scholarly journals Effects of water and nitrogen coupling on the photosynthetic characteristics, yield, and quality of Isatis indigotica

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yucai Wang ◽  
Xiucheng He ◽  
Fuqiang Li ◽  
Haoliang Deng ◽  
Zeyi Wang ◽  
...  
Keyword(s):  
High Water ◽  
Northwest China ◽  
Field Trials ◽  
Photosynthetic Characteristics ◽  
Photosynthetic Parameters ◽  
Isatis Indigotica ◽  
Yield And Quality ◽  
Nitrogen Coupling ◽  
Nitrogen Treatments

AbstractIsatis indigotica is a commercial medicinal crop that is widely cultivated with high water and nutrient application, in the arid areas of northwest China. Rational irrigation and nitrogen application are key factors for successful crop management. The objective of this study was to determine the effect of water and nitrogen coupling on the photosynthetic characteristics, yield, and quality of Isatis indigotica produced in northwestern China. Field trials were conducted for 2 consecutive years at an irrigation test station. Data on photosynthetic parameters, yield, and quality were collected from individual Isatis indigotica for each treatment during 2018–2019. The application of nitrogen significantly increased photosynthetic rates and yield under the same irrigation conditions. However, the yields were reduced in the excess water treatments (W3N1 and W3N2) and in the excess nitrogen treatments (W1N3, W2N3, and W3N3) in contrast to the optimum W2N2 treatment. Moreover, the quality indicators of the W2N2 treatment decreased compared with CK, which was due to water stress and more photoassimilates being available to the roots, but the effective quality index value could be effectively improved by greatly increasing the yield.

scholarly journals Effects of Water and Nitrogen Coupling on Photosynthetic Characteristics, Yield and Quality of Isatis Indigotica

2021 ◽  
Author(s):  
Yucai Wang ◽  
Xiucheng He ◽  
Fuqiang Li ◽  
Haoliang Deng ◽  
Zeyi Wang ◽  
...  
Keyword(s):  
Northwest China ◽  
Field Trials ◽  
Photosynthetic Characteristics ◽  
Photosynthetic Parameters ◽  
Large Area ◽  
Isatis Indigotica ◽  
Yield And Quality ◽  
Nitrogen Coupling ◽  
Nitrogen Treatments

Abstract In arid areas of Northwest China, Isatis indigotica is a commercial medicinal crop cultivated with higher water and nutrient in a large area, which makes rational irrigation and nitrogen application key factors for successful crop management. The objective of this study was to determine the effect of water and nitrogen coupling on photosynthetic characteristics, yield, and quality of Isatis indigotica produced in northwestern China. Field trials were conducted for two consecutive years on the irrigation test station. Data on photosynthetic parameters, yield and quality were collected from individual Isatis indigotica for each treatment during the years 2018–2019. The application of nitrogen significantly increased photosynthetic rates and yield under the same irrigation conditions. However, the yield were reduced in the excess water treatments, W3N1, and W3N2 and in excess nitrogen treatments, W1N3, W2N3, W3N3, in contrast to the optimum W2N2 treatment. Moreover, the quality indicators of the W2N2 treatment decreased compared with CK, which was due to water stress and more photo-assimilates being available to the roots, but the effective quality index value cloud be effectively improved by greatly increasing the yield.

scholarly journals The effect of ecological growing on the potatoes yield and quality

2011 ◽  
Vol 51 (No. 9) ◽  
pp. 397-402 ◽  
Author(s):  
K. Hamouz ◽  
J. Lachman ◽  
P. Dvořák ◽  
V. Pivec
Keyword(s):  
Mechanical Damage ◽  
Field Trials ◽  
Matter Content ◽  
Point Of View ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Yield And Quality ◽  
Negative Effect ◽  
Cultivated Potatoes

In the years 1995–1997 the effect of ecological growing on the yield and selected parameters of quality of consumer potatoes (in comparison with conventional way) were investigated. The ecological way of growing differed in the lack of chemical protection against diseases and pests and industrial fertilizers. Field trials were realised with seven varieties (Impala, Karin, Agria, Korela, Rosella, Santé and Ornella) on two sites (Uhříněves and Valečov). The ecological way of growing had markedly negative effect on the yield (decrease by 36%). In qualitative parameters the ecological way increased inconclusively polyphenol content (by 10.2%), decreased inconclusively nitrate content (by 11.0%) and reducing sugars (by 22%). It did not affect dry matter content, resistance of tubers to mechanical damage, table value and glycoalkaloid content. Variety Santé achieved the best results from the point of view of the yield and majority of qualitative parameters among varieties. Qualitative parameters of ecologically cultivated potatoes were significantly affected by the year of cultivation.

scholarly journals Response of sugar beet to different foliar fertilizers

2008 ◽  
pp. 127-136
Author(s):  
Diána Ungai ◽  
Zoltan Győri
Keyword(s):  
Sugar Beet ◽  
Crop Production ◽  
Growing Season ◽  
Field Trials ◽  
Element Composition ◽  
Laboratory System ◽  
Foliar Fertilization ◽  
Cu Content ◽  
Yield And Quality

The yield and quality of the sugar beet are mainly determined by level crop production system; therefore the effects of foliar fertilization were studied. Our field trials were carried out in 2005  and 2006 in Hajdúböszörmény, at two experimental sites. In our trials the effects of Biomit Plussz, Fitohorm and Kelcare Cu (having high Cu content) as foliar fertilizers, as well as a fungicide with high sulphur content, Cosavet DF, were studied andcompared. Effects of treatments were studied in four replicates. We took root samples at 4 week intervals, starting in August. The quality of root (sucrose, potassium, sodium and alfa-amino N content) was determined from filtrated beet broth, by an automatic beet laboratory system, called VENEMA. Leaf samples were taken three times in the growing season, element composition was measured by ICP-OES.We found that the crop and the sugar yield were significantly influenced by the foliar treatments both of the two years.

scholarly journals The Effect of Potassium and Sulfur Fertilization on Seed Quality of Faba Bean (Vicia faba L.)

Agronomy ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 209 ◽  
Author(s):  
Przemysław Barłóg ◽  
Witold Grzebisz ◽  
Remigiusz Łukowiak
Keyword(s):  
Faba Bean ◽  
Crude Protein ◽  
Seed Quality ◽  
Field Trials ◽  
High Yield ◽  
Temperate Climate ◽  
Growth Stages ◽  
Yield And Quality ◽  
The Impact

Faba bean seeds are regarded as a highly valuable protein source for human and animal nutrition. High yield and quality of faba bean require adequate mineral nutrition. The aim of the study was to assess the impact of potassium (K) and elemental sulfur (S) on crude protein (CP) and tannin content (TC) in seeds, crude protein yield (CPY), and amino acid (AA) composition. Field trials were carried out during 2010–2013 in the temperate climate of Central Europe. The study assessed the influence of the following factors: variable soil K content and fertilization (K1, K2, K3, and K4) and elemental S application (0, 25, and 50 kg S ha−1). Plants were harvested at two growth stages to obtain immature seeds and mature seeds. K and S applications did not have a significant impact on CP and AA composition, including sulfur AA content. The TC decreased in response to increasing content of plant-available K in soil. In respect to CPY, the results indicate a positive response of faba bean to increasing K content in soil. The effect of S fertilization depended on the K treatment. The most beneficial influence of S on CPY was registered on K-poor soil.

scholarly journals Influence of increased temperature on the yield and quality of broad bean in semiarid regions of northwest China

2017 ◽  
Vol 63 (No. 5) ◽  
pp. 220-225
Author(s):  
Guoju Xiao ◽  
Qiang Zhang ◽  
Jing Wang ◽  
Fengju Zhang ◽  
Chengke Luo ◽  
...  
Keyword(s):  
Vicia Faba ◽  
Simulation Experiment ◽  
Broad Bean ◽  
Northwest China ◽  
Growing Period ◽  
Yield And Quality ◽  
Increased Temperature ◽  
Vicia Faba L ◽  
Bean Yield

In this study, a simulation experiment by farm warming with infrared ray radiator was carried out, and results showed that the broad bean (Vicia faba L.) growing days were shortened by increased temperature. The seedling, ramifying, budding, blooming, podding, and maturing stages were shortened by 1–4, 1–2, 1, 2–3, 1–2, and 2–4 days, respectively, and the whole growing period was shortened by 7–16 days when the temperature increased by 0.5–2.0°C. The broad bean yield increased by 10.1–16.6% when the temperature increased by 0.5–1.0°C, and significantly decreased by 38.1–90.1% when the temperature increased by 1.5–2.0°C. Increased temperature significantly improved the fat, carbohydrate, ash and energy contents.

scholarly journals Effects of limited irrigation water volumes on near-isohydric ‘Montepulciano’ vines trained to overhead trellis system

2020 ◽  
Vol 42 (9) ◽  
Author(s):  
Oriana Silvestroni ◽  
Alberto Palliotti ◽  
Bruno Di Lena ◽  
Vitale Nuzzo ◽  
Paolo Sabbatini ◽  
...  
Keyword(s):  
Carbon Isotope Discrimination ◽  
Sugar Content ◽  
High Water ◽  
Water Shortage ◽  
Main Shoot ◽  
Yield And Quality ◽  
Anthocyanin Concentration ◽  
Water Volumes ◽  
The Impact

Abstract The thermal increase, due to the changed climatic context, is leading to marked variations in the yield and quality of the grapes and causing an increase in the use of water resources in several viticultural areas. Nevertheless, in some environments, rainfalls are scarce and there is no water availability. In this study, we compared the impact of low water irrigation volumes (DI, replacement of 70% of crop evapotranspiration) with respect to non-irrigated vines (NI), on the physiological, yield and qualitative performances of near-isohydric variety ‘Montepulciano’, trained to overhead trellis system, which requires a high-water supply. The stomatal conductance and photosynthesis values, in basal and median leaves, were higher in DI vines. All NI leaves suffered water stress, showing in the youngest leaves (position 20 and 25 along the main shoot) higher carbon isotope discrimination (δ13C) (− 25.38‰ and 25–25.77‰, respectively). At harvest, DI vines showed yield higher of 30% and 33% than NI vines in 2005 and 2006, respectively, and 18% in 2007. In environments with prolonged water shortage and low water resource, near-isohydric ‘Montepulciano’ vines, trained to overhead trellis system and irrigated with limited volumes, determined a significant improvement of ‘vineyard efficiency’ with a yield of 19.2 t/ha with respect to 13.4 t/ha of NI vines, ensuring also more sugar content (+ 31%), anthocyanin concentration (+ 13%) and polyphenolic substances (+ 8%) than NI vines.

scholarly journals Foliar treatments of Sugar beet

2007 ◽  
pp. 55-59
Author(s):  
Diána Ungai ◽  
Éva Széles ◽  
Zoltán Győri
Keyword(s):  
Sugar Beet ◽  
Production System ◽  
Field Trials ◽  
Foliar Nutrients ◽  
Plant Production ◽  
Laboratory System ◽  
Mineral Fertilization ◽  
Potassium Sodium ◽  
Yield And Quality

The yield and quality of the sugar beet are mainly determined by the plant production system, thus we studied the effect of mineral fertilization. Our field trials were carried out in 2005 and 2006 in Hajdúböszörmény, at two sites. We studied the effect of sulphur (Cosavet DF), copper (Kelcare Cu) and two foliar nutrients with high active agents. Treatments were replicated four times.We took root and leaf samples at 4 week intervals, starting in August. The quality of root (sucrose, potassium, sodium and alfaamino N content) was determined from filtrated beet broth, by an automatic beet laboratory system, called VENEMA. Leaf samples were measured with ICP-OES.We found that the crop and the sugar yield were significantly influenced by the foliar treatments. 

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