Effects of Fertilization Approaches on Plant Development and Fertilizer Use of Citrus

Abstract

Fertilization is an important part of citrus crop management. However, limited details are available about the fertilization approach on citrus plant development. A pot experiment for the fertilization approaches and fertigation levels were conducted in this study. Four fertilization approaches, namely, drip fertigation (DF), broadcast fertilization (CK+), hole fertilization (HF) and pour fertilization (PF) were tested. The fertigation level treatment included 100% (DF-337.5), 80% (DF-270), 60% (DF-202.5) and 40% (DF-135) fertilizer supply with DF, and the 100% fertilizer supply with broadcast fertilization were served as control (CK). The results showed that DF not only increased the absorptions of nitrogen (N), phosphorus (P) and potassium (K) but also promoted citrus plant height, stem diameter and dry weight. In fruit quality, DF had the highest fruit total soluble solid (TSS) and titratable acidity (TA) contents. For fertilizer loss, DF had the lowest N and K leaching losses of 9.26% and 4.05%, respectively, and the lowest N and K runoff losses among the approaches. Isotopic tracing with 15N indicated that DF had the highest fertilizer use efficiency. Based on the analysis of fertigation levels, DF approach with 60% fertilizer reduction could improve citrus plant development. Therefore, DF promoted citrus plant growth and fruit quality by accelerating fertilizer utilization and impairing fertilizer loss. The fertilizer amount in citrus production could be reduced significantly using DF.

Comparative study on comprehensive quality of Xinhui chenpi by two main plant propagation techniques

“…However, in grafted XHCP, the content of α‐Thujene, α‐Pinene, Sabinen, and β‐Pinene was higher than that of cutting XHCP, which is contrary to the public's understanding of the better quality of cutting XHCP. In addition, the large within‐group variation in the scoring plot might be due to the lack of standardized cultivation of XHCP, as soil, tree age, fertilization, irrigation, pruning, and pest and disease control in cultivation might affect fruit quality (Cheng et al, 2015 ; Jiao et al, 2022 ; Khalid et al, 2016 ; Liu et al, 2021 ; Ma et al, 2022 ; Manthos & Rouskas, 2021 ).…”

Phát thải khí nhà kính từ các vườn bưởi da xanh (Citrus maxima Burm. Merr.) canh tác theo tiêu chuẩn thực hành nông nghiệp tốt của Việt Nam và canh tác thông thường

“…Khi nghiên cứu hiệu quả của các phương pháp bón phân trên vườn cam và quýt tại Trung Quốc, Ma et al (2022) đã thực hiện 4 phương pháp bao gồm: 2 phương pháp tưới (tưới phân nhỏ giọt và tưới đổ 1 lần) và 2 phương pháp bón phân rắn (rải trên mặt đất và bón vào các hố nhỏ). Ma et al (2022) đã kết luận rằng tưới phân bón nhỏ giọt sẽ thúc đẩy tăng trưởng cây có múi và chất lượng trái bằng cách đẩy nhanh việc sử dụng phân bón và giảm thiểu thất thoát dinh dưỡng trong phân bón. Lượng phân bón trong sản xuất cây có múi có thể giảm đáng kể khi sử dụng phương pháp tưới phân nhỏ giọt.…”

Enhancing nutrient uptake and grapefruit (Citrus paradisi) growth through soil application of beneficial bacteria (Bacillus spp.)

“…On the other hand, water and fertilizer play vital roles in the growth and fruit yield of citrus. The quantity of fertilizer used in citrus management is linked to both production costs and environmental concerns (Ma et al, 2022), thus nutrient management has been implemented to promote citrus trees' health in Florida where soils are poorly drained and have low fertility (Hallman et al, 2022). Based on the current disease and nutrient problems the citrus industry in Florida is facing, the objective of this study is to evaluate the role of Bacillus spp.…”