oil varieties to fertilizer N at pre nursery. It was conducted in nursery area at Yos Sudarso Binjai Street and Pusat Penelitian Kelapa Sawit, Medan from November 2016 until March 2017 using Completely Randomized Block Design followed by Scott Knott test at α = 5%. There were 35 treatment combinations that used seven varieties of Dura x Pisifera Medan Palm Oil Research Center (AVROS, Simalungun, PPKS 540, Yangambi, PPKS 718, PPKS 239, and Langkat) with N consisting of 5 levels (0 ; 0,5 g ; 1 g; 1.5 g and 2 g). The results showed that the application of N fertilizer influence significant effect on the growth of stem circumference and the number of leaves. The highest of nitrogen use efficiency is found in Simalungun varieties with N application of 1,5 g/plant.

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