Optimized Phosphorus Application Enhances Canopy Photothermal Responses, Phosphorus Accumulation, and Yield in Summer Maize

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 514 - 514

Published: Feb. 20, 2025

The improper application of phosphorus (P) fertilizers not only leads to resource wastage and environmental concerns but also disrupts the normal growth yield formation maize. This study aims explore effects varying P rates on growth, yield, photothermal response characteristics, accumulation dynamics, recovery efficiency (PRE) in summer maize, which provides a theoretical foundation for efficient scientific fertilizers. Field experiments were conducted over two growing seasons (2021−2022) Wen County, Henan Province, with set at 0, 30, 60, 90, 120 kg·P2O5·ha−1. At maturity, maize its components quantified. During key stages—jointing, tasseling, silking, grain filling—plant height, leaf area, Soil Plant Analyzer Development (SPAD) value, fraction photosynthetically active radiation (FPAR), canopy temperature, acid phosphatase activity (ACP), measured. results indicated that initially increased application, peaking an average increase 7.92–15.88%, before decreasing. optimal determined be 113 kg·P2O5·ha−1 68 kg·P2O5·ha−1, respectively. significantly lowered temperature ACP while increasing SPAD value FPAR 90 Logistic regression analysis revealed enhanced maximum (Vmax) mean (Vmean) rates, as well total accumulation. Moderate improved absorption various plant tissues promoted transfer grains. However, PRE, partial factor productivity from fertilizer (PPFP), agronomic (PAE) declined higher rates. In conclusion, fertilization utilization, optimized characteristics across different stages. Based these findings, recommended rate is between 70 110

Language: Английский

Effects of Irrigation Interval and Irrigation Level on Growth, Photosynthesis, Fruit Yield, Quality, and Water-Nitrogen Use Efficiency of Drip-Fertigated Greenhouse Tomatoes (Solanum lycopersicum L.)

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1068 - 1068

Published: April 28, 2025

The inefficient irrigation strategy is an important factor affecting the yield and water productivity of tomatoes in greenhouses, seriously hindering development cultivation industry. While impact level on tomato growth has been extensively studied, interval, another crucial component schedule, as well their interaction, remain poorly explored. There were four levels (W1: 125% ETc, W2: 100% W3: 75% W4: 50% ETc; ETc represented crop evapotranspiration) three intervals (D1: 4-day D2: 7-day D3: 10-day interval), aiming to explore effects different performance tomatoes. Here, we showed that moderate increases interval promoted root growth, improved nitrogen uptake distribution, enhanced plant height, stem diameter, leaf area index, aboveground biomass, thereby promoting net photosynthetic rate plants fruit yield. quality indicators total soluble solids, vitamin C, sugar decreased with increasing but increased decreasing interval. Higher consumption resulted lower water-nitrogen use efficiency. Overall, compared W2D2 W2D3, W2D1 by 8.0% 26.1%, respectively, 5.7% 19.3%, 7.1% 17.5%, respectively. In addition, organs then increase level, while it consistently At harvest period, followed order > stem. Taken together, (100% interval) recommended for this experiment, which can provide a theoretical basis technical support sustainable production greenhouse drip

Language: Английский