Study on the mathematical model of the effects of NPK on winter cauliflower

Li, Guangqing; Xie, Zhihua; Yao, Xueqin; Chen, Xuehao

doi:10.1016/j.mcm.2010.11.045

Cited by 5 publications

(9 citation statements)

References 19 publications

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“…Many investigators studied the effect of N, P and K either alone or in combinations with each other from recommendation doses of them or with some micronutrients especially boron on vegetative growth and productivity of some cruciferous vegetables and stated that increasing NPK fertilizer rates or doses increased plant growth, yield and quality (Cutcliffe and Munro, 1976;Csizinszky, 1996;Wenqiang et al, 2004;Dhakal et al, 2009;Li et al, 2011;Elahi, 2015;Filho et al, 2015;Sharma, 2016 andMetwaly, 2017) on cauliflower, (Islam et al, 2010;El-Helaly, 2012;Neethu et al, 2015;Singh et al, 2015;Doklega and Abd El-Hady, 2017) on broccoli. On the other hand, very few investigations have been made to study the influence of different blends of commercial inorganic NPK fertilizers resulting from combinations between NPK fertilizer ratio and rates on growth and field performance of either current or recent cauliflower cultivars.…”

Section: Introductionmentioning

confidence: 99%

Effect of some Inorganic NPK Fertilization Treatments on Cauliflower

El-Saady

Omar

2018

Journal of Plant Production

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Two successive winter field experiments were performed at 2015/2016 and 2016/2017 seasons at Vegetables Research Station, Faculty of Agric., Mansoura Univ., Egypt to study the effect of different fertilization treatments in terms of NPK fertilizer ratios and rates on growth, yield and quality of cauliflower (cv. Fargo) cultivated under silty clay loam soil conditions by furrow irrigation system. Four NPK fertilizer ratios (1.

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Section: Introductionmentioning

confidence: 99%

Effect of some Inorganic NPK Fertilization Treatments on Cauliflower

El-Saady

Omar

2018

Journal of Plant Production

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“…The experiment was conducted according to the '311-A optimization regression design of supposed saturation [11]. Each variety included 11 treatment combinations with 3 repeats, accounting for a total of 33 test plots, and there were 40 plants in each individual plot.…”

Section: Design Methodology Of Effective Function Of Balanced Fertili...mentioning

confidence: 99%

“…The Mo-Sb anti-spetrophotography method with 0.5 mol/L NaHCO 3 was used to indicate the available P content. Flame photometry was employed to determine the available K content [11,20].…”

Section: Methods Of Sampling and Soil Testingmentioning

confidence: 99%

“…2022, 12, 6147 2 of 12 are relatively important differences in the demand for N, P, K, and other fertilizers [1,8]. N, P and K are vital factors in soil testing and fertilization recommendation, significantly influencing both the yield and quality of broccoli [9][10][11]. Developing fertilization function is the basis of formula fertilization via soil testing for the production of crops and vegetables.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, there were few reports on the recommendation of N, P, and K fertilizers based on the response function of the yield of broccoli to fertilization. In our previous study, the fertilizer response functions reflecting the relationships between fertilizer rate and yield were presented for cauliflower and broccoli in field experiments using the 311-A optimization regression design [11,18,20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Establishment and Application of Models for Recommending Formula Fertilization for Different Maturing Genotypes of Broccoli

Yao

Liu

et al. 2022

Applied Sciences

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According to the requirements of different fertilizers for early-maturing and late-maturing broccoli, this study aimed to establish the models of formula fertilization to apply them in the recommendation of fertilization by the aid of soil testing performed in main broccoli-producing areas. In this paper, based on the effective functions of for nitrogen- (N), phosphorous- (P), and potassium (K)-balanced fertilizers for broccoli of two different mature types, the models of formula fertilization were established. The recommend formula fertilization was accomplished in 12 different plots in the same broccoli-producing areas. The analysis of N, P, and K fertilizer contributions to broccoli yield indicated that the application rate of N, P, and K fertilizers for early-maturing variety was higher than that for late-maturing variety, when the yield contribution rate of N, P, and K fertilizers reached the extreme value. The contribution of K fertilization to the yield even had a significantly negative effect with the continuous increase of K fertilizer application for the late-maturing broccoli variety. The results showed that the different optimal combinations of applying N, P, and K fertilizers could be recommended, according to the different genotypes and soil nutrient levels.

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Flow and heat transfer to Sisko fluid with partial slip

Khan

2016

Can. J. Phys.

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In this paper we study the partial slip effects on the flow and heat transfer of an incompressible non-Newtonian fluid over a nonlinear stretching sheet. The velocity slip boundary condition based on the Sisko constitutive fluid model is introduced. Suitable dimensionless variables are used to convert the governing partial differential equations into ordinary differential equations. Numerical solutions of these equations are obtained by the Runge–Kutta Fehlberg method. Additionally, the exact analytical solutions are presented in some special cases. The computational results for the velocity, temperature, skin-friction coefficient, and Nusselt number are presented in graphical and tabular forms. To validate the numerical results obtained, a comparison is made with the exact analytical solutions. The analysis of the results obtained shows that enhancement in the velocity slip parameter reduces the velocity as well as the momentum boundary layer thickness. However, quite the opposite is true with the temperature and corresponding thermal boundary layer thickness.

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Study on the mathematical model of the effects of NPK on winter cauliflower

Cited by 5 publications

References 19 publications

Effect of some Inorganic NPK Fertilization Treatments on Cauliflower

Effect of some Inorganic NPK Fertilization Treatments on Cauliflower

The Establishment and Application of Models for Recommending Formula Fertilization for Different Maturing Genotypes of Broccoli

Flow and heat transfer to Sisko fluid with partial slip

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