Hussein, A. (2002). MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE. Journal of Soil Sciences and Agricultural Engineering, 27(7), 5073-5084. doi: 10.21608/jssae.2002.255197
A. H. A. Hussein. "MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE". Journal of Soil Sciences and Agricultural Engineering, 27, 7, 2002, 5073-5084. doi: 10.21608/jssae.2002.255197
Hussein, A. (2002). 'MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE', Journal of Soil Sciences and Agricultural Engineering, 27(7), pp. 5073-5084. doi: 10.21608/jssae.2002.255197
Hussein, A. MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE. Journal of Soil Sciences and Agricultural Engineering, 2002; 27(7): 5073-5084. doi: 10.21608/jssae.2002.255197
MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE
Faculty of Agriculture (Saba Bacha) - Alexandria University· EGYPT
Abstract
The present study was carried out at field scale to predicte the relative uptake
of some nutrient elements as a function of relative growth rate{RGR). The test crop was Broad bean (Vicia faba, L.) variety Giza 461. The obtained results Indicate that the dry matter production can be expressed as a Guissian model. The constants of the model represent the maximum dry matter production and the plant age at maximum dry matter production{R2 = 0.996··). The nutrients uptake (U) was regressed against the dry matter production (OM) .The three-order polynomial equation was found to be the best filling equation. The relationship between relative growth rate (RGR) and relative accumulation rate(RAR) was filled for each nutrient as a linear regression model. The model discussed here provides a means for prediding uptake rate if growth rate are known or can be predicted. Further studies must be done to explain the factors that have a significant effect on the slope of RGR-RAR relationship such as plant age. environmental factors, the response of different plant parts to nutrient uptake and the nutrient availability and mobility in soil system as related to soil properHes. MODELING NUTRIENTS UPTAKE AS A FUNCTION OF PLANT GROWTH RATE Hussein, A. H. A. Faculty of Agriculture (Saba Bacha) - Alexandria University· EGYPT ABSTRACT
The present study was carried out at field scale to predicte the relative uptake of some nutrient elements as a function of relative growth rate{RGR). The test crop was Broad bean (Vicia faba, L.) variety Giza 461. The obtained results Indicate that the dry matter production can be expressed as a Guissian model. The constants of the model represent the maximum dry matter production and the plant age at maximum dry matter production{R2 = 0.996··). The nutrients uptake (U) was regressed against the dry matter production (OM) .The three-order polynomial equation was found to be the best filling equation. The relationship between relative growth rate (RGR) and relative accumulation rate(RAR) was filled for each nutrient as a linear regression model. The model discussed here provides a means for prediding uptake rate if growth rate are known or can be predicted. Further studies must be done to explain the factors that have a significant effect on the slope of RGR-RAR relationship such as plant age. environmental factors, the response of different plant parts to nutrient uptake and the nutrient availability and mobility in soil system as related to soil properHes.
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