Influence of soil applications of nitrogen on nitrate reductase activity, leaf and grain protein content in sorghum

Ajakaiye, Christianah O.

doi:10.1007/bf02149638

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…Nitrogen (N) is an important component of many structural, genetic and metabolic compounds in plant cells. Nitrate (NO 3 ) ) is an abundant source of N in most soils and is readily assimilated by higher plants (Ajakaiye, 1981). Moreover, most of the crops grow well following a combined application of ammonia (NH 4 ) and NO 3 ) (Frechilla et al, 1999).…”

Section: Introductionmentioning

confidence: 98%

Toxic Effect of Cadmium on Rice as Affected by Nitrogen Fertilizer Form

et al. 2005

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A nutrient solution experiment was conducted to determine the influence of N forms on growth, oxidative stress, and Cd and N uptake in rice plants. The treatments were consisted of two Cd levels (0 and 1 lmol) and three N forms (NH 4 ) 2 SO 4 , NH 4 NO 3 and Ca(NO 3 ) 2 . The results indicated that without Cd addition in the culture solution, the N forms had no significant effect on all measured parameters, including plant growth, photosynthetic traits, malondialdehyde (MDA) concentration, superoxide dismutase (SOD) activity, and Cd and N concentration, while Cd addition in the medium resulted in significant differences in measured parameters among the three forms of N fertilizers. The least inhibition of growth was noted in (NH 4 ) 2 SO 4 -fed plants, and the largest in Ca(NO 3 ) 2 -fed plants, when plants were exposed to Cd stress. The highest photosynthetic rate and chlorophyll content was also recorded in (NH 4 ) 2 SO 4 -fed plants. Addition of Cd caused a remarkable increase in SOD activity and MDA content in plants, and the extent of increase varied with N form, with (NH 4 ) 2 SO 4 -fed plants being smallest. In comparison with the control plants, the N concentration in roots and shoots was not significantly affected in (NH 4 ) 2 SO 4 -fed plants, but significant decrease in root N concentration was found for the NH 4 NO 3 and Ca(NO 3 ) 2 -fed plants under Cd stress. Moreover, the significant differences were also noted among the three N forms in both root and shoot Cd concentrations, with (NH 4 ) 2 SO 4 -fed plants being the lowest. The results indicated that the toxic effect of Cd on rice varied with the form of N fertilizer.

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Section: Introductionmentioning

confidence: 98%

Toxic Effect of Cadmium on Rice as Affected by Nitrogen Fertilizer Form

et al. 2005

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Effects of soil applied herbicides on leaf nitrate reductase and crude protein in the leaf and seed of two cowpea cultivars

Omokaro

Ajakaiye

1989

Plant Soil

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Effect of P and Fe applications to cowpea in three soil types

Ajakaiya

1986

Plant Soil

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Summary Cowpea, (Vigna unguiculata L.) was grown using 3 soil types (designated Black, Red and Calcareous) at 4 rates of P (0, 40, 80 and 160kg/ha) and 4 rates of Fe (0, 2, 4,and 8 kg/ha). Sampling was done fortnightly (starting at 4 weeks after planting) for measurements of leaf area, plant height, leaf dry weight and leaf concentrations of P and Fe.Cowpea plants on Po treatment were stunted, irrespective of soil type. The P requirement for good growth on the Black soil was only a quarter that on the other two soils.Different P-Fe ratios (24:1, 17:1 and 12 ;1) were required for best cowpea growth on the Black, Red and Calcareous soils respectively.Significant (P = 0.05) increases in growth were obtained with the addition of P while addition of Fe did not lead to any such significant increases in growth on any of the 3 soils.Highest leaf P was obtained in plants grown on the Black soil while the lowest was in plants on the Calcareous soil.

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Influence of soil applications of nitrogen on nitrate reductase activity, leaf and grain protein content in sorghum

Cited by 6 publications

References 14 publications

Toxic Effect of Cadmium on Rice as Affected by Nitrogen Fertilizer Form

Toxic Effect of Cadmium on Rice as Affected by Nitrogen Fertilizer Form

Effects of soil applied herbicides on leaf nitrate reductase and crude protein in the leaf and seed of two cowpea cultivars

Effect of P and Fe applications to cowpea in three soil types

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