Effect and Roles of Nitrogen Supply on Photosynthesis

Abstract

N deficiency caused a decrease in leaf N content, Chlorophyll a and carbon assimilation of crop plants, resulting in a lower dry matter accumulation. It increases overall plant growth, but the nature of this response depends upon patterns of plant, nitrogen allocation, nutrient that vary throughout the growing season and depend upon canopy position. Decreased photosynthetic capacity is not only associated with direct effects of N deficiency but also with a negative feedback mechanism from the leaf carbohydrate pool. Because of the high requirement of crop plants for elemental N and its numerous important roles in growth and development, N is the mineral element that most often limits crop productivity. Because N mineralization from the soil is normally too low to support desired production levels, soil N levels are typically increased through fertilization. However, the complex cycle of N in the environment causes uncertainty in N fertilizer management, increasing the chances for economic loss and environmental damage. Nitrogen use and productivity of crop plants is also complex, resulting from an interaction of biochemical, physiological, and morphological processes in the plant. Application of N increases N content in the leaves of the soybean plant which increase growth rate, Leaf are, leaf area index and other physiology of the plant during the study.

Effects of different nitrogen forms and concentration combinations on American ginseng seedling growth

“…As an essential part of N nutrition, the effects of inorganic N on plants are reflected in many aspects, mainly in response to varying soil nitrate-N and ammonium-N contents (Hasbullah and Marschner, 2016). Suitable ammonium-N uptake can increase the leaf chlorophyll content, delay leaf senescence, and preserve a high degree of plant photosynthetic capability (Carlisle et al, 2012;Mengesha, 2021). Therefore, the application of an appropriate amount of ammonium-N may increase the level of ammonium-N in plants and improve photosynthetic efficiency (Nasar et al, 2021).…”

Effect of chitosan application time on seedlings of various rambutan varieties (Nephelium lappaceum L.)

“…Chitosan can be used as a coating for fertilizers and other nutrients to control their release, increase shelf life, and prevent waste. The N element in chitosan will also affect plant cell division and leaf growth [12]. The N element enhances plant growth by providing water and stimulating new leaf production from the stem and older leaves lateral buds.…”

The role of remote sensing in tropical grassland nutrient estimation: a review

“…In addition, the bond between C and N pathways is essential to the growth and development of plants. This is because photosynthesis requires a large amount of N, so, for optimal CO 2 absorption through photosynthesis and consequently biomass production, enough N supply is required (Mengesha, 2021 ). In summary, the amount and distribution of N are key components of the carbon cycle and are valuable indicators of plants’ metabolism and development.…”