Effect of humic substances and nitrogen fertilization on yellow passion fruit cultivation in the Brazilian semiarid region

The research had as objective to study the influence of the doses of nitrogen, phosphorus and potassium on soil fertility and nutritional status of yellow passion fruit plants. The experimental design was in randomized blocks in an incomplete fractioned factorial 1/2 (4 × 4 × 4), with four doses of N (150, 300, 600 and 1200 Kg-1 ha-1 yr-1 N); four doses of P2O5 (200, 400, 800 and 1600 kg-1 ha-1 yr-1) and four doses of K2O (100, 300, 500 and 700 kg-1 ha-1 yr-1). The fertilizers used were the ammonium nitrate = 32% N; triple superphosphate = 44% P2O5 and potassium chloride = 60% K2O. In the fertility of the nitrogen fertilization increased the content of phosphorus and sulfur. The doses of P2O5 increased the concentration of P in the soil. The doses of K2O influenced the increase in the content of K in the soil in the harvest 2013/2014. There was an interaction of the doses of N and K2O in the availability of K in the soil in the harvest 2012/13 with the maximum levels of K, in the doses of 200-400 kg N ha-1 and 600 to 700 kg ha-1 of K2O. In the nutritional state the yellow passion fruit plants was influenced by the doses of N for the sulfur content of the leaves. The maximum content of S leaf concentration of 3.63 g kg-1 was obtained in the dose estimated at 1120 kg ha-1 of P2O5.

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Nitrogen fertilization for noble garlic production in high altitude regions of the Brazilian semiarid region

Científica ◽

10.15361/1984-5529.2019v47n1p62-69 ◽

2019 ◽

Vol 47 (1) ◽

pp. 62

Author(s):

Gabrielly Paula de S. A. Henriques ◽

Maria Zuleide De Negreiros ◽

Francisco Vilela Resende ◽

Welder De Araújo de Rangel Lopes ◽

Renan Da Cruz Paulino

Keyword(s):

High Altitude ◽

Nitrogen Fertilization ◽

Semiarid Region ◽

Brazilian Semiarid

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Nitrogen fertilization and spacing in productivity and quality of passion fruit implanted with advanced seedlings

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452021004 ◽

2021 ◽

Vol 43 (5) ◽

Author(s):

Gabriel Stefanini Mattar ◽

Luís Felipe Villani Purquerio ◽

Laura Maria Molina Meletti ◽

Sílvia Regina de Toledo Valentini ◽

Laís Fernanda de Paula ◽

...

Keyword(s):

Nitrogen Fertilization ◽

Block Design ◽

Passion Fruit ◽

Chemical Quality ◽

Maximum Production ◽

Physical Chemical ◽

Randomized Block Design ◽

Management Techniques ◽

Yellow Passion Fruit

Abstract The use of advanced seedlings associated with the annual cultivation of passion fruit are important management techniques for living with the fruit-hardening virus (FEV). However, this technology still needs information on nitrogen fertilization and spacing between plants, so that it is possible to recover crop’s productivity. The objective of this research was to identify the nitrogen dose (N) and the most suitable spacing for annual orchards installed with advanced seedlings (1.2 m high) of yellow passion fruit. The experiment was carried out in the field, in Mogi Mirim, SP, between October 2017 and July 2018. A randomized block design was used in subdivided plots; the treatments were doses of N in coverage such as 0, 60, 120, 180 and 240 kg ha-1 and spacing between plants of 2.0 and 4.0 m and 3.0 m between lines. The dose found for maximum production, 15.4 kg of fruit pl-1, and adequate physical-chemical quality of the fruit for the yellow passion fruit was 130.7 kg ha-1 of N. The most densified spacing, of 2 x 3 m, provided greater productivity and number of thousand fruits per hectare, respectively, 20.7 t ha-1 and 139.5 thousand fruits ha-1.

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CELL DAMAGE AND BIOMASS OF YELLOW PASSION FRUIT UNDER WATER SALINITY AND NITROGEN FERTILIZATION

Revista Caatinga ◽

10.1590/1983-21252020v33n319rc ◽

2020 ◽

Vol 33 (3) ◽

pp. 757-765

Author(s):

JOSÉ ALBERTO CALADO WANDERLEY ◽

MARCOS ERIC BARBOSA BRITO ◽

CARLOS ALBERTO VIEIRA DE AZEVEDO ◽

FRANCISCO DAS CHAGAS SILVA ◽

FAGNER NOGUEIRA FERREIRA ◽

...

Keyword(s):

Cell Membrane ◽

Leaf Area ◽

Irrigation Water ◽

Nitrogen Fertilization ◽

Cell Damage ◽

Passion Fruit ◽

Water Salinity ◽

Irrigation Water Salinity ◽

Dry Biomass ◽

Yellow Passion Fruit

ABSTRACT The aimed of this study was to evaluate the attenuating action of nitrogen doses on leaf cell membrane damage, dry biomass production and leaf area in the formation of yellow passion fruit seedlings irrigated with saline water. Treatments were arranged in a randomized block design, in split plots, corresponding to five levels of irrigation water salinity (plot) (ECw) (0.3; 1.0; 1.7; 2.4 and 3.1 dS m-1) and five doses of nitrogen fertilization (subplot) (60; 80; 100; 120 and 140% of 300 mg of N dm-3), which were repeated in five blocks. Plants were grown in pots (Citropote®) with a volume of 3,780 mL, which were filled with a mixture of soil, aged bovine manure and sawmill residue (shaving) in a ratio of 2:1:0.5, respectively. Waters with different levels of salinity were applied from 40 to 85 days after sowing, when the plants were in transplanting conditions. At 85 days after sowing, the percentage of cell damage based on electrolyte leakage, variables of dry biomass, leaf area and specific leaf area were evaluated. Increment in irrigation water salinity reduces the biomass accumulation of yellow passion fruit seedlings; The increase in nitrogen dose did not mitigate the effect of salinity, which reduced cell membrane integrity, making the plant more sensitive.

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Nitrogen as a mitigator of salt stress in yellow passion fruit seedlingss

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n2p611 ◽

2019 ◽

Vol 40 (2) ◽

pp. 611 ◽

Cited By ~ 2

Author(s):

Marlene Alexandrina Ferreira Bezerra ◽

Walter Esfrain Pereira ◽

Francisco Thiago Coelho Bezerra ◽

Lourival Ferreira Cavalcante ◽

Sherly Aparecida da Silva Medeiros

Keyword(s):

Leaf Area ◽

Ammonium Sulfate ◽

Irrigation Water ◽

Nitrogen Fertilization ◽

Quality Standard ◽

Passion Fruit ◽

Irrigated Agriculture ◽

Leaf Nitrogen Content ◽

Yellow Passion Fruit

The poor chemical quality of water, especially in arid and semiarid regions, almost always precludes the practice of irrigated agriculture, thus demanding the adoption of techniques that mitigate the deleterious effects of excess salt on soil and plants. The aim of this research was to evaluate the effectiveness of nitrogen fertilization in mitigating the negative effects of excess salt in irrigation water on the growth of yellow passion fruit seedlings grown in a greenhouse in plastic tubes containing 0.65 dm3 of substrate. The treatments were organized in randomized blocks, in accordance with a 5 × 3 factorial scheme – five electrical conductivities of irrigation water (0.3, 1.0, 2.0, 3.0, and 4.0 dS m?1) combined with three levels of nitrogen fertilizer (no nitrogen fertilization and 150 mg dm?3 of N derived from either ammonium sulfate or urea). Evaluations were performed 80 days after sowing and consisted of measuring the seedling height, stem diameter, number of leaves, leaf area, leaf nitrogen content, leaf concentration of chlorophyll a and b and total chlorophyll, specific leaf area, leaf area ratio, and Dickson quality index. An increase in the electrical conductivity of irrigation water hindered the production of yellow passion fruit seedlings. Nitrogen fertilization, with urea or ammonium sulfate, mitigated the effects of irrigation water salinity and favored the growth and quality of yellow passion fruit seedlings. Yellow passion fruit seedlings with a minimum quality standard (DQI) can be produced with irrigation water with salinity of 1.8 dS m?1, which means they can be considered as moderately sensitive. The higher quality provided by nitrogen to the yellow passion fruit seedlings made them more tolerant to salinity, allowing the use of water with salinity of 2.1 and 2.5 dS m?1 under fertilization with ammonium sulfate and urea, respectively.

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The use of polyaluminium chloride as a restoration measure to improve water quality in tropical shallow lakes

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x8416 ◽

2018 ◽

Vol 30 (0) ◽

Author(s):

Fabiana Araújo ◽

Hélio Rodrigues dos Santos ◽

Vanessa Becker ◽

José Luiz Attayde

Keyword(s):

Water Quality ◽

Quality Improvement ◽

Humic Substances ◽

Chlorophyll A ◽

Shallow Lakes ◽

Semiarid Region ◽

Water Quality Improvement ◽

Brazilian Semiarid ◽

Polyaluminium Chloride ◽

Eutrophic Shallow Lakes

Abstract Aim The aim of this study was to evaluate the performance of the coagulant Polyaluminium chloride (PAC) in water quality improvement of six eutrophic shallow lakes in Brazilian semiarid region. Methods We evaluated the effect of PAC in turbidity, humic substances (UV254), total phosphorus and chlorophyll-a concentration through laboratory jar tests. Results The results showed that PAC had a good performance in reducing total phosphorus concentrations and turbidity, with a reduced efficiency in removing chlorophyll-a and humic substances by sedimentation of flocks formed. Conclusions Addition of PAC is a potential tool for water quality improvement of eutrophic shallow lakes in Brazilian semiarid region but its efficiency depends on the pH and particulate and dissolved organic matter concentration in the lake or reservoir water.

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Chemical soil and leaf properties in yellow passion fruit cultivation with organic fertilization

Comunicata Scientiae ◽

10.14295/cs.v11i0.3342 ◽

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 ◽

...

Keyword(s):

Organic Matter ◽

Sandy Loam ◽

Chemical Properties ◽

Passion Fruit ◽

Organic Fertilization ◽

Nutrient Contents ◽

Organic Cultivation ◽

Fruit Cultivation ◽

Organic Compost ◽

Yellow Passion Fruit

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.

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Growth of Okra Under Nitrogen Rates and Wastewater in the Brazilian Semiarid Region

Journal of Agricultural Science ◽

10.5539/jas.v11n5p408 ◽

2019 ◽

Vol 11 (5) ◽

pp. 408

Author(s):

Aldair de Souza Medeiros ◽

Sebastião de Oliveira Maia Júnior ◽

Giordano Bruno Medeiros Gonzaga ◽

Thiago Cândido dos Santos ◽

Manoel Moisés Ferreira de Queiroz ◽

...

Keyword(s):

Natural Resources ◽

Nitrogen Fertilization ◽

Block Design ◽

Domestic Wastewater ◽

Treated Wastewater ◽

Semiarid Region ◽

Semiarid Regions ◽

Randomized Block Design ◽

Brazilian Semiarid ◽

Nitrogen Rates

Water is one of the most important natural resources, especially for semiarid regions where it is very limited. Thus, some alternatives to preserve water are necessary. In this sense, we aimed to evaluate the effect of irrigation with post-treated domestic wastewater associated with different nitrogen rates on the growth of okra in the semiarid region of Brazil. The experiment was performed in the municipality of Pombal, state of Paraíba, Brazil. It was used a randomized block design with six nitrogen rates (N1 = 0, N2 = 40, N3 = 80, N4 = 120, N5 = 160, and N6 = 200 kg ha-1) and wastewater corresponding respectively to 0; 25; 50; 75; 100; and 125% of the fertilization recommendation for the okra crop. In addition to these treatments, a control was added and the plants received 100% of the recommended dose of nitrogen and they were irrigated with water (IW). The control was compared with the treatments that were irrigated with wastewater and received the minimum (0%) and the recommended (100%) doses of nitrogen fertilization. The use of treated wastewater is an excellent technique for the reuse of water in semiarid regions, but it does not fully meet the okra nitrogen requirements.

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