Isozyme Pattern of the Metalloenzyme System Superoxide Dismutase During Growth of Peas (Pisum sativum L.) Under Different Iron Nutrient Concentrations

Pea (Pisum sativum L.) leaf chlorophyll and pigments syntheses are retarded under nutritional stress. Biochar has the potential to regulate soil nutrient supplies and optimize plant nutrient uptakes. We examine the role of Pongamia pinnata L. waste leaf biochar (PLB) in improving vegetative growth and leaf chlorophyll and accessory pigments of pea exposed to nutritional stress. Three PLB application rates (0, 1, and 2%) crossed with half (HF), and full NPK fertilizer (FF) recommended doses were applied to sandy soil field-pots (arranged in a completely randomized design). There were significant or maximum increases in plant vegetative or physiological traits, including the fresh or dry, above- and below-ground biomass weights, and photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, and anthocyanin) in response to a 2%PLB + FF application (p = 0.002). Trait values also responded to 2%PLB + HF, which signified the nutrient regulatory character of PLB (p = 0.038). The PLB-driven reduction in nutritional stress resulted in diminished lycopene (antioxidant) content (p = 0.041). Therefore, we suggest that the soil application of 2%PLB + FF has the greatest impact on pea vegetative growth and leaf chlorophyll, carotenoids, anthocyanin, and lycopene contents in Pisum sativum L. Further research is recommended to investigate the relationship of PLB with soil nutrient availabilities and plant nutrient concentrations.

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Nutrient concentrations and nutritive value of field pea (Pisum sativum L.) straw in south central Alberta

Canadian Journal of Plant Science ◽

10.4141/p00-058 ◽

2001 ◽

Vol 81 (3) ◽

pp. 419-423 ◽

Cited By ~ 1

Author(s):

M. A. Olson ◽

R. -C. Yang ◽

S. F. Blade

Keyword(s):

Pisum Sativum ◽

Nutritive Value ◽

Environmental Variation ◽

Field Pea ◽

Nutrient Concentrations ◽

Average Value ◽

Specialty Crop ◽

South Central ◽

Pisum Sativum L ◽

Nutritive Composition

The development of field pea as a major specialty crop in western Canada has led to questions regarding the nutritive value of its straw component. The objective of this study was to examine the nutrient composition of field pea straw collected from south central Alberta variety trials. Our analysis focused on four varieties grown on four locations for the period between 1995 and 1997. Five nutrients were examined: CP, Ca, P, ADF and NDF. There were significant year × location interaction effects for concentrations of all five nutrients. Location-to-location differences were considerably inconsistent across the years. The environmental variation in nutrients of pea straw requires that the optimal strategy of managing the pea straw (particularly using it as part of cattle feed) be based on an extensive sampling of the straw over diverse environments rather than on the average value. Key words: Nutritive composition, field pea straw, environmental variation, Pisum sativum L.

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