scholarly journals Use of growth retardants in wheat

2009 ◽  
Vol 27 (2) ◽  
pp. 379-387 ◽  
Author(s):  
M.C. Espindula ◽  
V.S. Rocha ◽  
J.A.S. Grossi ◽  
M.A. Souza ◽  
L.T. Souza ◽  
...  
Keyword(s):  
Plant Height ◽  
Growth Stage ◽  
Block Design ◽  
Wheat Yield ◽  
Fertilizer Application ◽  
Growth Retardant ◽  
Control Treatment ◽  
Growth Stages ◽  
Growth Retardants ◽  
Randomized Block Design

In general, lodging has been controlled by restricting nitrogen fertilizer application and/or using short cultivars. Growth retardants can also be used to solve this problem.The objective of this study was to evaluate the effect of rates and application times of three growth retardants on Pioneiro wheat cultivar. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in a randomized block design with four replications and a control treatment. The treatments consisted of 500, 1,000 and 1,500 g ha-1 of chlormequat; 62.5, 125 and 187.5 g ha-1 of trinexapac-ethyl and 40, 80 and 120 g ha-1 of paclobutrazol applied at growth stages 6 or 8, growth stage used on the scale of Feeks and Large, and a control treatment without growth retardant application. Only trinexapac-ethyl and chlormequat were efficient in reducing plant height; the effect of chlormequat and paclobutrazol on plant height was independent of the application time, but the trinexapac-ethyl at growth stage 8 produced shorter plant height than at stage 6. Increasing growth retardant rates produced shorter plant heights; chlormequat and paclobutrazol did not affect grain yield. However, the highest trinexapac-ethyl rates reduced wheat yield.

scholarly journals Growth retardants in wheat and its effect in physiological quality of seeds

2010 ◽  
Vol 40 (6) ◽  
pp. 1431-1434 ◽  
Author(s):  
Leandro Torres de Souza ◽  
Marcelo Curitiba Espíndula ◽  
Valterley Soares Rocha ◽  
Denise Cunha Fernandes dos Santos Dias ◽  
Moacil Alves de Souza
Keyword(s):  
Block Design ◽  
Growth Retardant ◽  
Control Treatment ◽  
Growth Retardants ◽  
Lack Of Information ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Wheat Seeds ◽  
Hierarchical Scheme

Plant lodging in wheat has been controlled through growth retardants. However, there is lack of information on the effect of these products on the physiological quality of seeds. The objective of this study was to evaluate the physiological quality of wheat seeds obtained under different rates and application times of three growth retardants. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in randomized block design with four replications and a control treatment. The treatments consisted of 500, 1000 and 1500g ha-1 of chlormequat; 40, 80 and 120g ha-1 of paclobutrazol and 62.5, 125 and 187.5g ha-1 of trinexapac-ethyl applied at the 6 or 8 growth stage based on the scale of Feeks and Large, and a control treatment without growth retardant application. Leaf application of growth retardants as chlormequat, paclobutrazol and trinexapac-ethyl did not affect the germination and vigor of wheat seeds.

scholarly journals Respons Pertumbuhan dan Rendemen Minyak Klon Nilam (Pogostemon cablin Benth) terhadap Aplikasi Berbagai Dosis Urea (Growth Response And Yield Of Patchouli Clones (Pogostemon Cablin Benth) On Dose Urea Various Applications)

2020 ◽  
pp. 109-119
Author(s):  
Retno Ayu Diah Pangestu ◽  
M. Tahir ◽  
Fatahillah Fatahillah
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Optimal Dose ◽  
Fertilizer Application ◽  
Control Treatment ◽  
Randomized Block Design ◽  
Best Response ◽  
Pogostemon Cablin ◽  
Wet Weight ◽  
The Right

Patchouli (Pogostemon cablin Benth) is a plant that produces essential oils and important foreign exchange earner for Indonesia. Using superior clones  with the right fertilizer application will increase the yield of patchouli oil. The research aims to obtain patchouli plants that have the best response of urea fertilization application and optimum dosage of urea for patchouli plant growth. The study was conducted at the Politeknik Negeri lampung’s teaching farm in December 2018 until May 2019. The experiment was conducted using a factorial randomized block design (RBD), consisting of two treatment factors, namely the type of urea clone. The first factor is the type of clone consisting of 2 levels, namely NPL 9 clone and Lhokseumawe clone. The second factor is the treatment of urea doses consisting of 4 levels, namely control, 250 kg.ha-1, 300 kg.ha-1, and 350 kg.ha-1. Variables observed included plant’s height, bough, diameter, number of leaves, stalk angle, chlorophyll content, wet weight of plant, wind dry weight of plant, and yield. The results of research showed  NPL 9 clone had a superior appearance and 350 kg.ha-1 of urea dose  was the optimal dose compared to other doses and could increase patchouli yield 2,3% compared to the control treatment.

scholarly journals Effects of 3,4-dimethylphyrazole phosphate-added nitrogen fertilizers on crop growth and N2O emissions in Southern Italy

2013 ◽  
Vol 59 (No. 11) ◽  
pp. 517-523 ◽  
Author(s):  
L. Vitale ◽  
L. Ottaiano ◽  
F. Polimeno ◽  
G. Maglione ◽  
U. Amato ◽  
...  
Keyword(s):  
Southern Italy ◽  
Pore Space ◽  
Block Design ◽  
Nitrification Inhibitor ◽  
Fertilizer Application ◽  
Crop Growth ◽  
Nitrogen Fertilizers ◽  
Control Treatment ◽  
Soil N ◽  
Randomized Block Design

The effect of the nitrification inhibitor 3,4-dimethylphyrazole phosphate (DMPP) on N-fertilized crop growth and soil N<sub>2</sub>O emissions were studied at two experimental sites in Southern Italy, characterised by a Mediterranean climate and different soil texture. The experiments were a randomized block design of two treatments: crop fertilized with NH<sub>4</sub>NO<sub>3</sub> (considered the control treatment) or amended with DMPP plus NH<sub>4</sub>NO<sub>3</sub> (considered the DMPP treatment). ANOVA was performed to assess differences between treatments and fertilization periods whereas simple and multiple linear regressions were performed in order to assess the effect of the soil-related in-dependent variables on soil gases emissions. Growth of potato plants fertilized with DMPP-added nitrogen was enhanced compared to control plants, whereas no benefit on maize plants grown during summer was observed. N<sub>2</sub>O emissions measured from soil to potato after the first fertilization with DMPP-added nitrogen was reduced during winter, but was higher than control after the second fertilizer application in spring, leading to comparable N<sub>2</sub>O emission factors (EF1) between treatments. In maize N<sub>2</sub>O emissions and EF1 were lower for DMPP compared to control treatment. The effectiveness of reduction in soil N<sub>2</sub>O emission was influenced by soil temperature and water-filled pore space (WFPS) in both experimental sites. However, the overall effect of WFPS was contrasting as N<sub>2</sub>O emissions were decreased in potato and enhanced in maize.

scholarly journals Performance of white oat cultivars in response to nitrogen fertilization and trinexapac-ethyl

2019 ◽  
Vol 40 (5Supl1) ◽  
pp. 2121
Author(s):  
José Henrique Bizzarri Bazzo ◽  
Carlos Roberto Riede ◽  
Klever Márcio Antunes Arruda ◽  
Carolina Pereira Cardoso ◽  
Isabela Franzoni ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Growth Regulator ◽  
Unit Area ◽  
Block Design ◽  
N Fertilization ◽  
Growth Retardant ◽  
Growth Environment ◽  
Randomized Block Design ◽  
Oat Cultivars

The application of N at the appropriate time and dose can increase oat crop efficiency by increasing grain yield through changes in production components. High doses of N, depending on the genotype and the environment, can result in plant lodging, which can be addressed with the use of growth retardants. The aim of this study was to evaluate the yield components, lodging, and productivity of white oat cultivars cultivated at two planting locations under different N levels with trinexapac-ethyl growth retardant. Two assays (with and without the application of the growth retardant agent) were used in the experiments, which were set up in the region of Londrina and Mauá da Serra, Parana State, Brazil, in a randomized block design with split plots and four replications. The plots consisted of four white oat cultivars (IPR Afrodite, IPR Artemis, URS Corona, and URS Guria) and the subplots of four doses of N (0, 30, 60, and 90 kg ha-1). Plant height, number of panicles per unit area, number of grains per panicle, thousand grain weight, lodging of plants, and grain yield were evaluated. For the conditions under which the experiments were conducted, the growth regulator decreased plant height and lodging. Furthermore, the growth regulator in combination with N topdressing increased the number of panicles per unit area. Thus, the increase in grain yield with the application of a growth retardant was dependent on the characteristics of the plant growth environment. The response of genotypes to N fertilization was also dependent on the soil and climatic characteristics of the environment.

Pengaruh Pemberian dosis Pupuk P dan K Terhadap Pertumbuhan dan Produksi Bawang Merah (Allium ascalonicum L.) Varietas Bima

2018 ◽  
Vol 6 (2) ◽  
pp. 48
Author(s):  
Irwansyah Ardianto Sinaga ◽  
Mahdaena Mahdalena ◽  
Hamidah Hamidah
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Fertilizer Application ◽  
Factorial Experiment ◽  
Training Center ◽  
East Kalimantan ◽  
Randomized Block Design ◽  
K Fertilizer ◽  
P Fertilizer ◽  
Number Of Leaves

The Effect of Dosage of P and K Fertilizer on Growth and Production of Red Onion (Allium ascalonicum L.) Bima Varieties. The purpose of this research is to know the influence of P and K fertilizer application and the interaction of the two treatments on the growth and production of shallot plant. The study was conducted for 3 months, ie from July to October 2016. The research site on land owned by UPTB Samarinda Agriculture Training Center East Kalimantan Province. This study used Randomized Block Design (RBD)  with a 3 x 4 factorial experiment consisting of 4 replications. The first factor is fertilizer fertilizer P which consists of 3 levels: namely p0 (without fertilization), p1 (fertilization 1 gr / plant), p2 (Fertilization 1.5 g / plant). The second factor is the dosage of K fertilizer consisting of 4 levels ie k0 (without fertilization) k1 (0.5 g / plant) k2 (1 g / plant) and k3 (1.5 g / plant). The result of this research showed that the treatment of P (P) fertilizer had significant effect on plant height 2 and 3 MST, wet bulb weight and dry bulb weight and no significant effect on plant height of 4 MST, number of leaves, and number of tillers. While the application of K (K) fertilizer had significant effect on plant height and leaf number at age 2 MST and no significant effect on height and number of leaf aged 3 and 4 MST, number of tiller, wet bulb weight and dry bulb weight. There was no interaction between P and K fertilizer application.

scholarly journals Macronutrient accumulation and partioning in fertigated sweet pepper plants

2004 ◽  
Vol 61 (1) ◽  
pp. 62-68 ◽  
Author(s):  
Francisco Fernando Noronha Marcussi ◽  
Roberto Lyra Villas Bôas ◽  
Leandro José Grava de Godoy ◽  
Rumy Goto
Keyword(s):  
Growth Stage ◽  
Irrigation System ◽  
Block Design ◽  
Sweet Pepper ◽  
Growth Stages ◽  
Drip Irrigation System ◽  
Pet Bottles ◽  
Nutrient Demand ◽  
Randomized Block Design ◽  
Pepper Plants

Information on nutrient demand during each growth stage is essential for efficient application of nutrients. A pot experiment was carried out with a Typic Hapludox under greenhouse conditions in Botucatu, SP, Brazil, aiming was to determine nutrient uptake and partition of sweet pepper plants, cultivar Elisa in randomized block design with four replications. The fertigation was simulated through 2-L PET bottles (neck down with a tube and a flow regulator at the end, simulating a drip irrigation system). Four plants per replication were collected at eight growth stages (0, 20, 40, 60, 80, 100, 120 and 140 days after the seedling transplant - DAT). The period of largest extraction of nutrients for the plant occurred from 120 to 140 DAT, which coincides with the highest accumulation of dry phytomass. The highest Mg and Ca accumulation occurred in the leaves, while N, K, S and P were mostly accumulated in the fruits. Only 8 to 13% of the total amount of the accumulated macronutrientes at 140 DAT were absorbed up to the 60th DAT. Between the 61st and 100th DAT, K was the most absorbed macronutrient (60% of the macronutrients accumulated during the whole cycle). P, Ca and S were the most absorbed nutrients at the end of the cycle. Considering rates (g per plant), the most absorbed macronutrients were: N (6.6) > K (6.4) > Ca (2.6) > Mg (1.3) > S (1.1) > P (0.7).

scholarly journals The effect of biofilm biofertilizer formula and organic fertilizer dosage to phosphorus uptake and yield of shallot on Vertisols

2021 ◽  
Vol 905 (1) ◽  
pp. 012121
Author(s):  
Sudadi ◽  
C Y Setyawan
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Organic Fertilizer ◽  
Phosphorus Uptake ◽  
Dry Weight ◽  
P Uptake ◽  
Control Treatment ◽  
Randomized Block Design ◽  
Two Factors ◽  
Weight Data

Abstract The research aims to find the effect of biofilm biofertilizer formula and dose of organic fertilizer on phosphorus uptake and yield of shallot on Vertisols. The research was arranged in a completely randomized block design with two factors: dosage of organic fertilizer (0, 10, 20-ton ha-1) and the formula of biofilm biofertilizer (without BiO2, BiO2 1, BiO2 2, BiO2 3). Variables observed are available-P, P-uptake, bulb number, and bulb weight. Data were analyzed using F test followed by DMRT at α = 0.05. The result shows that 20-ton ha-1 organic fertilizer decomposed with biofilm biofertilizer yield highest P-uptake and plant dry weight which increases 322 and 216 % to control treatment (0.50 and 1.26 g plant-1). The use of 10-ton ha-1 of organic fertilizer yield highest bulb number and weight i.e 5.58 bulbs plant-1 and 116 g plant-1 increase 27 and 172% compared to the control. The BiO2 formula only affected to the plant height, and the use of formula 1 able to increase the plant height about 13.5% compared to control treatment.

scholarly journals Pengaruh Pemberian Pupuk Nutrisi Saputra dan Intervalnya Pemberiannya terhadap Pertumbuhan dan Hasil Tanaman Cabai Rawit (Capsicum frutencens L)

2017 ◽  
Vol 1 (1) ◽  
pp. 24
Author(s):  
Zainudin Zainudin
Keyword(s):  
Plant Height ◽  
Average Length ◽  
Block Design ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Average Yield ◽  
Fresh Weight ◽  
Land Preparation ◽  
East Kalimantan ◽  
Randomized Block Design

Effect of fertilizing manure nutrients saputra and intervals of administration on the growth and yield of cayenne pepper (Capsicum frutescens.L). The research objective was to determine the dose of fertilizer nutrients Saputra and intervals of administration on the growth and yield of cayenne pepper (Capsicum frutescen L). Research carried out for ± 4 months, from September to December 2010, starting from land preparation to harvest, in the district. Samarinda Ilir, Samarinda, East Kalimantan. Research using randomized block design (RBD), with a 4 x 3 factorial analysis composed with 3 replications, the main factor is the dose Fertilizer Nutrients Saputra, which consists of 4 levels, ie without fertilizers (p0), 6 ml plant-1 is equivalent to 120 plot ml -1 (p1), 12ml plant-1 plant is equivalent to 240 ml -1 (p2) -1 plant 18ml equivalent to 360ml of plant-1 (p3), 24 ml of plants equivalent to 480ml plant -1 -1 ,, factor The second is the interval Giving Fertilizer Nutrients saputra which consists of three levels ie 7 DAP (a1), 14 DAP (a2), 21 DAP (a3). The results showed that fertilizer nutrients Saputra very real impact on the average age of flowering 80%, the average number of productive branches, the average number of fruit crops, the average fresh weight and the average yield per hectare, as well as significantly affected the average length of the best fruits in the treatment of p3: 2.96 cm. Effect of fertilizer NS intervals showed significant effect on plant height at 15 days after planting and the number of productive branches. As well as highly significant to the average fresh weight and yield per hectare is the highest a3 treatment: 4.04 tonnes / ha. NS interaction effects of fertilizer application significantly affected the plant height at 15 DAP and highly significant to the weight of the fruit and the result per hectare. Average yield per hectare is the highest p3a3 treatment: 8.19 tonnes / ha.

scholarly journals Doses of bokashi in the growth of two basil cultivars

2021 ◽  
Vol 6 ◽  
pp. 1-9
Author(s):  
Roberto Takane ◽  
Cyro Fragoso Silva ◽  
Jessica Soares Pereira ◽  
Christian Morimasa Takemura ◽  
Talita Angélica ◽  
...  
Keyword(s):  
Plant Height ◽  
Vegetative Growth ◽  
Aerial Part ◽  
Block Design ◽  
Dry Mass ◽  
Ocimum Basilicum ◽  
Stem Diameter ◽  
Control Treatment ◽  
Organic Fertilization ◽  
Randomized Block Design

The present work aimed to evaluate the influence of use, as well as to determine adequate doses in organic fertilization of the bokashi type in the cultivation of two basil (Ocimum basilicum L.) cultivars. Seeds from the collection of the Floriculture Laboratory of the Phytotechnics Department of the Federal University of Ceará were used. The treatments used were arranged in a randomized block design (RBD), arranged in a 2x5 factorial scheme, consisting of two cultivars of basil (Genovese and Anão) and five doses of Bokashi, namely: 0, 3, 6, 9 and 18 g.L-1. Plants that received no dose (0 g.L-1) served as a control treatment. Each treatment contained 5 repetitions, with the plot consisting of 7 pots, one plant per pot, the useful unit a pot with a basil seedling. From the transplant, applications of bokashi were started in doses of 0, 3, 6, 9, and 18 g.L-1 in both cultivars. Both applications were performed every 20 days after the first application of Bokashi. Fivety five days after transplantation in the final pot, the following variables were analyzed: plant height, stem diameter, fresh and dry mass of the aerial part and the root. The 9 g.L-1 dose of Bokashi showed the best results for the variables analyzed for both cultivars, in addition to being efficient when compared to the control, in which the vegetative growth was incipient.

scholarly journals Yield Response of Upland Rice as Influenced by Enhanced-Efficiency Nitrogen Fertilizers in the Brazilian Cerrado

2020 ◽  
Vol 12 (11) ◽  
pp. 98
Author(s):  
Vinícius Almeida Oliveira ◽  
Eliana Paula Fernandes Brasil ◽  
Welldy Gonçalves Teixeira ◽  
Felipe Corrêa Veloso dos Santos ◽  
Atila Reis da Silva
Keyword(s):  
Upland Rice ◽  
Block Design ◽  
Fertilizer Application ◽  
Nitrogen Fertilizers ◽  
Control Treatment ◽  
Yield Response ◽  
Randomized Block Design ◽  
Coated Urea ◽  
Set Up ◽  
Polymer Coated Urea

Nitrogen (N) fertilizers have their use efficiency adversely affected by the rate and source of N. A two-year field experiment was conducted to examine the yield response of upland rice by using NBPT (urease inhibitor), PCU (polymer-coated urea) and uncoated urea under different N application rates. It was hypothesized that either NPBT or PCU may result in increased yield components of upland rice when compared to conventional urea. The experiment was set up in a randomized block design in a 3 &times; 4 + 1 factorial scheme, with four replicates. Treatments comprised three sources (conventional uncoated urea, NBPT-treated urea, and polymer-coated urea) and four rates (30, 60, 90 and 120 kg ha-1) of N, in addition to a control treatment (no fertilizer application). Nitrogen fertilizers were applied in two split doses: 50% at the seedling stage, and 50% at the tillering stage (~80 days after planting). The results revealed that the use of enhanced-efficiency N sources increased the productivity and plant height of upland rice crop when compared to conventional urea. As compared to when it is untreated or polymner-coated, treating urea with NBPT resulted in increased 100-grain weight.

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