Accumulative effects of humic acid and multinutrient foliar fertilizers on the vegetative and reproductive attributes of citrus (<i>Citrus reticulata</i> cv. kinnow mandarin)

Hameed, Amir; Fatma, Shabih; Wattoo, Javed Iqbal; Yaseen, Muhammad; Ahmad, Saeed

doi:10.1080/01904167.2018.1510506

Cited by 16 publications

(16 citation statements)

References 22 publications

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“…In addition, apple orchard with organic-inorganic mixed fertilizer promoted soil microbial activity and increased soil organic matter by 16% and crop production by 67% when compared with chemical fertilizer application alone [26] and those results were consistent with research of Lai et al [27]. Some experiments [28][29][30] also show that application of CFOF improves plant physiological indexes and yield compared with inorganic fertilizers on their own. These studies indicate that CFOF improves soil microbial activity, enhances physical and chemical soil properties, and promotes the absorption and utilization of nutrients, thus facilitating high crop yields.…”

Section: Introductionsupporting

confidence: 88%

Effects of Chemical Fertilizer Combined with Organic Fertilizer Application on Soil Properties, Citrus Growth Physiology, and Yield

Wan

Tian

et al. 2021

Agriculture

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Chemical fertilizer has been excessively used for high yield of citrus around the world, especially in China; meanwhile, it deteriorates the citrus orchard soil environment. To resolve the conflict, the use of organic fertilizer provides a promising solution. However, the data about organic fertilizer used in citrus orchard is rarely available. Here, four treatments including CK (no fertilizer), CF (chemical fertilizer), OF + CF (chemical fertilizer reduction combined with organic fertilizer; application of N, P2O5, K2O fertilizer and organic fertilizer is 0.564, 0.236, 0.336 and 10 kg/plant), and BF + CF (chemical fertilizer reduction combined with bioorganic fertilizer; application of N, P2O5, K2O fertilizer and bioorganic fertilizer is 0.508, 0.320, 0.310 and 10 kg/plant) were performed in a ‘Ponkan’ (Citrus reticulata Blanco) orchard to evaluate the effect of organic fertilizer on citrus yield, growth, soil properties etc. when nutrients of fertilizer of each treatment were equal except CK. The data obtained in 2019 and 2020 showed that both OF + CF and BF + CF were beneficial to improve soil fertility (soil physicochemical and microbe properties) and citrus growth physiology (growth, nutrient and photosynthesis), alleviate NO3−-N leaching, and promote yields. Comprehensive evaluation indicated that BF + CF was more effective than OF + CF. Together, organic fertilizer has the potential to substitute partial chemical fertilizer with improvement in soil properties, growth physiology, and yield of citrus.

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Section: Introductionsupporting

confidence: 88%

Effects of Chemical Fertilizer Combined with Organic Fertilizer Application on Soil Properties, Citrus Growth Physiology, and Yield

Wan

Tian

et al. 2021

Agriculture

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“…With respect to carboncontaining substances, base dressing of 2.7 g kg −1 fulvic acids increased fold changes of phenylalanine, valine, and methionine, which possibly improved the fragrance of tomato berries (Ou et al, 2007), and the increased arginine contributed to an improvement in the quality of fruit berries (Micallef and Shelp, 1989;Nasibi et al, 2011). Consistent with our study, humic acids increased the concentrations of linolenic and linoleic acid in rapeseed (Amiri et al, 2020), the titratable acids in citrus (Hameed et al, 2018), and the amino acids in tomatoes (Yildirim, 2007). However, fulvic acids did not affect fold changes of soluble sugar and some aromatic substances (Figure 2), similar to a previous study (Canellas et al, 2013).…”

Section: Fulvic Acids Increased the Quality Of Vegetablessupporting

confidence: 89%

Dose-Dependent Application of Straw-Derived Fulvic Acid on Yield and Quality of Tomato Plants Grown in a Greenhouse

Zhang

et al. 2021

Front. Plant Sci.

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Fulvic acids are organic compounds widely distributed in soils, and the application of fulvic acids is thought to increase crop yield and quality. However, the effects vary among various sources and doses of fulvic acids and environmental and growth conditions of crops. Here, we investigated the effects of bioresource-derived (corn straw) fulvic acids on plant production and quality of tomato plants and soil chemical properties in soil cultures while experiments on seed germination and hydroponics were conducted to explore the underlying mechanism. Base dressing with 2.7 g kg–1 increased the yield of tomato by 35.0% at most as increased fruit number. Fulvic acids increased the concentrations of minerals, such as Ca, Fe, and Zn and the concentrations of citric, malic, and some amino acids in berries of tomato but did not affect the concentrations of soluble sugars and aromatic substances in tomato fruits. Similarly, fulvic acids at 80–160 mg L–1 increased germination rate, growth vigor, and radicle elongation of tomato seeds while it increased plant biomass, concentrations of nutrients, and root length of tomato plants in hydroponics to the greatest extent in general. The increases in yield and quality can be attributed to the improvement in root growth and, thus, increased nutrient uptake. In addition, the base application of fulvic acids improved soil cation exchange capacity and soil organic matter to an extent. In conclusion, base dressing and the addition into solution of fulvic acids at moderate doses facilitate root growth and nutrient uptake and, thus, vegetable production and quality; therefore, fulvic acids can be an effective component for designing new biofertilizers for sustainable agricultural production.

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“…In practice, liquid compost extracts, fully enriched with HS, represent a costeffective tool to conduct foliar application (Zandonadi et al, 2013;Berbara and García, 2014). A wide range of plants have been tested with HS application under open-field conditions, such as garlic (Balmori et al, 2019), common beans (Kaya et al, 2005;Souri and Aslani, 2018), wheat (Zhang et al, 2016;Ahmad et al, 2018;Bezuglova et al, 2019), fenugreek (Ibrahim, 2019), tomato (Olivares et al, 2017), asparagus (Tejada and Gonzalez, 2003), maize (Canellas et al, 2015a) and citrus tree (Hameed et al, 2018). Foliar application is frequently reported in calcareous soil conditions where nutrient uptake, especially iron, is limited due to precipitation (Çelik et al, 2011;Souri and Aslani, 2018;Bezuglova et al, 2019).…”

Section: Foliar Applicationmentioning

confidence: 99%

From Lab to Field: Role of Humic Substances Under Open-Field and Greenhouse Conditions as Biostimulant and Biocontrol Agent

et al. 2020

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The demand for biostimulants has been growing at an annual rate of 10 and 12.4% in Europe and Northern America, respectively. The beneficial effects of humic substances (HS) as biostimulants of plant growth have been well-known since the 1980s, and they can be supportive to a circular economy if they are extracted from different renewable resources of organic matter including harvest residues, wastewater, sewage sludge, and manure. This paper presents an overview of the scientific outputs on application methods of HS in different conditions. Firstly, the functionality of HS in the primary and secondary metabolism under stressed and non-stressed cropping conditions is discussed along with crop protection against pathogens. Secondly, the advantages and limitations of five different types of HS application under open-fields and greenhouse conditions are described. Key factors, such as the chemical structure of HS, application method, optimal rate, and field circumstances, play a crucial role in enhancing plant growth by HS treatment as a biostimulant. If we can get a better grip on these factors, HS has the potential to become a part of circular agriculture.

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Accumulative effects of humic acid and multinutrient foliar fertilizers on the vegetative and reproductive attributes of citrus (Citrus reticulata cv. kinnow mandarin)

Cited by 16 publications

References 22 publications

Effects of Chemical Fertilizer Combined with Organic Fertilizer Application on Soil Properties, Citrus Growth Physiology, and Yield

Effects of Chemical Fertilizer Combined with Organic Fertilizer Application on Soil Properties, Citrus Growth Physiology, and Yield

Dose-Dependent Application of Straw-Derived Fulvic Acid on Yield and Quality of Tomato Plants Grown in a Greenhouse

From Lab to Field: Role of Humic Substances Under Open-Field and Greenhouse Conditions as Biostimulant and Biocontrol Agent

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