scholarly journals Floral induction management in 'Palmer' mango using uniconazole

2016 ◽  
Vol 46 (8) ◽  
pp. 1350-1356 ◽  
Author(s):  
Guilherme Machado de Sousa Lima ◽  
Marlon Cristian Toledo Pereira ◽  
Moacir Brito Oliveira ◽  
Silvia Nietsche ◽  
Gisele Polete Mizobutsi ◽  
...  

ABSTRACT: The objective of this study was to evaluate the effects of different doses of uniconazole (UCZ) on 'Palmer' mango vegetative and reproductive response and on fruit physical, chemical, and productive characteristics during the off-season in northern Minas Gerais, Brazil. The experiment followed a randomized block design. UCZ was tested at the following doses applied to leaves and expressed in g of UCZ active ingredient (a.i.) per tree: 0.0, 1.0, and 1.0+1.0 (2.0) after 30 days; 1.0+1.0+1.0 (3.0) subdivided into 30-day intervals; and 1.0+1.0+2.0 (4.0) subdivided into 30-day intervals. All of the UCZ treatments reduced branch elongation in the 'Palmer' mango trees, leading to a mean reduction of 81.6% compared to the control. However, the UCZ application of 1.0+1.0+2.0g a.i. per tree subdivided into 30-day intervals was efficient in promoting flowering during the off-season, enabling a 167% mean increase in the number of fruit per tree and a 9.78t ha-1 mean increase in productivity.

2018 ◽  
Vol 17 (3) ◽  
pp. 474
Author(s):  
JÚNIA DE PAULA LARA ◽  
IRAN DIAS BORGES ◽  
FLÁVIA CRISTINA DOS SANTOS ◽  
RAFAEL AUGUSTO DA COSTA PARRELLA

 RESUMO - O sorgo sacarino pode ser plantado para fins energéticos. O objetivo deste trabalho foi avaliar o desempenho agroindustrial, qualitativamente e quantitativamente, da cultivar de sorgo sacarino BRS 511 submetida a diferentes doses de N e K2O em cobertura. Foi conduzido experimento sem irrigação na região Central de Minas Gerais. O delineamento utilizado foi em blocos casualizados, com 3 repetições, e os tratamentos foram dispostos em esquema fatorial 4x4, sendo 4 doses de nitrogênio (45, 90, 135 e 180 kg ha-1) x 4 de potássio (50, 100, 150 e 200 kg ha-1) em cobertura. Características avaliadas: extração de caldo, massa verde, massa seca, sólidos solúveis totais, °Brix t/ha, teor de sacarose, açúcar redutor total, quantidade de álcool por hectare e quantidade de álcool por tonelada de massa verde. O sorgo sacarino respondeu à adubação nitrogenada e potássica em cobertura, sendo que a adubação nitrogenada interferiu mais nas variáveis analisadas em relação ao potássio. O melhor desempenho considerando a produção de litros de etanol por hectare, toneladas de °Brix por hectare, litros de etanol por tonelada de massa verde, teor de sacarose e açúcar redutor total foi obtido com altas doses de N e K2O em cobertura (cerca de 120 e 130 kg ha-1, respectivamente).Palavras-chave: etanol, Sorghum bicolor, adubação. AGROINDUSTRIAL PERFORMANCE OF SORGHUM SACCHARINE SUBJECTED TO DIFFERENT DOSES OF TOPDRESSED NITROGEN AND POTASSIUM  ABSTRACT - The sweet sorghum, or sorghum saccharine, is planted in reformed areas of sugarcane for energy purposes. The objective of this study was to assess qualitatively and quantitatively the agroindustrial performance of sorghum saccharine cultivar BRS 511 subjected to different doses of topdressed N and K2O, without irrigation in the Central region of Minas Gerais. A randomized block design with three replications was used and treatments arranged in a factorial 4 x 4 with four nitrogen rates (45, 90, 135 and 180 kg ha-1) and 4 potassium doses (50, 100, 150 and 200 kg ha-1). The characteristics evaluated were: juice extraction, green mass, dry matter, total soluble solids, tons of Brix per hectare, sugar content, total reducing sugar, alcohol and ethanol per hectare per ton of biomass. The best performance of sorghum saccharine, considering the production of liter of ethanol per hectare, tons brix per hectare, gallons of ethanol per ton of biomass, sugar content and sugar total reducing, occurred with use of high doses of topdressed N and K2O (up to 120 to 130 kg ha-1, respectively).Keywords: ethanol, Sorghum bicolor, fertilizer. 


2021 ◽  
Vol 9 (2) ◽  
pp. 238
Author(s):  
Monica Rusiyantoro ◽  
Sri Mulyani ◽  
I Wayan Arnata

The concentrations of cocoa liquor is an alternative to increase phenolic compounds and at the same time as a natural coloring agent in creams. This study aims to determine the effect of the concentration of the cocoa liquor on the characteristics of the cream with the active ingredient of turmeric and tamarind leaves and to determine the cocoa liquor concentration to produce the best characteristics of the cream with the active ingredient of turmeric and tamarind leaves. This study used a randomized block design with 6 levels of cocoa liquor concentration of 0%, 4%, 6%, 8%, 10%, and 12%. The variables observed were homogeneity, viscosity, pH, spreadability, separation ratio, adhesion, L*, a*, b* color test, and total phenol of the cream. The results showed that the treatment of cocoa liquor concentration had a very significant effect on pH, viscosity, adhesion, dispersion, L*, a*, b* color tes, total phenol test, and organoleptic color test. Meanwhile, the treatment of cocoa liquor concentration had a significant effect on the separation ratio of the cream with the active ingredient of turmeric and tamarind leaf. The results of this study indicate that the concentration of cocoa liquor as much as 4% produces a cream with the active ingredient of turmeric and tamarind leaves with the best characteristics that are homogeneous with pH 6.13, viscosity 15333cp and, adhesion 2.39sec, spreadability 7.18cm, separation ratio 0.95, color test values L * 15.39, the values of a * 11.55, the values of b * 13.92, with the organoleptic test for color preferences 5.1. Keywords: Liquor cacao, turmeric, tamarind leave, cream characteristics


2020 ◽  
Vol 2 (1) ◽  
pp. 48-54
Author(s):  
Mhd Zakaria

The purposes of this research are to know the level of paddy field degradation, mapping level of paddy field degradation and analyze effort of paddy field rehabilitation in Beringin Subdistrict of Deli Serdang Regency of North Sumatera Indonesia to increase rice productivity. This research was conducted in Medan Krio Village, District Sunggal Regency Deli Serdang of North Sumatera. The study was conducted in March to July 2017. This research used nonfactorial Randomized Block Design (RBD) with 5 levels organic dosage treatment of Compost Waste City, i.e: B0: Control, B1: Dose 1.5% (36,00 ton/ha), B2: Dose 3% (72,00 ton/ha), B3: Dose 4.5% (108,00 ton/ha), B4: Dose 6% (144,0 ton/ha). The parameters that will be analyzed are the physical, chemical and biological properties of soil in paddy fields. The result showed, treatment with Dose 6% (B4) can (1) improve physical properties of soil Bulk Density, Porosity and the effective depth of soil; (2) increase the C-organic content, N-Total levels of P-Available, CEC soil, and low C/N Ratio; (3) increase Soil organic matter and total Microbes. So, Treatment Dose 6% (B4) of compost waste city gives the best effect to the physical, chemical and biological properties of soil in paddy fields


2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Elaine Cristina Batista ◽  
José Luiz De Andrade Rezende Pereira ◽  
Adriano Teodoro Bruzi ◽  
Everton Vinucius Zambiazzi ◽  
Karina Barroso Silva

Cultivar evaluation is one of the basic steps recommended for a given region, since the best adapted cultivars have higher yields, and success in this parameter is based on the genotype of the material and its interaction with the environmental variables. The aim of this study was to evaluate thebehavior of 23 soy cultivars in the soil-climatic conditions of the south region of Minas Gerais State (MG), Brazil, in the municipality of Inconfidentes. The evaluated traits were grain yield, plant height, height of insertion of the first legume and lodging. The experiments were conducted on the 2013/2014 and 2014/2015 harvests, adopting a randomized block design with three replicates and 23 treatments, which were constituted by the following cultivars: FAVORITA RR, BRS MG 760SRR, NA 5909 RG, NA 7200 RR, CD 2630, CD 250, NA 7620 RR, CD 2737, TMG 123, V-MAX RR, P 98Y11 RR, NS 7100 RR, BMX Potencia, Anta 82 RR, CD 237, V-TOP, TMG 1176 RR, TMG 1174 RR, TMG 1179 RR, TMG 1181 RR, BMX Força, Monsoy 7211 RR and BRS MG 780 RR. Of the studied cultivars, those that most stood out for the traits evaluated in the conditions of Inconfidentes (MG) were TMG 1179 RR (48.6 bags of 60 kg ha-1), NA 7200 RR (45.6 bags), CD 2737 (41.1 bags), CD 237 (41 bags) and BRS MG 760 SRR (40.6 bags), all of which displayed satisfactory conditions for mechanical harvesting, demonstrating the good performance of the crop in the south region of Minas Gerais State.


2021 ◽  
Vol 14 (4) ◽  
pp. 1-10
Author(s):  
Lucas Ferreira de Morais ◽  
Wendy Carniello Ferreira ◽  
Francielly Rodrigues Gomes ◽  
Edésio Fialho dos Reis ◽  
Daniela Pereira Dias ◽  
...  

The objective of this work was to evaluate the effect of different doses of limestone, phosphorus, and potassium on the initial development of Anacardium humile (Cajuzinho-do-cerrado) seedlings. The experiment was conducted in a greenhouse. A randomized block design was adopted in a 3x4x4 factorial scheme (liming x phosphorus x potassium doses). The treatments consisted of three liming doses (0; 40; and 70% of base saturation), four doses of potassium chloride with 60% of K2O (0; 60; 120; and 180 kg ha-1), and four doses of triple superphosphate with 46% of P2O5 (0; 80; 160; and 240 kg ha-1), with six replications. The following characteristics were evaluated: stem diameter (SD), plant height (PH), root length (RL), shoot dry matter (SDM), and root dry matter (RDM). The data were submitted to analysis of variance and the averages were compared by Tukey’s test (p < 0.05). It was concluded that there was no influence of phosphorus doses on the initial development of A. humile seedlings and that there was a response to the association between liming and potassium chloride in vegetative growth.


Author(s):  
D. S. Ferreira ◽  
J. F. T. do Amaral ◽  
L. L. Pereira ◽  
J. M. S. Ferreira ◽  
R. C. Guarçoni ◽  
...  

Abstract The production of specialty coffee has several factors and parameters that are added up in the course of production, so that the quality is expressed in the act of consumption. Based on this scenario, this study included the analysis of ten genotypes of arabica coffee, the materials being subjected to irrigated and rainfed water regimes, in a low altitude region, to identify responses for sensory and physical–chemical quality. The genotypes were evaluated in a split-plot scheme with a randomized block design, with three replications. Arabica coffee fruits were harvested with 80% cherry seeds and processed by the wet method. Subsequently, the characteristics related to physical–chemical and sensory analyses were evaluated. The genotypes of the Paraíso group showed great variability for the physical–chemical and sensory variables for rainfed and irrigated regimes. The genotypes of the Catuaí group, however, showed less variability for sensory characteristics in both cultivation environments and for physical–chemical characteristics in the irrigated regime. In the sensorial data set, the genotypes Catuaí 144 CCF and Catuaí 144 SFC (when irrigated) and Paraíso H 419-3-3-7-16-2, Paraíso H 419-3-3-7-16-11 and Catucaí 24-137 (rainfed cultivation), are more favourable to the production of specialty coffee at low altitude.


2019 ◽  
Vol 11 (6) ◽  
pp. 556
Author(s):  
Luara Cristina de Lima ◽  
Renato Aurélio Severino de Menezes Freitas ◽  
Leandro Martins Barbero ◽  
Regina Maria Quintão Lana ◽  
Fernanda Carvalho Basso ◽  
...  

The objective of this work was to evaluate the performance of Urochloa hybrid Convert HD364 applied in different doses as a vegetable biostimulant under grazing simulation in intermittent stocking in the city of Uberl&acirc;ndia, Minas Gerais. The treatments consisted of a control (absence of biostimulant) and in 5 doses of biostimulant, 0.25; 0.5; 0.75; 1.0 and 1.25 L ha-1, in a randomized complete block design with 4 replicates. Productive and qualitative parameters were evaluated. The data were submitted to analysis of variance, using for the comparison of means, the Regression test at 5% of significance. The biostimulant promotes an increase in the accumulation of DM and in the rate of accumulation of forage, leaves and stems of Urochloa hybrid and reduction in the percentage of dead material and the L:S ratio of Urochloa hybrid.


Agrologia ◽  
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Zakarias Frans Mores Hukom

Antioxidant is a term related to the activity ability and properties of the active ingredient.  The higher the ability of the antioxidant activity of an active ingredient, the stronger its antioxidant properties are to ward off various free radical compounds due to oxidative stress. The activity ability and antioxidant properties of tea shoots often fluctuate with changing seasons.  This study investigated the effect giving nitrogen levels in organic + inorganic liquid fertilizers on the ability of activity and antioxidant properties of tea shoots in different seasons. The experimental design used was a over season complete randomized block design consisting of 5 levels of fertilization concentration in the rainy and dry seasons. The results showed that the application of organic + inorganic liquid fertilizers without the addition of N concentration in the dry season had a significant effect on the antioxidant activity of tea shoots by 88.14%, and 34.15% higher than control plants in the rainy season and 41.81% more. Height of control plants in the dry season. The IC50 value of tea shoots in the rainy season and dry season has very strong antioxidant properties where the order of the antioxidant properties of the control plants < all concentrations of adding N to organic + inorganic liquid fertilizers < concentration of organic + inorganic liquid fertilizers without the addition of N.Keywords: Ability Antioxidant Activity, Organic + Inorganic Liquid Fertilizer, Tea shoots, Antioxidant Properties.


2016 ◽  
Vol 21 (2) ◽  
pp. 135
Author(s):  
Wiwin Setiawati ◽  
Neni Gunaeni ◽  
Subhan ◽  
Agus Muharam

Pola tanam sayuran secara tumpang sari telah dimanfaatkan secara meluas di sentra-sentra produksi  sayuran di Indonesia. Penelitian ini bertujuan mengetahui pengaruh pemupukan dan tumpangsari antara tomat dan kubis terhadap populasi Bemisia tabaci dan serangan penyakit virus kuning yang disebabkan oleh virus gemini pada tanaman tomat. Penelitian dilaksanakan di Kebun Percobaan Balai Penelitian Tanaman Sayuran, Lembang (1.250 dpl.) dari bulan Juni sampai dengan Oktober 2008. Rancangan yang digunakan ialah acak kelompok pola faktorial dengan empat ulangan. Dua faktor perlakuan yang diuji, yaitu (1) dosis pupuk (N 180 kg/ha + P2O5 150 kg/ha + K2O 100 kg/ha,  N 168 kg/ha + P2O5 146,5 kg/ha + K2O  145 kg /ha, serta  N 210 kg/ha + P2O5 183,125 kg/ha + K2O 181,25 kg/ha) dan (2) cara tanam (monokultur tomat dan tumpangsari tomat dengan kubis). Hasil penelitian menunjukkan bahwa penggunaan dosis pupuk yang tinggi dan tanaman tomat yang ditanam secara monokultur dapat meningkatkan populasi kutukebul dan serangan penyakit virus kuning dibandingkan dengan dosis pupuk yang lebih rendah. Penggunaan dosis pupuk yang tinggi tidak berpengaruh nyata terhadap peningkatan produksi tomat. Penggunaan dosis pupuk N 168 kg/ha + P2O5  146,5 kg/ha + K2O 145 kg/ha dan tumpangsari tomat dengan kubis dapat direkomendasikan sebagai komponen teknologi PHT untuk pengelolaan hama B. tabaci dan penyakit virus kuning pada tanaman tomat.<br /><br />The intercropping planting technique is widely implemented in vegetable production centers in Indonesia. The research on the application of different doses of fertilizers (N, P, and K) and the planting technique of tomato and cabbage  on B. tabaci and the yellow disease caused by gemini virus was carried out at the Indonesian  Vegetables Research Institute from June to October 2008. The objective was to determine the effect of different doses of fertilizers (N, P, and K) and tomato-cabbage intercropping on the population densities of B. tabaci and incidence of gemini virus on tomato.  A factorial randomized block design with two factors and four replication was used in the experiment. Two treatments factor were tested i.e.  (1) different doses of fertilizers (N 180 kg/ha + P2O5 150 kg/ha + K2O 100 kg/ha,  N 168 kg/ha + P2O5 146,5 kg/ha +  K2O 145 kg/ha, and  N 210 kg /ha +  P2O5 183,125 kg/ha + K2O 181,25 kg/ha), and (2) planting techniques (monoculture and tomato-cabbage intercropping). The result indicated that heigher doses of fertilizers resulted in higher population of whitefly per leaf and yellow virus symptoms on tomato compared to lower doses. Higher amounts of fertilizers did not significantly affect tomato yield. It is suggested that the dose of  N 168 kg/ha + P2O5 146,5 kg/ha + K2O 145 kg/ha, and the tomato-cabbage intercropping technique can be incorporated into the IPM program, especially for the management of  whitefly and gemini virus on tomato.<br /><br /><br />


Author(s):  
Camila B.A. Tufik

The potato is one of the most economically important crops in Brazil, and among the items that most cost the production is seed potatoes. The deficiency of one nutrient can interfere with the absorption and accumulation of the others in plants. The aim of this work was to quantify the optimal potassium (K) dose for minituber basic seed potato yield in hydroponic system. The experiment was installed in a greenhouse with the Agata cultivar minitubers. The treatments consisted of five doses of K (0.0; 2.5; 5.0; 7.5 e 10.0 mmol L-1) with four repetitions. The experimental design was a randomized block design. Data were submitted to analysis of variance and regression. The number of tubers, fresh mass, classification and dry mass were measured. The content of K and content other nutrients in the seed potato tubers were also evaluated. In the hydroponic systems, the maximum yield per plant was 48.41 tubers obtained with 6.15 mmol L-1 of K and maximum mass of fresh matter was 646.6 g.


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