scholarly journals Establishment and Application of Critical Nitrogen Dilution Curve for Rice Based on Leaf Dry Matter

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 367
Author(s):  
Lijuan Song ◽  
Shu Wang ◽  
Wanjun Ye
Keyword(s):  
Dry Matter ◽  
Nitrogen Nutrition ◽  
Nitrogen Concentration ◽  
Rice Cultivar ◽  
Dilution Curve ◽  
Negative Power ◽  
Rice Leaf ◽  
Nitrogen Dilution ◽  
Rice Leaves ◽  
Critical Nitrogen Concentration

In order to investigate the feasibility of using rice leaf critical nitrogen concentration as a nitrogen nutrition diagnosis index, a three-year positioning experiment with large-spike rice cultivar (Wuyoudao4) and multiple-spike rice cultivar (Songjing9) under five nitrogen levels (0, 60, 120, 180, and 240 kg·ha−1) was conducted. A critical nitrogen dilution curve and a nitrogen nutrition index (NNI) of rice leaf dry matter were constructed for Wuyoudao4 (Nc = 1.96LDM−0.56, R2 = 0.87, NNI was between 0.6–1.26, and Normalized Root Mean Square Error (n-RMSE) = 13.07%) and Songjing9 (Nc = 1.99LDM−0.44, R2 = 0.94, NNI was between 0.64–1.29, and n-RMSE = 15.89%). The relationship between dry matter and nitrogen concentration of rice leaves was a negative power function, and the model had good stability over the three years. The developed critical nitrogen concentration dilution curve, based on leaf dry matter, was able to diagnose nitrogen nutrition in rice efficiently. The model established in this study could be used to directly regulate and control the nitrogen nutrition of rice leaves.

scholarly journals Simulation of the critical nitrogen dilution curve in Jiangxi double-cropped rice region based on leaf dry matter weight

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259204
Author(s):  
Chun Ye ◽  
Ying Liu ◽  
Jizhong Liu ◽  
Yanda Li ◽  
Binfeng Sun ◽  
...  
Keyword(s):  
Dry Matter ◽  
Nitrogen Nutrition ◽  
Nitrogen Concentration ◽  
Relative Yield ◽  
Rice Varieties ◽  
Nitrogen Dilution ◽  
Critical Nitrogen Concentration ◽  
Late Rice ◽  
Early Rice ◽  
Dilution Curves

In order to investigate the feasibility of using rice critical nitrogen concentration as a nitrogen nutrition diagnosis index, a two-year positioning field gradient experiment using four rice varieties and four nitrogen levels (0, 75, 150, 225 kg·ha–1 for early rice; 0, 90, 180, 270 kg·ha–1 for late rice) was conducted for early and late rice. The critical dilution curves (Nc%) of the double-cropped rice based on leaf dry matter (LDM) were constructed and verified using the field data. Two critical nitrogen dilution curves and nitrogen nutrition indexes (NNI) of rice LDM were constructed for early rice [Nc% = 2.66LDM−0.79, R2 = 0.88, NNI ranged between 0.29–1.74, and the average normalized root mean square error (n-RMSE = 19.35%)] and late rice [Nc% = 7.46LDM−1.42, R2 = 0.91, NNI was between 0.55–1.53, and the average (n-RMSE = 15.14%)]. The relationship between NNI and relative yield was a quadratic polynomial equation and suggested that the optimum nitrogen application rate for early rice was sightly smaller than 150 kg·ha–1, and that for late rice was about 180 kg·ha-1. The developed critical nitrogen concentration dilution curves, based on leaf dry matter, were able to diagnose nitrogen nutrition in the double-cropped rice region.

Determination of critical nitrogen concentration and dilution curve based on leaf area index for summer maize

2018 ◽  
Vol 228 ◽  
pp. 195-203 ◽  
Author(s):  
Ben Zhao ◽  
Syed Tahir Ata-Ul-Karim ◽  
Aiwang Duan ◽  
Zhandong Liu ◽  
Xiaolong Wang ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Nitrogen Concentration ◽  
Dilution Curve ◽  
Summer Maize ◽  
Area Index ◽  
Critical Nitrogen Concentration

scholarly journals Determination of Critical Nitrogen Dilution Curve Based on Stem Dry Matter in Rice

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e104540 ◽  
Author(s):  
Syed Tahir Ata-Ul-Karim ◽  
Xia Yao ◽  
Xiaojun Liu ◽  
Weixing Cao ◽  
Yan Zhu
Keyword(s):  
Dry Matter ◽  
Dilution Curve ◽  
Nitrogen Dilution

scholarly journals Critical nitrogen dilution curves and productivity assessments for plant cane

2020 ◽  
Vol 24 (4) ◽  
pp. 244-251
Author(s):  
Augusto C. de A. Santana ◽  
Emídio C. A. de Oliveira ◽  
Vinícius S. G. da Silva ◽  
Renato L. dos Santos ◽  
Magda A. da Silva ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Nitrogen Concentration ◽  
Dry Mass ◽  
Exponential Model ◽  
Critical Levels ◽  
Sugarcane Varieties ◽  
Nitrogen Dilution ◽  
Limiting Nutrient ◽  
Critical Nitrogen Concentration ◽  
Stalk Yield

ABSTRACT Nitrogen is the most limiting nutrient for the development of sugarcane and particularly the use of more productive and demanding varieties, for which the doses of nitrogen fertilization necessary during the plant cane cycle may be underestimated and the critical levels of nitrogen in the leaf may be modified. The objective of this study was to determine the critical nitrogen dilution curve (CNDC) for leaves, evaluate the aboveground dry mass production (DM) and productivity of two varieties fertilized with N in the plant cane cycle. The study was conducted under field conditions, evaluating two sugarcane varieties RB92579 and RB867515, fertilized with seven doses of N (0, 30, 60, 90, 120, 150 and 200 kg ha-1). The varieties and doses were arranged in randomized blocks and analyzed in the 2 × 7 factorial scheme. It was found that the nitrogen concentration in the leaf decreased with four repetitions increase in DM yield and adjusted an exponential model, which enabled to estimate the critical levels of 13.03 and 12.46 g N kg-1 dry matter in the varieties RB92579 and RB867515, respectively. The plant cane cycle were observed to respond positively to nitrogen fertilization, with increase of 18.66% in tons of stalk per hectare (TSH) in response to the application addition of up to 129.45 kg N ha-1. The variety RB92579 showed the lowest dilution of the critical nitrogen concentration, the highest production of DM and higher stalk yield, and accordingly is considered to be the more efficient of the two varieties with respect to nitrogen fertilizer utilization.

scholarly journals Leek hybrid yield potentional and relation on adaptation to light interception under nitrogen supply

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 549-559
Author(s):  
Dubravka Savic
Keyword(s):  
Nitrogen Uptake ◽  
Dry Matter ◽  
Nitrogen Nutrition ◽  
Nitrogen Concentration ◽  
Crop Productivity ◽  
Light Interception ◽  
Nitrogen Supply ◽  
Allium Porrum ◽  
Total Nitrogen Concentration ◽  
Nitrogen Demand

We have studied the effect of nitrogen supply on growth as well as relation on adaptation to light interception of leek (Allium porrum L.,) hybrid Alita, genotype of known genetic background. During the vegetative and generative plant growth phases, besides genetic potential many factors affect their productivity. The aim was to investigate genome expression dependent on nitrogen nutrition and light interception. Nitrogen in correlation with light availability has important effect on the growth of plants and the formation of leaf area, what it is necessary for yield of dry matter. Investigation has been done in open field grown leek commercial hybrid Alita (Allium porrum L.,) to consider the way of its genotype response to correlation of light interception and nitrogen nutrition. Investigated traits are leek crop productivity, light interception and chemical analyses of plants. Leek crop productivity was determined through the dry matter production, leaf area development and light interception. Analyses of leek plants comprehended chemical determination and calculation of total nitrogen concentration, nitrogen critical concentration in dry matter, nitrogen demand and, nitrogen uptake in leek crop. Correlation among investigated parameters was assigned to comprehensive hypothetical model of growth and productivity of leek crop grown at open field.It was shown that for nitrogen uptake (Nu), nitrogen demand (ND) and total nitrogen concentration (Nt) parameters variants of mineral nutrition plays significant role (pNu=0.002; pND=0.045; pNt=0.011). Obtained results indicated that correlation of nitrogen and light interception could be used as criteria in plant breeding.

scholarly journals Nitrogen concentration in dry matter of the fifth leaf during growth of greenhouse tomato plants

2002 ◽  
Vol 20 (4) ◽  
pp. 626-629 ◽  
Author(s):  
Jorge E. Rattin ◽  
Jerônimo L. Andriolo ◽  
Márcio Witter
Keyword(s):  
Nutrient Solution ◽  
Dry Matter ◽  
Plant Density ◽  
Nitrogen Nutrition ◽  
Nitrogen Concentration ◽  
Dry Matter Accumulation ◽  
Iron Chelate ◽  
Greenhouse Tomato ◽  
N Concentration ◽  
Commercial Mixture

The nitrogen concentration in dry matter of the fifth leaf during growth of a greenhouse tomato crop was determined. Plants of hybrid Monte Carlo were grown in 4.5 L bags, using a commercial substrate, in a plant density of 3.3 plants m-2. A nutrient solution containing, in mmol L-1: KNO3, 4.0; K2SO4, 0.9; Ca(NO3)2, 3.75; KH2PO4, 1.5; MgSO4, 1.0; iron chelate 19. 10³, was used as reference. Microelements were added by a commercial mixture. The T3 treatment was equal to the reference nutrient solution, whereas in treatments T1, T2, T4 and T5 quantities of all nutrients from T3 were multiplied by 0.25, 0.50, 1.25 and 1.50, respectively. In each treatment, the volume of 1 L of nutrient solution was supplied to each plant once a week by fertigation. Periodically destructive measurements were made from anthesis to ripening of the first truss, to determine dry matter and N concentration in shoot and in fifth leaf tissues, counted from the apex to the bottom of the plant. Five dilution curves were fitted from data of N concentration in the fifth leaf and shoot dry matter accumulation during growth of plants. A general relationship was adjusted between actual N concentration in shoot (Nt) and in the fifth leaf (Nf): Nt = 1.287 Nf (R² = 0.80). This relationship could be used to estimate the N status of plants by means of a nitrogen nutrition index (NNI), from analysis of the fifth leaf sap.

Using leaf dry matter to quantify the critical nitrogen dilution curve for winter wheat cultivated in eastern China

2014 ◽  
Vol 159 ◽  
pp. 33-42 ◽  
Author(s):  
Xia Yao ◽  
Ben Zhao ◽  
Yong Chao Tian ◽  
Xiao Jun Liu ◽  
Jun Ni ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Dry Matter ◽  
Eastern China ◽  
Dilution Curve ◽  
Nitrogen Dilution

scholarly journals Construction of critical nitrogen dilution curve based on dry matter in diffe rent organs of summer maize and estimation of grain yield

2020 ◽  
Vol 47 (3) ◽  
pp. 530-545
Author(s):  
Wen-Nan SU ◽  
Jun XIE ◽  
Juan HAN ◽  
Tie-Ning LIU ◽  
Qing-Fang HAN
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Dilution Curve ◽  
Summer Maize ◽  
Nitrogen Dilution

scholarly journals Critical nitrogen dilution curve and nitrogen nutrition diagnosis of maize with drip irrigation

2019 ◽  
Vol 46 (2) ◽  
pp. 290-299
Author(s):  
Hui-Fang LIU ◽  
Jiang-Peng FU ◽  
Zhen-Zhou LI ◽  
Zheng HE ◽  
Zhi LIU ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Nitrogen Nutrition ◽  
Dilution Curve ◽  
Nitrogen Dilution ◽  
Nutrition Diagnosis

Effect of temporary flooding on cotton growth and nitrogen nutrition in soils with different organic matter levels

1987 ◽  
Vol 38 (1) ◽  
pp. 91 ◽  
Author(s):  
AW Soomro ◽  
SA Waring
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Nitrogen Nutrition ◽  
Nitrogen Concentration ◽  
Organic Matter Content ◽  
Matter Content ◽  
Growth Characteristics ◽  
Urea Nitrogen ◽  
High Organic Matter ◽  
Water Treatments

A glasshouse experiment was conducted to study the effect of temporary flooding on the growth and development of cotton (Gossypium hirsutum L. cv. Deltapine 61) and the recovery of nitrogen applied as urea fertiliser in two black earths differing in organic matter content, with three water treatments. Two floodings were applied, at 15 days after planting and at 45 days.Plant dry weight and growth characteristics of the cotton plant such as height, number of leaves, leaf area and fruiting points were greatly reduced by the flooding treatments. The cotton plants were more affected by the first than the second flooding. A greater depression in the various growth characteristics was found in the high organic matter soil than the low organic matter soil. The soils behaved differently in their interaction with the water treatments. With the control water treatment, cotton grown on the high organic matter soil produced more dry matter and assimilated more nitrogen but had a lower nitrogen concentration and apparent recovery of urea nitrogen than did cotton grown on the low organic matter soil. For the flooding treatments the low organic matter soil produced more dry matter and assimilated more nitrogen, but had a lower nitrogen concentration and a higher apparent recovery of urea nitrogen than did cotton grown on the high organic matter soil.The lower apparent recovery of urea nitrogen in the high organic matter soil during temporary flooding appears due mainly to higher loss of nitrogen by denitrification, although other mechanisms may be significant. The wider implications of the results in terms of field practice with irrigated cotton are discussed.

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