scholarly journals Fenologia da floração e frutificação do maracujazeiro amarelo sob cultivo orgânico no sudoeste amazônico / Flowering and frutification phenology of yellow passion fruit under organic cultivation in the southwest amazon

2021 ◽  
Vol 4 (4) ◽  
pp. 4861-4876
Author(s):  
Nilciléia Mendes Da Silva ◽  
Sebastião Elviro de Araújo Neto ◽  
Luís Gustavo de Souza E Souza ◽  
Thays Lemos Uchôa ◽  
Wagner de Moura Francisco ◽  
...  

Conhecer a resposta do maracujazeiro aos efeitos das mudanças edafoclimáticas ao longo do seu ciclo e em todos os estádios do seu desenvolvimento é fundamental para estabelecer estratégias e técnicas mais adequadas, desde o plantio até o final da vida útil da cultura, para manter e ampliar os rendimentos físicos e econômicos. Nesse intuito, objetivou-se realizar a caracterização da fenologia de floração e frutificação do maracujazeiro em função da combinação de irrigação, polinização e cultivo protegido. O delineamento experimental foi em blocos casualizados em parcelas divididas (2 x 2 x 2) com oito tratamentos e quatro repetições contendo quatro plantas por unidade experimental. O ambiente protegido foi instalado na parte superior de cada espaldeiras, constituído de filme plástico aditivado transparente de 100 m como material para a cobertura. A irrigação foi do tipo micro aspersão e a polinização manual ou natural (entomófila). Avaliou-se: número médio de frutos por planta; Massa média de frutos; Sazonalidade da produção de frutos; taxa de frutificação; porcentagem de frutos abortados; taxa de refugo; número de flores por planta. Baseado neste experimento conclui-se que: o maracujazeiro não paralisa o florescimento e produção de frutos e há quatro picos de produção; A combinação da utilização da cobertura com filme plástico, polinização artificial e cultivo em sequeiro proporciona maior massa média dos frutos; A maior taxa de frutos abortados ocorre em março e nos meses de maio a julho ocorrem as maiores taxas de frutos com baixa qualidade comercial.

2019 ◽  
Vol 10 (4) ◽  
pp. 477-483 ◽  
Author(s):  
Nilciléia Mendes Silva ◽  
Sebastião Elviro Araújo Neto ◽  
Luís Gustavo De Souza Souza ◽  
Thays Lemos Uchôa ◽  
Regina Lúcia Félix Ferreira

Studies related to adaptation to the environment and different conditions of water availability contribute to decision-making regarding the management of any crop to be implanted. Accordingly, this work aimed to evaluate the yield and quality of organic yellow passion fruit cultivated in a long root system in dryland conditions. The experimental design was in randomized blocks, with five treatments and four replications with four plants each. The treatments consisted of the alteration of the length of the root system, namely: T1 = 25 cm; T2 = 50 cm; T3 = 75 cm; T4 = 100 cm; and T5 = 125 cm. At 120 days after emergence (DAE), the seedlings were transplanted to the field and the following variables were evaluated: plant height (cm) and base diameter (mm) at 120 DAE; total titratable acidity (TTA), total soluble solids (TSS), Ratio (TSS/TTA); and fruit yield. The cultivation of tall seedlings with a long root system provides the maintenance of production during the dry season. The TTA, TSS, and the ratio do not change when modifying the length of the root system, although they do change with the harvest season. The cultivation of passion fruit in an organic system using plants with a long root system with an estimated length of 114 cm provides a higher fruit yield (7,472 kg ha-1) in 22 months of cultivation.


2020 ◽  
Vol 11 ◽  
pp. e3342
Author(s):  
Waldiane Araújo de Almeida ◽  
Sebastião Elviro de Araújo Neto ◽  
Thays Lemos Uchôa ◽  
Luís Gustavo de Souza e Souza ◽  
Nilciléia Mendes Da Silva ◽  
...  

The yellow passion fruit presents a high nutritional demand, and successive cultivations in the same area lead the soil to nutritional exhaustion, creating the need for restitution through fertilizers. In the context of organic managements, alternatives must be sought, which, besides improving soil fertility, can increase the contents of soil organic matter. Therefore, this work aimed to evaluate the effect of organic basal fertilization in passion fruit cultivation on the chemical properties of the soil and nutrient contents of the plant. Two experiments were performed in two rural properties, with soils presenting sandy-loam and clay-loam texture. The experimental design was in randomized blocks (RBD), with 5 treatments and 4 blocks. The treatments consisted of the application of organic compost in different planting hole diameters: 0.4 m; 0.8 m; 1.2 m; 1.6 m, and 2.0 m, and their respective volumes of organic compost: 0.0007 m³; 0.03 m³; 0.06 m³, 0.10 m³; 0.16 m³. The chemical characteristics of the soil and the foliar content of nutrients were evaluated. Soil texture interferes with the effects of organic fertilization. Regardless of the texture, fertilization increases the contents of organic matter and P in the soil. The successive organic cultivation in a sandy-loam soil increases the content of P and provides higher foliar contents of N, P, Ca, Mg, S, B, Cu, Fe, Zn, and Na.


2016 ◽  
Vol 85 ◽  
pp. 209-214 ◽  
Author(s):  
Priscila D. Alamar ◽  
Elem T.S. Caramês ◽  
Ronei J. Poppi ◽  
Juliana A.L. Pallone

2015 ◽  
Vol 37 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sérgio Macedo Silva ◽  
Roberta Camargos de Oliveira ◽  
Risely Ferraz de Almeida ◽  
Adílio de Sá Júnior ◽  
Carlos Machado dos Santos

Abstract: Yellow passion fruit has conquered a significant position in the agribusiness of tropical fruits; therefore, farmers have been interested in expanding their groves, and technical information that guarantees the high yield of the farmings is needed. Aiming to observe factors related to the propagative material targeted at quality and maximization of the genetic potential, the objective of the study consisted in assessing germination and emergence of passion fruit seeds collected in three positions in the fruits and submitted to different methods of mucilage removal (aryl). The passion fruits were split in three parts: distal, medial and proximal and the contents of each part was divided in two. The content of each part of the fruit was submitted to mechanical and by fermentation methods for removal of aryl. It is concluded that the seed position in the fruit does not interferes with the germination. The aryl removal method by mechanical extraction affects the germination and seedling emergence.


2014 ◽  
Vol 13 (36) ◽  
pp. 3657-3665 ◽  
Author(s):  
M. M. Rego, ◽  
E. R. Rego, ◽  
L. P. U. Nattrodt, ◽  
P. A. Barroso, ◽  
F. L. Finger, ◽  
...  

2010 ◽  
Vol 41 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Nina Duarte Anaruma ◽  
Flávio Luís Schmidt ◽  
Marta Cristina Teixeira Duarte ◽  
Glyn Mara Figueira ◽  
Camila Delarmelina ◽  
...  

2018 ◽  
Vol 10 (10) ◽  
pp. 151 ◽  
Author(s):  
Adriana da S. Santos ◽  
Railene H. C. R. Araújo ◽  
Reginaldo G. Nobre ◽  
Valéria F. de O. Sousa ◽  
Marília H. B. S. Rodrigues ◽  
...  

Hydrogen peroxide (H2O2) is a molecule that can flag plants under biotic and abiotic stress conditions. Among the kinds of stress, the salinity stress is the one that most usually affects plants. Consequently, the purpose hereof was to use hydrogen peroxide (H2O2) to mitigate the possible harmful effects of salinity in yellow passion fruit seedlings. We employed a randomized block design, in a 5 × 3 factorial scheme, corresponding to five irrigation water electric conductivity levels (0.3; 1.3; 2.3; 3.3; and 4.3 dS m-1) and three hydrogen peroxide concentrations (0; 5; and 15 μmol L-1), with four repetitions. The treatments were applied foliarly 7 and 15 days after the seedlings’ germination with hand sprayers. Sixty days after sowing, we evaluated the seedlings’ growth and quality variables, which finally proved that hydrogen peroxide mitigates the harmful effect of the irrigation water’s salinity up to 2 dS m-1 in the growth of yellow passion fruit seedlings at the concentration of 5 μmol/L. Nonetheless, excessive concentrations (15 μmol L-1) associated with high salt concentrations were proven detrimental to the seedlings’ phenological growth and quality.


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