Advances on apple production under semiarid climate: N fertigation

Miranda, João Marcos de Sousa; Cavalcante, Ítalo Herbert Lucena; Oliveira, Inez Vilar de Morais; Lopes, P. R. C.

doi:10.9755/ejfa.2015-04-075

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…However, the MFCE value of apples showed a downward trend when irrigation was above a medium level, and the nitrogen application was at a high level (Figure 8). In fact, other studies have shown that excessive amounts of nitrogen application and irrigation can reduce apple yield and quality, respectively [52][53][54]. Therefore, we obtained the optimal amount of nitrogen application and irrigation for apples in the Loess Plateau, and these were obtained based on the comprehensive evaluation of apples.…”

Section: Discussionmentioning

confidence: 99%

Precision Nitrogen Fertilizer and Irrigation Management for Apple Cultivation Based on a Multilevel Comprehensive Evaluation Method of Yield, Quality, and Profit Indices

Cai

Zheng

Zhao

et al. 2023

Water

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Precise and efficient fertilizer and irrigation management is critical for apple production in the Loess Plateau, China. In this study, we established three levels of nitrogen application and irrigation in nine treatments in an apple orchard based on a completely randomized block design. Then, we analyzed different apple indicator responses to nitrogen and irrigation and their related interactions. More importantly, we used the multilevel comprehensive fuzzy evaluation value (MFCE) method to combine the weights of all indicators to obtain the comprehensive growth indicators for apples. Finally, we analyzed the effect of nitrogen and irrigation coupling on the comprehensive growth of apples and then determined the optimal interval for nitrogen application and irrigation. The results indicated that an increase in the amount of irrigation was beneficial for apple yield, but excessive nitrogen fertilizer application significantly reduced apple yield. The apple indicators were not sensitive to irrigation and nitrogen application and their related interactions; they were mainly controlled by the apple cultivar. On the other hand, an increase in the amount of nitrogen fertilizer or a reduction in the amount of irrigation could improve apple quality. The results of the comprehensive evaluation showed that the T5 treatment was most beneficial for the comprehensive growth of apples. To obtain the optimal interval for nitrogen application and irrigation more precisely, we used multiple linear regression based on the MFCE values of apples, nitrogen, and irrigation in R language. Nitrogen and irrigation showed a positive effect on the comprehensive growth of apples when the irrigation amount was low. However, nitrogen application and irrigation had a negative effect on the comprehensive growth of apples when the irrigation level was high. After optimization, the optimal nitrogen application and irrigation amounts were 170.5–189.5 kg·hm−2 and 38.4–42.7 mm, respectively. We recommend using this irrigation and fertilizer management scheme for apple orchards in China’s Loess Plateau.

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Section: Discussionmentioning

confidence: 99%

Precision Nitrogen Fertilizer and Irrigation Management for Apple Cultivation Based on a Multilevel Comprehensive Evaluation Method of Yield, Quality, and Profit Indices

Cai

Zheng

Zhao

et al. 2023

Water

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“…Recent experimental results have demonstrated that apples can be grown in non-traditional regions, with short or even no cold period, by cultivating little cold demand cultivars such as 'Julieta' and 'Princesa' (Lopes, Oliveira, Silva, & Cavalcante, 2012;Lopes, Oliveira, Silva, & Cavalcante, 2013;Miranda, Cavalcante, Oliveira, Lopes, & Assis, 2015a;Miranda, Cavalcante, Oliveira, & Lopes, 2015b).…”

Section: Introductionmentioning

confidence: 99%

Growing apples in tropical semiarid: N and K fertigation

et al. 2021

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Apple tree has been experimentally grown Brazilian tropical semiarid. In these new regions, fertilizing management research for N and K is crucial to reach apple high yields. Therefore, an experiment was conducted to evaluate the effect of N and K fertilizing on fruit production, leaf chlorophyll and N and K nutritional status of apple cv. ‘Julieta’ grown in Brazilian tropical semiarid. The experimental design used was randomized blocks with treatments disposed in a factorial arrangement (4 x 4) referring to nitrogen doses (30, 60, 90, and 120 g of N plant-1) and potassium doses (30, 60, 90, and 120 g of K2O plant-1), with three replications and three plants in each parcel. ‘Julieta’ apple trees propagated by grafting (with ‘M9 filter and Maruba rootstock) and transplanted in 2013 were used in this study. The following variables were evaluated: i) fruit production (kg plant-1); ii) number of fruits (in a plant); iii) leaf chlorophyll index (‘a’, ‘b’, and total); and iv) leaf N and K concentrations (g kg-1). N and K doses effects depend on the consecutive production cycles of apple cv. ‘Julieta’ grown in tropical semiarid. An adequate N supply is very important for the subsequent production cycle. K fertilization until 120 g plant-1 of K2O is not enough to supply K demand of apple cv. ‘Julieta’ grown in tropical semiarid. In tropical semiarid, 60-90 g plant-1 of N through fertirrigation is enough for ‘Julieta’ apple production.

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“…Edaphoclimatic situation of the Northeast region guarantees of agronomic development of species of temperate and subtropical climate (Rodrigues et al, 2012) like the cultures of persimmon (Lopes et al, 2013a;2013b), apple tree (Miranda et al, 2015), and pear tree (Oliveira et al, 2015). In this approach, information is sought regarding the adaptation of the fig tree in order to maximize the production and commercialization of the fruits in the off-season.…”

Section: Introductionmentioning

confidence: 99%

Phenology and vegetative growth of the fig tree cv “Roxo de Valinhos” under a drastic pruning system

2019

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The phenological adaptability and growth of the fig tree (Ficus carica L.) was observed periodically in the Brazilian semi-arid, State of Piauí, Brazil. The study was done using in 46 plants of the fig tree cv “Roxo de Valinhos”, in Bom Jesus, Piauí in the period from April to August of 2018. The meteorological elements associated with phenology were: air temperature, relative humidity, precipitation, and photoperiod. The results revealed significant relations between the phenology, growth, and climatic conditions showing promising answers for the cultivation of the fig tree cv “Roxo de Valinhos”, in the semi-arid region of Piauí.

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Advances on apple production under semiarid climate: N fertigation

Cited by 4 publications

References 17 publications

Precision Nitrogen Fertilizer and Irrigation Management for Apple Cultivation Based on a Multilevel Comprehensive Evaluation Method of Yield, Quality, and Profit Indices

Precision Nitrogen Fertilizer and Irrigation Management for Apple Cultivation Based on a Multilevel Comprehensive Evaluation Method of Yield, Quality, and Profit Indices

Growing apples in tropical semiarid: N and K fertigation

Phenology and vegetative growth of the fig tree cv “Roxo de Valinhos” under a drastic pruning system

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