Effects of Nitrogen Fertilizer Application Time on Dry Matter Accumulation and Yield of Chinese Potato Variety KX 13

Improving nitrogen use efficiency is a significant scientific problem to be solved. Two maize hybrids JD27 (Jidan 27) and SD19 (Sidan 19) were selected to study the effects of nitrogen levels on root characteristic parameters and plant dry matter accumulation, distribution and transportation. We set five different nitrogen levels, which were nitrogen deficiency (000N), low nitrogen (075N), medium nitrogen (150N), high nitrogen (225N) and excessive nitrogen (300N). The results showed that the root length and root surface area of JD27 were significantly higher than those of SD19 under 075N. With the increase of nitrogen levels, the root difference among varieties gradually decreased. The root length, projection area, total surface area and total volume reached the maximum values at silking stage. The average root diameter kept stable or decreased slowly with the growth stage. The dry matter accumulation of JD27 was higher than that of SD19 at all growth stages. Increasing the amount of nitrogen fertilizer can promote the transport of dry matter to grain and improve dry matter transport efficiency after anthesis. Under the treatment of medium and high nitrogen fertilizer, maize was easy to obtain a higher yield, but excessive nitrogen fertilizer inhibited the increase of yield. This study provides theoretical and practical guidance for maize production techniques.

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

Australian Journal of Experimental Agriculture ◽

10.1071/ea9850505 ◽

1985 ◽

Vol 25 (3) ◽

pp. 505 ◽

Cited By ~ 6

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.

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Alternate wetting and drying irrigation and controlled-release nitrogen fertilizer in late-season rice. Effects on dry matter accumulation, yield, water and nitrogen use

Field Crops Research ◽

10.1016/j.fcr.2012.12.003 ◽

2013 ◽

Vol 144 ◽

pp. 212-224 ◽

Cited By ~ 142

Author(s):

Yushi Ye ◽

Xinqiang Liang ◽

Yingxu Chen ◽

Jin Liu ◽

Jiatao Gu ◽

...

Keyword(s):

Controlled Release ◽

Nitrogen Fertilizer ◽

Dry Matter ◽

Dry Matter Accumulation ◽

Nitrogen Use ◽

Wetting And Drying ◽

Late Season ◽

Alternate Wetting And Drying

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THE EFFECTS OF NITROGEN FERTILIZER APPLICATION RATES TO GRASS ON FORAGE YIELDS, BODY WEIGHT GAINS, FEED UTILIZATION, AND VITAMIN A STATUS OF STEERS

Canadian Journal of Animal Science ◽

10.4141/cjas66-003 ◽

1966 ◽

Vol 46 (1) ◽

pp. 19-24 ◽

Cited By ~ 5

Author(s):

C. D. T. Cameron

Keyword(s):

Body Weight ◽

Vitamin A ◽

Nitrogen Fertilizer ◽

Dry Matter ◽

Nutritive Value ◽

Fertilizer Application ◽

Beef Steers ◽

Nitrogen Levels ◽

Weight Gains ◽

Liver Vitamin

The dry matter yield of grass forage was increased linearly with nitrogen fertilizer levels of zero, 56, and 112 kg per hectare applied annually in the spring of 1961, 1962, and 1963. Nitrogen levels had little effect on the nutritive value of mature grass forage as indicated by voluntary dry matter intake and body weight gains of beef steers. The apparent digestibility of crude protein increased and that of dry matter and nitrogen-free extract decreased linearly with increasing nitrogen fertilizer rates. Digestibility of crude fiber and ether extract were not altered significantly by nitrogen levels. Forage-carotenes sustained relatively high liver vitamin A levels over a 100-day feeding period. Nitrogen levels had little effect on the rate of liver vitamin A depletion.

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Effects of plant population and nitrogen fertilizer on yield and efficiency of maize-bean intercropping

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2003001100002 ◽

2003 ◽

Vol 38 (11) ◽

pp. 1257-1264 ◽

Cited By ~ 9

Author(s):

Luiz Balbino Morgado ◽

Robert William Willey

Keyword(s):

Nitrogen Fertilizer ◽

Fertilizer Application ◽

Plant Population ◽

Bean Plant ◽

Dry Matter Accumulation ◽

Higher Plant ◽

Plant Populations ◽

Nitrogen Levels ◽

Sole Cropping ◽

Basic Parameters

Nitrogen supply and plant population are basic parameters for cereal-legume intercropping. In order to study plant population and nitrogen fertilizer effects on yield and yield efficiency of maize-bean intercropping, a field experiment was established. Three bean plant populations and three nitrogen levels were used. Maize dry matter accumulation decreased with increases in bean plant population. Competitive effect of intercrop beans on maize yields was high at higher plant populations, being decreased by nitrogen fertilizer; application of 50 kg ha-1 N was very efficient in increasing maize cob yield. Intercropping significantly decreased harvest index of beans in all plant population and nitrogen fertilizer situations. The efficiency of intercropping, compared to sole cropping, was evidenced by the values obtained for Land Equivalent Ratio (LER) for biomass, cob and pod yields that increased with increases in bean plant populations and nitrogen fertilizer levels.

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Urea as a nitrogen fertilizer for grass cut for silage

The Journal of Agricultural Science ◽

10.1017/s0021859600012211 ◽

1992 ◽

Vol 119 (3) ◽

pp. 373-381 ◽

Cited By ~ 3

Author(s):

A. Lloyd

Keyword(s):

Ammonium Nitrate ◽

Nitrogen Fertilizer ◽

Dry Matter ◽

Ammonia Volatilization ◽

Fertilizer Application ◽

Early Spring ◽

England And Wales ◽

High Ph ◽

Yield Decrease

SUMMARYForty-one experiments were carried out in England and Wales between 1983 and 1985 to compare ammonium nitrate and urea as N top dressings for multicut silage.The results showed that relative dry matter yields from the two fertilizers differed considerably between sites. However, compared with ammonium nitrate, there was a mean yield decrease with urea of 2% at the first cut and 5% at the second cut. Mean herbage N contents and apparent N recoveries were lower with urea than with ammonium nitrate at both the first and second cuts. It appeared, at least for first-cut dressings applied in early spring, that urea effectiveness increased with the amount of rain falling within 3 days of fertilizer application. The effect was much less obvious at the second cut.Urea effectiveness was not markedly reduced on soils of high pH or light texture, where higher ammonia volatilization losses might have been expected.

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Effects of Water-Nitrogen Coupling on Dry Matter and Nutrient Accumulation of Flue-Cured Tobacco

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.1620 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 1620-1623

Author(s):

Xiao Hou Shao ◽

Mao Mao Hou ◽

Jing Nan Chen ◽

You Bo Yuan ◽

Fu Zhang Ding

Keyword(s):

Nitrogen Fertilizer ◽

Dry Matter ◽

Tobacco Plant ◽

Dry Weight ◽

Nutrient Content ◽

Dry Matter Accumulation ◽

Nutrient Accumulation ◽

Irrigation Amount ◽

Nitrogen Coupling ◽

Weight Proportion

In order to explore the effects of water-nitrogen coupling on dry matter and nutrient accumulation of flue-cured tobacco, 9 treatments with different lowest limits and nitrogen fertilizer amount were designed, and the distribution and accumulation of dry matter and nutrient (N, P and K) of flue-cured tobaccos under water-nitrogen coupling treatments were observed. Results showed that: (1) High irrigation amount could not certainly increase the dry matter accumulation of tobacco root, but which was beneficial to the dry matter accumulation of whole tobacco plant. (2) Dry weight proportion of flue-cured tobacco leaves was highest, which was above 55% among the treatments. (3) Higher water and nitrogen promoted the nutrient accumulation of flue-cured tobaccos, nutrient content of W3N3, W3N2 and W2N2 was higher compared to other treatments.

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Effect of the Applied Fertilization Method under Full Straw Return on the Growth of Mechanically Transplanted Rice

Plants ◽

10.3390/plants9030399 ◽

2020 ◽

Vol 9 (3) ◽

pp. 399

Author(s):

Jichao Tang ◽

Ruoyu Zhang ◽

Hechao Li ◽

Jun Zhang ◽

Shaoqiang Chen ◽

...

Keyword(s):

Dry Matter ◽

Ammonium Carbonate ◽

Fertilizer Application ◽

Dry Matter Accumulation ◽

Straw Decomposition ◽

Nitrogen Use ◽

Compound Fertilizer ◽

Straw Return ◽

Use Efficiency ◽

Application Methods

This study aimed to improve nitrogen utilization and alleviate the inhibition of straw decomposition during early tillering and the growth of paddy after straw return. Specifically, three different nitrogen fertilizer (base fertilizer) application methods were tested under full straw return: applying the compound fertilizer once (J1), applying the compound fertilizer twice (J3) and applying the ammonium carbonate fertilizer plus compound fertilizer (J2). Full straw return without fertilizer (CK1) and no straw return without fertilizer (CK2) were used as the controls. The results showed that treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) significantly enhanced straw decomposition, light interception and dry matter accumulation at an early stage of tillering, but reduced tiller occurrence at a late tillering stage. Grain yield was affected due to reduced dry matter accumulation, nitrogen use efficiency and number of effective panicles. There were no significant differences in rice growth, nitrogen use efficiency and grain yield between the one-time or two-time compound fertilizer application methods. In contrast, treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) under full straw return effectively improved straw decomposition and accelerated the return of green and tillering. In addition, the proportion of ammonium carbonate fertilizer affected the nutrient utilization efficiency and yield at later stages.

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Effects of straw incorporation on the yield, nitrogen fertilizer and insecticide requirements of sugarbeet (Beta vulgaris)

The Journal of Agricultural Science ◽

10.1017/s0021859600068799 ◽

1992 ◽

Vol 118 (2) ◽

pp. 199-206 ◽

Cited By ~ 7

Author(s):

M. F. Allison ◽

K. W. Jaggard ◽

P. J. Last

Keyword(s):

Nitrogen Uptake ◽

Nitrogen Fertilizer ◽

Dry Matter ◽

Fertilizer Application ◽

Sugar Yield ◽

Population Densities ◽

Pests And Diseases ◽

Soil Pests ◽

Straw Incorporation ◽

One Year

SUMMARYIncorporation of large amounts of straw (8–15 t/ha dry matter) into the soil had no effect on the incidence of soil pests and diseases or sugarbeet seedling population densities in experiments performed over three seasons (1984/85 to 1986/87) in Suffolk. Straw incorporation had no effect on sugar yield at the recommended rate of nitrogen fertilizer application, but the sugar yield and nitrogen uptake were reduced in one year by the incorporation of straw when the rate of applied nitrogen was low. It is probable that incorporating straw reduced the amount of nitrogen leached over the winter; however, the longer-term implications of straw incorporation remain to be assessed.

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