scholarly journals Soil Amendment Using Biochar and Application of K-Humate Enhance the Growth, Productivity, and Nutritional Value of Onion (Allium cepa L.) under Deficit Irrigation Conditions

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2598
Author(s):  
Khaled G. Abdelrasheed ◽  
Yasser Mazrou ◽  
Alaa El-Dein Omara ◽  
Hany S. Osman ◽  
Yasser Nehela ◽  
...  
Keyword(s):  
Drought Stress ◽  
Allium Cepa ◽  
Water Scarcity ◽  
Deficit Irrigation ◽  
Soil Amendment ◽  
Nutritional Value ◽  
Foliar Application ◽  
Field Trials ◽  
Global Challenge ◽  
Allium Cepa L

Water scarcity, due to physical shortage or inadequate access, is a major global challenge that severely affects agricultural productivity and sustainability. Deficit irrigation is a promising strategy to overcome water scarcity, particularly in arid and semiarid regions with limited freshwater resources. However, precise application of deficit irrigation requires a better understanding of the plant response to water/drought stress. In the current study, we investigated the potential impacts of biochar-based soil amendment and foliar potassium-humate application (separately or their combination) on the growth, productivity, and nutritional value of onion (Allium cepa L.) under deficient irrigation conditions in two separate field trials during the 2018/2019 and 2019/2020 seasons. Our findings showed that deficit irrigation negatively affected onion resilience to drought stress. However, these harmful effects were diminished after soil amendment using biochar, K-humate foliar application, or their combination. Briefly, integrated biochar and K-humate application increased onion growth, boosted the content of the photosynthetic pigments, enhanced the water relations, and increased the yield traits of deficient irrigation onion plants. Moreover, it improved the biochemical response, enhanced the activities of antioxidant enzymes, and enriched the nutrient value of deficiently irrigated onion plants. Collectively, these findings highlight the potential utilization of biochar and K-humate as sustainable eco-friendly strategies to improve onion resilience to deficit irrigation.

scholarly journals Effects of Enzymatic Biofertiliser on Growth and Yield of Lentil Genotypes under Deficit Irrigation/ Enzimatisko Biomçslojumu Ietekme Uz Daþâdu Lçcu Genotipu Augðanu Un Raþu Irigâcijas Trûkuma Apstâkïos

2014 ◽  
Vol 68 (3-4) ◽  
pp. 174-179
Author(s):  
Mohsen Janmohammadi ◽  
Hamid Mostafavi ◽  
Naser Sabaghnia
Keyword(s):  
Drought Stress ◽  
Grain Yield ◽  
Deficit Irrigation ◽  
Morphological Traits ◽  
Foliar Application ◽  
Growth And Yield ◽  
Sowing Time ◽  
Ecological Zones ◽  
Terminal Drought ◽  
Terminal Drought Stress

Abstract Lentil (Lens culinaris Medic.) is one of the important pulse crops in semiarid agro-ecological zones with a Mediterranean-type climate. Terminal drought stress and poor plant nutrition are important factors limiting crop under these regions. The effects of enzymatic biofertiliser (MOG) application at sowing time or during reproductive stage on some morphological traits and yield components of eight lentil lines were evaluated under deficit-irrigation conditions at Maragheh (37°23' N; 46°16' E) in northwestern Iran. Results revealed that application of biofertiliser did not significantly affect most of the morphological traits. However, foliar application of MOG during early flowering stage somewhat increased 100-grain weight and grain yield and decreased the number of empty pod per plant. Moreover, the results indicated that there was significant diversity between lentil lines for the investigated traits. The best performance for grain yield was recorded for FLIP 86-35L. The overall lack of considerable response of lentil to the MOG treatments may suggest that the optimal efficiency of biofertiliser cannot be achieved under water scarcity conditions. Improvement in the adaptation of enzymatic fertilisers to semi arid regions with terminal drought stress requires to be increased.

Effects of Deficit Irrigation and Mulching on Seed Yield and Water Use of Onion (Allium cepa L.)

2017 ◽  
Vol 20 (3) ◽  
pp. 1-10
Author(s):  
S Biswas ◽  
D Roy ◽  
K Sarkar ◽  
A Milla ◽  
K Murad ◽  
...  
Keyword(s):  
Water Use ◽  
Allium Cepa ◽  
Seed Yield ◽  
Deficit Irrigation ◽  
Allium Cepa L

scholarly journals Growth, yield and bulb quality of onion (Allium cepa L.) in response to foliar application of boron and zinc

2014 ◽  
Vol 11 (1) ◽  
pp. 149-153 ◽  
Author(s):  
D Manna
Keyword(s):  
Allium Cepa ◽  
Foliar Application ◽  
Growth Yield ◽  
Allium Cepa L

No abstract availableDOI: http://dx.doi.org/10.3329/sja.v11i1.18391 SAARC J. Agri., 11(1): 149-153 (2013) 

scholarly journals Effect of Humic Substances on Nutrient Status and Yield of Onion (Allium Cepa L.) in Field Conditions

2012 ◽  
Vol 66 (4-5) ◽  
pp. 192-199
Author(s):  
Anita Osvalde ◽  
Andis Karlsons ◽  
Gunta Čekstere ◽  
Solveiga Maļecka
Keyword(s):  
Humic Substances ◽  
Allium Cepa ◽  
Field Experiments ◽  
Foliar Application ◽  
Farming Systems ◽  
Nutrient Status ◽  
Climate Conditions ◽  
Allium Cepa L ◽  
One Year ◽  
The Impact

Humic substances (HS) extracted from various organic materials have been shown to stimulate plant growth. However, scarce information is available on the impact of different methods of application of HS on nutrient status of vegetable species, especially in soil and climate conditions of the temperate zone. The goal of the present study was to evaluate the effect of pre-plant (bulblet soaking) and foliar application of commercially-produced peat and vermicompost-derived HS preparations on nutrient status and yield of onion (Allium cepa L.) in field experiments using two farming systems - conventional and organic. Although the effect was variable between nutrients, dependent on timing, application methods and farming systems, pre-plant and foliar HS tested was hardly effective in preventing nutrient (S, Zn, B) deficiencies limiting onion yield. Moreover, HS induced changes that significantly reduced nutrient status of organically grown onion and had detrimental effect on yield. Although one-year results did not suggest a benefit from HS application, further studies are necessary to evaluate the possible effectiveness of peat and vermicompost extracts on onion production in Latvia.

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