TITLE

Effect of Nitrogen Fertilizer and Soil Conditioner on the Productivity of Potato Plants Grown under Sandy Soil Conditions

AUTHOR(S)
Shaheen, A.M.; Rizk, Fatma A.; Abd El-Samad, E.H.; El-Ashry, Soad M.
PUB. DATE
March 2013
SOURCE
Journal of Applied Sciences Research;Mar2013, Vol. 9 Issue 3, p1774
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The response of potato plants cv. Cara grown under newly sandy soil conditions, subjected to two levels of urea fertilizer (46% N) as a nitrogen source, 150 and 300 kg urea/fed. and four levels of bentonite as a soil conditioner 0, 100, 200 and 300 kg/fed. was studied during seasons of 2010/2011 and 2011/2012. Field experiments were conducted in a private farm at Sadaat city, Monofeya governorate, Egypt in a split plot design with 3 replicates and combined analysis of both seasons data were performed. Vegetative growth, tuber yield and chemical tuber quality characteristics of potato plants were determined. The obtained results sharply concluded that using the higher rate of urea (300 kg/fed.) significantly increased all measured characteristics of vegetative growth, tuber yield and chemical tubers quality of potato plants compared to the lower rate. Except for number of leaves/plant, dry weight of whole plant, phosphorous and potassium percentages. Although no significant difference was recorded, the highest value of potassium percentage was recorded with the lower level of urea application 150 kg/fed. Application of bentonite as soil conditioner for sandy soil had a positive significant effect on all measured characteristics of vegetative growth, tuber yield and chemical tuber quality of potato plants, except for protein, nitrate and N contents. Increasing bentonite application rate from 0 to 300 kg/fed. a gradual significant increase occurred. But there no significant differences were realized between the rates of 200 and 300 kg bentonite/fed. Concerning the interaction effect between two nitrogen rates and four bentonite levels, significant differences were detected only on number of tubers per square meter and weight of tubers per plant. While for the rest of tuber yield characteristics as well as vegetative growth and chemical tuber quality characteristics of potato plants the interaction had no significant effect. Application of urea as nitrogen fertilizer source at rate of 300 kg/fed. and bentonite mineral as soil conditioner at rate of 200 or 300 kg/fed. gave the best values of all measured vegetative growth, tuber yield and chemical tuber quality characteristics of potato plants grown under newly sandy soil conditions.
ACCESSION #
88858163

 

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