The use of organic fertilizers can improve the chemical, physical, and biological properties of the soil, with their use implying low environmental impact. This study aimed to evaluate the yield and quality of yellow passion fruit grown in an organic system associated with irrigation and input levels. A randomized complete block design in a 3x2 factorial arrangement with four replications was adopted. The factors evaluated were: three input levels (fertilizers and alternative pesticides) and the presence or absence of irrigation. Fertilization consisted of the application of 5, 10, and 15 liters of organic compost per plant and 500, 1,000, and 1,500 g of lime per plant, corresponding to input levels 1, 2, and 3, respectively. Topdressing fertilization was split into two applications, corresponding to 118, 235, and 353 g per plant of thermophosphate and 59.1, 118.20, and 176.40 g per plant of potassium sulfate for levels 1, 2, and 3 of input application, respectively. The alternative pesticides were sprayed every 30, 15, and 7 days for levels 1, 2, and 3, respectively. The number of fruits per plant and the yield increased using the input level 3 associated with irrigation. In the absence of irrigation, input levels 2 and 3 increased the content of soluble solids. The titratable acidity, TSS/TTA ratio, and the fruits classified as extra did not differ significantly between treatments. Input levels 1 and 2 associated with the absence of irrigation increased the percentage of fruits classified as commercial.
The aim of this work was to evaluate the effect of irrigation and deep planting of tall yellow passion fruit seedlings in the organic system on fruit quality and productivity. A randomized complete block design with 2x4 subdivided plots, with 8 treatments and 4 blocks was used, with irrigated and rainfed systems being plots and 4 planting depths (0.20 m, 0.40 m, 0.60 m and 0.80 m) subplots. Seedlings aged 90 days and 2 m in height were used. Before planting, all stem leaves were removed from seedlings to be buried and to IBA at concentration of 4,000 mg kg-1 was applied. The number of fruits per plant, average fruit mass and total productivity and of 1st and 2nd crops, as well as total soluble solids (TSS), total titratable acidity (TTA), ratio (TSS/TTA), commercial and equatorial diameter classification were estimated. Irrigated planting at depths of 0.20 m and 0.40 m was more productive in the first crop, but there was no difference in the total productivity and in the second crop. Neither irrigation nor plant depth altered the chemical quality of fruits and commercial classification.
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.
This study aimed to evaluate the effect of the combination between irrigation, semiprotected cultivation, and artificial pollination on the yield, number of fruits, and mass of yellow passion fruit grown under organic production. The experimental design was in randomized blocks set up in split plots (2x2x2) with eight treatments and four replications. The plot consisted of irrigation or rainfed conditions, the second factor corresponds to plant cover with plastic or direct sunlight, and the third factor refers to natural or artificial pollination. Irrigation was performed using a micro-sprinkler system, and pollination was either manual or natural (entomophilous). The evaluated parameters were the number of fruits per plant, the mean fruit mass, and the total and commercial yields in two crop years: from January to August 2019 and from September 2019 to August 2020. The yield per hectare and the number of fruits per plant were not affected by irrigation and semi-protected cultivation. Artificial pollination increased the passion fruit yield by up to 31% under organic cultivation. The number of fruits per plant did not significantly change with the treatments. However, there was a positive linear correction with the yield. The mean fruit mass is higher using the combination between semi-protected cultivation, rainfed conditions, and artificial pollination or direct sunlight with natural pollination regardless of irrigation.
O objetivo deste trabalho foi avaliar a viabilidade econômica do plantio profundo de mudas altas de maracujazeiro amarelo em sistema de cultivo orgânico e irrigado. O delineamento utilizado foi em blocos casualizados com parcelas subdivididas 2x4, com 4 blocos, sendo as parcelas os cultivos irrigado e sequeiro e as subparcelas as 4 profundidades de plantio (0,20 m; 0,40 m; 0,60 m e 0,80 m). Antes do plantio, foi aplicado AIB na concentração de 4.000 mg kg-1 no caule das mudas de plantio profundo. Foram avaliados: produção de cobertura operacional e total, custo fixo médio, custo variável médio, custo total médio, relação benefício custo, lucratividade, índice de rentabilidade, remuneração da mão de obra familiar, receita líquida e receita total. O plantio do maracujazeiro amarelo com utilização da irrigação aumenta o custo de produção, mas proporciona rendimentos econômicos positivos. O plantio em sequeiro é mais lucrativo, devido ao menor dispêndio com insumos e equipamentos. O custo total médio (R$/kg) do fruto provenientes de plantas sob plantio nas profundidades de 0,40; 0,60 e 0,80 m, comparado ao plantio raso de 0,20 m, é de -0,6%; +12,6% e +49,7%, respectivamente, e a receita líquida inferior em 2,8%; 12,6% e 38,5%.
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