scholarly journals Influence of Wavelength of Light on Growth, Yield and Nutritional Quality of Greenhouse Vegetables

2019 ◽  
Vol 73 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Margit Olle ◽  
Ina Alsiņa
Keyword(s):  
Nutritional Quality ◽  
Developmental Stages ◽  
Red Light ◽  
Growth Yield ◽  
Pigment Concentration ◽  
Light Spectrum ◽  
Nutrient Quality ◽  
Plant Yield ◽  
Uva Light

Abstract All previous reviews of research on light-emitting diodes (LEDs) have been focused on how different light spectra generally influence plant yield and quality. There are no or almost no reviews on the effect of spectra on sugars or pigment concentration, or yield and growth etc. The role of visible light in food production, as in agriculture and horticulture, is obvious, as light drives photosynthesis, which is crucial for plant growth and development. Solid state lighting using LEDs represents a fundamentally different technology from gaseous discharge-type lamps currently in use. LEDs are important lamp types because the concentration of the light spectrum they emit can be changed to provide plants at various developmental stages with the light spectrum needed. A great deal of studies have been done on the effect of wavelengths of light on growth, yield and nutritional quality of greenhouse vegetables. However, little is known about the mechanisms by which the spectra affect sugar and pigment concentration, and yield, and growth. This article provides a list of how spectra influence the yield, growth, and nutritional quality of greenhouse-grown vegetables. Based on the given information we can conclude that blue, green, and red light are the main light colours that influence positively plant yield, growth and nutrient quality. Sometimes in specific situations, some other light colours are also beneficial, like far red light, orange light and UVA light. Future work on light colour manipulation has potential for producing lamps and greenhouse covers that better support plant yield, growth, and nutrition.

Synergistic effect of microbial and nonmicrobial biostimulants on growth, yield, and nutritional quality of organic tomato

Crop Science ◽  
2020 ◽  
Vol 60 (4) ◽  
pp. 2102-2114
Author(s):  
Md. Nasir Hossain Sani ◽  
Md. Nazrul Islam ◽  
Jasim Uddain ◽  
Md. Shah Newaz Chowdhury ◽  
Sreeramanan Subramaniam
Keyword(s):  
Synergistic Effect ◽  
Nutritional Quality ◽  
Growth Yield

scholarly journals The Effect of Supplemental Blue, Red and Far-Red Light on the Growth and the Nutritional Quality of Red and Green Leaf Lettuce

2019 ◽  
Vol 10 (12) ◽  
pp. 2219-2235
Author(s):  
Myungjin Lee ◽  
Jingwen Xu ◽  
Weiqun Wang ◽  
C. B. Rajashekar
Keyword(s):  
Nutritional Quality ◽  
Red Light ◽  
Green Leaf ◽  
Leaf Lettuce

scholarly journals Black Soldier Fly-Composted Organic Fertilizer Enhances Growth, Yield, and Nutrient Quality of Three Key Vegetable Crops in Sub-Saharan Africa

2021 ◽  
Vol 12 ◽  
Author(s):  
Abel O. Anyega ◽  
Nicholas K. Korir ◽  
Dennis Beesigamukama ◽  
Ghemoh J. Changeh ◽  
Kiatoko Nkoba ◽  
...  
Keyword(s):  
Nutritional Quality ◽  
Crude Protein ◽  
Organic Fertilizer ◽  
Growth Yield ◽  
Control Treatment ◽  
Vegetable Crops ◽  
French Beans ◽  
Use Efficiency ◽  
N Use

Worldwide, French beans (Phaseolus vulgaris L.), tomato (Solanum lycopersicum L.), and kales (Brassica oleracea L. var. acephala) are considered economically important food crops. There is a rapid decline in their yield due to severe soil degradation. Thus, high commercial fertilizer inputs are crucial, though they remain expensive and inaccessible to resource poor farmers. We investigated the comparative performance of composted black soldier fly frass fertilizer (BSFFF), conventionally composted brewer's spent grain (BSG), commercial organic fertilizer (Evergrow), and mineral [nitrogen, phosphorus, and potassium (NPK)] fertilizer on growth, yield, N use efficiency, and nutritional quality (crude protein, crude fiber, crude fats, ash, and carbohydrate concentrations) of tomatoes, kales, and French beans under greenhouse and open-field conditions for two seasons. The fertilizers were applied at rates equivalent to 371 kg of N ha−1. For each crop, the plots were treated with sole rates of BSFFF, BSG, Evergrow, and NPK to supply 100% of the N required. Additional treatments included a combination of BSFFF and NPK, and BSG and NPK so that each fertilizer supplies 50% of the N required. The control treatment consisted of unfertilized soil. Results show that vegetable yields achieved using a combination of BSFFF and NPK were 4.5, 2.4, and 5.4-folds higher than the yield from the control treatment for tomatoes, kales, and French beans, respectively. The combined application of BSFFF and NPK produced 22–135%, 20–27%, and 38–50% higher yields than sole NPK for tomatoes, kales, and French beans, respectively, under both greenhouse and open-field conditions. The highest agronomic N use efficiency was achieved in sole BSFFF-treated plots compared to sole BSG and Evergrow. The N taken up by the vegetables was significantly higher when BSFFF and NPK were integrated. Vegetables grown using a combination of BSFFF and NPK had the highest crude protein and ash concentrations. Our findings demonstrate that the integration of BSFFF and NPK in vegetable cropping systems at the recommended rate of 1.24 t ha−1 BSFFF and 322 kg ha−1 NPK would improve soil health, boost yield, and nutritional quality of vegetable crops.

scholarly journals Effect of the age of the pupal holotissue on the nutritional quality of artificial diets for Trichogramma spp. (Hymenoptera: Trichogrammatidae)

2000 ◽  
Vol 29 (3) ◽  
pp. 555-563 ◽  
Author(s):  
Fernando L. Cônsoli ◽  
José R.P. Parra
Keyword(s):  
Nutritional Quality ◽  
Developmental Stages ◽  
Egg Yolk ◽  
Artificial Diets ◽  
Age Classes ◽  
Factors Affecting ◽  
Fetal Serum ◽  
Bovine Fetal Serum

The nutritional quality of artificial diets composed of pupal holotissues of Diatraea saccharalis (Fabr.) (Lep.: Crambidae) from three different age classes (1-2, 3-4 and 5-6 days old) were tested for rearing Trichogramma galloi Zucchi and T. pretiosum Riley (Hym.: Trichogrammatidae) in vitro. Pupal holotissues were added to egg yolk, bovine fetal serum, lactoalbumine hydrolysate and preservatives, and offered to the parasitoids into artificial eggs. The quality of these diets in supporting the development of both parasitoids was evaluated by assessing the acceptance and parasitism of the artificial host eggs, larval and pupal survival, size, parasitism capacity and longevity of the in vitro-reared females, and the presence of deformed adults. Diets composed of 5-6 d old pupal holotissues did not support the larval development of both parasitoids as well as reduced the acceptance and/or parasitism of artificial eggs by T. galloi and T. pretiosum. The factors affecting the nutritional quality of pupal holotissues collected from different developmental stages are discussed.

scholarly journals Utilization of seaweed (Sargassum vulgare) extract to enhance growth, yield and nutritional quality of red radish plants

2019 ◽  
Vol 64 (2) ◽  
pp. 167-175 ◽  
Author(s):  
Sami H. Mahmoud ◽  
Dina M. Salama ◽  
Ahmed M.M. El-Tanahy ◽  
Emad H. Abd El-Samad
Keyword(s):  
Nutritional Quality ◽  
Growth Yield ◽  
Sargassum Vulgare ◽  
Red Radish

scholarly journals Exogenous Application of Thiourea for Improving the Productivity and Nutritional Quality of Bread Wheat (Triticum aestivum L.)

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1432
Author(s):  
Ahmad Sher ◽  
Xiukang Wang ◽  
Abdul Sattar ◽  
Muhammad Ijaz ◽  
Sami Ul-Allah ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Nutritional Quality ◽  
Arid Regions ◽  
Sandy Loam ◽  
Growth Yield ◽  
Triticum Aestivum L ◽  
Growth Stages ◽  
Exogenous Application ◽  
Semi Arid

Because it is a staple food, sustainable production of wheat is crucial for global food security. Arid and semi-arid regions are worst affected by climate change, which has resulted in poor productivity of different crops, including wheat. To this end, this study aimed to investigate the effect of foliage-applied thiourea on the growth, yield, and nutritional-quality-related traits of bread wheat. The treatments consisted of thiourea levels (control, 500, and 1000 mg L−1) factorally combined with two diverse wheat cultivars (Gandam-1 and Galaxy-2013) at different growth stages (tillering, booting, and heading) and was repeated over two years. The analysis of the data shows that thiourea treatments and the cultivars significantly (p ≤ 0.05) affected the growth, nutritional quality traits, and morphological traits, and the interaction of the two factors was also significant. Improvement in productivity and nutritional quality was observed from the application of thiourea in both cultivars. Galaxy-2013 performed best at 1000 mg L−1 thiourea application for both productivity- and nutritional-quality-related traits at the heading stage. In conclusion, exogenous application of thiourea improves the productivity and nutritional quality of wheat on sandy loam soils in semi-arid regions; however, for wider recommendations, more trials may be conducted across various agro-ecological regions.

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