scholarly journals Repeatability and divergence among genotypes of Desmanthus sp. in a semiarid region

2021 ◽  
Vol 56 ◽  
Author(s):  
Márcio Vieira da Cunha ◽  
Mércia Virginia Ferreira dos Santos ◽  
Aurielle Silva Medeiros ◽  
Joelma de Lira Freire ◽  
José Carlos Batista Dubeux Junior ◽  
...  
Keyword(s):  
Leaf Length ◽  
Forage Yield ◽  
Stem Diameter ◽  
Semiarid Region ◽  
Area Index ◽  
The Real ◽  
Real Value ◽  
Number Of Leaves ◽  
Peduncle Length ◽  
Pod Length

Abstract: The objective of this work was to evaluate the divergence among genotypes of Desmanthus sp. regarding morphological, productive, and qualitative characteristics, as well as to estimate the number of observations necessary to predict the real value of these characteristics. The experiment was conducted in the semiarid of the state of Pernambuco, Brazil, using 26 genotypes of Desmanthus sp. from different locations in the region. Seven evaluations were carried out from July 2013 to July 2014. Tocher’s grouping method and standardized average Euclidean distance were used. The coefficients of repeatability (r) and determination (R2) were estimated using two models of the analysis of variance, principal components based on the correlation or covariance matrix, and structural analysis based on the correlation matrix. The variables with the greatest weights were stem diameter, leaf area index, and forage yield, with frequencies of 22.05, 17.57, and 14.58%, respectively. Morphological, productive, and qualitative variability was observed among the genotypes of Desmanthus sp. All characteristics presented r and R2 of high magnitude in the methods of analysis. Up to four evaluation cycles are required to predict (R2=95%) the real value of stem diameter, peduncle length, plant height, leaf length and width, number of leaves, and pod length.

scholarly journals Line×tester analysis in lilium×formolongi: identification of superior parents for growth and flowering traits

2019 ◽  
Vol 17 (1) ◽  
pp. 175-187
Author(s):  
R Rai ◽  
J Shrestha ◽  
JH Kim
Keyword(s):  
Plant Height ◽  
Gene Action ◽  
Block Design ◽  
Leaf Length ◽  
Stem Diameter ◽  
Leaf Width ◽  
Days To Flowering ◽  
Flower Diameter ◽  
Number Of Leaves ◽  
Almost All

An experiment was carried out using eight double cross F1s (DCF1s) as lines and two testers to obtain sixteen Line ×Tester hybrids for the evaluation of major growth and flowering traits thereby to understand the breeding potentiality of the parental lines. The performance of growth and flowering traits of all twenty-six genotypes were evaluated in a randomized complete block design (RCBD) with three replications. The analysis of variance (ANOVA) showed all the genotypes were significantly different for all agro-morphological traits under study. The estimated general combining ability (GCA) effects showed that parent 5(P5), were superior for plant height, stem diameter, number of leaves, leaf length, days to flowering and attitude of floral axis followed by parent 2(P2) for leaf length, leaf width, days to flowering and attitude of floral axis and parent7 (P7) for number of flower, flower diameter, bud length and attitude for floral axis. Likewise; tester 1 found to be best combiner with significant GCA effect for almost all growth and flowering traits (except number of leaves). The plant height, leaf width, number of flower and attitude of floral axis showed prevailing additive gene action while stem diameter, number of leaves, leaf length, days to flowering, flower diameter and bud length indicated predominance of dominance gene action. We can conclude that parent P5, parent P2 and parent P7 can be used as good mother lines and the tester 1, as good donor for the seed production. SAARC J. Agri., 17(1): 175-187 (2019)

scholarly journals Evaluation of Maize Accessions for Nutrients Composition, Forage and Silage Yields

2014 ◽  
Vol 6 (4) ◽  
pp. 178 ◽  
Author(s):  
J. T. Amodu ◽  
T. T. Akpensuen ◽  
D. D. Dung ◽  
R. J. Tanko ◽  
A. Musa ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Crude Protein ◽  
Dry Matter ◽  
Forage Yield ◽  
Crude Fibre ◽  
Area Index ◽  
Maize Seeds ◽  
Nitrogen Free Extract ◽  
Number Of Leaves

An experiment was conducted to evaluate the yield of forage, silage and nutrients composition of two maize accessions: West Atlantic Seed Alliance 1 (WASA1) and an accession from Shika tagged (SHIMAZ). The maize seeds were planted in plots of 5 m x 5 m (25 m2) size with four replicates for each accession. The results showed that, there was no significant (P > 0.05) difference between the accessions for plant height and number of leaves at 4, 6, 8 and 10 weeks after sowing (WAS), but leaf area index (LAI) was significantly (P < 0.05) higher in SHIMAZ accession at 6 and 10 WAS. The number of leaves per plant, green leaves, leaf area and forage yield at 91, 105 and 119 days after sowing (DAS) were not significant (P > 0.05) in the two accessions of maize, but leaf area and LAI were significantly (P < 0.05) higher in WASA1 accession.. The percentage dry-matter (DM) content was significantly (P < 0.05) lower in WASA1, although leaf, and stem ratios were significantly (P < 0.01) higher at various stages of harvest. The crude protein (CP) and nitrogen free-extract (NFE) were significantly (P < 0.01) higher in WASA1 accession while crude fibre (CF) was significantly (P < 0.01) higher in SHIMAZ. The proximate components (ash, EE and CP) and NDF were significantly (P < 0.01) higher in WASA1 silage, but NFE and ADF were higher (P < 0.05) in SHIMAZ accession.

scholarly journals Comparative Evaluation of the Influence of Organic and Inorganic Fertilizers on Growth Performance of Tetrapleura tetraptera

2020 ◽  
pp. 1-9
Author(s):  
U. L. Edem ◽  
E. E. Ekerette
Keyword(s):  
Leaf Area ◽  
Seedling Growth ◽  
Seedling Emergence ◽  
Leaf Length ◽  
Internode Length ◽  
Stem Diameter ◽  
Cross River ◽  
Tetrapleura Tetraptera ◽  
Chicken Litter ◽  
Number Of Leaves

The continuous destruction of our rainforest has threatened the existence of many useful and multipurpose plant species such as Tetrapleura tetraptera. To revert this situation, efforts must be made towards its sustainable use by encouraging reforestation which entails raising of seedlings for mass propagation of this crop. This study was aimed at comparing the effects of organic (chicken litter) and inorganic (NPK 15:15:15) fertilizers on seedling growth in four accessions of Tetrapleura tetraptera and hence determining fertilizer preference for this forest species. The Complete Randomized Design (CRD) was used in a factorial arrangement with four accessions and three fertilizer types in eight replicates. One month after transplanting, the fertilizers (organic and inorganic) were uniformly applied at the rate of 45 kg/hectare according to the experimental design. Data were collected monthly for a period of three months on plant height, stem diameter, leaf area, leaf length, member of branches, number of leaves, primary and secondary internode length per plant. Data on seedling emergence were also taken. Data collected were subjected to a two-way analysis of variance. Least significant difference (LSD) was used to separate significant means at p = 0.05. Result obtained revealed that the soil was rich in calcium, phosphorus and organic matter but low in nitrogen and potassium which were adequately complemented in mean days to seedling emergence in four accessions studied. Our findings also revealed that the organic (chicken litter) fertilizer did better (P<0.05) in all accessions than inorganic (NPK 15:15:15) fertilizer for all morphological traits studied. The performance of Cross River accession was outstanding as illustrated by the significant interaction obtained in most parameters. With chicken, litter fertilizer, Cross River accession produced the tallest plant (27.38 cm), largest leaf area (1.99 cm2), highest number of branches (20.13), highest number of leaves (66.75), longest stem diameter (0.93 cm), longest leaf length (1.94 cm), lowest primary (0.80) and lowest secondary (0.83) internode length. The use of organic fertilizers is therefore recommended for improved seedling growth of Tetrapleura tetraptera.

scholarly journals PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG PROLIFIK PADA BERBAGAI JARAK TANAM DALAM BARIS DENGAN SISTEM TANAM JAJAR LEGOWO

2020 ◽  
Vol 4 (1) ◽  
pp. 13-23
Author(s):  
Intan Dwi Lestari
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Stem Diameter ◽  
Growth And Yield ◽  
Area Index ◽  
Plant Weight ◽  
South Sulawesi ◽  
Randomized Block Design ◽  
Number Of Leaves

This research aimed to determine the effect of spacing on the growth and yield of corn. It was conducted from July to November 2019 at the Experimental Plantation of Cereal Crops Research Institute (BalitSereal), Maros, South Sulawesi. The experimental method used was a randomized block design consisting of 4 treatments: J1= (100 cm x 50 cm) x 20 cm, one seed per hole; J2= (100 cm x 50 cm) x 30 cm, alternating between one seed per hole and two seeds per hole; J3= (100 cm x 50 cm) x 40 cm, two seeds per hole; J4= (100 cm x 50 cm) x 15 cm, one seed per hole. The observed variables were plant height, number of leaves, stem diameter, leaf area index, Anthesis Silking Interval (ASI), length of cob 1 and cob 2, diameter of cob 1 and cob 2, weight of shelled seeds/plant, weight of 100 seeds on cob 1 and cob 2, and production of shelled seeds/hectare. The experimental results showed that plant spacing affected the growth and production of maize. The J3 spacing (100 cm x 50 cm) x 40 cm with two seeds per hole significantly affected the leaf area index and gave the highest average stem diameter. The J2 spacing with (100 cm x 50 cm) x 30 cm with alternating between one seed per hole and two seeds per hole produced the highest production in terms of weight of shelled seeds/plant, weight of 100 seeds and yield of shelled seeds/hectare.

scholarly journals Validation of Leaf Area Index Measurement System Based on Wireless Sensor Network

2021 ◽  
Author(s):  
Rongjin Yang ◽  
Lu Liu ◽  
Qiang Liu ◽  
Xiuhong Li ◽  
Lizeyan Yin ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Wireless Sensor Network ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Sensor Network ◽  
Measurement System ◽  
Wireless Sensor ◽  
Area Index ◽  
The Real ◽  
Real Value

Abstract Accurate measurement of leaf area index (LAI) is important for agricultural analysis such as the estimation of crop yield, which makes its measurement work important. There are mainly two ways to obtain LAI: ground station measurement and remote sensing satellite monitoring. Recently, reliable progress has been made in long-term automatic LAI observation using wireless sensor network (WSN) technology under certain conditions. We developed and designed an LAI measurement system (LAIS) based on a wireless sensor network to select and improve the appropriate algorithm according to the image collected by the sensor, to get a more realistic leaf area index. The corn LAI was continuously observed from May 30 to July 16, 2015. Research on hardware has been published, this paper focuses on improved system algorithm and data verification. By improving the finite length average algorithm, the data validation results are as follows: 1. The slope of the fitting line between LAIS measurement data and the real value is 0.944, and the root means square error (RMSE) is 0.264 (absolute error ~ 0-0.6), which has high consistency with the real value. 2. The measurement error of LAIS is less than LAI2000, although the result of our measurement method will be higher than the actual value, it is due to the influence of weeds on the ground. 3. LAIS data can be used to support the retrieval of remote sensing products. We find a suitable application situation of our LAIS system data, and get our application value as ground monitoring data by the verification with remote sensing product data, which supports its application and promotion in similar research in the future.

scholarly journals Effect of Pre-germination seed treatments on germination of seeds and initial growth of Mango (Mangifera indica L)

2020 ◽  
Vol 6 (2) ◽  
pp. 60-67
Author(s):  
Sumaila SHU-AIB JAKPA ◽  
George NYARKO ◽  
Kodzo Hamenya KEGLO
Keyword(s):  
Mangifera Indica ◽  
Block Design ◽  
Germination Percentage ◽  
Leaf Length ◽  
Stem Diameter ◽  
Initial Growth ◽  
Seed Treatments ◽  
Number Of Leaves ◽  
Seed Coats ◽  
Better Than

An experiment was conducted to find out the effects of some pre-germination seed treatments on germination of mango (Mangifera indica L.) seeds and initial growth of mango. Seeds obtained from a local mango variety at Nyankpala were sown in polyethylene bags filled with topsoil for the experiment. The four treatments used were; seeds sown without seed coats (SW), seeds without seed coats soaked in cool water of 5ºC for 12 hours before sowing (SSC), seeds without seed coats soaked in warm water of 15ºC for one minute before sowing (SSW) and seeds with seed coats sown to serve as the control (SC). Randomized Complete Block Design was used and each treatment was replicated three times. The parameters measured were germination percentage, height of seedlings, leaf length of seedlings, number of leaves and stem diameter of seedlings. Data obtained were analyzed using Analysis of Variance and the differences were determined by using Tukey-Kramer multiple comparison test. All the treated seeds recorded more than 80% of germination three weeks after sowing, with SSW recording the highest value of 91%. In general, the treated seeds performed significantly (p < 0.05) better than the control for the parameters studied. SSW is recommended for adoption since it performed optimally better than the other treatments in terms of number of leaves (7.67), leaf length (14.71 cm), leaf width (4.41 cm), stem diameter (1.82 cm) and plant height 20.86 cm).

scholarly journals PENGAPLIKASIAN RADIASI ELEKTROMAGNETIK TERHADAP PERTUMBUHAN VEGETATIF TANAMAN CABAI MERAH (Capsicum Annum L.)

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Bagus Santoso ◽  
Amarullah Amarullah ◽  
Dwi Santoso
Keyword(s):  
Electromagnetic Radiation ◽  
Plant Height ◽  
Block Design ◽  
Leaf Length ◽  
Stem Diameter ◽  
Capsicum Annum ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Screen House ◽  
Number Of Branches

ABSTRACT  Chili Plants (Capsicum annum L.) originating from the tropics and subtropicsAmericas, especially Colombia, South America, and continue to spread to Latin America. Evidence of chili cultivation was first discovered in Peru's historical siteand leftover seeds that are more than 5000 years old BC in a cave in Tehuacan, Mexico. The spread of chili to the whole world including countries in Asia, like Indonesia carried out by Spanish and Portuguese traders. The purpose of this study was to determine the effect of electromagnetic radiation on the growth and yield of red chilies in the city of Tarakan.This research was conducted from September 2018 to January 2019, at the screen house of the Faculty of Agriculture, Borneo Tarakan University. This study was prepared using factorial Randomized Block Design (RBD) with 5 treatments repeated 5 times. The factors studied were large electromagnetic radiation 56 microtesla with exposure time (P0) 0 minutes, (P1) 20 minutes, (P2) 40 minutes, (P3) 60 minutes, (P4) 80 minutes. Observation parameters; plant height, number of leaves, leaf length, leaf width, stem diameter and number of branches. Analysis of variance using variance ANOVA with a confidence level of 95% and if it is significantly different it will be continued with DMRT further testing.The results of the study show that: 1) Observation parameters that showed statistically significant differences were parameters of plant height, number of branches and number of leaves while parameters that did not show different results were parameters of leaf length, leaf width and stem diameter., 2) The best treatment for each observation parameter is P2 treatment (exposure to electromagnetic radiation for 40 minutes), and the lowest treatment is treatment P0 (without exposure to electromagnetic radiation). Suggestions from this study should be carried out further research on the use of electromagnetic radiation in the vegetative phase until the results of red chili plants (Capsicum annum L.)Keywords: chili, electromagnetics radiation, Randomized Block Design  ABSTRAK Tanaman cabai (Capsicum annum L.) berasal dari dunia tropika dan subtropika Benua Amerika, khususnya  Colombia, Amerika Selatan, dan terus menyebar ke Amerika Latin. Bukti budidaya cabai pertama kali ditemukan dalam tapak galian sejarah Peru dan sisaan biji yang telah berumur lebih dari 5000 tahun SM di dalam gua di Tehuacan, Meksiko. Penyebaran cabai ke seluruh dunia termasuk negara-negara di Asia, seperti Indonesia dilakukan oleh pedagang Spanyol dan Portugis. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh radiasi elektromagnetik terhadap pertumbuhan dan hasil tanaman cabai merah di kota Tarakan. Penelitian ini dilaksanakan pada tahun 2018, di screen house Fakultas Pertanian Universitas Borneo Tarakan. Penelitian ini disusun dengan menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 5 perlakuan diulang sebanyak 5 kali. Faktor yang diteliti yaitu besar radiasi elektromagnetik 56 mikrotesla dengan lama pemaparan (P0) 0 menit, (P1) 20 menit, (P2) 40 menit, (P3) 60 menit, (P4) 80 menit. Parameter pengamatan; tinggi tanaman, jumlah daun, panjang daun, lebar daun, diameter batang dan jumlah cabang. Analisis ragam menggunakan sidik ragam Anova dengan tingkat kepercayaan 95% dan apabila berbeda nyata maka akan dilanjut dengan uji lanjut DMRT. Hasil penelitian menunjukkan bahwa: 1) Parameter pengamatan yang menunjukkan hasil berbeda nyata secara statistik adalah parameter tinggi tanaman, jumlah cabang dan jumlah daun sedangkan parameter yang tidak menunjukkan hasil yang berbeda nayata adalah parameter panjang daun, lebar daun dan diameter batang, 2) Perlakuan terbaik untuk setiap parameter pengamatan adalah perlakuan P2 (pemaparan radiasi elektromagnetik selama 40 menit), dan perlakuan terendah adalah perlakuan P0 (tanpa pemaparan radiasi elektromagnetik). Saran dari penelitian ini sebaiknya dilakukan penelitian lanjutan mengenai penggunaan radiasi elektromagnetik pada fase vegetatif sampai hasil tanaman cabai merah (Capsicum annum L.)Kata kunci : cabai merah, radiasi elektromagnetik, Rancangan Acak Kelompok

scholarly journals Evaluation of Different Organic Fertilizers in the Sustainable Cultive of Coriander

2019 ◽  
Vol 11 (6) ◽  
pp. 299
Author(s):  
Rafael Santiago da Costa ◽  
Letícia Kenia Bessa de Oliveira ◽  
José Lucas Guedes dos Santos ◽  
Aiala Vieira Amorim ◽  
Jorge Cá ◽  
...  
Keyword(s):  
Block Design ◽  
Leaf Length ◽  
Point Of View ◽  
Stem Diameter ◽  
Organic Fertilizers ◽  
Size Number ◽  
Randomized Complete Block Design ◽  
Different Types ◽  
Number Of Leaves ◽  
Root Size

The excessive use of agrochemicals in agriculture has been causing irreversible environmental impacts, from this point of view, organic farming appears as an economically viable alternative to minimize these impacts. So, the objective of this work was to evaluate the effect of different types organic fertilizers in the development and production of coriander harvested at different epochs. The experiment was conducted during the period from August to October 2016, in an area of the experimental farm of University of International Integration of Afro-Brazilian Lusophony. The experimental design was a randomized complete block design, in a 5 &times; 4 factorial scheme, consisting of five organic fertilizers and four harvesting epochs (28, 35, 42 and 49 days after planting-DAP) and five blocks. The variables stem diameter, plant height, root size, number of leaves, leaf length and productivity were evaluated. All the analyzed variables responded significantly by the F test, either for the qualitative factor, fertilizer sources, or the quantitative, epochs of evaluation. Regarding the cultivation epochs, when the first evaluation period (28 DAP) was compared with the last (49 DAP), it was verified that the variables presented linear responses over time, with increases of 34.4% for height , 29.5% for stem diameter, 37.07% for root length and 64.44% for production. In relation to the fertilizer sources, in general, the cattle manure provided a greater growth and production of the coriander plants, being therefore the most suitable for the cultivation.

scholarly journals Performance of New Superior Varieties of Hybrid and Composite Corn in Papua

2020 ◽  
Vol 8 (1) ◽  
pp. 111
Author(s):  
Fransiskus Palobo ◽  
Siska Tirajoh ◽  
Merlin K. Rumbarar ◽  
Muhammad Thamrin
Keyword(s):  
Plant Height ◽  
Leaf Length ◽  
Stem Diameter ◽  
Harvest Time ◽  
Corn Production ◽  
Hybrid Corn ◽  
Group Design ◽  
Number Of Leaves ◽  
Overall Performance

One effort to increase corn production is through the use of new superior varieties (NSV) hybrid corn and composite corn. This study aims to determine the performance of growth and yields of four NSV hybrid corn and composite corn. The study was conducted in Merauke Regency, Papua since August to December 2018. The design used was Randomized Group Design (RGD) based on one factorial with 5 sub factors, each hybrid corn; HJ 21 Nasa variety, Nasa 29 variety and composite corn; Lamuru variety, Bisma variety, Sukmaraga variety. The results of the study at various ages of plant height were not affected significantly, the number of leaves were significantly affected by 30 days after planting (DAP) and at harvest time. Leaves width at various ages had no significant effect, while leaves length and stem diameter were all observed at the highest leaf length with the effect of 30 days after planting (DAP) Nasa 29 (75 cm) but 60 days after planting (DAP) and at harvest HJ 21 Agritan 93 cm. Then the largest stem diameter of Nasa 29 (1.7 cm) was 30 days after planting (DAP) and 60 days after planting (DAP)- at harvest was each 2.5 cm. Difference of the longest cob length of HJ 21 agritan 38.4 cm, diameter of the largest cob 5.1 cm, the highest number of lines per cob 15.8 seeds, the heaviest weight of 1000 HJ 21 Agritan 420.6 g, heaviest dry harvest Nasa 29 (12.4 t/ha) and the heaviest dry pipelines Nasa 29 (9.2 t/ha). The overall performance of the results significantly affected both hybrid corn and composite corn.

scholarly journals Growth dynamics and morphogenesis of Trachypogon plumosus under soil fertility correction levels and regrowth ages

2013 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Newton De Lucena Costa ◽  
Anibal De Moraes ◽  
Paulo César Faccio de Carvalho ◽  
Alda Lúcia Gomes Monteiro ◽  
Antônio Carlos Vargas Motta ◽  
...  
Keyword(s):  
Growth Rate ◽  
Soil Fertility ◽  
Structural Characteristics ◽  
Growth Dynamics ◽  
Leaf Length ◽  
Forage Yield ◽  
Area Index ◽  
Average Growth ◽  
Appearance Rate ◽  
Leaf Appearance Rate

The effects of soil fertility correction levels (control, liming, fertilization and liming + fertilization) and regrowth ages (21, 28, 35, 42, 49, 56, 63, 70, 77 and 84 days) on growth dynamics, forage yield and morphogenetic and structural characteristics of Trachypogon plumosus were assessed in Roraima´s savannas. Dry matter yields (DMY), absolute growth rate (AGR), tiller population density (TPD), number of live leaves (NLL), final leaf length (FLL), leaf area index (LAI), leaf elongation rate (LER) and leaf senescence rate (LSR) increased consistently with regrowth age, while average growth rate (AvGR), and leaf appearance rate (LAR) were inversely proportional to regrowth age. The grass showed high responsiveness to the soil fertility improvement. Liming + fertilization or fertilization alone promoted higher DMY (2,116 and 1,759 kg ha-1), AGR (40.5 and 33.6 kg ha-1.day), AvGR (32.5 and 27.9 kg ha-1.day), NLL (5.5 and 4.9 leaf tiller-1), LAR (0.119 and 0.109 leaf day-1 tiller-1), LER (2.53 and 2.06 cm day-1 tiller-1), FLL (22.1 and 18.9 cm), LAI (2.64 and 2.83) and TPD (762 and 725 tillers m-2). To maximize the forage use efficiency and to prevent losses to leaves senescence, it is recommended a regrowth period between 56 to 63 days for fertilization and liming + fertilization, and 63 to 70 days for control or liming pastures.

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