The Effects of Fertilization on the Growth and Physiological Characteristics of Ginkgo biloba L.

Abstract

Ginkgo biloba L. is one of the most extensively planted and productive commercial species in temperate areas around the world, but slow-growth is the most limiting factor for its utilization. Fertilization is one of the key technologies for high quality and high forest yield. To better understand the impacts of fertilization on Ginkgo productivity, the effects of fertilization treatments (single fertilizer and combined fertilizer) on growth, nutrient content in Ginkgo leaves, and photosynthesis characteristics were studied in a 10-year-old Ginkgo plantation over two years. The single factor experiments suggested that DBH (diameter at breast height), H (height), NSL (length of new shoots), and V (trunk volume) showed significant differences between the different levels of single nitrogen (N) or phosphate (P) fertilizer application. Orthogonal test results showed that the nine treatments all promoted the growth of Ginkgo, and the formula (N: 400 g·tree −1 , P: 200 g·tree −1 , potassium (K): 90 g·tree −1 ) was the most effective. G s (stomatal conductance) and P n (net photosynthesis rate) showed significant differences between the different amounts of single N or P fertilizer application, while single K fertilizer only affected P n . Combined N, P, and K fertilizer had significant promoting effects on C i (intercellular CO 2 concentration), G s and P n . N and P contents in Ginkgo leaves showed significant differences between the different amounts of a single N fertilizer application. A single P fertilizer only improved foliar P contents in Ginkgo leaves. A single K fertilizer application improved N and K content in Ginkgo leaves. The effects of different N, P, and K fertilizer treatments on the nutrient content of Ginkgo leaves were different.

Impacts of a High Nitrogen Load on Foliar Nutrient Status, N Metabolism, and Photosynthetic Capacity in a Cupressus lusitanica Mill. Plantation

“…plantation (Figure 1). These results were supported by the findings in N-limited temperate forests [34,67,68], where an adequate N supply generally increased photosynthetic capacity, but net photosynthesis and growth were suppressed by excessive N addition. The reduction in photosynthetic efficiency may be due to the following three reasons.…”

Afforestation and agroforestry enhance soil nutrient status and carbon sequestration capacity in eastern China

“…Previous studies demonstrated the importance of P availability to the SOC accumulation that P is vital for energy generation and nucleic acid synthesis of soil microorganisms (Merino et al, ). The vertical variation in TK content exhibited different patterns among the five planting systems, which can be attributed to the high mobility of K in the soil, which resulted in the weak correlation between TK and SOC (R 2 = 0.07003; Guo et al, ; Wang et al, ). Using correlations, we can predict nutrient limitations in the planting systems, which can act as key indicators for local farmers to modify and optimize their intercropping strategies.…”

“…Ginkgo ( Ginkgo biloba L.) is a multipurpose tree species that is highly valued for its medicinal, edible, and ornamental aspects (Guo et al, ). In ginkgo plantations, many types of crops have been used as intercrops between the widely spaced rows of ginkgo.…”

Effect of Different ‘N’ Dosages on the Bio-chemical Indices in Swietenia macrophylla (King.) & Swietenia mahogany (L.) Jacq.

“…Chlorophyll content signifies photosynthetic activity as well as growth, metabolic activities, nutrient uptake, development of plant biomass [2]. Nitrogen is a limiting factor for plant yield and productivity in temperate and boreal forest ecosystems [3,4] Nitrogen is an important constituent in proteins, nucleic acids, chlorophylls, many secondary metabolites and growth regulators production in many plants [5,6]. Hence it capers substantive role in enzymatic activities of photosynthetic processes in plants.…”