03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
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Resultados da Pesquisa
Item Levantamento fitossociológico de plantas invasoras em cultivos de palma forrageira e milho(2022-05-27) Gomes, Victor Henrique de Lima; Almeida, Rosa Honorato de; http://lattes.cnpq.br/431929957265752; http://lattes.cnpq.br/3972659364735180Research related to the identification of invasive plants is so far unknown for the culture of cactus in the semi-arid northeast. Therefore, the present study aimed to evaluate the weed community under different cultivation conditions through a phytosociological survey. The experiment was carried out in an experimental area located at the Universidade Federal Rural de Pernambuco, which has been cultivated with forage cactus (Orelha de Elefante Mexicana) and vip ferocious hybrid son, distributed in six treatments: exclusive cactus with and without mulch; palm intercropped with corn with and without mulch; and the condition of exclusive corn with and without mulch. Based on the data obtained, the following phytosociological parameters were calculated: frequency; relative frequency; density; relative density; abundance; relative abundance; and the importance value index. There was a need for greater attention in the area for the management of the poaia-rasteira (Richardia grandiflora (Cham. & Schltdl.) Steud.), which obtained the highest frequencies and importance value index in most conditions of cultivationItem Desempenho agronômico de clones de palma forrageira em função de cobertura do solo em ambiente semiárido(2021) Cruz Junior, Cláudio Balbino da; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/7498202191042887The palm is used in the feeding of ruminants, given the high yield of phytomass, high energy value and full adaptation to semi-arid environments. Mulching is a technique widely used in agriculture, recommended mainly for semi-arid regions, as it increases soil water retention, increases fertility through the supply of organic matter, improves its physical properties and mitigates the effects of erosion, covering the surface of the soil, totally or partially. In this way, the effects of mulch on the growth and productivity characteristics of forage palm clones (Opuntia stricta and Nopalea cochenilifera (L.) Salm-Dyck) and on the physical-hydric properties of the soil were evaluated. The experiment is being carried out under field conditions (rainfed) in the experimental area of the Forage Studies and Research Group (GEFOR), located at the Federal Rural University of Pernambuco, Serra Talhada Academic Unit (UFRPE – UAST), Serra Talhada, PE (7º58'20 ”South; 38º17'32” West and Altitude 499 m). The average annual rainfall is around 632 mm and the average monthly air temperature ranges between 23.6 and 27.7 ° C. According to Köppen, the local climate is BSwh ’. A randomized block design (DBC) in a 3 x 3 factorial scheme was used, with three forage palm clones resistant to carmine cochineal [Mexican Elephant Ear (Opuntia stricta), Sweet Miúda (Nopalea cochenillifera (L.) Salm-Dyck) and Doce Gigante (Nopalea cochenillifera (L.) Salm-Dyck)] and three cultivation systems [conventional system with bare soil (without mulch), partial mulch (0.30 m on each side of the row) and total soil mulch], with six replications. Structural parameters are being evaluated monthly in the cladode and in the plant of forage palm clones. To assess the soil's physical-hydric properties, soil density, sorbity, porosity and soil resistance to penetration were measured. The data were submitted to the normality test (Shapirowilk), homoscedasticity (Cochran), analysis of variance (5% F test), Tukey test (5%) for comparison of means and regression analysis. Analyzing the number of total forage palm cladodes (N. Cochenillifera and Opuntia stricta), there is superiority (P <0.05) of the clone Doce Miúda in relation to the clones Doce Gigante and Mexican Elephant Ear, regardless of the mulch in the soil . Therefore, it was possible to verify that the clones Orelha de Elfante Mexicana and Doce Gigante have an average primary cladode length and width greater than that of the clone Doce Miúda, which in turn demonstrates greater plant width and a greater total number of cladodes.Item Respostas agronômicas do feijão caupi (Vigna unguiculata (L.) Walp.) sobre diferentes proporções: solo e esterco suíno em dois sistemas de cultivo(2019-07-17) Jesus, Maria da Saúde Santos de; Simplício, Josimar Bento; http://lattes.cnpq.br/1876691945804390Cowpea is a food crop grown in several Brazilian regions, rich in protein is one of the most important legumes and even in soils of low fertility, regions of high temperatures and conditions of water stress produces well. The area cultivated with cowpea in Brazil for the 2017/2018 harvest was approximately 1,440,000 ha, with the Northeast region having the largest planting area, 404,20 thousand ha. Given its great importance for the Northeast region and considering a crop that presents rapid expansion throughout Brazil, it is also considered as one more option for export culture. The creation of confined animals grows every year and this growth favors a considerable volume of waste that if thrown into the environment, can cause damage to this environment. In this sense, the present research proposed to evaluate in a 2x3x2 factorial scheme the behavior of two Creole varieties of cowpea, LA2017 and CB2017, originating from communities of rural producers in the municipality of Santa Cruz da Baixa Verde - PE, The authors present three proportions of pork soil and manure, in two culture conditions, with and without dead cover, in experimental design of casualized blocks, in the experimental area of the Academic Unit of Serra Talhada (UAST), in the Sertão do Pajeú micro-region. By means of the results observed, it was concluded that LA2017 presented superior behavior in the cultivation system with dead cover of 35% for the weight of pods per plant. While the CB2017 presented more significant performance in the cultivation system without dead cover. The proportion with 100% pig manure increased by up to 27% the weight of seeds when compared to the control, proportion 100% soil. Overall, the presence of manure increased the development of cowpea plants.Item Características estruturais de desmanthus pernambucanus em função da cobertura morta com folhas de nim e ciclos de corte em ambiente Semiárido(2019) Rodrigues, Maria Geane da Silva; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/5611482938071300The research about forage species adapted to semi-arid conditions is very important, considering that this region has dry periods and at this moment, is required for alternative of feeding for herds. However, to use species such a jureminha, is required to know about the managemant and cultivation to succeed in this production. However, the aim of this study is to evaluate the structural characteristics of jureminha cultivated under Semiarid. The experimente was conducted in the Federal Rural University of Pernambuco – Academic unit of Serra Talhada in the period from march to august, 2017, in a completely randomized design with three replications, where the treatments were the presence or not of dead cover based on neen leaves. The variables that were measured: plant height; secondary branch length; sheet length and width; stalk diameter; diameter of the secondary branch; growth rate of these structures; number of leafs and leaf longevity, number of shoots and reproductive structures (pods, flowers and flower bud). The treatments with and without mulches of Neen leafs had an effect on the variables: stalk diameter, that was 28% higher without mulches of Neem; secondary branch length 37% higher with mulches; sheet length and leaf longevity that was 19% and 15% higher respectively with mulches. The cutting cycle showed greater effect than mulch, reflecting a need for further studies to determine the best frequency and cut intensity to be adopted for the mimosa.Item Eficiência do uso da água e nutrientes da palma forrageira sob diferentes regimes hídricos e sistemas de plantio(2018) Assís, Méry Cristina de Sá; Silva, Thieres George Freire da; http://lattes.cnpq.br/0213450385240546; http://lattes.cnpq.br/6998116555134928Forage cactus is a crop widely used in Brazilian semi-arid region animal production systems, since it presents great adaptation to this region. Thus, the objective of this work was to analyze water efficiency and nutrient use of forage cactus submitted to different water regimes and planting systems. The experiment was carried out in Serra Talhada - PE, from 11/2014 to 11/2015, with "Orelha de Elefante Mexicana" clone forage cactus and cv. SF-15 forage sorghum distributed in randomized blocks, with 4 replications, in a 5x4 factorial arrangement, with five water blades (0%, 25%, 50%, 75% and 100% of reference evapotranspiration - ETo) and four planting systems (exclusive forage cactus, exclusive sorghum, forage cactus-sorghum consortium and palm with cover. The crops productivity was obtained at harvest time and then, efficiency indicators of water use were calculated relating crop productivity in water blade systems, and nutrient use efficiency, relating nutrient productivity to water blades. There was no interaction between water slide and water and nutrient efficiency planting systems use for N, P, K, B, Mn, Zn and Na, however it was observed that higher efficiency of water use at water blades occurred in dry or irrigated condition based on ETo 25% and between the systems, exclusive forage cactus has lower efficiency. In relation to nutrients when influenced by slides under lowest water conditions (dryland and ETo 25%) highest efficiencies are obtained, and when it comes to planting system exclusive forage cactus has the lowest efficiency. There was interaction between water blade and planting system for nutrient utilization Ca, Mg, S, Cu and Fe, being observed a greater influence of the planting system than of water blade system. Considering the water use efficiently based on dry matter, even when there was no interaction between planting systems and water blades, forage cactus planting, forage cactus intercropped with sorghum and forage cactus with cover systems are more efficient than exclusive forage cactus since forage cactus should not be fed to animals as an exclusive diet, the forage cactus-sorghum consortium becomes an efficient alternative to overcome this limitation. The application of 208.3 mm of complementary water distributed regularly during greatest deficit period promotes an increase in forage cactus green matter yield and green and dry sorghum matter. It is indicated its use mainly in forage cactus- sorghum system, since the sorghum has less water use efficiency. Mulching use, consortium with sorghum, as well as complementary irrigation with 208.3 mm in forage cactus cultivation Opuntia stricta (Haw.) Haw., are efficient strategies to promote forage production improvements. The Mulching use promotes greater extraction of nutrients by forage cactus, as well as promotes increased productivity.