TCC - Bacharelado em Agronomia (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2928
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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 Fenologia e desempenho agronômico de clones de palma forrageira durante o 2º ciclo produtivo(2021-02-23) Silva, José Orlando Nunes da; Silva, Thieres George Freire da; http://lattes.cnpq.br/0213450385240546; http://lattes.cnpq.br/1780809142332408The selection of species of forage plants adapted to the Semi-arid climate reduces the impacts promoted by climatic adversities on livestock. This study investigated the performance of six forage cactus clones irrigated in a semi-arid environment. The experiment was conducted at the Center for International Reference for Agrometeorological Studies of Palma and other Forage Plants - Centro REF, Serra Talhada - PE, Brazil. The clones evaluated were: Mexican Elephant Ear (Opuntia stricta (Haw.) Haw.), African Elephant Ear (Opuntia undulata Griffiths), V19 (Opuntia larreri), Miúda (Nopalea cochenillifera (L.) Salm-Dyck), IPA Sertânia (Nopalea cochenillifera (L.) Salm-Dyck) and F8 (Opuntia atropes), arranged in a randomized block design, with three replications, and the evaluations were performed at the clone level. Irrigation was based on 120% of crop evapotranspiration (ETc), adopting the crop coefficient (Kc) of the forage cactus of 0.52. The irrigation system adopted was by drip, with water from artesian well, presenting average electrical conductivity of 1.6 dS m-1. During the experimental period, accumulated precipitation was 1214.5 mm and the total applied irrigation depth was equal to 532.76 mm, totaling 1747.22 mm. For performance analysis, we analyzed: phenology, clade area index, plant stand mortality and green matter and dry matter yield. The data were submitted to variance analysis and Scott-Knott test at the level of 5% probability. The clones OEM and OEA presented fresh matter yield (Y. MF) 3.22 times higher than the average of the other clones (V19, MIU, IPA and F8), for dry matter yield (Y. MS) the averages were 3.39 times higher. Clone F8 showed the highest percentage of plant stand mortality (96.30%). For IAC, there was no significant difference between clones. The number and duration of phenophases varied according to the morphological growth characteristics of each clone. The clones Orelha de Elefante Mexicana (Opuntia stricta) and Orelha de Elefante Africana (Opuntia undulata) presented the highest productive potential compared to the other clones, being the clones most recommended for cultivation in a semi-arid environment.Item Práticas agrícolas combinadas em ciclos sucessivos de milheto e de palma forrageira: filocrono, caracteristicas estruturais e suas relações com a produtividade(2021-02-23) Silva, Gabriel Italo Novaes da; Jardim, Alexandre Maniçoba da Rosa Ferraz; http://lattes.cnpq.br/9981205244282499; http://lattes.cnpq.br/6333786792535599The Brazilian semiarid region has low rainfall, causing an impact on the production of forages. Thus, the objective of the study was to evaluate the influence of different agricultural practices under the structural characteristics, phyllochron and productivity of forage cactus and millet in successive cycles. The experiment was carried out from June 2016 to June 2020, with a randomized block design and six treatments: exclusive cactus with and without mulch, exclusive millet with and without mulch and intercropped with and without mulch dead (PECC, PESC, MECC, MESC, PMCC and PMSC, respectively). forage cactus, clone Orelha de Elefante Mexicana were conducted; and nine cycles of millet, cultivate BRS1501 for the first three and the last six cycles to cultivate IPA Bulk117 1, irrigated by drip system three times a week (monday, wednesday and friday). To determine the structural characteristics, monthly biometrics were performed, while forage yield, the cultures were harvested. The phyllochron was determined by the inverse of the rate of emission of cladodes and leaves, which is obtained by the angular coefficient of the linear regression between the total number of cladodes (or leaves) and the accumulated days degrees. With the data on structural characteristics and performance, principal component analysis (PCA) was applied. The adopted systems had almost no influence on the structural characteristics of the palm, and of the millet, although when intercropped there was a reduction of these measures in the palm and in the millet due to greater competition. The cactus phyllochron did not suffer much influence from the systems, whereas the millet phyllochron suffered a reduction when submitted to the consortium. The ACP showed that most of the biometric variables influenced the yield, phyllochron of millet and that the ACP in the palm showed that the adoption of mulch has a greater relationship with the productivity of the palm and already for the millet what influences is the biometric variables and not the system of production.