Citrus fruit yield response to nitrogen and potassium fertilization depends on nutrient-water management system

Quaggio, J. A.; Souza, Thaís Regina de; Zambrosi, Fernando César Bachiega; Mattos, Dirceu; Boaretto, Rodrigo Marcelli; Silva, Guilherme

doi:10.1016/j.scienta.2019.02.001

Cited by 24 publications

(18 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was no effect of N rates or secondary macronutrients on yield in this study, similar to Uthman (2019), who found a marginally significant effect of N rate on yield. Quaggio et al (2019) also found no difference between two N rates (120 kgÁha À1 N and 240 kgÁha À1 N) in an irrigated system with 4-year-old (Quaggio et al, 2019). Although not significant, there was a decreasing trend in fruit yield with increasing N rate, similar to the data reported by Schumann et al (2003) for healthy trees, warranting further investigation in HLBaffected trees.…”

Section: Discussionsupporting

confidence: 77%

mentioning

confidence: 99%

“…As fruit yield is one of the most important response variables when testing fertilizers and a major outcome that matters to citrus growers, the effects of fertilization on citrus yields have been studied extensively (Calvert, 1970;Koo, 1971;Obreza and Rouse, 1993;Quaggio et al, 2019;Schumann et al, 2003;Vang-Petersen, 1980;Weir, 1969). In a fertigated system, Quaggio et al (2019) obtained significantly higher yields (%53 tÁha À1 ) on 4-year-old 'Natal' sweet orange trees on Rangpur lime rootstock with a combination of 120 kgÁha À1 N and 80 kgÁha À1 K 2 O (50% rate) compared with the 50 t ha À1 yield obtained with a treatment that doubled those respective rates (100% rate), indicating that higher N rates do not necessarily translate into higher yields. In 'Hamlin' orange grafted on Swingle rootstock, Schumann et al (2003) obtained a quadratic response for yield when using dry granular fertilization, and the highest yield (%20 tÁha À1 ) was obtained with an N rate of %160 kgÁha À1 N. This rate is lower than the current recommendation of 224 kgÁha À1 N, but results from Schumann et al (2003) were obtained with non-HLB-affected trees.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Nitrogen, Calcium, and Magnesium Inconsistently Affect Tree Growth, Fruit Yield, and Juice Quality of Huanglongbing-affected Orange Trees

Esteves¹,

Maltais‐Landry²,

Zambon³

et al. 2021

horts

View full text Add to dashboard Cite

The bacterial disease Huanglongbing (HLB) has drastically reduced citrus production in Florida. Nutrients play an important role in plant defense mechanisms and new approaches to manage the disease with balanced nutrition are emerging. Nutrients like nitrogen (N), calcium (Ca), and magnesium (Mg) could extend the productive life of affected trees, although interactions among these nutrients in HLB-affected citrus trees are still unclear. A 2-year study was established in Florida to determine the response of HLB-affected trees to applications of N, Ca, and Mg. The study was conducted with ‘Valencia’ trees (Citrus sinensis L. Osbeck) on Swingle citrumelo (Citrus paradisi Macf. × Poncirus trifoliata L. Raf.) rootstock on a Candler sand. Applications of N at 168, 224 (recommended rate), and 280 kg⋅ha−1 N were used as the main plots. Split-plots consisted of a grower standard treatment receiving only basal Ca (51 kg⋅ha−1) and Mg (56 kg⋅ha−1); supplemental Ca (total Ca inputs: 96 kg⋅ha−1) only; supplemental Mg (total Mg inputs: 101 kg⋅ha−1) only; and supplemental Ca (total Ca inputs: 73.5 kg⋅ha−1) and Mg (total Mg inputs: 78.5 kg⋅ha−1). The following variables were measured: tree size, fruit yield, and juice quality. Although some differences in tree growth among treatments were statistically significant (e.g., greater canopy volume with Mg fertilization at 168 kg⋅ha−1 N), there was no clear and consistent effect of plant nutrition on these variables. Fruit yield was higher with Ca and Mg relative to the grower standard at the lowest N rate in 2020, and there were no other statistically significant differences among treatments. Juice acidity was significantly higher with Mg fertilization relative to other treatments in 2019. As N rates had no significant effect in this study, unlike secondary macronutrients, N rates could potentially be reduced to 168 kg N⋅ha−1 in HLB-affected citrus without affecting vegetative growth, fruit yield, and juice quality. However, this will require optimizing the supply of secondary macronutrients and all other nutrients to develop a balanced nutritional program. Ultimately, the effects of N, Ca, and Mg obtained in this 2-year study should be confirmed with longer-term studies conducted at multiple sites.

show abstract

Section: Discussionsupporting

confidence: 77%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen, Calcium, and Magnesium Inconsistently Affect Tree Growth, Fruit Yield, and Juice Quality of Huanglongbing-affected Orange Trees

Esteves¹,

Maltais‐Landry²,

Zambon³

et al. 2021

horts

View full text Add to dashboard Cite

show abstract

“…Nutrient use efficiency had always been one of the focuses in public, government and research communities [55,56]. Studies on fruit crops showed that use efficiency of N, P, and K fertilizers were negatively correlated with the fertilizer rates [57,58]. As stated earlier, the phenomenon of excessive and imbalanced fertilization by farmers was widespread in China, resulted in low fertilizer use efficiency of crops.…”

Section: Nutrient Use Efficiency Of Fruit Crops In Chinamentioning

confidence: 97%

Agronomic Responses of Major Fruit Crops to Fertilization in China: A Meta-Analysis

Yang

Wang

et al. 2019

Agronomy

View full text Add to dashboard Cite

With increasing application of nitrogen (N), phosphorus (P), and potassium (K) fertilizers, especially in China’s fruit crops, the agronomic responses of fruit crops to fertilization may be reduced with time. Thus, the quantification of these responses would be useful for establishing nutrient recommendation and fertilizer management for fruit crops. Here, a meta-analysis including 552 paired data for agronomic response and 1283 sets for amounts of optimal fertilization from 293 field studies in China were performed to systemically quantify these variations of yield response (YR), relative yield (RY), agronomic efficiency (AE), and partial factor productivity (PFP) in response to the application of N, P, or K fertilizer under different groups including fruit crop types, time, and regions. The results showed that the average YRs to N, P or K fertilizer were 7.6, 5.2, or 5.9 t ha−1, indicating related RYs of 78.0%, 82.9%, or 82.4%, respectively. All of the RYs for N, P, or K application in studies after 2000 were higher and less variable than those before 2000. Higher RYs were also shown for deciduous fruit trees when compared with evergreen fruit trees. The average AEs of N, P, and K fertilizer in China’s fruit crops were 29.1, 32.4 and 20.2 kg kg−1, all of them were negatively correlated with fertilizer rate. Due to a higher yield response and less fertilizer rate, annual crops (mainly watermelon and melons) had significantly higher AE than that of perennial crops. The average PFPs of N, P, and K fertilizer in China’s fruit crops were 129, 205, and 113 kg kg−1, all of which showed a declining trend with time. These findings demonstrated that the building-up of soil indigenous nutrient supply (indicated by RY) together with improving fruit varieties, as well as pest management and other forms of management could make external fertilization less important for increasing the yield of fruit crops in China. A rational nutrient management is therefore crucial for balancing yield and environmental concerns in countries like China, India, and other countries where fertilizers are often overused.

show abstract

“…Enhanced nutrition is a viable strategy to keep citrus (Citrus spp.) trees productive and the growers in business in the Huanglongbing (HLB) or citrus greening era [5][6][7][8][9][10][11]. However, some growers are applying more nutrients than needed to compensate for the negative effects of HLB [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Sap Analysis: A Powerful Tool for Monitoring Plant Nutrition

et al. 2021

View full text Add to dashboard Cite

Horticultural crop production is moving towards an era of higher nutrient use efficiency since nutrient deficiencies can reduce plant growth, productivity, and quality, and overfertilization can cause environmental pollution. Rapid nutrient concentration diagnostic is essential to minimize the negative effects of Huanglongbing (HLB) or citrus greening in citrus by providing the required nutrients before deficiency symptoms appear, reducing the impact of the disease on crop production. Sap analysis is an additional tool for fine-tuning nutrient applications in citrus. The main objective of this paper is to review the different methodologies and results obtained with sap analysis, considering its potential application in citrus production. Results from other crops show the pros and cons of using this tool. Substantial research has been conducted on vegetables and greenhouse crops, but few studies are available on perennial species such as citrus. Inconsistency in the extraction and analysis methods and the lack of specific sufficiency ranges for citrus open the path for further studies. Along with soil and leaf analyses, sap analysis is a complementary technique that can improve nutrient use efficiency in citrus production. Moreover, sap analysis has the potential to optimize fertilizer application, minimize environmental impacts and improve sustainability.

show abstract

Citrus fruit yield response to nitrogen and potassium fertilization depends on nutrient-water management system

Cited by 24 publications

References 16 publications

Nitrogen, Calcium, and Magnesium Inconsistently Affect Tree Growth, Fruit Yield, and Juice Quality of Huanglongbing-affected Orange Trees

Nitrogen, Calcium, and Magnesium Inconsistently Affect Tree Growth, Fruit Yield, and Juice Quality of Huanglongbing-affected Orange Trees

Agronomic Responses of Major Fruit Crops to Fertilization in China: A Meta-Analysis

Sap Analysis: A Powerful Tool for Monitoring Plant Nutrition

Contact Info

Product

Resources

About