scholarly journals Responses of Root Characteristic Parameters and Plant Dry Matter Accumulation, Distribution and Transportation to Nitrogen Levels for Spring Maize in Northeast China

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 308
Author(s):  
Yang Yu ◽  
Chunrong Qian ◽  
Wanrong Gu ◽  
Caifeng Li
Keyword(s):  
Surface Area ◽  
Nitrogen Fertilizer ◽  
Root Length ◽  
Dry Matter ◽  
Projection Area ◽  
Dry Matter Accumulation ◽  
Characteristic Parameters ◽  
High Nitrogen ◽  
Nitrogen Levels ◽  
Matter Transport

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.

scholarly journals Effect of nitrogen on growth, productivity and seed quality of long grain rice

2019 ◽  
Vol 6 (2) ◽  
pp. 279-287
Author(s):  
Md Rezaul Karim ◽  
Nazmul Islam Mazumder ◽  
Tania Sultana ◽  
Farid Ahmed ◽  
Md Shamiul Haque ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Seed Quality ◽  
Growth Parameters ◽  
Yield Component ◽  
Moderate Level ◽  
High Yield ◽  
Dry Matter Accumulation ◽  
Nitrogen Levels

Field experiment was conducted at the experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during Aman season to optimize nitrogen requirement of long grain rice (var. BUdhan 1) in respect to high yield and seed quality. Seven levels of nitrogen fertilizer viz. 0, 20, 40, 60, 80,100 and 120 kg N ha-1 constituted the treatment variables. Application of nitrogen fertilizer significantly influenced morphological event of the variety where days required for expressing phenological events increased with the increase of nitrogen levels. Growth parameters like plant height (114.37 cm), tillers per hill (15.1) and dry matter accumulation were pronounced at higher level of nitrogen. However, plants with moderate level (60 kg ha-1) of applied nitrogen showed better yield component of the variety where the highest number of panicle per hill (11.8), grains per panicle (140.5) filled grains per panicle (130.33) and bolder seed size were recorded with 60 kg N ha-1. Better yield components of the variety obtained at 60 kg N ha-1 attributed to highest yield (4.43). Considering seed quality, seeds obtained from 60 kg N ha-1showed significantly higher viability, germination and vigor indices. Therefore, it is desirable to collect seeds of BUdhan 1 with moderate level of nitrogen to ensure higher yield with better seed quality of BUdhan 1. Res. Agric., Livest. Fish.6(2): 279-287, August 2019

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

1966 ◽  
Vol 46 (1) ◽  
pp. 19-24 ◽  
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.

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

2003 ◽  
Vol 38 (11) ◽  
pp. 1257-1264 ◽  
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.

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

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.

scholarly journals Influence of priming and nitrogen on growth behavior of buckwheat (Fagopyrum esculentum) in rainfed condition of midhill in Nepal

2018 ◽  
pp. 47-54
Author(s):  
J. J. Gairhe ◽  
T. N. Bhusal ◽  
H. Neupane
Keyword(s):  
Moisture Content ◽  
Grain Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Seed Priming ◽  
Germination Percentage ◽  
Dry Matter Accumulation ◽  
Straw Yield ◽  
Nitrogen Levels ◽  
Gm Plant

 An experiment was conducted during winter, 2010/11 at IAAS, Lamjung with the objective of studying effect of seed priming and nitrogen levels on yield and yield attributing characters of buckwheat. Altogether, there were 9 treatments of seed priming hours (0, 18 and 36) combined with nitrogen levels (30, 45 and 60 kg/ha). The experiment was laid out in randomized complete block design and each treatment was replicated thrice. The seed priming of 36 hours had resulted in significantly higher germination percentage in both 15 days after sowing (DAS) (4.40%) and 30 (DAS) (5.74%) The total germination percentage was also significantly higher (48.4%) with 36 hr seed priming. The main and interaction effects of seed priming and nitrogen levels had significant influence on days to 50% flowering. The dry biomass per plant, grain yield, straw yield, harvest index and percentage moisture content of biomass at harvest were found non-significantly different due to seed priming and nitrogen levels. The highest value for dry matter accumulation per plant (5.24 gm/plant), straw yield (8706 kg/ha) and % moisture content (71.0%) was recorded with 36 hr seed priming whereas the highest value for grain yield (1599 kg/ha), and harvest index (19.8) was obtained with 18 hr seed priming. Likewise, dry matter accumulation (5.38 gm/plant), grain yield (1575 kg/ha) and harvest index (22.0) was found highest in 45 kg N/ha. Similarly, the straw yield (9153 kg/ha) and % moisture content (75.3%) was found highest in the treatment with 60 kg N/ha. The interaction effect between nitrogen level and priming was found non-significant and the highest grain yield (2091 kg/ha) was obtained from 18 hr seed priming with 45 kg N/ha. Phosphorus consumption rate was intrestingly higher in buckwheat plot with nitrogen application. Moderate consumption of potassium was also observed while nitrogen content in soil remain apparantly unchanged and similar was the case with soil pH and organic matter content. Application of phosphatic fertilizer would be benefitial for buckwheat cultivation. Further experiment should be done to verify the effective dose of fertilizer.Journal of the Institute of Agriculture and Animal Science. Vol. 33-34, 2015, Page: 47-54

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