Effects of Nitrogen Fertilizer on the Bt Protein Content in Transgenic Rice and Nitrogen Metabolism Mechanism

2021 ◽  
Author(s):  
Kai Chen ◽  
Shilong Hu ◽  
Yang Jiang
Keyword(s):  
Protein Content ◽  
Nitrogen Metabolism ◽  
Transgenic Rice ◽  
Nitrogen Fertilizer ◽  
Bt Protein

Effects of Waterlogging on Bt Protein Content and Nitrogen Metabolism in Square of Bt Cotton

2017 ◽  
Vol 43 (11) ◽  
pp. 1658 ◽  
Author(s):  
Yuan LI ◽  
Ya-Bing LI ◽  
Da-Peng HU ◽  
Jun WANG ◽  
Li HENG ◽  
...  
Keyword(s):  
Protein Content ◽  
Nitrogen Metabolism ◽  
Bt Cotton ◽  
Bt Protein

Components of test weight of ten varieties of winter wheat grown with two rates of nitrogen fertilizer application

1975 ◽  
Vol 85 (3) ◽  
pp. 559-563 ◽  
Author(s):  
Fiona M. Pushman ◽  
J. Bingham
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Ventral Surface ◽  
Fertilizer Application ◽  
Test Weight ◽  
Varietal Differences ◽  
Flour Yield ◽  
Packing Efficiency ◽  
Xylene Separation

SUMMARYVarietal and environmental factors which influence test weight were investigated in a field trial with ten varieties of winter wheat and two rates of nitrogen fertilizer. Varietal differences in test weight were correlated positively with the protein content of the grain and inversely with grain yield but they were not related to 1000-grain weight or to flour yield. Variation in test weight associated with varietal and environmental effects in protein content was due to differences in the density of the grain, as measured by displacement of xylene. Separation into density grades within a sample by a flotation method showed a similar relationship with protein content. There were also varietal differences in packing efficiency of the grain. In the case of Maris Huntsman a poor packing efficiency was considered to stem from morphological features of the floret and developing grain which lead to characteristic transverse folds in the ventral surface of the mature grain. For wheat grown in the United Kingdom, test weight may provide a useful guide to flour yield for samples of one variety but it is likely to be misleading for comparisons between varieties.

Protein Content of Rice Grain as Affected by Nitrogen Fertilizer and Some Triazines and Substituted Ureas 1

1972 ◽  
Vol 64 (6) ◽  
pp. 785-788 ◽  
Author(s):  
S. K. De Datta ◽  
W. N. Obcemea ◽  
R. K. Jana
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Rice Grain

Milk production from cows grazing on tropical grass pastures. 1. Effects of stocking rate and level of nitrogen fertilizer on the pasture and diet

1985 ◽  
Vol 25 (3) ◽  
pp. 505 ◽  
Author(s):  
TM Davison ◽  
RT Cowan ◽  
RK Shepherd ◽  
P Martin
Keyword(s):  
Protein Content ◽  
Milk Production ◽  
Nitrogen Fertilizer ◽  
Crude Protein ◽  
Dry Matter ◽  
Fertilizer Application ◽  
Stocking Rate ◽  
Crude Protein Content ◽  
Stocking Rates ◽  
Applied Nitrogen

A 3-year experiment was conducted at Kairi Research Station on the Atherton Tablelands, Queensland, to determine the effects of stocking rate and applied nitrogen fertilizer on the pasture yield and composition, diet selection by cows, and soil fertility of Gatton panic (Panicum maximum cv. Gatton) pastures. Thirty-two Friesian cows were used in a 4x2 factorial design: four stocking rates (2.0, 2.5, 3.0 and 3.5 cows/ha), each at two rates of fertilizer application 200 and 400 kg N/ha.year. The higher rate of fertilization increased the pasture green dry matter on offer at all samplings (P < 0.01); the increase ranged from 1 106 kg/ha in summer to 548 kg/ha in spring. Green dry matter decreased ( P< 0.0 1) with increasing stocking rate, with mean yields of 3736 and 2384 kg/ha at 2.0 and 3.5 cows/ha, respectively. Weed yields increased over the 3 years at the higher stocking rates for pastures receiving 200 kg N/ha.year. The crude protein content of leaf and stem increased with increasing stocking rate and amount of applied nitrogen fertilizer. Values ranged from 12.1 to 26.5% of dry matter (DM) in leaf and from 3.7 to 13.8% DM in stem. In leaf, sodium concentration (range 0.05-0.20% DM) was increased, while phosphorus concentration (range 0.21-0.44% DM) was decreased by the higher rate of fertilizer application. Plant sodium and phosphorus levels were inadequate for high levels of milk production. Dietary leaf content and crude protein contents were consistently increased by both a reduced stocking rate, and the higher rate of fertilization. Cows were able to select for leaf and at the lowest stocking rate, leaf in the diet averaged 38%; while the leaf content of the pasture was 20%. Dietary leaf content ranged from 38 to 57% in summer and from 11 to 36% in winter. Dietary crude protein ranged from 13 to 15% in summer and from 7 to 11% in winter and was positively correlated with pasture crude protein content and dietary leaf percentage. Soil pH decreased (P<0.05) from an overall mean of 6.3 in 1976 to 6.1 at 200 N and 5.8 at 400 N in 1979. Soil phosphorus status remained stable, while calcium and magnesium levels were lower (P<0.01) after 3 years.

UTILIZATION OF CATTLE MANURE CONTAINING WOOD SHAVINGS: EFFECT ON SOIL AND CROP

1987 ◽  
Vol 67 (2) ◽  
pp. 309-316 ◽  
Author(s):  
T. G. SOMMERFELDT ◽  
D. C. MACKAY
Keyword(s):  
Hordeum Vulgare ◽  
Protein Content ◽  
Key Words ◽  
Nitrogen Fertilizer ◽  
Crop Yields ◽  
C:N Ratio ◽  
N Immobilization ◽  
Hordeum Vulgare L ◽  
Total N ◽  
Wood Shavings

A 7-yr study was conducted to determine the effects of repeated annual applications of manure containing softwood shavings (M + S) at 50 t ha−1 on the soil and its productivity, relative to manure without shavings (M) at 50 t ha−1 and nitrogen fertilizer (F) at 67 kg ha−1. The EC, OM, total N and C:N ratio of the soil of the M + S and M + S + F plots to 60-cm depth were not significantly greater than those from the M plots, and in some instances they were significantly less. The NO3-N and total N and available P contents of the soil from the M + S treatment were significantly lower than those from the M treatment. Immobilization of N in the M + S and M + S + F treatments was indicated. Barley (Hordeum vulgare L. 'Gait') straw and grain yields and protein content of the grain were generally greater under the M than under the M + S treatment. When N fertilizer was included in the M + S treatment (M + S + F) the yields were similar to those of M, and the protein content increased. If manure with shavings is used for fertilizer, supplemental N should be applied to offset N immobilization. Key words: Manure disposal, manure, manure with wood shavings, nitrogen, crop yields

Effect of rates and timing of nitrogen fertilizer on the grain protein content of wheat (Triticum aestivum), grown in two contrasting seasons in South East England

1992 ◽  
Vol 118 (3) ◽  
pp. 265-269 ◽  
Author(s):  
A. A. Sajo ◽  
D. H. Scarisbrick ◽  
A. G. Clewer
Keyword(s):  
Protein Content ◽  
Spring Wheat ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Grain Protein Content ◽  
Early Summer ◽  
Grain Protein ◽  
Summer Drought ◽  
Growing Seasons ◽  
South East England

SUMMARYA field experiment was carried out at the Wye College Farm during 1988 and 1989. The aim was to study the effects of three rates and timings of nitrogen fertilizer application on the grain protein content of spring wheat cv. Axona. Results demonstrated that timing of fertilizer application was more important than the rate of nitrogen used. Grain protein development and final grain protein contents are discussed in relation to the seasonal variations experienced during the 1988 and 1989 growing seasons in South East England. Due to the early February sowing in 1989, grain protein content was not affected by the summer drought. Thus, the advantage of early sowing of spring wheat to reduce the detrimental effect of early summer drought on the grain protein content is emphasised.

scholarly journals Influence of harvest season, cutting frequency and nitrogen fertilization of mountain meadows on yield, floristic composition and protein content of herbage

2009 ◽  
Vol 38 (4) ◽  
pp. 596-604 ◽  
Author(s):  
Olívio Bochi Brum ◽  
Secundino López ◽  
Ricardo García ◽  
Sonia Andrés ◽  
Alfredo Calleja
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Nitrogen Fertilization ◽  
Management Practices ◽  
Floristic Composition ◽  
Advanced Stage ◽  
Hay Meadows ◽  
Cutting Frequency ◽  
Mountain Meadows ◽  
K Fertilization

The aim of the present study was to investigate the influence of cutting frequency, harvest season and nitrogen fertilization on yield and floristic composition of the herbage harvested from a mountain meadow. The meadow was divided into 22 plots, each receiving a different N P K fertilization treatment. The study lasted seven years, and during the first three years (1985-1987) each plot was harvested twice per year (June and September) according to a traditional harvest system, whereas in the years 1989-1991 each plot was harvested three times per year (spring, summer and autumn) following a more intensive harvest system. Nitrogen fertilizer favoured the development of the grasses in spring, thus reducing the proportion of legumes in the two cut harvest system, whereas grasses reached an advanced stage of maturity before the first cut in late June. However, the three cut harvest system entailed an earlier first cut in spring. As a result, the production of legume biomass was significantly increased both in the first cut and in the subsequent regrowths. No significant response in total herbage production to the N fertilizer was observed in the more intensive harvest system. Therefore, the three cut harvest system without nitrogen fertilization seemed to be the most suitable practice for the management of these botanically-complex mountain meadows. These results may contribute to design fertilization and management practices of mountain hay meadows to optimize their productivity and sustainability.

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