EFFECTS OF DIFFERENT AMOUNTS OF POTASSIUM ON GROWTH AND ASH CONSTITUENTS OF <i>ANANAS COMOSUS</i> (L.) MERR

Sideris, C. P.; Young, H. Y.

doi:10.1104/pp.20.4.609

Cited by 17 publications

(18 citation statements)

References 30 publications

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“…The factors associated with nitrate absorption, translocation and assimilation were discussed in previous publications (9,12,13,15,16). Recent studies by other investigators (2,5,6,17,19) also summarized, in a recent review of McKEE (4) and also by STREET (18), are in agreement with the views expressed on nitrate assimilation in earlier findings (8).…”

Section: Discussionsupporting

confidence: 79%

GROWTH OF ANANAS COMOSUS (L.) MERR. AT DIFFERENT LEVELS OF MINERAL NUTRITION UNDER GREENHOUSE AND FIELD CONDITIONS. I. PLANT AND FRUIT WEIGHTS AND ABSORPTION OF NITRATE AND POTASSIUM AT DIFFERENT GROWTH INTERVALS

Sideris¹,

Young²

1950

Plant Physiol.

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Section: Discussionsupporting

confidence: 79%

GROWTH OF ANANAS COMOSUS (L.) MERR. AT DIFFERENT LEVELS OF MINERAL NUTRITION UNDER GREENHOUSE AND FIELD CONDITIONS. I. PLANT AND FRUIT WEIGHTS AND ABSORPTION OF NITRATE AND POTASSIUM AT DIFFERENT GROWTH INTERVALS

Sideris¹,

Young²

1950

Plant Physiol.

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“…In fact, potassium applications seemed to have depressed the fruit length at both sites. Other works [7][8][9] reported that high dressing of K had antagonistic effect on the uptake of Mg and NH 4 -N. Thus, the highest K application levels might have resulted in a depressing effect on fruit length through its inhibitory effect on the plant normal growth and development.…”

Section: Fruit Yield Characteristicsmentioning

confidence: 99%

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

Razzaque

Hanafi

2001

Fruits

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Effect of potassium on growth, yield and quality of pineapple in tropical peat.Abstract -Introduction. Two field experiments were conducted to investigate the effects of potassium (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 . ha -1 K 2 O were applied at each of two pineapple plantations located at two different sites. The experiments were conducted with the Gandul cv. in a randomized complete block design with three replications. Results and discussion. The application of K had not any significant effect on plant height and leaf number of pineapple at both sites. Potassium significantly influenced the fruit diameter at site 1, and fruit length and fruit weight at site 2. The application of 266 kg . ha -1 K 2 O resulted in the highest fruit weight and, at site 2, further increase of K declined it. Potassium had no significant effect on fruit sugar 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 yield attributes of cv. Gandul pineapple cultivated on peat soil in Malaysia.Malaysia / Ananas comosus / potassium / growth / yields / quality / peat Effet du potassium sur la croissance, le rendement et la qualité de l'ananas cultivé sur de la tourbe en zone tropicale.Résumé -Introduction. Une expérimentation a été conduite en champ pour étudier les effets du potassium (k) sur la croissance de plantes, ainsi que sur le rendement et la qualité du fruit de l'ananas cultivé sur de la tourbe en zone tropicale. Matériel et méthodes. Six doses de K (0, 266, 532, 798, 1064 et 1330 kg . ha -1 K 2 O) ont été appliquées à chacune de deux plantations de cv. Gandul localisées sur deux sites différents. Les dispositifs expérimen-taux ont été ceux de blocs en randomisation complète avec trois répétitions. Résultats et discussion. Quel que soit le site, l'application de K n'a eu aucun effet significatif sur la hauteur de la plante et son nombre de feuilles. Le potassium a influencé de manière significative le diamètre de fruit au site 1 et la longueur du fruit et son poids au site 2. L'application de 266 kg . ha -1 K 2 O a permis d'obtenir le poids de fruit le plus élevé et, au site 2, des doses supé-rieures de K l'ont diminué. Le potassium n'a eu aucun effet significatif sur le sucre et l'acidité du fruit. Cependant, au site 2, la teneur en acide a eu tendance à augmenter avec des applications accrues de K. Conclusion. Les applications de potassium à fortes doses ont tendu à diminuer la plupart des caractéristiques de croissance et de rendement des ananas Gandul cultivés sur sol tourbeux en Malaisie.Malaisie / Ananas comosus / potassium / croissance / rendement / qualité / tourbe Effect of potassium on pineapple 45

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“…Former studies (30,31,32) have indicated that the leaves of A. cokfnosts grown in substrata containingc ammoniiumii were greener, broader and miiore succulent by comparison with those grown in nitrate. Also, the tisslues of the former contained no nitrate but greater amounlts of soluble organiic-'N thani the latter.…”

Section: Introductionmentioning

confidence: 99%