Open Access Original Research Article

Effect of Nitrogen Fertilization on the Growth and Quality of Tamarind Seedlings Irrigated with Saline Water

Reynaldo Teodoro de Fatima, Maria de Lourdes Gomes da Silva, Jackson Silva Nobrega, Reginaldo Gomes Nobre, Pollyanna Freire Montenegro Agra, Francisco Romário Andrade Figueiredo, Jean Telvio Andrade Ferreira, Márcia Paloma da Silva Leal, Fabiano Simplicio Bezerra

Journal of Experimental Agriculture International, Page 1-12
DOI: 10.9734/jeai/2019/v37i530277

Aims: The objective of this work was to evaluate the effect of nitrogen fertilization on the production of Tamarindus indica L. seedlings irrigated with saline water.

Study Design:  A randomized complete block design was used in a 4 x 4 factorial scheme, whose factors were the electrical conductivity levels of the irrigation water.

Place and Duration of Study: The work was conducted under protected environment conditions (greenhouse) at the Federal University of Campina Grande, Center for Agro-Food Sciences and Technology, Campus of Pombal-PB, Brazil, in the period from January and March 2017.

Methodology: Effects of doses of 0, 100, 200 and 300 mg of nitrogen (N) dm-3 and electrical conductivity levels of the irrigation water (ECw) (0.3, 2.1, 3.7 and 5.2 dS m-1) on growth of Tamarindus indica L. have been studied.

Results: The growth of the seedlings was reduced by the increase of the electrical conductivity of the irrigation water, however, irrigation with ECw water of 2.15 dS m-1, promotes acceptable reductions of 10% in the morphology of the tamarind tree.

Conclusion: The use of nitrogen fertilization with urea did not attenuate the deleterious effects of irrigation water salinity or promoted improvements of the quality of the tamarind seedlings.

Open Access Original Research Article

Floristic Composition and Phytosanitary State of Arboreal Coverage in the Urban Park of City of Recife, Pernambuco

Valdemir Fernando da Silva, Maria José de Holanda Leite, Joselane Priscila da Silva, Adriana Miranda de Souza, Lucicleiton Leandro da Silva de Melo, Luiz Carlos Marangon, Ana Licia Patriota Feliciano Marangon

Journal of Experimental Agriculture International, Page 1-10
DOI: 10.9734/jeai/2019/v37i530278

The process of disordered urbanization was reduced drastically as the natural areas, which formerly was necessary, the current times of occurrence of empty spaces, which was not different in the City of Recife, but not the District of Dois Irmãos. With the purpose of protecting a fragment of the Atlantic Forest and reducing the pressure on the environment, a state conservation unit was created called Dois Irmãos State Park (PEDI). In this perspective, the study had an objective of surveying the species of shrubs and the analysis of the phytosanitary present in the arborization of the zoological sector of the State Park of Dois Irmãos. With the objective of subsidizing the promotion and development of activities related to environmental education. The survey of plants was made from new census models. In this inventory 369 arboreal individuals were present at the PEDI Zoo, belonging to 25 botanical families, 48 ​​genera and 60 species. Among these are the species, two were of gender level and one was classified as indeterminate. Of the species studied, 70% are natural, 25% exotic and 5% remain unclassified. Regarding plant health, 81.57% of the population is in good condition, 3.52% regular and 14.9% bad. From the DAP and the DAP, it is possible to infer that the data is compiled by processes in the adult phase. It is hoped that this is a game of the child by the Park, in order to promote and disseminate the knowledge of the species inserted in it, thus seeking to raise awareness of the benefits generated by them.

Open Access Original Research Article

Complementary Application of Inoculant in Post-emergence on Soybean Crop

Ivanildo Guilherme Henrique, Cassiano Spaziani `Pereira, Amauri Júnior Rosalino, Vinícius Henrique da Silva, Bruno Conceição de Veiga, Adriano Alves da Silva, Cristiane Ramos Vieira

Journal of Experimental Agriculture International, Page 1-11
DOI: 10.9734/jeai/2019/v37i530279

Objective: Inoculation is an important agricultural practice in soybean cultivation that guarantees high productivity without the external input of nitrogen. The objective of this study was to evaluate if the complementary of liquid inoculant (Bradyrhizobium japonicum), via leaf, in different times and different application rates, affects the nodulation, plant growth and soybean productivity.

Study design: A randomized complete block design (RCBD) was used, with four replications, in a 5x3 factorial scheme, evaluating the complementary inoculant application, via foliar (0; 75; 150; 225 e 300 mL ha-1), in three stages of vegetative development of the crop (V2, V4 e V6).

Location and duration of the study: The study was performed in a commercial area, in the municipality of Sinop, in the northern of Mato Grosso State, between October 2017 and February 2018.

Methodology: The cultivation was in soil classified as Red-yellow Latosol with of clayey texture, was in a direct seeding system, using the cultivar NS7901RR. The seeds used were treated and inoculated at sowing, with turfous inoculant and liquid. The experimental units received the complementary applications of inoculant, via pulverization, at 15, 21 and 28 days after emergence, according to the treatment.

Results: It was verify that the different times of application of foliar inoculant, does not condition significant differences to the parameters measured in this study. The complementary inoculant application affected, significantly, the leaf chlorophyll index (P <0.05), as well as the dry matter mass of the plants (P <0.001). Up to 300 mL ha-1, a gradual increase in grain yield was verified.

Conclusion: The complementary supply of liquid inoculant (B. japonicum), via foliar, in different rates application, affects the nodulation and development of the plants and the productive yield of the crop.

Open Access Original Research Article

Effect of the Storage Period and Fungicide Treatment on the Physiological and Sanitary Quality of Soybean Seeds

Thalles Alexandre Xavier Pereira, Pedro Silvério Xavier Pereira, Dejânia Vieira de Araújo, Dryelle Sifuentes Pallaoro, Aloisio Bianchini, Rosana Sifuentes Machado

Journal of Experimental Agriculture International, Page 1-13
DOI: 10.9734/jeai/2019/v37i530280

This study evaluated the effect of storage period on the physiological and health quality of soybean seeds. The experiment was arranged in a factorial scheme (4 x 2 x 2) with four periods of storage (0, 2, 4 and 6 months), two soybean cultivars (‘BRS Pintado’ and ‘MSOY 8866’) and treated and untreated seeds with the formulated mixture of active ingredients pyraclostrobine (25 g i.a L-1) + Methyl-Thiophanate (225 g i.a L-1) + fipronil (250 g i.a L-1) in a 0,1 L.ha-1 dosage of the commercial product. Concerning health, there was a reduction of Aspergillus spp., Cercospora kikuchii, Colletotrichum dematium var. truncata and Fusarium spp fungus when periods of storage were increased independently if storage interactions occurred due to cultivar, treatment and/or all analyzed factors. cv. ‘BRS Pintado’ stood out by presenting lower results on the occurrence of fungi. The isolated cultivar factor presented a significant result concerning the physiological quality and c.v. ‘BRS Pintado’ showed better results in the variables: germination of seeds from the speed aging test, germination, shoot lenght from the speed emergence test, and both shoot dry matter and root dry matter of germination. There was an interaction for the speed emergence index variable between storage versus cultivar, in which cv. ‘BRS Pintado’ achieved better average results in all periods of storage. The storage factor alone was significant for shoot length of plants from the speed emergence index, the shoot plant dry matter from the emergency speed index, root dry matter of seedling germination and germination of seeds subjected to accelerated aging. The isolated treatment factor was significant in the germination variable and the untreated seeds showed better results in relation to the treated ones. However, the difference of these values would not be significant at the field. Treated seeds showed better results compared to untreated ones in most of the analyzed variables and their association with seeds storage did not affect the physiological quality evaluation during six months of evaluation, enabling the maintenance of the health quality of seeds.

Open Access Original Research Article

Spaces of Environmental Conflicts in the Buffer Zones for the Protected Area of the State Park Mata Do Pau Ferro in Areia – Paraiba

Ailson de Lima Marques, Debora Coelho Moura, Cássio Ricardo Gonçalves da Costa, José Ayron Moraes de Lima, Ana Luíza de Melo Lucena, Joabe Freitas Crispim, Jaltiery Bezerra de Souza

Journal of Experimental Agriculture International, Page 1-11
DOI: 10.9734/jeai/2019/v37i530281

The National System of Conservation Units has defined a buffer zone as an area around a Conservation Unit, where activities must be subject to specific standards, in order to minimize negative impacts on ecosystems. Based on this discussion, this research uses remote sensing and geoprocessing and has as objectives: to map the use and occupation of the land, to simulate the buffer zone and to characterize the spaces of social and environmental conflicts of the State Park Mata do Pau Ferro, Areia-PB. Through the mapping of use and occupation was identified that the Park has 600 ha. Of these, 492 ha (82%) present a spectral response of forest vegetation (Seasonal Semideciduous Forest) in different successional stages, 54 ha (9%) represent clearings, with pioneer vegetation (Poaceaea and shrub), which present the same response spectral of crops and pastures, and 54 ha (9%) is the Vaca Brava reservoir, which presents its Permanent Preservation Area. The spaces of conflict are the protagonists of the buffer zone and summed represent 600 ha or 75% of the area. This fact can be considered an aggravating factor because all these economic activities are not being monitored and spatially symbolize a high degree of edge effect. Integrated management between the Conservation Unit and its buffer zone in this situation is urgent and should involve the surrounding social sectors, especially rural producers. An alternative would be the payment for Environmental Services and incorporate the agroforestry system.