Organic Citrus: Soil Fertility and Plant Nutrition Management

Canali, Stefano; Roccuzzo, G.; Tittarelli, Fabio; Ciaccia, Corrado; Stagno, Fiorella; Intrigliolo, F.

doi:10.1007/978-94-007-4171-3_24

Cited by 7 publications

(5 citation statements)

References 58 publications

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“…These results are similar to that found by Barakat et al [ 4 ] on Newhall and Canali et al [ 15 ] on Tarocco and Navelina oranges on a 4-year average investigation, in citrus. These authors showed an improvement on plant nutritional status with organic fertilization compared to the chemical fertilizers through increasing their contents of phosphorus and potassium.…”

Section: Resultssupporting

confidence: 92%

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Liquid Organic Fertilizers for Sustainable Agriculture: Nutrient Uptake of Organic versus Mineral Fertilizers in Citrus Trees

et al. 2016

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The main objective of this study was to compare the performance of two liquid organic fertilizers, an animal and a plant-based fertilizer, with mineral fertilization on citrus trees. The source of the fertilizer (mineral or organic) had significant effect in the nutritional status of the organic and conventionally managed mandarins. Nutrient uptake, vegetative growth, carbohydrate synthesis and soil characteristics were analyzed. Results showed that plants fertilized with animal based liquid fertilizers exhibited higher total biomass with a more profuse development of new developing organs (leaves and fibrous roots). Liquid organic fertilization resulted in an increased uptake of macro and micronutrients compared to mineral fertilized trees. Moreover, organic fertilization positively affected the carbohydrate content (fructose, glucose and sucrose) mainly in summer flush leaves. Liquid organic fertilization also resulted in an increase of soil organic matter content. Animal-based fertilizer, due to intrinsic composition, increased total tree biomass and carbohydrate leaves content, and led to lower soil nitrate concentration and higher P and Mg exchangeable in soil extract compared to vegetal-based fertilizer. Therefore, liquid organic fertilizers could be used as an alternative to traditional mineral fertilization in drip irrigated citrus trees.

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Section: Resultssupporting

confidence: 92%

“…Citrus ( Citrus spp.) play an important role in organic farming system, being one of the most highly demanded products on the market for organic produce [ 15 ]. Nowadays, organic citrus makes about 2–7% of the global production [ 16 ] and 0.8% of the world citrus cultivated area [ 17 ], being thus a niche crop.…”

Section: Introductionmentioning

confidence: 99%

Liquid Organic Fertilizers for Sustainable Agriculture: Nutrient Uptake of Organic versus Mineral Fertilizers in Citrus Trees

et al. 2016

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“…Previous studies demonstrated that balanced fertilization with the 4R Nutrient steward concept as the core was considered to cut the cost and increase fruit yield and quality (Srivastava and Malhotra 2014). Moreover, organic cultivation including organic manures and biofertilizers of citrus could bring a positive effect on fruit quality production (Canali et al 2012;Toselli et al 2020). The FR treatment decreased 25% of total NPK nutrition which seemed to improve nutrient use e ciency and fruit quality.…”

Section: Discussionmentioning

confidence: 99%

Grass and Plastic Film Mulching Pattern Improve Soil Organic Carbon Pool, Physical Properties, Fertility and Fruit Quality of Ponkan Orchards

Dong¹,

Xue²,

Chen³

et al. 2021

Preprint

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Aims: Special fertilizer and soil mulching have been used to improve crop yield worldwide. However, the effects of special fertilizer with mulching on soil characteristics of citrus orchards were not yet fully understood. This study aimed at assessing the effects of different mulch patterns including plastic mulching and grass mulching on improving fruit quality of Ponkan and providing a new insight of mulching development in citrus orchards.Methods: In this study, a two-year field experiment was conducted to investigate the effects of citrus special fertilizer (FR), grass mulching (RGM), and plastic mulching (RPM) on fruit quality, soil organic carbon fractions, physicochemical properties, and plant nutrition in Ponkan citrus orchard.Results: The study resulted showed that special fertilizer treatment and grass mulching treatment increased Total soluble solid contents by 6.76% and 3.97%, while plastic mulching decreased Titratable acid contents by 19.44%, resulting in increases of fruit TSS: TA by 6.14%, 3.61%, and 22.76%, respectively. Correlation analyses showed that citrus fruit quality was associated with soil bulk density, Total porosity, Capillary porosit, Aeration porosity, Total organic carbon, Readily oxidized organic carbon, Microbial biomass carbon and Soil available phosphorus. Soil physical properties were improved by RPM, but FR and RGM had better effects on soil nutrients and organic carbon, as evidenced by the results of principal component analysis and loading matrix plot. Conclusions: This study suggested that the different effects of special fertilizer, plastic mulching, and grass mulching on improving fruit quality were associated with their diverse effects on improving soil characteristics.

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“…In this case, manure can improve the efficiency of fertilizer uptake. Applying organic fertilisers improves soil quality, increases carbon sequestration, and mitigates atmospheric CO2 levels [3]. To improve soil structure and nutrient cycles, using organic fertilizers such as compost can save energy compared to inorganic fertilizers [4].…”

Section: Research Backgroundmentioning

confidence: 99%

The Effect of Applying Azolla Liquid Organic Fertilizer in the Growth of Oil Palm Seedlings in Pre-Nursery

Hastuti,

Wirianata,

Yunita

et al. 2024

ajarcde

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The development and replanting of smallholder oil palm is rapid and massive; its success from the beginning is determined, among others, by sufficient quantities of seeds with good quality. Nutrient management is the highest priority in nurseries, and along with strengthening the application of sustainability principles in the palm oil industry, alternative sources of nutrients other than inorganic fertilizers are needed. This study aimed to determine the right concentration of Azolla liquid organic fertilizer to increase the growth of oil palm seedlings in pre-nursery. The study was a single factor arranged in a completely randomized design. The studied treatment of POC Azolla concentrations of 100, 85, 75, 65, 55, 45, 35, 25, 15%, plus compost treatment of Azolla solids, NPKMg (15-15-6-4) and urea with 8 repetitions. Required seedlings (9+3) x 8 = 96 polybags. The results showed that applying Azolla POC concentration of 15-35% and solid Azolla compost provided the growth of oil palm seedlings in the pre-nursery, which tended to be better than inorganic fertilizers. POC in this concentration range also results in a better seedling root system, thus potentially increasing the adaptability of oil palm seedlings after being transplanted on permanent land

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Organic Citrus: Soil Fertility and Plant Nutrition Management

Cited by 7 publications

References 58 publications

Liquid Organic Fertilizers for Sustainable Agriculture: Nutrient Uptake of Organic versus Mineral Fertilizers in Citrus Trees

Liquid Organic Fertilizers for Sustainable Agriculture: Nutrient Uptake of Organic versus Mineral Fertilizers in Citrus Trees

Grass and Plastic Film Mulching Pattern Improve Soil Organic Carbon Pool, Physical Properties, Fertility and Fruit Quality of Ponkan Orchards

The Effect of Applying Azolla Liquid Organic Fertilizer in the Growth of Oil Palm Seedlings in Pre-Nursery

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