Preflower Irrigation and Paclobutrazol Dependent Fruit Number and Water Use Efficiency Responses in Young Mango Trees

Bithell, S. L.; Hearnden, Mark; Diczbalis, Y.; Wicks, C.

doi:10.17660/actahortic.2013.992.15

Cited by 2 publications

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“…Flowering and fruit production are promoted, depending on the dose of the chemical, tree agronomy and the weather (Kurian and Iyer, 1993a,b,c;Burondkar et al, 1997Burondkar et al, , 2013Blaikie et al, 2004;Bithell et al, 2013;Hasan et al, 2013;Salvi et al, 2013;García de Niz et al, 2014;Narvariya et al, 2014;Shankaraswamy and Neelavathi, 2016). An analysis of production in Maharashtra in India indicated that the financial returns were more than 150% higher using paclobutrazol compared with standard growing practices .…”

Section: Use Of Growth Regulators To Control Tree Sizementioning

confidence: 99%

Can the productivity of mango orchards be increased by using high-density plantings?

Menzel¹,

Lagadec²

2017

Scientia Horticulturae

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a b s t r a c tMango (Mangifera indica) trees are traditionally established at about 100-200 trees per ha and eventually grow into large specimens 10 m tall or more, making spraying and harvesting difficult. It also takes a long time to recover the initial costs of establishing and maintaining the orchard. There has been considerable interest in planting orchards up to 4000 trees per ha to take advantage of early production and to increase economic returns. However, trees planted at high density soon begin to crowd and shade each other and production falls. We reviewed the performance of high-density orchards in different growing areas, and the role of dwarfing cultivars and rootstocks, tree canopy management and the growth regulator, paclobutrazol to control tree growth. There has been no general agreement on the optimum planting density for commercial orchards which vary from 200-4000 trees per ha in different experiments. Some potential dwarfing material has been developed in India and elsewhere, but these cultivars and rootstocks have not been widely integrated into high-density orchards. Canopy management needs to take into account the effect of pruning on the regrowth of the shoots and branches, light distribution through the canopy and the loss of the leaves that support the developing crop. Pruning must also take into account the effect of vegetative growth on flower initiation. Annual light pruning usually provides better fruit production than more severe pruning conducted less regularly. There have only been a few cases where it has been demonstrated that paclobutrazol can counteract the negative effect of pruning on flowering and fruit production. There are also concerns with residues of this chemical in export markets and contamination of ground waters. The future development of high-density plantings in this crop is dependent on the use of dwarfing cultivars and/or rootstocks and better canopy management strategies. Dwarfing cultivars and rootstocks should provide small-to medium-sized trees with medium to large yields. This can readily be identified in experiments by examining the relationship between yield and tree growth. Research on canopy management should assess the impact of pruning on flowering, light distribution within the canopy and the leaf area supporting the developing crop. The productivity of mango is not likely to be increased by the use of high-density plantings without extensive efforts in plant breeding and canopy management.Crown

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Section: Use Of Growth Regulators To Control Tree Sizementioning

confidence: 99%

Can the productivity of mango orchards be increased by using high-density plantings?

Menzel¹,

Lagadec²

2017

Scientia Horticulturae

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“…The application of PBZ with the right dose and the right dry time can induce flowering thereby prolonging the production period of citrus fruits. According to Bithell et al (2013), mango plants given PBZ treatment and low to moderate pre-flowering irrigation rates increased the number of fruit per tree especially in the off-season. Determining the right irrigation level is important to improve the efficiency-yield relationship water for PBZtreated trees.…”

Section: Introductionmentioning

confidence: 99%

Application Paclobutrazol and Duration of Drought Stress to Flowering Induction in Chokun Orange

Azizah

Sakhidin

Saparso

et al. 2022

Caraka Tani J. Sustain. Agric.

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Induction of flowering is one of the efforts that can extend the production period of Chokun oranges. This study aims to determine the effect of the dose of paclobutrazol (PBZ), duration of drought stress and the combination of treatments that gives the best results on the Chokun orange (Citrus sp.). The research design used was randomized complete block design (RCBD), consisting of 3 replications. The treatment in this study was a combination of the dose of PBZ (control, active ingredient 0.75 g plant-1 and active ingredient 1.5 g plant-1) and duration of drought stress (control, 1, 2 and 3 weeks). The results show that the application of PBZ and duration of drought stress can induce the flowering of citrus plants as seen from the generative shoot variables with a quadratic model on the equation y = -17.778x2 + 31.556x + 26.667 at the optimum dose of 0.89 g plant-1 of active ingredient and 1 week of drought. The dry period of 3 weeks gives the best results seen from variables of the number of flowers and number of fruits. In general, the results suggest that the application of PBZ and duration of drought stress can transfer from the vegetative phase to the generative phase which in turn could induce the flowering of citrus plants.

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Preflower Irrigation and Paclobutrazol Dependent Fruit Number and Water Use Efficiency Responses in Young Mango Trees

Cited by 2 publications

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Can the productivity of mango orchards be increased by using high-density plantings?

Can the productivity of mango orchards be increased by using high-density plantings?

Application Paclobutrazol and Duration of Drought Stress to Flowering Induction in Chokun Orange

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