&lt;b&gt;Impact of humic substances and nitrogen fertilising on the fruit quality and yield of custard apple

Cunha, Marcelo dos Santos; Cavalcante, Ítalo Herbert Lucena; Mancin, Adriana Cristina; Albano, Francisca Gislene; Marques, Adenaelson de Sousa

doi:10.4025/actasciagron.v37i2.19511

Cited by 18 publications

(14 citation statements)

References 21 publications

(13 reference statements)

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“…Despite the low yield obtained during the 2014 season, the observed mean yield in our experiment was greater than those reported in the literature: 3.2 Mg • ha -1 (Kavati, 1997), 6.05 Mg • ha -1 (Kavati and Piza, 1997), 5 Mg • ha -1 (Costa et al, 2002), and 6.98 Mg • ha -1 (Patel et al, 2010) without humic substances; and 7.61 Mg • ha -1 with humic substances (Cunha et al, 2015).…”

Section: Resultscontrasting

confidence: 74%

Influence of Seasonality in the Production and Quality of Annona squamosa L. Fruit of Different Sizes

Moura¹,

Chagas²,

Chagas³

et al. 2019

horts

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Sugar apple fruit are widely appreciated because of their flavor and functional qualities. However, the final value of the fruit varies according to its physical, physicochemical, and organoleptic qualities. The production and attributes that make up the quality of fruit can be influenced by climatic seasonality in both seasons (dry and wet). Therefore, this work aimed to evaluate whether the production and quality of fruit production of different size classes of A. squamosa L. in two seasons are affected by climatic seasonality. The experiment consisted of a randomized block design, with 4 blocks and 10 plants per block. The variables evaluated were number of fruit per hectare, production, and yield. The postharvest evaluation of the fruit consisted of a completely randomized experimental design, in a 3 × 2 factorial scheme, which referred to the three sizes and two seasons, and evaluated fruit length and diameter; firmness; fruit, bark, and seed weight; number of seeds; soluble solids; hydrogen ionic potential (pH); titratable acidity (TA); and ratio. The 2014 season had larger fruit in relation to those of the 2015 season; conversely, it showed a lower number of fruit per plant, production, and yield, besides inferior organoleptic quality. Fruit of size class 2 stood out in the 2014 season because of their physical characteristics. However, they had inferior organoleptic quality when compared with fruit of the same size collected during the 2015 season. Fruit of size class 3 (≥8.1 cm) had greater firmness, providing longer durability and shelf life.

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Section: Resultscontrasting

confidence: 74%

Influence of Seasonality in the Production and Quality of Annona squamosa L. Fruit of Different Sizes

Moura¹,

Chagas²,

Chagas³

et al. 2019

horts

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“…The remainder is lost by leaching, especially in sandy soils (PRASAD et al, 2015), so it may contaminate water sources and groundwater (NOWAKI et al, 2017). Cunha et al (2015) point out that the use of soil conditioners to increase the efficiency in the absorption of nutrients, especially N, has been widely studied, and an alternative is the use of humic substances (HS). HS are formed by the transformation of biomolecules in the decomposition of soil organic matter, with a widely recognized influence on the chemical, physical and biological properties of the soil and, consequently, on root growth, increase of nutrient absorption and biosynthesis of chlorophylls (FERRARA; BRUNETTI, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…When evaluating the effect of HS application and N fertilization on sugar-apple fruit quality and yield, Cunha et al (2015) observed that, in plants that received HS, the contents of soluble solids (SS) in the fruits increased by approximately 2.8% after using 0 to 100 g of N per plant and decreased by 6.25% after using 100 to 250 g of N per plant, while the use of HS caused an exponential increase in the SS/TA ratio as the N levels increased.…”

Section: Introductionmentioning

confidence: 99%

Nutritional status, production and fruit quality of west indian cherry fertigated with nitrogen and humic substance

et al. 2020

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Information on humic substances (HS) associated with nitrogen fertilization in West Indian cherry is scarce in the literature. The use of soil conditioners, such as HS, can increase the efficiency in the absorption of nutrients, especially N. Therefore, the present study aimed to evaluate, in two production cycles, the fruit quality, yield and nutritional status of West Indian cherry as a function of fertigation with nitrogen (N) and HS in Petrolina-PE, Brazil. The experimental design was in split plots, with treatments distributed in 5 x 2 strips, referring to N doses (50, 75, 100, 125 and 150% of the recommended dose) and HS application (without and with), respectively, with 4 replicates and 3 plants per plot. The N source used was urea (45% N) and the HS source used was the commercial product KS100 (Omnia®), from leonardite, monthly applied at dose of 6 g plant-1. Production, yield, indices of chlorophyll a, chlorophyll b and total chlorophyll, and leaf contents of N, P, K, Na, Ca, Mg, Fe, Mn and Zn were determined. Fruits were evaluated for: pH, vitamin C, soluble solids (SS), titratable acidity (TA) and SS/TA ratio. Except for leaf N content, which increased linearly with the applied doses, the leaf contents of nutrients, production and yield of West Indian cherry showed a stochastic pattern as a function of the increase in N availability and HS application. West Indian cherry plants cultivated and fertilized according to the recommendation for the crop did not respond to the evaluated treatments. Application of humic substances and N doses did not alter the post-harvest quality of West Indian cherry fruits.

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“…Despite the exploration of custard, as well as other Annonacea of economic importance which are not new in Brazil, information regarding the nutritional requirements is scarce (MALAVOLTA et al, 1997;MARSCHENER, 1997;DECHEN;NACHTIGALL, 2006;CAVALCANTe et al, 2012;CAVALCANTE et al, 2014;CUNHA et al, 2015). The works of greatest importance, involving nutrition, are old (SADHU; GHOSH, 1976).…”

Section: Introductionmentioning

confidence: 99%

The Development of Custard Apple Flower Bud Under Nitrogen and Potassium Nutrition

et al. 2016

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-The custard apple tree (Annona squamosa L.), has increased in cultivation due to good prices in the national market. However, there are few studies regarding the fruit's nutrition. The aim of this study was to verify the influence of N and K levels in developing the flower buds in two growing cycles, corresponding to the time of high temperatures (spring-summer) and another milder season (autumn-winter). The experiment was conducted in a rural property located in the municipality of Anagé, Bahia, installed in a randomised complete block design with 3 blocks, arranged in a factorial 4 x 4, obtained by the combination of the following levels of N (0, 16.875, 33.750 and 67.500 g plant -1 ) in the form of urea and K (0, 22.5, 45.0 and 90.0 g plant -1 ) in the form of potassium chloride, applied every fifteen days (every fortnight / every two weeks). It was evaluated the vigor of floral buds, measured by determining its weight and the length of them. At the end of the study it was concluded that the vigor of the floral buds tended to increase with elevated levels of nitrogen in the coldest period of the year (dry season with low in temperature). In the spring-summer period (rainy season and high temperature) the vigor of the flower buds was reduced as they increased the doses of N. Potassium did not affect the vigor of the flower buds in these considered periods. There was no interaction between N and K levels for the vigor of the flower buds. Index terms: Annona squamosa L., Annonaceae, growth, nutrition, floral quality. DESENVOLVIMENTO DE BOTÕES FLORAIS DA PINHEIRA EM FUNÇÃO DA ADUBAÇÃO NITROGENADA E POTÁSSICARESUMO -A pinheira (Annona squamosa L.) tem seu plantio aumentado em detrimento dos bons preços alcançados no mercado nacional. Porém, existem poucos estudos sobre sua nutrição. O presente trabalho teve como objetivo verificar a influência dos níveis de N e K no desenvolvimento de seus botões florais em dois ciclos de cultivo, que corresponderam à época de temperaturas elevadas (primavera-verão) e outra mais amenas (outono-inverno). O experimento foi desenvolvido em propriedade rural localizada no município de Anagé-BA, instalado no delineamento de blocos casualizados, com 3 blocos, arranjados num esquema fatorial de 4 x 4, obtidos pela combinação dos seguintes níveis de N (0; 16,875; 33,750 e 67,500 g planta -1 ) na forma de ureia e K (0; 22,5; 45,0 e 90,0 g planta -1 ), na forma de cloreto de potássio, aplicados quinzenalmente. Foi avaliado o vigor dos botões florais, medidos através da determinação de sua massa e do comprimento dos mesmos. Ao final do estudo, pôde-se concluir que o vigor dos botões florais da pinheira tendeu a aumentar com a elevação das doses de nitrogênio no período mais frio do ano (período seco com queda de temperatura). No período de primavera-verão (período chuvoso e de alta temperatura), ocorreu redução do vigor dos botões florais a medida que aumentaram as doses de N. O potássio não afetou o vigor dos botões florais da pinheira nas épocas consideradas. Não houve interaçã...

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<b>Impact of humic substances and nitrogen fertilising on the fruit quality and yield of custard apple

Cited by 18 publications

References 21 publications

Influence of Seasonality in the Production and Quality of Annona squamosa L. Fruit of Different Sizes

Influence of Seasonality in the Production and Quality of Annona squamosa L. Fruit of Different Sizes

Nutritional status, production and fruit quality of west indian cherry fertigated with nitrogen and humic substance

The Development of Custard Apple Flower Bud Under Nitrogen and Potassium Nutrition

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