Seasonal Changes in the Mineral Nutrient Concentrations of Different Plant Organs of Pistachio Trees in Alternate Bearing “On” and “Off” Years

2021 ◽  
Author(s):  
Muhammet Ali Gündeşli ◽  
Nesibe Ebru Kafkas ◽  
Murat Güney ◽  
Salih Kafkas
Keyword(s):  
Seasonal Changes ◽  
Mineral Nutrient ◽  
Nutrient Concentrations ◽  
Alternate Bearing ◽  
Plant Organs ◽  
Pistachio Trees

scholarly journals Seasonal changes in water quality and macrophytes and the impact of cattle on tropical floodplain waterholes

2012 ◽  
Vol 63 (9) ◽  
pp. 788 ◽  
Author(s):  
N. E. Pettit ◽  
T. D. Jardine ◽  
S. K. Hamilton ◽  
V. Sinnamon ◽  
D. Valdez ◽  
...  
Keyword(s):  
Water Quality ◽  
Seasonal Changes ◽  
Aquatic Macrophyte ◽  
Plant Cover ◽  
Critical Role ◽  
Dry Season ◽  
Nutrient Concentrations ◽  
Wet Season ◽  
Dry Tropics ◽  
The Impact

The present study indicates the critical role of hydrologic connectivity in floodplain waterholes in the wet–dry tropics of northern Australia. These waterbodies provide dry-season refugia for plants and animals, are a hotspot of productivity, and are a critical part in the subsistence economy of many remote Aboriginal communities. We examined seasonal changes in water quality and aquatic plant cover of floodplain waterholes, and related changes to variation of waterhole depth and visitation by livestock. The waterholes showed declining water quality through the dry season, which was exacerbated by more frequent cattle usage as conditions became progressively drier, which also increased turbidity and nutrient concentrations. Aquatic macrophyte biomass was highest in the early dry season, and declined as the dry season progressed. Remaining macrophytes were flushed out by the first wet-season flows, although they quickly re-establish later during the wet season. Waterholes of greater depth were more resistant to the effects of cattle disturbance, and seasonal flushing of the waterholes with wet-season flooding homogenised the water quality and increased plant cover of previously disparate waterholes. Therefore, maintaining high levels of connectivity between the river and its floodplain is vital for the persistence of these waterholes.

scholarly journals Seasonal Changes of Nutrient Concentrations in Water of Some Locations in Southern Iraqi Marshes, After Restoration.

2009 ◽  
Vol 6 (4) ◽  
pp. 711-718
Author(s):  
Baghdad Science Journal
Keyword(s):  
Seasonal Changes ◽  
T Test ◽  
Nutrient Concentrations ◽  
P Value ◽  
Statistical Program ◽  
Nutrients Concentration ◽  
Colorimetric Methods

After restoration of Iraqi marshes during 2003, three locations were chosen, one in each main marsh (Um Al-Naaj site in Al-Hwaizeh marsh; Al-Nagarah site in Al-Hammar marsh and Al-Baghdadia site in Al-Chebaysh marsh) to determine the concentrations of nutrients (Nitrate, Nitrite, Phosphate and Silicate) in water seasonally for the period winter, spring, summer, and autumn at 2007. Five water replicates were collected from each site, seasonally. In the Lab., the samples were analyzed by colorimetric methods; the results showed that Um-Al-Naaj site has the highest nutrients level, while Al-Nagarah site has the lowest level. The statistical program t-test was applied at the significant levels (P-value < 0.01) and (P-value < 0.05) to know the significant differences in the nutrients concentration among the sites, as well as among the seasons. Statistically, the results showed that NO3, NO2, and PO4 concentrations have significant differences among the sites, as well as among the seasons. While, SiO2 concentrations have no significant differences among the sites, but they differed significantly among the seasons.

Variability in crude protein and mineral nutrient concentrations of almonds

2018 ◽  
pp. 213-218 ◽  
Author(s):  
T. Gama ◽  
H.M. Wallace ◽  
S.J. Trueman ◽  
S.H. Bai
Keyword(s):  
Crude Protein ◽  
Mineral Nutrient ◽  
Nutrient Concentrations

scholarly journals Chemical Diversity of Bastard Balm (Melittis melisophyllum L.) as Affected by Plant Development

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2421
Author(s):  
Izabela Szymborska-Sandhu ◽  
Jarosław L. Przybył ◽  
Olga Kosakowska ◽  
Katarzyna Bączek ◽  
Zenon Węglarz
Keyword(s):  
Essential Oil ◽  
Chlorogenic Acid ◽  
Phenolic Acids ◽  
Plant Development ◽  
Seasonal Changes ◽  
Chemical Diversity ◽  
Coumaric Acid ◽  
Seed Setting ◽  
Plant Organs ◽  
Full Flowering

The phytochemical diversity of Melittis melissophyllum was investigated in terms of seasonal changes and age of plants including plant organs diversity. The content of phenolics, namely: coumarin; 3,4-dihydroxycoumarin; o-coumaric acid 2-O-glucoside; verbascoside; apiin; luteolin-7-O-glucoside; and o-coumaric; p-coumaric; chlorogenic; caffeic; ferulic; cichoric acids, was determined using HPLC-DAD. Among these, luteolin-7-O-glucoside, verbascoside, chlorogenic acid, and coumarin were the dominants. The highest content of flavonoids and phenolic acids was observed in 2-year-old plants, while coumarin in 4-year-old plants (272.06 mg 100 g–1 DW). When considering seasonal changes, the highest content of luteolin-7-O-glucoside was observed at the full flowering, whereas verbascoside and chlorogenic acid were observed at the seed-setting stage. Among plant organs, the content of coumarin and phenolic acids was the highest in leaves, whereas verbascoside and luteolin-7-O-glucoside were observed in flowers. The composition of essential oil was determined using GC-MS/GC-FID. In the essential oil from leaves, the dominant was 1-octen-3-ol, whilst from flowers, the dominant was α-pinene.

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