Jailson Lara Fagundes

Federal University of Sergipe

The presence of spoilage microorganisms in forage interferes with the fermentation process of silage, due to competition with lactic acid bacteria for substrate, generating losses and influencing the nutritional value of the ensiled material. Thus, the objective is to evaluate the effect of “Alecrim Pimenta” essential oil (Lippia sidoides) and nano...

A presença de microrganismos deterioradores na forragem interfere no processo fermentativo da silagem, devido a competição com as bactérias ácido láticas por substrato, gerando perdas e influenciando o valor nutritivo do material ensilado. Assim, objetiva-se avaliar o efeito do óleo essencial de Alecrim pimenta (Lippia sidoides) e do timol nanoform...

In tropical areas, the lower productivity of sweet potato has been related to unfavorable climatic conditions, as heat stress caused by high temperatures limits the optimal genotypic expression of plants. Innovative techniques, such as particle films, have been proposed to reduce productivity loss caused by such conditions. Herein, we examine wheth...

Facing climate change is necessary to know the effects of temperature on plant development and identify which physiological factors are related to the reduction and/or increase in photosynthesis. This identification can be made in the first stages of development. Thus, the objective was to evaluate the physiological parameters of the sugarcane cult...

High temperatures may affect the development and yield of the sweet potato crop. Technologies such as particle films can mitigate their effects. This study aimed to evaluate the effect of calcium oxide (CaO) particle film on sweet potato remobilization and accumulation of photoassimilates, as well as its impact on the crop yield. The experimental d...

The objective of this study was to evaluate the productive and structural characteristics of Paiaguas palisadegrass established in monoculture and intercropped with agricultural crops in 2018 and 2019. The evaluated treatments were: Paiaguas palisadegrass (PP) in monoculture, PP intercropped with maize, PP intercropped with sorghum, and PP intercro...

Objetivou-se avaliar as características químicas e nutricionais do feno de capim elefante amonizado com diferentes níveis de ureia (0,0; 0,5; 1,0; 1,5 e 2,0% da matéria seca). O delineamento experimental foi o inteiramente casualizado e a estimativa dos coeficientes de regressão foi feita através do teste T de Student (5% de significância). Os dado...

The objective of this work was to evaluate the effect of the application of calcium oxide (CaO) particle film on the physiological performance, bromatological quality, and productivity of sweet potato (Ipomoea batatas). The experimental design was randomized complete blocks with three treatments (5, 10, and 15% CaO particle film concentrations) and...

Environmental conditions, such as high air temperature, can limit sweet potato cultivation in tropical areas. The calcium particle film application has been used to minimize the effects of adverse climate conditions on plants, with the potential to increase crop yield. This study aimed to evaluate calcium oxide particle films (CaO, particle size ≤...

Objetivou-se determinar a equação de regressão para se estimar o volume de gases para implantação da técnica semiautomática de produção de gases in vitroe avaliar a correlação entre os parâmetros de fermentação ruminal e de composição bromatológica de forrageiras tropicais. As espécies avaliadas foram Urochloa brizanthacv. MG-5, Andropogon gayanus,...

The digit grass is a highly cultivated species in Northeast Brazil, especially in Sergipe and Alagoas. However, research related to the management of fertilization of this specie is incipient. This experiment was carried out to examine the productive potential of digit grass and its morphological changes in response to nitrogen fertilization. The e...

The objective of this work was to evaluate the effect of defoliation strategies and insolation periods on the population dynamics and structural characteristics of Digitaria eriantha 'Survenola'. The following four defoliation strategies (DSs) were evaluated: 40/10, 40/20, 50/10, and 50/20 cm (that is, 40 and 50 cm pre-defoliation height, and 10 an...

Objetivou-se fracionar os carboidratos e proteínas forrageiras submetidas ou não a irrigação. Foram avaliadas: Panicum maximum, Urochloa brizantha, Andropogon gayanus, Urochloa humidicola e Digitaria umfolozi, submetidas a dois níveis de irrigação. O delineamento experimental utilizado foi em esquema fatorial 5x2, com 4 repetições. As forrageiras f...

The deferred pasture structure determines the consumption and performance of grazing animals and, in addition, can be influenced by the duration of the deferment period and nitrogen (N) fertilisation. The objective of this work was to evaluate the structural characteristics of Brachiaria brizantha syn. Urochloa brizantha cv. Piatã (piatã palisadegr...

The purpose of this study was to examine the growth and senescence dynamics of Digitaria eriantha cv. Survenola as a response to several canopy heights (25, 35, 45, and 55 cm) of harvests in two seasons of the year (rainy and dry). The experiment was established at the Federal University of Sergipe, in São Cristóvão - SE, Brazil, from 03/26/2015 to...

The objective of this work was to evaluate the effects of CaO-based particle film on the physiological parameters of cowpea (Vigna unguiculata) subjected to water restriction. Plants were subjected to two levels of soil moisture and three concentrations of the film, as follows: control, without film + 100% crop evapotranspiration (ETc); without fil...

The objective of this work was to evaluate the tillering dynamics of 'Suvernola' digit grass (Digitaria eriantha) when subjected to different defoliation frequencies. Four defoliation frequencies (interval among harvests) were evaluated - very high, when the grass reached 25 cm in height; high, 35 cm; medium, 45 cm; and low, 55 cm - in two seasons...

This study was undertaken to examine the herbage accumulation dynamics and structural characteristics of digit grass subjected to different defoliation frequencies in the period of January 2015 to February 2016. Four defoliation frequencies [very high (25 cm), high (35 cm), medium (45 cm), and low (55 cm)] were evaluated in two periods of the year...

Other materials with potential for the production of particle films for agriculture, besides the traditional use of kaolin, can present solar radiation reflection properties and promising results for temperature reduction and mitigate effects of climate change and adverse conditions on grapevine cultivation. The objective of this work was to verify...

The main obstacle to animal production based on the use of pasture is climate change, which occurs in Brazil throughout the year. This variation creates delays in fattening and finishing of grazing animals, which ultimately often compromising the quality of products from animals pastures. Water is the most limiting factor to forage production, the...