scholarly journals Trinexapac-Ethyl Causes Stimulatory Effect on the Initial Growth of Eucalyptus urograndis Clones

2017 ◽  
Vol 9 (10) ◽  
pp. 189 ◽  
Author(s):  
Allan Lopes Bacha ◽  
Pedro de F. R. Barbosa Martins ◽  
Willians Cesar Carrega ◽  
Pedro Luis da C. A. Alves ◽  
Rinaldo Cesar de Paula
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Block Design ◽  
Stress Factors ◽  
Initial Growth ◽  
Randomized Complete Block Design ◽  
Positive Effect ◽  
Eucalyptus Urograndis

Eucalyptus plants are sensitive to stress factors in the initial growth phase. The plant growth regulator trinexapac-ethyl can provide gains to eucalyptus plants, a phenomenon known as hormesis. Thus, the aim of this work was to evaluate the effect of trinexapac-ethyl on the initial growth of two Eucalyptus urograndis clones (Clone 1 = I-144 and Clone 2 = 1407). The experiment was performed during 90 days after planting (DAP) of eucalyptus, in 100 L pots, with a randomized complete block design. The treatments were arranged in a 2 × 3 factorial scheme, with two eucalyptus clones and three trinexapac-ethyl doses (0, 30 and 60 g i.a. ha-1), with four replications. Fortnightly, plants height and stem diameter were evaluated. At 90 DAP, the leaf area and plants dry matter (DM) were evaluated. Clone 1 obtained leaf area and total DM 53% and 58% larger than Clone 2, respectively. The higher dose of trinexapac-ethyl provided mean gains of 30% in stem DM and total DM in Clone 1. For Clone 2, both doses of the product caused mean gains of 70% in stem DM, leaf DM and total DM. In conclusion, trinexapac-ethyl has a positive effect on the initial growth of E. urograndis, Clones I-144 and 1407. Clone I-144 showed higher growth than Clone 1407, regardless trinexapac-ethyl application. However, the Clone 1407 obtained more expressive gains with the application of trinexapac-ethyl, compared to Clone I-144.

scholarly journals EFFECT OF TRINEXAPAC-ETHYL ON GROWTH AND YIELD OF SUGARCANE

2015 ◽  
Vol 33 (3) ◽  
pp. 491-497
Author(s):  
A. T. FARIA ◽  
E. A. FERREIRA ◽  
P. R. R. ROCHA ◽  
D. V. SILVA ◽  
A. A. SILVA ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Growth And Yield ◽  
Bud Burst ◽  
Root Volume ◽  
Factor B ◽  
Randomized Complete Block Design ◽  
Sugarcane Yield

ABSTRACT Growth regulators can be used to further retard or inhibit vegetative growth. In this sense, the objective of this study was to determine the effects of age and number of trinexapac-ethyl applications on the growth and yield of sugarcane. The experiment was in a randomized complete block design with four replications. The treatments were in a 3 x 2 + 2 factorial arrangement, where factor A corresponded to the application times of the plant growth regulator (120, 200 and 240 days after bud burst (DAB) of sugarcane) and factor B to the number of applications (one or two applications). In addition, two controls (one with three applications and another application without the regulator) were added. The application of trinexapac-ethyl decreased the number and the distance between buds, height, root volume and sugarcane yield. The sequential application (2 or 3 times) induced an increase in stem diameter and three applications of the product increased the number of plant tillers. The use of growth regulators applied at 240 DAB has reduced plant height, however without changing the number of buds. It can be concluded that trinexapac-ethyl changes sugarcane growth and yield, regardless of season and number of applications.

scholarly journals Effect of biostimulants on dry matter accumulation and gas exchange in plantain plants (Musa AAB)

2019 ◽  
Vol 13 (2) ◽  
pp. 151-160
Author(s):  
Diana Mateus-Cagua ◽  
Gustavo Rodríguez-Yzquierdo
Keyword(s):  
Gas Exchange ◽  
Dry Matter ◽  
Photosynthetic Activity ◽  
Leaf Gas Exchange ◽  
Block Design ◽  
Dry Matter Accumulation ◽  
Vegetative Phase ◽  
Physiological Processes ◽  
Randomized Complete Block Design ◽  
Positive Effect

Biostimulants can potentially improve plant growth and development, modifying physiological processes. This study evaluated the effect of four biostimulants on the growth of ‘Hartón’ plantain plants and the leaf gas exchange during the vegetative phase. This experiment was developed on a plantain farm’s nursery in Fuente de Oro (Colombia) with a randomized complete block design with four replicates. The treatments were the biostimulants: Bactox WP®: Bacillus subtilis (Bs); Baliente®: Bacillus amyloliquefaciens (Ba); Tierra Diatomeas®: silicon dioxide (Si); Re-Leaf®: salicylic acid (SA) and the control (water). All products had a positive effect on the accumulation of total dry matter (DM) (between 58.4 and 21.9%) and on the photosynthetic activity (a maximum of 110 and 24.3% in first and second evaluation), as compared to the control, while no differences were found (P>0.05) for the foliar emission rate and chlorophyll content between the treatments. The plants treated with Bs had the greatest DM accumulation at the end of the study and a constant, high photosynthetic activity. All the while Bs, Ba and Si managed to stimulate greater early photosynthetic activity. According to the results, the use of these biostimulants during the vegetative phase had an effect on the physiological processes that enhance DM accumulation in plantain plants, which could be potentially useful for the transplanting stage and increase the reserves used during their establishment and development in the field.

scholarly journals EFFECTS OF MYCORRHIZAE, MEDIA AND CONTAINER TYPE ON THE GROWTH OF GREEN PEPPER AND LETTUCE TRANSPLANTS

HortScience ◽  
1991 ◽  
Vol 26 (6) ◽  
pp. 709B-709 ◽  
Author(s):  
Ray A. Watson ◽  
Katrine A. Stewart ◽  
Valentin Furlan
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Block Design ◽  
Dry Weight ◽  
The Other ◽  
Fresh Weight ◽  
Green Pepper ◽  
Shoot Dry Weight ◽  
Randomized Complete Block Design ◽  
Container Type

The effects of two mycorrhizal species (Glomus versiforme and Glomus intraradix) and a control on the growth of green pepper, Capsicum annuum, and lettuce, Lactuca sativa, seedlings have been evaluated using four types of growing media (Peatwool, Fafard bulk mix. Cornell mix and a compost based mix) and two types of containers, Cell Packs (125 cc volume) and Pro-Trays (65 cc volume) for green pepper and Cell Packs (125 cc volume) and Plug Flats (33 cc volume) for lettuce. The experiments were split plot randomized Complete block design with 6 blocks (lettuce) and 4 blocks (pepper). Seeds were sown directly into the containers of mycorrhizal inoculated media. All treatments received the same fertilizer regime. Cell volume had no significant effects on green pepper fresh weight, dry weight, stem diameter, leaf area or leaf number but the lettuce Cell Pack plants had significantly higher fresh and dry weights, more leaves and higher leaf area. The Fafard Bulk and the Compost mix gave significantly higher fresh and dry weights than did the other two media for both green pepper and lettuce. Mycorrhizal species did not influence plant growth with the exception of leaf area in green peppers and shoot dry weight in lettuce.

scholarly journals Saline-sodic soil and organic matter addition in the cultivation of the colored cotton ‘BRS Topázio’

2016 ◽  
Vol 37 (2) ◽  
pp. 701
Author(s):  
Magaly Morgana Lopes da Costa ◽  
Reginaldo Gomes Nobre ◽  
Geovani Soares de Lima ◽  
Hans Raj Gheyi ◽  
Francisco Wesley Alves Pinheiro ◽  
...  
Keyword(s):  
Organic Matter ◽  
Leaf Area ◽  
Plant Height ◽  
Dry Matter ◽  
Block Design ◽  
Irrigation Management ◽  
Stem Diameter ◽  
Initial Growth ◽  
Exchangeable Sodium ◽  
Number Of Leaves

he prevailing climate of the semiarid region in the northeastern region of Brazil along with inadequate irrigation management, have caused the formation of halomorphic soils, which have hampered agricultural production and environmental sustainability of this region. Therefore, this study aimed to evaluate the emergence and initial growth of the cotton cultivar ‘BRS Topázio’ cultivated in soil with different levels of exchangeable sodium percentage (ESP) and concentrations of organic matter (OM) in a greenhouse from April to June 2014. The experiment was set in a randomized block design in a 5 × 4 factorial scheme, with three replicates, and the treatments consisted of five ESP levels (13.6, 22.4, 30.1, 39.0, and 48.0) and four OM concentrations (0, 5, 10, and 15% based on soil volume). Soils with an ESP ranging from 13.6 to 48.0 did not interfere with the emergence and number of leaves of cotton at 10 days after seeding (DAS). At 44 DAS, in the period preceding the flowering stage, ESPs ranging from 27 to 30 promoted greater plant height, stem diameter, and shoot fresh and dry matter. Increasing OM increased the emergence percentage and emergence speed index and, at 44 DAS, increased plant height, stem diameter, and shoot fresh and dry matter. Increasing OM mitigated the effect of the exchangeable sodium up to an ESP of 30 on the number of leaves, plant height, stem diameter, and leaf area at 10 DAS, and up to mean ESPs of 28.5 and 34.0 for the number of leaves and leaf area, respectively, at 44 DAS.

scholarly journals Diallel Analysis of Quality and Yield Contributing Traits of Pumpkin (Cucurbita moschata Duch. ex Poir.)

2016 ◽  
Vol 14 (1) ◽  
pp. 15-32 ◽  
Author(s):  
M S Rana ◽  
M G Rasu ◽  
A K M A Islam ◽  
M M Hossain
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Diallel Analysis ◽  
Reducing Sugar ◽  
F1 Hybrids ◽  
Graph Analysis ◽  
Cucurbita Moschata ◽  
Randomized Complete Block Design ◽  
Allelic Interaction ◽  
Positive Effect

A 5 X 5 diallel analysis was carried out according to Hayman on quality and yield contributing traits of pumpkin. Five (5) advanced inbreds of pumpkin viz IB 23, IB 40, IB 47, IB 50 and IB 57 were used in this study. The five parents and their F1 hybrids were arranged in a randomized complete block design with three replications for studying the quality and yield contributing traits. Analysis of variance showed significant differences among genotypes for all of the traits except dry matter and fruit yield. Parental mean suggested that all the parents contained recessive alleles with positive effect. In the 5 × 5 diallel set, Wr-Vr graph analysis revealed the presence of allelic interaction in all the character’s except fruit length, dry matter, brix percentage and reducing sugar where non-allelic interaction was present.The Agriculturists 2016; 14(1) 15-32

scholarly journals Pengaruh Pemberian Berbagai Zat Pengatur Tumbuh Alami terhadap Pertumbuhan Stek Kopi

2017 ◽  
Vol 8 (1) ◽  
pp. 46
Author(s):  
Isna Tustiyani
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Coconut Water ◽  
Natural Plant ◽  
Onion Extract ◽  
Randomized Complete Block Design

Kopi merupakan salah satu komoditas perkebunan unggulan nasional. Pembibitan kopi umumnya melalui biji, padahal kopi dapat dibudidayakan melalui cara vegetative yaitu stek asal diberi perlakuan at pengatur tumbuh. Tujuan penelitian  ini adalah untuk  mempelajari pengaruh pemberian berbagai zat pengatur tumbuh alami pada stek kopi. Percobaan dilaksanakan di Kebun Percobaan  Fakultas Pertanian, Universitas Garut pada Oktober – November 2016 menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan tanpa pemberian ZPT, growtone, ekstrak bawang merah, dan air kelapa. Hasil percobaan dapat disimpulkan bahwa pemberian ekstrak bawang merah dapat menumbuhkan sebesar 50% dan penggunaan growtone sebesar 55% stek kopi hidup.KATA KUNCI: auksin, air kelapa, ekstrak bawang merah,  stek kopi  THE EFFECT OF VARIOUS NATURAL PLANT GROWTH REGULATOR ON GROWTH CUTTINGS OF COFFEEABSTRACTThe Coffee is one of national excellent commodities. The Nurseries of coffee generally through the beans, but it can be grown through vegetative through by cuttings treated with growth regulators. The purpose of this research was to study the effect of various naturally plant growth regulators in coffee cuttings. The experiment was conducted at the Experimental Farm, Faculty of Agriculture, University of Garut in October-November, 2016 using Randomized Complete Block Design with treatment  without giving plant growth regulator, growtone, onion extract, and coconut water. The result showed  that the extract of onion can grow at 50% and the growtone treatments  can grow 55% of the coffee cuttings. 

scholarly journals Plant Growth Regulator-Brassinolide for Mitigating Field Waterlogging Stress on Maize

2019 ◽  
pp. 1-14
Author(s):  
Victoria Otie ◽  
AN Ping ◽  
Ali Ibrahim ◽  
Egrinya Eneji
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Radiation Absorption ◽  
Waterlogging Stress ◽  
Maize Varieties ◽  
Maize Plants

Aim: To assess the pleiotropic role of a plant growth regulator, commercially identified as brassinolide (BR) in mitigating waterlogging stress imposed on maize. Study Design: A factorial combination of two maize varieties [Ikom White (IKW) and Oba-98], two BR levels (0 and 250 ml) and two waterlogging stages of maize growth [control (WL0) and seedling stage (WL1)], arranged as a split-split plot in a randomized complete block design with three replications was used. Place and Duration of Study: Akpabuyo Local Government Area, Cross River State-Nigeria. A two-year field experiment was conducted during the dry seasons of December 2016 and December 2017. Methodology: Waterlogging test was conducted on plots by demarcating them with 3.6 by 1.7 m metal sheets buried to a depth of 60 cm to prevent lateral soil-water movement. Two maize seeds were sown at 25 cm within and 75 cm between rows. The BR (250 ml) was sprayed foliar at 21 DAS. The non-waterlogging plots served as control. Observations were made on growth and yield variables as well as the plant's physiological traits. Results: Waterlogging significantly reduced the growth attributes of maize and increased (p≤0.05) the leaf moisture content. The photosynthetically active radiation on maize plants was substantially reduced (p≤0.05) by the waterlogging stress. Dry matter yield (DMY) and nutrient uptake in the leaves, stems and grains were reduced (p≤0.05) at both silking and at harvest. The effect of the BR was greater in Oba-98 with higher nutrient contents, radiation absorption, dry matter and grain yields than IKW. Conclusion: Treatment of maize plants with BR could induce some tolerance of field waterlogging. Thus, for optimum efficiency in maize production under stressed soil condition of waterlogging, it is recommended that the foliar spray of BR at the 250 ml per plant rate be considered.

scholarly journals Perbaikan keragaan bibit jeruk pamelo tanpa biji dengan strangulasi dan aplikasi beberapa dosis dari dua ZPT BAP dan 2,4-D

Kultivasi ◽  
2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Wahyu Fikrinda ◽  
I Made Indra Agastya
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Growth Regulator ◽  
Vegetative Growth ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Canopy Architecture ◽  
Randomized Block Design ◽  
The Wire ◽  
Number Of Branches

Sari Pamelo memiliki prospek yang baik untuk dikembangkan karena buahnya berukuran besar dan memiliki rasa yang segar. Tujuan penelitian ini adalah mempelajari aplikasi strangulasi dan ZPT terbaik dalam merangsang pertumbuhan vegetatif untuk perbaikan keragaan bibit pamelo tanpa biji. Percobaan dilaksanakan pada bulan Maret sampai Juli 2018 di rumah plastik, Laboratorium Agroteknologi, dan Laboratorium Biologi UNITRI, Malang. Rancangan Acak Kelompok (RAK) faktorial dengan dua faktor digunakan pada penelitian ini. Faktor pertama adalah strangulasi ganda dengan jarak antar kawat yang berbeda yaitu 10 cm, dan 15 cm, sedangkan faktor kedua adalah dosis dan jenis zat pengatur tumbuh yang berbeda yaitu tanpa ZPT, BAP 100 ppm, BAP 200 ppm, 2,4-D 100 ppm, dan 2,4-D 400 ppm. Aplikasi strangulasi (pengikatan kawat) dilakukan secara serentak pada bibit pamelo pada April 2018 dan pelepasan kawat dilakukan pada Juni 2018. Berdasarkan analisis ragam yang dilakukan terdapat interaksi antara perlakuan letak strangulasi dengan dosis ZPT pada parameter diameter batang, jumlah tunas, panjang tunas, jumlah daun, luas daun, dan ukuran tajuk pada 1 – 17 minggu setelah perlakuan (MSP). Perlakuan strangulasi ganda 15 cm dan BAP 100 ppm (j2b1) merupakan perlakuan terbaik mampu membentuk tajuk terbuka dengan arsitektur kanopi yang baik sehingga cahaya dapat masuk karena memiliki ukuran tajuk yang paling besar, jumlah daun, luas daun, serta jumlah tunas yang paling banyak dibandingkan dengan perlakuan lainnya sampai 17 MSP. Kata Kunci: arsitektur kanopi, BAP, 2,4-D, pamelo tanpa biji Abstract. Pummelo has prospective to be developed because of its large fruits and fresh taste. The aim of the research was to study the influence of double strangulation and two plant growth regulator to increase vegetative growth and improve performance of Pummelo (Citrus maxima (Brum.) Merr.) seedling. The research was conducted from March to Juli 2018 at plastic house, Laboratory of Agrotechnology, and Laboratory of Biology, Unitri, Malang. Experimental design used completely randomized block design and treatment design was factorial. The first factor was double strangulation with different distance, i.e. 10 cm  and 15 cm, while the second factor was the different dosage and type of growth regulators, i.e. without plant growth regulator, 100 ppm BAP, 200 ppm BAP, 2.4-D 100 ppm, and 2.4-D 200 ppm. Strangulation treatment was conducted on April 8 and wire removed on June 3, 2018. The results showed that there were interaction between the location of strangulation and the dose of plant growth regulator on the parameters diameter of stem, number of branches, length of branches, number of leaves, leaf area, and volume of canopy at 1 - 17 weeks after treatment (WAT). Furthermore, the result showed double strangulation with distance between the wire 15 cm had better significant influence on vegetative growth than double strangulation and the distance between the wire 10 cm. Double strangulation and the distance between the wire 15 cm with BAP 100 ppm treatment was the best treatment on canopy architecture so the light can be used optimally by plant. It was showed by the largest volume of canopy, number of leaf, and leaf area. Besides, the number of branches was the highest if compared to other treatments up to 17 WAT.Keywords: canopy architecture, BAP, 2,4-D, seedless pummelo

scholarly journals Effect of Different Combinations of Nutrient Sources and Weeding Practice on the Physiological Characters of Rapeseed in Humid Subtropical Condition of Chitwan

2005 ◽  
Vol 26 ◽  
pp. 51-55 ◽  
Author(s):  
KB Basnet
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Management Practices ◽  
Block Design ◽  
Winter Season ◽  
Npk Fertilizers ◽  
Nutrient Sources ◽  
Agronomic Management ◽  
Randomized Complete Block Design ◽  
Physiological Characters

A field experiment was conducted during the winter season of 2001-2002 at Mangalpur, Chitwan, Nepal to evaluate the performance of rapeseed in different agronomic management practices. The experiment was conducted with 16 treatments in a randomized complete block design (RCBD) with three replications. The treatments included control without input and four agronomic inputs (NPK, FYM, micronutrient- Zn, B and S and weeding), six and four combinations of two and three inputs respectively and a full package with all inputs. Application of NPK fertilizers increased leaf area and total dry matter per plant significantly as compared to control and weeding practice at 55 and 40 DAS, respectively. Further, in two factor combinations, significantly higher leaf area and particularly total dry matter per plant was produced by the application of NPK fertilizers with FYM at all stages (25 to 85 DAS) of growth and development. Finally, exclusion of NPK fertilizers in the combination of three agronomic inputs significantly lowered leaf area and total dry matter per plant as compared to others which included it at 40 and 70 DAS. All above mentioned trends were reflected on rapeseed yield indicating its significant correlation with leaf area (r=0.971) and total dry matter per plant (r=0.976). In general, addition of NPK fertilizers to other combinations of agronomic inputs increased leaf area and total dry matter per plant significantly. Key words: Leaf area, dry matter, agronomic inputs, yield J. Inst. Agric. Anim. Sci. 26:51-55 (2005)

scholarly journals Seed Yield and Quality of Late Season Jute (Corchorus olitorius L.) Seed as Influenced by Plant Growth Regulators

2018 ◽  
Vol 15 (2) ◽  
pp. 115-121
Author(s):  
M A F Mollah ◽  
M H K Rubel ◽  
I M Hasan ◽  
A Sultana ◽  
M Z Tareq
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Seed Yield ◽  
Growth Regulators ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Brand Names ◽  
Yield And Quality ◽  
Randomized Complete Block Design

An experiment was conducted at Jute Research Regional Station (JRRS) of Bangladesh Jute Research Institute (BJRI), Kishoreganj during August 2009 to January 2010 to determine the effect of different plant growth regulators on seed yield and quality of olitorius jute using late jute seed production technique. The experiment was laid out in a randomized complete block design (RCBD) with four replications. Seven growth regulators with different brand names such as Bionik, Litosen, Okozim, Mirakulan, Planovit, Flora and Yield were used in the experiment. All the yield contributing characters increased due to the application of growth regulators over the control. The highest seed yield (2.91g/plant) was obtained with Bionik which was followed by Mirakulan> Okozim> Litosen> Planovit> Yield> Flora> control. The highest of 33.49% seed yield was found in Bionik over control.  In terms of quality of seeds, the plant growth regulator `Bionik’ performed the best.The Agriculturists 2017; 15(2) 115-121

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