Effects of Different Fertilization Treatments on Soil, Leaf Nutrient and Fruit Quality of Citrus grandis var. longanyou

Abstract

The five-year-old "Longanyou" trees were used as the experimental material to study the effects of different fertilization treatments. The nutrient contents in soil and leaves, fruit yield and quality were determined, and then the correlations were analyzed. The results showed that: 1) The soil nutrient contents of 0-20 cm depth were more than the 20-40 cm, and the trends of nutrient contents of the 0-20 cm soil layers were as follows: treatment 2 (T2) > treatment 3 (T3) > treatment 4 (T4) > treatment 1(T1) > control (CK). However, the 20-40 cm depth had not significant difference between different treatments, but T2, T4 and T3 were higher than T1 and CK. It indicated that the soil effective nutrient content increased in T2 and T3. 2) Compared with the control, the content of K and B elements was improved obviously in leaves with the increase of organic manure application. The contents of P (1.60 g•kg −1), B (26.00 mg•kg −1) and Mg (1.18 g•kg −1) were the highest, and other nutrients contents were also higher, indicating that T2 could effectively improve the leaves' nutrient contents. 3) The fruit yield per plant was the highest in T2 (95.40 kg plant −1), and the single fruit weight, total sugar, sugar and acid ratio, vitamin C were also the highest, but titratable acid was lower. It indicated that T2 effectively improved fruit yield and quality. 4) There were positive correlations between multiple factors of soil nutrients and the quality index, such as fruit peel thickness, total sugar, solid acid ratio, sugar and acid ratio, Vc content and single yield etc. There was significant correlation between K, B, Zn, Fe contents and fruit yield and quality index, and the contents of B, Zn and Fe in leaves were significantly correlated with soil nutrient, indicating that the contents of K, B, Zn, Fe in soil and leaf were closely related to fruit yield and quality. In sum, the T2 was the best fertilization scheme for orchard management practice of "Longanyou".

Effects of Foliar Fertilization on Nutrient Uptake, Yield, and Fruit Quality of Pomelo (Citrus grandis Osbeck) Grown in the Mekong Delta Soils

“…e study demonstrated that the leaf P, K, and Mg concentrations were positively correlated with TSS content and yield but negatively correlated with acidity (Figure 2), which agrees with the results of Li et al [58] who reported that there was a positive correlation between the leaf nutrients (P, K, and Mg) and TSS content of citrus fruits or yield. Similarly, we found that most of the nutrients in citrus fruits were negatively correlated with the acidity of fruits and positively correlated with the TSS content and fruit yield (Figure 3).…”

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

“…According to Xiao et al [19], organic fertilizer combined with compound fertilizer improved soil quality, whereas the utilization of compound fertilizer worsened soil quality and made the soil acidize; this result was similar to that of Song et al [20] and Pachuau et al [23]. Qiu et al [15] reported that chemical fertilizer combined with biofertilizer application significantly promoted root growth, improved the rate of nutrient distribution in citrus, and improved the external and internal qualities of tarocco blood orange; this result was similar to those of previous study of citrus [24][25][26]. According to Pei et al [7], organic fertilizer is an alternative to chemical fertilizer with no loss in yield and fruit quality for citrus.…”

“…This has led to deterioration of soil properties and ecological environment. However, a combination of chemical and organic fertilizer is not only beneficial in improving the properties and environment of soils, but also promotes crop yield and quality [19][20][21][22][23][24][25][26][27][28][29][30]. Here, our work confirmed that CFOF was helpful in increasing citrus yield and improving soil properties.…”

Effect of Different Soil Fertility on Growth and Development of Two Citrus Cultivars Under Two Locations

“…Beside the genetic character, the levels of nutrients absorbed in the leaves also generally depend on the fertility status of its media. According to Li et al [13], the contents of B, Zn and Fe in leaves of Citrus grandis var. Longanyou were significantly correlated with soil nutrient.…”