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Effect of potassium on growth, yield and quality of pineapple in tropical peat

Published online by Cambridge University Press:  15 April 2002

A. H.M. Razzaque  and
Mohamed Musa Hanafi
A. H.M. Razzaque
Affiliation:
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, P.O. Box #4, Mymensingh-2200, Bangladesh (bina@bdmail.net)
Mohamed Musa Hanafi
Affiliation:
Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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Abstract

Introduction. Two field experiments were conducted to investigate the effects ofpotassium (K) on plant growth, fruit yield and quality of pineapple cultivated on tropical peat soil.Materials and methods. Six levels of K: 0, 266, 532, 798, 1064 and 1330 kg $\cdot$ ha-1 K2Owere applied at each of two pineapple plantations located at two different sites. The experiments wereconducted with the Gandul cv. in a randomized complete block design with three replications. Results anddiscussion. The application of K had not any significant effect on plant height and leaf number ofpineapple at both sites. Potassium significantly influenced the fruit diameter at site 1, and fruit lengthand fruit weight at site 2. The application of 266 kg $\cdot$ ha-1 K2O resulted in the highest fruitweight and, at site 2, further increase of K declined it. Potassium had no significant effect on fruitsugar and acidity. However, at site 2, acid content tended to increase with increased K applications.Conclusion. Potassium applications at high rates tended to depress most of the growth and yieldattributes of cv. Gandul pineapple cultivated on peat soil in Malaysia.

Keywords

MalaysiaAnanas comosuspotassiumgrowthyieldsqualitypeatMalaisieAnanas comosuspotassiumcroissancerendementqualitétourbe
Type
Research Article
Information
Fruits , Volume 56 , Issue 1 , January 2001 , pp. 45 - 49
Copyright
© CIRAD, EDP Sciences

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