samples was mixed with 0.3 g CuSO 4 , 3 g anhydrous Na 2 SO 4 , and 10 to 12 mL concentrated H 2 SO 4 . After digestion and dissolution, the N content was assayed using a Kjeldahl nitrogen apparatus (K9860; Hanon instruments Co., Ltd., Jinan, China
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Yan-xin Duan, Ying Xu, Ran Wang, and Chun-hui Ma
Chi D. Nguyen, Matthew Creech, Diying Xiang, German Sandoya, Dean Kopsell, and Heqiang Huo
photosynthetic measurements were recorded ∼3 to 5 min or when CO 2 concentrations in the sample infrared gas analyzer had stabilized between 0930 and 1430 HR. Lettuce head fresh weight (HFW) was recorded immediately after the root was detached at harvest, and
Rangjian Qiu, Yuanshu Jing, Chunwei Liu, Zaiqiang Yang, and Zhenchang Wang
, have not been documented. In addition, we studied Na + , K + , and Ca 2+ concentrations and K + /Na + ratio in hot peppers to further understand the mechanisms causing the effects of the EC iw and LF on yield and quality. The objectives of this study
Edward J. Nangle, David S. Gardner, James D. Metzger, John R. Street, and T. Karl Danneberger
) (DS = 0.39); 2) black perforated cloth acting as neutral density shade that reduced PPF by ≈90% but did not alter the R:FR (NS = 1.28) (Dewitt Co., Sikeston, MO); and 3) under full sun with a similar R:FR (FS = 1.30) within ≈20 m of the NS. The three
Jessie M. Godfrey, Louise Ferguson, and Maciej A. Zwieniecki
per row) were selected randomly for measurements of photosynthesis ( A n ), stomatal conductance ( g S ), intercellular CO 2 concentration ( C i ), the pressure required to balance stem water potential at midday, and evapotranspiration. Gas exchange
Augusto Ramírez-Godoy, María del Pilar Vera-Hoyos, Natalia Jiménez-Beltrán, and Hermann Restrepo-Díaz
concentration (0.24%) was greater in seedlings treated with foliar Si than in the other treatments (about 0.2%). In the test on tahiti lime trees, the nutritional status (leaf macronutrient and micronutrient concentrations) was unaffected by any Si treatment
Jean-Pierre Privé, Lindsay Russell, and Anita LeBlanc
leaf temperature and gas exchange responses [Pn, stomatal conductance ( g s ), intercellular CO 2 (Ci), and transpiration (E)] of ‘Ginger Gold’ apple [ Malus × sylvestris (L.) Mill var. domestica (Borkh.) Mansf.] leaves to a kaolin particle film
Huihui Zhang, Ping Yu, Min Song, Dalu Li, Qianqian Sheng, Fuliang Cao, and Zunling Zhu
, net photosynthetic rate ( P n ), transpiration rate ( T r ), stomatal conductance ( g S ), and intercellular CO 2 concentration ( C i ) of each cultivar were measured using a British PP-Systems Portable Photosynthesis Analyzer (Ciras-2, Shanghai
R. Paul Schreiner and Tian Tian
that morning while the dry vines had not been watered for 2–3 d. Destructive harvests at 8 and 16 weeks were used to determine the dry mass and nutrient concentrations in all plant parts. The new shoots were cut at the basal end of the stem, and stems
Eugenie-Lien Louw, Eleanor W. Hoffman, Karen I. Theron, and Stephanie J.E. Midgley
were taken on a single intact leaf of the terminal mature flush of the seven autumn-initiated shoots and the 23 spring-initiated shoots. On 30 Oct. 2008, the photosynthetic response to intercellular CO 2 concentration ( A / c i response curves) was