Studies of Physico-chemical Changes Due to Fruit Thinning in Guava (Psidium guajava L.)

., F.M. Tahir; Hamid, Kamran

doi:10.3923/jbs.2002.744.745

J. of Biological Sciences

2002

DOI: 10.3923/jbs.2002.744.745

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Studies of Physico-chemical Changes Due to Fruit Thinning in Guava (Psidium guajava L.)

F.M. Tahir .¹,

Kamran Hamid²

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Cited by 5 publications

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Effect of number and criteria of young fruitsin locoon yield of mango

Silva

Suparto

2012

Fruits

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Effect of number and criteria of young fruits in loco on yield of mango. Abstract-Introduction. The aim of our research was to optimize the number of young mango (Mangifera indica L. cv. 'Arumanis') fruits that could be maintained per panicle and to improve the criteria for the selection of fruit to be maintained in loco to allow a high yield to be achieved. Materials and methods. The factors investigated were the number of young fruits maintained per panicle (either 2, 4 or 6), while the criteria of young fruits to be maintained were: the number of biggest fruit, fruits attached at the base of the panicle, and fruits distributed evenly from the base to the top of the panicle. Results. Our study shows that maintaining six young fruits per panicle gave the highest weight of harvested mango fruits per plant (33 kg) and the lowest weight per fruit (466 g). Maintaining the biggest mango fruit on the panicle resulted in the highest weight per fruit (496 g). Conclusion. Increasing the number of young fruits maintained per panicle from 2 to 6 linearly increased the weight of fruits per plant, although it decreased the weight per fruit linearly. Indonesia / Mangifera indica / cultivation / thinning / defruiting / yields / weight / fruits Effet, sur le rendement du manguier, du nombre et des caractéristiques des jeunes fruits laissés sur l'arbre. Résumé-Introduction. Le but de notre étude a été d'optimiser le nombre de jeunes mangues (Mangifera indica L. cv. 'Arumanis') qui pourraient être maintenues sur panicule et d'améliorer les critères de sélection des fruits laissés en place afin d'atteindre de hauts rendements. Matériel et méthodes. Les facteurs étudiés ont été le nombre de jeunes fruits conservés par panicule (2, 4, ou 6) et les caractéristiques des jeunes fruits maintenus : nombre de gros fruits, position basale des fruits sur la panicule et distribution uniforme des fruits de la base vers le sommet de la panicule. Résultats. Notre étude a montré que le maintien de six jeunes fruits par panicule a conduit au poids de mangues récoltées par plant le plus élevé (33 kg) et au fruit le moins lourd (466 g). Le maintien des plus grosses mangues sur panicule a permis d'obtenir les fruits les plus lourds (496 g). Conclusion. Le maintien de deux à six jeunes fruits sur la panicule a linéairement augmenté le poids de mangues par plant mais il a diminué de façon linéaire le poids individuel du fruit.

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Effect of number and criteria of young fruitsin locoon yield of mango

Silva

Suparto

2012

Fruits

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Studies on crop load, fruit thinning and their effects on growth attributes of guava (Psidium guajava L.) cv. ALLAHABAD SAFEDA under meadow planting system

Patil¹,

Kumar²,

Bhagwan³

et al. 2017

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(Hasta bahar crop) to find out the effect of fruit thinning on growth attributes of guava (Psidium guajava L.) cv. ALLAHABAD SAFEDA under meadow planting system. The treatments of the experiment were crop load levels i.e. retaining of 5, 10, 15, 20 fruits per plant and control (No thinning) and second factor as a observations recorded after fruit thinning i.e. (i) 30 days after fruit set (ii) 60 days after fruit set (iii) 90 days after fruit set and at the time of harvest. The ages of the plants were 4-5 years. Results revealed that the significant differences were noticed in guava cv. ALLAHABAD SAFEDA for different vegetative and fruit growth parameters studied in hasta bahar crop. There is an increasing trend during growth and development in shoot length, leaf area index, and fruit growth parameters like fruit length, fruit diameter and average fruit weight. At the time of harvest recorded maximum shoot length (47.88 cm), leaf area index (1.09), fruit length (6.34 cm), fruit diameter (6.92cm) and average fruit weight (175.40 g). The interaction between days after fruit set and fruit load has shown significant results that, at the time of harvest with15 fruits per plant recorded best result in shoot length (52.06 cm) and in fruit growth parameters, maximum fruit length (7.34 cm), fruit diameter (4.46 cm) and fruit weight (236.46 g) was recorded in 5 fruits per plant at the time of harvest.

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Effect of Pruning Intensities on the Performance of Fruit Plants under Mid-Hill Condition of Eastern Himalayas: Case Study on Guava

Bhagawati

Choudhary

et al. 2015

ILNS

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ABSTRACT. Current study was undertaken to highlight the effect of pruning on improving vigor of old orchards and increasing performance in terms of fruit yield and quality under water and nutrient stressed condition of mid hills of Eastern Himalaya. Guava was taken for the case study and all the physical and chemical properties of the fruits and other attributes of plant were evaluated using standard methods under three pruning intensities (light, moderate and severe) and no pruning. The emergence of bud was earliest in severe pruning, number of buds per shoot was highest with light pruning and cumulative lengths of new shoots were found to be highest in severe pruning. Fruit yield, size and weight were found to increase with pruning intensities and lowest in case of no pruning. Regarding chemical properties, total soluble solids and total sugar found to increase with enhanced pruning severity and least in case of no pruning. Acidity was found to be highest with no pruning and decrease with increase in pruning intensities. Overall pruning found to have rejuvenating impact on aged trees due to better light interception leading to better photosynthetic rate, better nutrient and water supply with reduced canopy and better quality yields.

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Studies of Physico-chemical Changes Due to Fruit Thinning in Guava (Psidium guajava L.)

Cited by 5 publications

References 1 publication

Effect of number and criteria of young fruitsin locoon yield of mango

Effect of number and criteria of young fruitsin locoon yield of mango

Studies on crop load, fruit thinning and their effects on growth attributes of guava (Psidium guajava L.) cv. ALLAHABAD SAFEDA under meadow planting system

Effect of Pruning Intensities on the Performance of Fruit Plants under Mid-Hill Condition of Eastern Himalayas: Case Study on Guava

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