scholarly journals Biostimulant and substrates on litchi tree propagation by air layering

2016 ◽  
Vol 7 (1) ◽  
pp. 122
Author(s):  
Jackson Mirellys Azevêdo Souza ◽  
Sarita Leonel ◽  
Luis Lessi Dos Reis ◽  
Rafael Augusto Ferraz ◽  
Bruno Henrique Leite Gonçalves
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Block Design ◽  
Dry Mass ◽  
Root Volume ◽  
Randomized Block Design ◽  
Commercial Area ◽  
Crop Cycle ◽  
The City ◽  
Substrate Types

The production of quality seedlings is important for the crop cycle and the main propagation type is by the air layering technique, which can be enhanced by using different substrates and plant growth regulators. Therefore, the objective of this study was to evaluate the use of a biostimulant and substrate types in the propagation of litchi tree by air layering. The experiment was installed in a commercial area in the city of Mogi Mirim, SP, Brazil and conducted in a randomized block design with a 5x2 factorial with four replications. The treatments consisted of five Stimulate® biostimulant concentrations (0, 3, 6, 9, and 12 ml L-1) and two substrate types (Plantmax® and earthworm humus). After 120 days, the root length (cm), number of roots, calloused and rooted layers percentage (%), root fresh and dry mass (g) and root volume (cm3) were evaluated. Based on the results, it was found that the concentrations of 6.1 and 6.9 ml L-1 promoted greater success in litchi tree propagation and that the layers can be produced on both evaluated substrates.

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 Interference Periods in Soybean Crop as Affected by Emergence Times of Weeds

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
R.R. ZANDONÁ ◽  
D. AGOSTINETTO ◽  
B.M. SILVA ◽  
Q. RUCHEL ◽  
D.S. FRAGA
Keyword(s):  
Weed Management ◽  
Critical Period ◽  
Block Design ◽  
Crop Productivity ◽  
Dry Mass ◽  
Weed Interference ◽  
Randomized Block Design ◽  
Intermediate Time ◽  
Crop Cycle ◽  
Weed Emergence

ABSTRACT: Weeds emergence times modify competition with crops. Thus, the hypothesis was that the increase in weed emergence flow decreases the period prior to interference (PPI) in soybeans and increases the critical period of interference prevention (CPIP). The objective was to determine the PPI and the CPIP of weeds in soybean crops as affected by the preferred time of weeds emergence flow. Three experiments were conducted in the field in a randomized block design with four replications. The treatments were arranged in a factorial design with factor A consisting of coexistence or weed control in soybeans and factor B for eight periods (0, 7, 14, 21, 28, 35, 42 and 135 days after crop emergence (DAE)). The numbers of emerged plants and weed dry mass by genus and crop productivity were evaluated. The weed interference in culture during all the crop cycle reduces the soybean average yield 73, 94 and 89% in the first, second and third sowing times, respectively. Chemical control may be adopted at the end of PPI, which must be done at 14, 15 and 5 DAE crop, for the first, second, third times, respectively. The sowing in advance and intermediate time of recommendation increase the PPI in about 10 days, favoring the weed management in soybean crops.

scholarly journals Effects of plant growth regulators in heliconia ‘Red Opal’

2016 ◽  
Vol 22 (3) ◽  
pp. 301
Author(s):  
Ana Cecilia Ribeiro de Castro ◽  
Fernando José Hawerroth ◽  
Carlos Alberto Kenji Taniguchi ◽  
Tiago Freitas Silva ◽  
Nazaré Suziane Soares
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Block Design ◽  
Dry Mass ◽  
Potted Plants ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
One Year

The objective of this study was to evaluate growth regulators with purpose of reducing the size of heliconia ‘Red Opal’ potted plants. The experiment was carried out in randomized block design with five treatments (trinexapac-ethyl and paclobutrazol at rates of 37.5 and 75.0 mg of active ingredient per pot and control without growth regulator) and five replicates. The treatments were applied 40 days after planting the rhizomes in pots filled with soil. Thirty and 150 days after the growth regulator application, plant height, number of leaves and shoots, petioles length and leaf area were evaluated. One year after planting the rhizomes in pots the number of inflorescence and leaves (leaves, sheathing leaf bases and inflorescences) and rhizomes (rhizomes and roots) dry mass were determined. Trinexapac-ethyl had no differences compared to the control in any of the variables evaluated. Paclobutrazol proved effective in reducing plant height, leaf area and petiole length and increase in number of leaves and shoots but the effect was temporary. Also, it did not affect the inflorescences production and leaves and rhizomes dry mass. Paclobutrazol is efficient to promote height reduction and to increase the number of shoots in heliconia ‘Red Opal’ potted plants without affect the inflorescence formation but its effects is temporary.

scholarly journals Potato plant growth and macronutrient uptake as affected by soil tillage and irrigation systems

2006 ◽  
Vol 41 (12) ◽  
pp. 1787-1792 ◽  
Author(s):  
Julio Cezar Silveira Nunes ◽  
Paulo Cezar Rezende Fontes ◽  
Eduardo Fontes Araújo ◽  
Carlos Sediyama
Keyword(s):  
Plant Growth ◽  
Potato Plant ◽  
Block Design ◽  
Dry Mass ◽  
Soil Tillage ◽  
Mass Yield ◽  
Irrigation Systems ◽  
Area Index ◽  
Randomized Block Design ◽  
Moldboard Plow

The objective of this study was to evaluate potato plant growth and macronutrient uptake, as affected by soil tillage methods, in sprinkle and drip irrigated experiments. Eight treatments were set: T1, no tillage, except for furrowing before planting; T2, one subsoiling (SS); T3, twice rotary hoeing (RH); T4, one disc plowing (DP) + twice disc harrow leveling (DL); T5, 1DP + 2DL + 1RH; T6, 1DP + 2DL + 2RH; T7, 1SS + T6; T8, one moldboard plowing (MP) + 2DL. Treatments were arranged in a randomized block design with four replications. In both irrigation systems, plants presented higher emergence velocity index (EVI), when the soil was not tillaged, and the EVI was inversely related to the maximum tuber dry mass production. In both experiments, a functional direct relationship was found between the leaf area index and maximum tuber dry mass yield. The growth of plant organs (tuber, leaf, stem and root) and the macronutrient (N, P, K, Ca and Mg) contents in potato plant responded positively to a deeper soil revolving caused by plowing, especially with moldboard plow.

scholarly journals The Effect of Shallot Extract and Auxin-Plant Growth Regulators on the Growth of Mucuna bracteata D.C.

2021 ◽  
Vol 4 (2) ◽  
pp. 130-138
Author(s):  
Silvana Prameswari ◽  
Bayu Pratomo
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Oil Palm ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Distilled Water ◽  
Survival Percentage ◽  
Randomized Block Design ◽  
Number Of Leaves

Introduction: This study aims to obtain concentration of shallot extract (Allium cepa ) and growth regulators to increase growth of Mucuna bracteata. Mucuna is a land cover plant that must be planted in oil palm plantation areas. It is very important to be able to cover the planting area. Materials and Methods: This study used two factorial in randomized block design. The first was concentration of shallot extract per 100 ml distilled water consists of 4 levels, such as control (B0), 10 cc (B1), 20 cc (B2), 30 cc (B3) and the second was the auxins-plant growth regulator consists of 4 levels: Control (G0), 100 ppm (G1), 200 ppm (G2), 300 ppm (G3). Data analyzed with ANOVA with a significant 5% and continued with the DMRT using SAS version 9.1.3. Results: It was found that effect of concentration of shallot extract had a significant effect on survival percentage of Mucuna bracteata at a concentration of 10 cc (B2) after opening the lid at four weeks after planting (WAP) and did not change until 8 WAP. Likewise, the number of leaves at the control concentration (B0) at the age of 6 WAP, and a concentration of 10 cc (B1) at the age of 7-8 WAP. The concentration of growth regulators and their interactions did not significantly affect the survive percentage and number of leaves in Mucuna bracteata.

scholarly journals Growth of Pepper Cuttings (Piper ningrum L.) at various type of Plant growth regulator

2019 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
K. Kasriana ◽  
Marlina Mustafa ◽  
Yolanda Fitria Syahri
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Leaf Growth ◽  
Block Design ◽  
Plant Materials ◽  
Randomized Block Design ◽  
Effective Combination ◽  
Soil Media

Pepper is an important crop in Indonesia because it is one of the country's foreign exchange sources because it is one of the export commodities. The availability of good plant materials will support increased production. Provision of growth regulators in vegetative propagation is very influential on the propagation of pepper plants. The purpose of this study was to determine the most effective combination of growth regulators for pepper cutting. This study was conducted using a randomized block design consisting of eight treatments namely Control (P1), metallic 2 mL L-1 water (P2), mastafol 2 mL (p3), Atonik 2 mL (P4), metallic 1 mL + Mastafol 1 mL (P5), metallic 1 mL + atonic 1 mL (P6), mastafol 1 mL + atonic 1 mL (P7), metallic 0.66 mL + Mastafol 0.66 mL + Atonic 0.66 mL (P8). Setek is grown on soil media: fuel husk: manure (2: 1: 1). The results showed that the best  Plant growth regulator  combination treatment for the growth of pepper cuttings was P7 (mastafol 1 mL L-1 water + atonic 1 mL L-1 water), which can be seen in the parameters of the number of roots, root length, root volume and number of shoots. The treatment of  Plant growth regulator  given did not significantly affect the character of leaf growth

scholarly journals Salinity stress and plant growth regulator in basil: effects on plant and soil

DYNA ◽  
2021 ◽  
Vol 88 (217) ◽  
pp. 75-83
Author(s):  
Leonardo Vieira de Sousa ◽  
Toshik Iarley da Silva ◽  
Maria de Fátima de Queiroz Lopes ◽  
Márcia Paloma da Silva Leal ◽  
Ana Gabriela Sousa Basilio ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Parameters ◽  
Saline Water ◽  
Block Design ◽  
Dry Mass ◽  
Shoot Height ◽  
Randomized Block Design ◽  
The Matrix

The water in semiarid regions contains salts in excess. When good quality water is not available it is necessary to use strategies that can make feasible the use of saline water. The aim of this study was to evaluate the effects of the application of the plant growth regulator on the culture of basil stressed with salt. The experiment was carried out in a randomized block design by the matrix “Central Box Compound”. Shoot height, stem diameter, leaf area, dry masses and soil chemical characteristics were evaluated. The salinity of the irrigation water causes reduction of the basil growth parameters, with the exception of the inflorescence dry mass. Plant growth regulator applications have effect on basil growth when plants are irrigated with saline water.

scholarly journals Impact of Plant Growth Regulators on Sesame (Sesamum indicum L.) Yield and its Attributes

2021 ◽  
Vol 10 (10) ◽  
pp. 102-107
Author(s):  
D. M. Hadiya H. S. Bhadauria ◽  
K. P. Prajapati A. K. Singh ◽  
V. H. Kanabi
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Seed Yield ◽  
Growth Regulators ◽  
Block Design ◽  
Foliar Spray ◽  
Sesamum Indicum ◽  
Rainfed Condition ◽  
Randomized Block Design ◽  
Biological Yield

The experiment was conducted at Agronomy Instructional Farm, S. D. Agricultural University, Sardarkrushinagar during Kharif 2020 to examined the effect of different foliar spray of plant growth regulators viz., GA3 (100 and 200 ppm), NAA (50 and 100 ppm), CCC (500 and 1000 ppm) and SA (500 and 1000 ppm) on seed yield and its related attributes of sesame variety (Gujarat Til 3).The research was laid out in randomized block design, with ten treatments in three replication under rainfed condition. GA3 200 ppm significantly increased seed yield and its attributes of sesame the number of capsule per plant, number of seeds per capsule, biological yield, harvest index and oil content.

scholarly journals Interference Periods of Raphanus raphanistrum L. in Sunflower Crop

2020 ◽  
Vol 38 ◽  
Author(s):  
D. AGOSTINETTO ◽  
N. WESTENDORFF ◽  
R.R. ZANDONÁ ◽  
A.R. ULGUIM ◽  
A.C. LANGARO
Keyword(s):  
Block Design ◽  
Dry Mass ◽  
Wild Radish ◽  
Raphanus Raphanistrum ◽  
Total Period ◽  
Weed Interference ◽  
Randomized Block Design ◽  
Development Cycle ◽  
Sunflower Crop ◽  
Crop Cycle

ABSTRACT: Raphanus raphanistrum L. (wild radish) stands out among the weeds that cause greatest damage to the sunflower crop, due to the development cycle and adaptability. The objective of this research was to determine interference periods of sunflower interacting with wild radish, and the effects of competition on yield and its components. The experiment was conducted in the field in a randomized block design with four replications. The treatments were arranged in a factorial design with factor A composed of wild radish coexistence or control in sunflower, and factor B, for eight periods (0, 7, 14, 21, 28, 35, 42 and 135 days after crop emergence). It was evaluated height, diameter of chapters, achene yield and dry matter of weeds and crop. The presence of wild radish adversely affects the accumulation of dry mass, head diameter, thousand grain weight and reduces sunflower productivity when the wild radish interacts during the whole crop cycle, but does not affect on plant height. Chemical control of wild radish may be adopted at the end of period prior to interference, which for sunflower crop is 13 DAE, and the application is sufficient to avoid weed interference until the end of the total period of interference prevention which occurs until 17 days after crop emergence.

scholarly journals Artificial shading promotes growth of taro plants

2018 ◽  
Vol 48 (2) ◽  
pp. 83-89
Author(s):  
Ancélio Ricardo de Oliveira Gondim ◽  
Mário Puiatti ◽  
Fernando Luiz Finger ◽  
Paulo Roberto Cecon
Keyword(s):  
Light Intensity ◽  
Leaf Area ◽  
Specific Leaf Area ◽  
Block Design ◽  
Dry Mass ◽  
Colocasia Esculenta ◽  
Plant Samples ◽  
Randomized Block Design ◽  
Crop Cycle ◽  
Artificial Shading

ABSTRACT Taro (Colocasia esculenta) is a plant with a long crop cycle, what hinders its cultivation in properties with area limitations. The association of crops is an option for this kind of situation. However, in order to plan the cultivation using the intercropping system, it is important to define the tolerance levels of the taro plants and the period of highest sensibility to shading. This study aimed to evaluate the behavior of the 'Japanese' taro crop, regarding growth, cultivated under levels and periods of artificial shading. A split-plot randomized block design, with 13 treatments and four replications, was used. The plots consisted of four shading levels (control = full sun, 18 %, 30 % and 50 % of shade), maintained throughout the cycle or during three months, in three periods (initial = 0-3 months; intermediate = 3-6 months; final = 6-9 months). The subplot was composed of eight plant samples (60, 90, 120, 150, 180, 210, 240 and 270 days after planting). The shading levels increased the total and specific leaf area, leaf area and mass ratios and dry mass partition. Thus, the taro plants showed the capacity to make leaf adjustments to suit changes in light intensity. The shading intensity of 18 %, during the whole cycle or in any of the periods studied, provides a high expansion of the leaf area.

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