Colloquium Agrariae
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Published By Associacao Prudentina De Educacao E Cultura

1809-8215, 1809-8215

2021 ◽  
Vol 17 (5) ◽  
pp. 55-65
Author(s):  
Kelli Pirola ◽  
Marcelo Dotto ◽  
Américo Wagner Júnior ◽  
Darcieli Aparecida Cassol

Surinam cherry is a native fruit tree with market potential. However, the pulp yield can be impaired by the size of the fruit seed. At UTFPR there is a genotype which produces seedless fruits, that can intensify the use of this species in orchards, and it is important to analyze the quality of the produced fruit. The aim of this study was to determine the quality of fruits from pirenic and apirenic accessions of Surinam cherry (Eugenia uniflora). In 2012, 2013 and 2015, 40 ripe fruits were collected from 23 Surinam cherry accessions, including an apirenic genotype one. The fruits were taken to the laboratory and analyzed regarding total fruit and seed weight, equatorial fruit and seed diameter, and total soluble solids content (SST). The twenty-third access presented physical characteristics that stood out from the other accesses, but, a larger size of the seed is an undesirable factor, once with industrialization it diminishes the use and yield of the pulp. Access 19, corresponding to the apirenic cherry tree, presented a smaller diameter and seed weight, which is a desirable feature. This genotype also has the physicochemical characteristics considered appropriate for processing or fresh market.


2021 ◽  
Vol 17 (5) ◽  
pp. 79-86
Author(s):  
André Felipe Barion Alves Andrean ◽  
Roberto Rezende ◽  
Vinícius Villa e Vila ◽  
Lucas Henrique Maldonado da Silva ◽  
Gustavo Soares Wenneck

Evapotranspiration and the estimation of crop coefficient (Kc) are essential information for irrigation management, contributing to increase the water use efficiency and optimizing resources, mainly using local data. This study aimed to determine the water consumption and the crop coefficient of cauliflower (Barcelona hybrid) in the northwestern region of Paraná. The experiment was conducted in a greenhouse at the Technical Irrigation Center belonging to the State University of Maringá, in Maringá - PR. The crop evapotranspiration was determined using constant water table lysimeters, and the reference evapotranspiration was estimated by the Penman-Monteith method (FAO), using climatological data collected in an automatic meteorological station. The cultivation was carried out from April to July. The total water consumption by the cauliflower was 215.11 mm, a higher value than that available in the FAO recommendations. The crop coefficient (Kc) recommended values for local conditions are 0.74 for the initial stage, 1.86 for the intermediate stage, and 1.50 for the final stage.


2021 ◽  
Vol 17 (5) ◽  
pp. 1-6
Author(s):  
Fernanda Fonseca Vilela ◽  
Jean Kaique Valentim ◽  
Guilherme Resende de Almeida ◽  
Silvana Lúcia dos Santos Medeiros ◽  
Sandra Regina Faria ◽  
...  

The objective of this study was to evaluate the replacement of soybean meal by extruded whole soybean in the feeding of pigs in the nursery phase. Thirty-six piglets (Landrace x Large White), with 45 days weighing on average 11.36 kg, distributed in arandomized block design, three treatments, six replicates, two animals per repetition were used. The treatments consisted of: control treatment (T1) basal diet, basal diet with 10% replacement of soybean meal by extruded soybean (T2), basal diet with 20% replacement of soybean meal by extruded soybean (T3). The variables analyzed were: average weight, feed intake, weight gain and feed conversion. The levels of ureatic activity, ether extract, crude protein, protein solubility and volatile moisture of extruded soybean were verified. No difference was found (P>0.05) between the inclusion levels of extruded soybean in piglet diets in the nursery phase for the variables studied. The processing of extruded whole soybean did not affect its digestibility. Extrudedsoybeans at a level of up to 20% included in piglet feeding during the nursery phase can be a possible substitute for soybean meal, without compromising the performance of the animals.


2021 ◽  
Vol 17 (5) ◽  
pp. 23-30
Author(s):  
Diego Roberto Courbassier Pina ◽  
Maurício Ferreira Lopes ◽  
Tatiane Carla Silva ◽  
Joane Alves Damasceno ◽  
Fabiano Borges de Vasconcellos

Nutrition has a fundamental role in the production of beef cattle, directly interfering in the costs, productivity and profitability of the activity. In this sense, the objective of the present study was to evaluate the challenges, opportunities and advantages of the production of the entire cattle fattening diet on the Angico farm, in the municipality of Corumbá - Mato Grosso do Sul. Applied research was carried out as a way of studying case. In the 2017/2018 harvest, the farm's own production yielded 116 bags/hectare of corn, 40 bags / hectare of soybeans, 42 tons / hectare of silage sorghum and 72.5 bags/hectare of grain sorghum. All these ingredients were used in the feed of the feedlot animals. It was concluded that at the Angico farm, with the use of proper planting and management techniques, it was possible to overcome production barriers (adverse weather, attack by pests, diseases and wild animals), thus improving the efficiency of the enterprise. In addition, it was possible to recover degraded pasture areas and increase the farm's food independence by reducing the purchase of food from third parties and reducing costs per arroba produced with the animals' own food production.


2021 ◽  
Vol 17 (5) ◽  
pp. 7-15
Author(s):  
Sindi Elen Senff ◽  
Viviane de Fátima Milcheski ◽  
Ana Caroline Basniak Konkol ◽  
Ana Carolina da Costa Lara Fioreze

Sweet potato (Ipomoea batatasL.) is a crop with high market demands because of its well-known health benefits. Limited use of improved clones reduces the crop’s income potential. Plant breeding programs seek to selectgenotypes with good results in a variety of environments by evaluating the interaction effects of genotypes and environments. This study aimed to assess Clone × Growing season effects on morphological and productive parameters of sweet potato clones grown in the municipality of Curitibanos, Santa Catarina, Brazil, in 2016/2017 and 2017/2018. The following clones were evaluated: Brazlândia Rosada, BRS Amélia, Beauregard, BrazlândiaRoxa, and BRS Rubissol. A randomized block design with three replications was used to investigate root length, root diameter, mean root weight, total root number, number of marketable roots, total yield, and marketable yield. Data were subjected to one-way and two-way analysis of variance. Beauregard afforded the largest number of marketable roots and was stable in both growing seasons. Beauregard, Brazlândia Roxa, and Brazlândia Rosada differed in total number of roots between growing seasons. There were no significant differences between growing seasons in mean root weight; BRS Amélia afforded a higher mean root weight than Brazlândia Rosada. Beauregard did not differ in total or marketable yield between growing seasons and provided higher yields than the other clones. BRS Rubissol and Beauregard were found to be the most promising for sweet potato cultivation under the environmental conditions of Curitibanos.


2021 ◽  
Vol 17 (5) ◽  
pp. 16-22
Author(s):  
Marllon José Karpegianne de Oliveira ◽  
Adriano Geraldo ◽  
Sara Santana Ramos Lemke ◽  
Diogo Alvarenga Miranda ◽  
Jean Kaique Valentim ◽  
...  

The objective of this study was to evaluatethe effects of including pequi pulp flour (PPF) in laying hendiets onperformance and egg quality.A total of 240 Hisex Brown strain were randomly assigned into 5 groups and were fed diets containing PPF at the level of 0%, 0.125%, 0.250%, 0.375%, and 0.5%. The experiment lasted63 days (3 periods of 21 days).The variables of performance andeggquality were submitted to linear and quadratic regression analysis at the level of 5% probability.Theoutcomes suggest that neither performance nor egg quality wasaffected (p > 0.05) by different levels of PPF.Dietary inclusion ofPPFtested in the present study wasnot sufficient to demonstrate improvement in the productive performance of birdsas well as in egg quality.Because of the lack of responses, additional research is needed to evaluate higher levels of PPF in the diets for laying hens.


2021 ◽  
Vol 17 (5) ◽  
pp. 31-42
Author(s):  
Geraldo Pastore ◽  
César Antônio da Silva ◽  
Nelson Geraldo Golinski ◽  
Fernando Zuchello ◽  
Cícero José da Silva

There is evidence that the purple nutsedge (Cyperus rotundus L.) aqueous extract can induce the plants rooting due to the high auxin concentrations. This study aimed to evaluate the effect of application seasons and concentrations of purple nutsedge aqueous extract application on the growth and production of carrot, cultivar Brasília. The experimental design was in randomized blocks, in a 2 x 5 factorial scheme in two seasons of the extract application (25 and 50 days after sowing) and five concentrations of (0%, 10%, 20%, 30% and 40%) with four replicates. Harvesting was carried out at 90 days after sowing, being evaluated the following morphological parameters: root diameter (cm); root fresh mass (g plant-1); plant height (cm); aerial part fresh mass (g plant-1); root dry mass (g plant-1); aerial part dry mass (g plant-1); plant dry mass (g plant-1); ratio between root dry mass and aerial part dry mass; root length (cm); commercial productivity (t ha-1); defective root mass (t ha-1); total productivity (t ha-1); commercial yield (roots kg-1); and root classification by length. The extract application at 50th day was more efficient for the root diameter (3.37 cm); fresh root mass (120.7 g plant-1); root length (15.4 cm); commercial productivity (68.2 t ha-1); total productivity (73.6 t ha-1); and commercial roots (8.8 roots kg-1). Root classification by length showed a higher percentage in the 14 cm classification range. The parameters did not present significant differences in both seasons, at 25th and 50th days, respectively, for root dry mass (12.0 and 12.8 g plant-1), ratio between dry mass of roots and aerial part (1.66 and 1.57), and defective root mass (1.3 and 1.5 t ha-1).


2021 ◽  
Vol 17 (5) ◽  
pp. 66-72
Author(s):  
Izabele Domingues Soares Miranda ◽  
Manoela Mendes Duarte ◽  
Rodrigo Otávio Veiga de Miranda

The Amazon has a wide diversity, including forest species with timber and non-timber potential, which often have their use restricted due to a lack of silvicultural information. Thus, the present study aimed to evaluate the effect of substrates and temperatures on seed germination of Aspidosperma vagarsii. Therefore, the premise of a completely randomized design was followed, in a 3 x 3 factorial scheme, with three substrates (paper, sand and vermiculite) and three temperatures (20, 25 and 30 °C). The germination percentage, germination speed index and mean germination time were determined, as well as germination relative frequency graphs. In addition, the weight of a thousand seeds, the number of seeds per kilo, and the moisture content was determined. The weight of thousand seeds was equal to 276.4 g, with 3,618 seeds per kilo, and a moisture content of 9.5%. There was no interaction between the studied factors. The sand substrate and temperatures of 20 and 25 °C presented the best results for seed germination of A. vargasii.


2021 ◽  
Vol 17 (5) ◽  
pp. 43-54
Author(s):  
Érica de Almeidasta Evangeli ◽  
Cristina Rossetti ◽  
Andreia Almeida ◽  
Alberto Bohn ◽  
Adhlei Pires ◽  
...  

The acquisition of high-quality seeds is essential to successfully implant areas with forage. However, to be commercialized, they must meet the minimum quality standards established by law. Inspections are necessary to guarantee the quality and identity of the commercialized seed. Thus, the objective was to evaluate the quality of tropical forage seed species collected in 2018, in the state of Mato Grosso. The survey was based on data from officers’ samples, in commercial establishments and fine consumers, collected during inspections conducted by the Agricultural Defense Institute of the State of Mato Grosso - INDEA-MT and subsequently analyzed by the Guilherme de Abreu Lima Seed Analysis Laboratory (LASGAL). Purity analysis, determination of other seeds by number (DOSN), germination test and tetrazolium test were carried out. The study showed that 75% of the analyzed samples reached the minimum requirements for commercialization in terms of physical purity; 95% of the samples were within the standard for physiological quality determined by law; and 91.9% did not exceed the maximum limits regarding the number of undesirable seeds present in a sample. In general, 36.1% of the total samples analyzed did not conform in some way to quality standards, therefore were not appropriate for commercialization.


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