scholarly journals Plant Biostimulants: A Categorical Review, Their Implications for Row Crop Production, and Relation to Soil Health Indicators

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1297
Author(s):  
Connor N. Sible ◽  
Juliann R. Seebauer ◽  
Frederick E. Below
Keyword(s):  
Growth And Development ◽  
Crop Production ◽  
Nutrient Management ◽  
Soil Health ◽  
Health Indicators ◽  
Crop Growth ◽  
Current Status ◽  
Crop Species ◽  
Row Crop ◽  
Crop Growth And Development

Plant biostimulants are specialty products used to increase crop production and are quickly becoming common in the agricultural seed and chemical marketplace. Unlike traditional crop inputs, such as fertilizers or pesticides, biostimulants are unique in that a single product may have multiple avenues for influencing crop growth and development based on both the timing and the placement of application. This review presents a summary of the current status and descriptions of plant biostimulants with available literature on their uses in the row crop production of maize (Zea mays L.), soybean (Glycine max (L.) Merr.), wheat (Triticum aestivum), and other major crop species. Biostimulants have much potential to improve crop production through enhanced yields, grain quality, and increased sustainability of agronomic production systems, particularly in relation to nutrient management. However, there is great variability in the efficacy of biostimulants and a limited understanding of the mechanisms responsible in field-tested scenarios where differences are observed. These unknown mechanisms may align with the recognized soil health indicators, providing opportunities for unrealized biostimulant potential beyond crop growth and development. This review aims to identify the predominant types of crop biostimulants, the known understandings of their modes of action, and examples of their current field efficacy with an outlook for their future.

scholarly journals Crop growth and development affect seasonal priorities for lucerne management

2003 ◽  
Vol 11 ◽  
pp. 201-208
Author(s):  
D.J. Moot ◽  
H.E. Brown ◽  
E.I. Teixeira ◽  
K.M. Pollock
Keyword(s):  
Growth And Development ◽  
Crop Production ◽  
Maximum Yield ◽  
Extended Period ◽  
Crop Growth ◽  
Stand Management ◽  
Available Water Content ◽  
Root Reserves ◽  
The Impact ◽  
Crop Growth And Development

Successful lucerne stand management requires balancing animal and plant requirements to produce crops of high quality and yield at times of high animal demand. Understanding the impact of environmental signals on crop growth and development can aid management decisions throughout the season. In spring, crops remobilise reserves from the roots to shoots and expand nodes accumulated through the winter, producing rapid stem extension and canopy closure as temperatures increase. The timing of spring defoliation should be based on crop yield and animal requirements rather than any specific developmental stage. Through spring and summer, crops should be rotationally grazed, with highest lamb live-weights achieved from 6-8 weeks grazing solely on lucerne. Summer crop production is dependent on rainfall and the plant available water content. During summer, grazing at the appearance of open flowers or basal buds is recommended as a compromise between maximum yield and quality. In autumn, the priority of assimilates allocation in the crop changes from above to below ground growth. To enhance the recharge of root reserves, an extended period of flowering is recommended in February or March. The time of flowering is dependent on the accumulation of thermal time and increases as photoperiod shortens. In periods of prolonged drought, lucerne herbage should be hard grazed and then spelled until the end of late autumn regrowth. A final hard grazing in June or early July, to remove overwintering aphids, should be followed by spraying 7-14 days later. Crops continue to develop nodes through the winter, and stands should be spelled until spring to ensure nodes are not removed by grazing, as this delays regrowth and reduces dry matter production. Key words: Flowering, grazing, herbicide, Medicago sativa, nodes, photoperiod, phyllochron, root reserves

Crop growth and development dynamics of two fodder beet (Beta vulgaris L.) cultivars sown on different dates in New Zealand

2019 ◽  
Vol 63 (3) ◽  
pp. 449-466 ◽  
Author(s):  
Edith N. Khaembah ◽  
Shane Maley ◽  
Mike George ◽  
Emmanuel Chakwizira ◽  
John de Ruiter ◽  
...  
Keyword(s):  
New Zealand ◽  
Beta Vulgaris ◽  
Growth And Development ◽  
Crop Growth ◽  
Fodder Beet ◽  
Crop Growth And Development

Sources with Different Spectra Radiation Influence on Plants Growth and Development

2014 ◽  
Vol 1040 ◽  
pp. 830-834 ◽  
Author(s):  
Alexey N. Yakovlev ◽  
S.B. Turanov ◽  
I.N. Kozyreva ◽  
Darja V. Starodubtseva
Keyword(s):  
Growth And Development ◽  
Light Emitting Diodes ◽  
Experimental Studies ◽  
Crop Growth ◽  
Light Emitting ◽  
Differential Characteristic ◽  
Crop Growth And Development

The article contains results of experimental studies, concerning the influence of sources with different spectra radiation on lettuce crop growth and development. The differential characteristic of the research is the use of RGBW light emitting diodes (LED) based modules. Prospects of LED based modules for radiation of plants are shown.

scholarly journals Soil Health as Influenced by Fertilizer Management in Rice Based Cropping System

2021 ◽  
Vol 24 (2) ◽  
pp. 119-131
Author(s):  
MM Haque ◽  
MR Islam ◽  
MS Rahman ◽  
MAR Sarkar ◽  
MAA Mamun ◽  
...  
Keyword(s):  
Crop Production ◽  
Nutrient Management ◽  
Soil Health ◽  
Cropping System ◽  
Crop Productivity ◽  
Cow Dung ◽  
Wet Season ◽  
Management Options ◽  
Cropping Patterns ◽  
Soil C

Nutrient management influences soil health and crop productivity. Sustained crop production re-quires specific nutrient management options after a certain period. The objectives of this investigation were to examine the effects of inorganic and organic fertilization on yields and soil carbon budget under rice based cropping patterns in Bangladesh. The research data and informationhave been gen-erated based on previouslypublished, unpublished sources and own concept.Omission of K or im-balanced K are more influential for reduction in grain yield up to 47% in Boro (dry) season but N was most limiting up to 35% in T. Aman (wet) season. With existing fertilizer rates for growing rice, the balances of N and K are always negative. Balanced chemical fertilizer (NPKSZn) can be an option for improving crop productivity and maintain soil quality. Net ecosystem carbon (C) balances are posi-tive when 3 t ha-1 cow dung (CD), 2 t ha-1 poultry manure (PM) and 2 t ha-1 vermicompost (VC) are used in combination with chemical fertilizers. Soil amendments with organic nutrient sources (rice straw, CD, PM, VC, legume crops) and rice based cropping patterns such as T. Aman-Mustard-Boro, Boro-Fallow-Fallow, Jute-T. Aman-Fallow, Wheat-Mungbean-T. Aman, Grass pea- T. Aus-T. Aman and Potato-Boro-T. Aman can be beneficial in improving soil C budget, soil nutrient ratio, total crop production and maintenance of environmental health that will meet SDGs goal. Bangladesh Rice J. 24 (2): 119-131, 2021

Novel approaches to mitigate heat stress impacts on crop growth and development

2020 ◽  
Vol 25 (4) ◽  
pp. 627-644 ◽  
Author(s):  
Shulbhi Verma ◽  
Narendra Kumar ◽  
Amit Verma ◽  
Hukum Singh ◽  
Kadambot H. M. Siddique ◽  
...  
Keyword(s):  
Heat Stress ◽  
Growth And Development ◽  
Crop Growth ◽  
Novel Approaches ◽  
Crop Growth And Development
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