a soil that is already saturated with P and DOC losses typically occur when manures or biosolids are applied as fertilizer ( Schnell et al., 2010 ). Nitrogen and P movement from terrestrial to aquatic ecosystems may contribute to surface water and
Mehlich 3 extracts of soil. Organic carbon and δ 13 C analysis. An OI Analytical Model 700 total organic C analyzer (O-I-Analytical, College Station, TX) was used to quantify DOC in leachate. A Carlo Erba EA-1108 interfaced with a Delta Plus isotope ratio
met, shortages will have a negative impact on rose geranium oil yield and quality ( Araya, 2012 ). For instance, lack of nitrogen leads to poor yield and reduced chlorophyll content of rose geranium ( Sedibe and Allemann, 2012 ; Welch et al., 1993
:N ratio and the risk of nitrogen (N) immobilization. Recent interest in wood chip incorporation is the result of environmental rather than agricultural concerns. As an alternative to burning, almond pruning wood has been chipped and incorporated into
nitrogen (SLAN) tests were conducted according to Woods End Laboratories guidelines ( Brinton, 2019a , 2019b ). Active carbon measurements were determined following UIUC Soils Laboratory POXC procedure (SOP. POXC 2021). Analysis of variance (ANOVA) was
the flowering of woody plants ( Pharis and King, 1985 ), and a low level of GA 3 was beneficial to flower induction ( Xing et al., 2014 , 2016 ); however, spraying GA 3 could break the ZR/GA ratio to suppress the expression of MdSPL genes and
(Garden-Ville, unpublished data). Compost quality test results. Results of the compost quality tests indicated that pH, soluble salt content, total nitrogen, total carbon, carbon-to-nitrogen ratio, particle size, and bioassay measurements of all samples
(TNSC) and nitrogen (N), and the carbon-to-nitrogen ratio (C/N) in leaves of strawberry plants that received N fertigation only (fertigation) or fertigation + urea applied as a foliar spray in fall (fertigation + foliar urea). z Fig. 1
931901; Thermo Fisher Scientific, Waltham, MA). The ratio of nitrogen and potassium to EC was determined for each sample. In 2004, these ratios varied from 20 to 60 mg·L −1 per dS·m −1 for nitrogen and from 20 to 95 mg·L −1 per dS·m −1 for potassium
2005 and Nov. 2005 was estimated by subtracting the average nutrient content of each cultivar in May 2005 from the nutrient content of individual plants in Nov. 2005. Nitrogen ratios (ratios of N to other nutrients) in leaves and total plant were