Estimation of Nectar Secretion, Sugar Content and Honey Production of Prunus mume (Siebold) Siebold & Zucc.

The honey production capacity of bee flora is used to estimate the optimum colony carrying capacity of given area that helps to harvest the best honey yield. The research was conducted to quantify the nectar secretion pattern, the effect of temperature and humidity on dynamics of nectar secretion, and honey production capacity of Callistemon citrinus. One day before nectar collection, five inflorescences were enclosed with mesh bags on different branches of the tree. From these, twenty flowers were randomly selected per tree for the measurement of nectar volume. Additionally, nectar volume and concentration, temperature, and air humidity were measured with an interval of one hour. One way ANOVA and linear regression were used for data analysis. The average amount of nectar and its concentration were different significantly within the time of the day. Nectar amount was correlated positively with humidity while concentration was negatively correlated with temperature. The average nectar volume (µl) per flower in 24 hours, sugar amount per tree (kg), honey yield per individual tree (kg) and honey production capacity of Callistemon citrinus per hectare were 10.9+0.4, 0.65, 0.79, and 1264 kg (46-3808 kg), respectively. The real expected honey yield was 632 kg ha-1. Total financial return was estimated to be $4424 based on a value of $7 kg-1 of Callistemon citrinus honey. Therefore, the multiplication and plantation of this plant are suggested for honey production.

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Nectar Secretion Dynamics and Honey Production Potential of Croton macrostachyus L., Euphorbiaceae

Bee World ◽

10.1080/0005772x.2020.1763086 ◽

2020 ◽

Vol 97 (4) ◽

pp. 123-127

Author(s):

Tura Bareke ◽

Tolera Kumsa ◽

Kasim Roba ◽

Admassu Addi

Keyword(s):

Nectar Secretion ◽

Production Potential ◽

Honey Production ◽

Croton Macrostachyus

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Evaluation of the apicultural value of sunflower hybrids

Acta Agronomica Hungarica ◽

10.1556/aagr.56.2008.1.10 ◽

2008 ◽

Vol 56 (1) ◽

pp. 91-97 ◽

Cited By ~ 2

Author(s):

E. Zajácz ◽

T. Szalai ◽

G. Mészáros

Keyword(s):

Honey Bees ◽

Sugar Content ◽

Nectar Production ◽

Honey Production ◽

Partial Data ◽

High Sugar Content ◽

Nectar Sugar ◽

Production Value ◽

The Individual ◽

Selection Of

Sunflower is one of the most important bee-pasture crops and the leading oil crop plant in Hungary. There are very few studies concerning the nectar production of the plant, most of which consist only of partial data that show the apicultural value of sunflower under intensive cultivation conditions.The nectar production and nectar sugar concentration of six sunflower hybrids, Arena, Alexandra, Cledor, Coriste, Hysun 321 PR and Louidor, were examined in Mezőhegyes (south-east Hungary) from 2002 to 2004. The aim was to determine the nectar production and overall apicultural value of the hybrids. In the experiment the agroecological conditions were also examined and recorded. These agroecological conditions showed a distinctive effect on the consistency of the apicultural values of the hybrids.It can be determined from the results that the nectar production and its sugar content can be modified measurably by external factors. The nectar quantity was measurably increased by abundant precipitation during flowering, while an increase in the nectar sugar content was caused by excessively low air temperature. During these three years the average nectar production of the hybrids was 0.147 mg/floret, with a sugar content of 48.8%. Significant differences were found between the hybrids in nectar production and in the nectar sugar concentration.Averaged over three years Coriste displayed the best apicultural value. Its nectar production was stable and high (0.167 mg/floret). Its high sugar content (49.1%) also proved to be attractive to honey bees (sugar value 0.082). The lowest apicultural value was displayed by the hybrid Alexandra, with a sugar value of 0.059. This suggests that the honey production value of the individual hybrids should be taken into consideration during the selection of bee pastures.

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Pengaruh Pemberian Sari Tebu (Saccharum officinarum L.) terhadap Kadar Gula Madu Lebah Apis mellifera

BIOSAINTROPIS (BIOSCIENCE-TROPIC) ◽

10.33474/e-jbst.v6i1.278 ◽

2020 ◽

Vol 6 (1) ◽

pp. 21-27

Author(s):

Rodhiyatul Maghfiroh ◽

Hari Santoso ◽

Ratna Djuniwati Lisminingsih

Keyword(s):

Apis Mellifera ◽

Sugar Cane ◽

Honey Bees ◽

Sugar Content ◽

Saccharum Officinarum ◽

Honey Production ◽

Alternative Feed ◽

Sugar Levels ◽

Bee Colonies ◽

Effect Of Feeding

The disruption of nectar and pollen providers for honey bees is currently a problem in the availability of natural feed. During the dry season, alternative feed sources are given to bee colonies to increase honey production. The purpose of this study was to determine the effect of feeding of sugarcane juice (Saccharum officinarum) on the sugar content of Apis mellifera honey with a comparison of the original feed in the form of nectar and pollen. This research was conducted at Batu city beekeeping. The method in this study used 4 treatments and 6 replications using the ANOVA test which was processed using SPSS 16 Analysis of the results obtained were PS 881 Sugar Cane, BL Sugar Cane, PSJK Cane is the same, but different from the control. Sugar cane has an influence on increasing sugar levels in honey. Keywords: Artificial feed, refractometer ABSTRAK Terganggunya penyedia nektar dan polen bagi lebah madu saat ini merupakan permasalahan dalam ketersediaan pakan alami. Pada saat musim paceklik, diberikan sumber pakan alternatif kepada koloni lebah untuk meningkatkan produksi madu. Tujuan penelitian ini yaitu untuk mengetahui pengaruh pemberian pakan sari tebu (Saccharum officinarum) terhadap kadar gula madu Apis mellifera dengan perbandingan pakan asli berupa nektar dan polen. Penelitian ini dilakukan di peternakan lebah kota Batu. Metode pada penelitian ini menggunakan 4 perlakuan dan 6 ulangan dengan menggunakan uji Anova yang diolah menggunakan SPSS 16. Analisis hasil yang didapatkan yaitu Tebu PS 881, Tebu BL , Tebu PSJK adalah sama, tetapi berbeda dengan kontrol. Tebu memiliki pengaruh terhadap peningkatan kadar gula pada madu. Kata Kunci: Pakan buatan, refraktometer

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Flowering and Nectar Secretion in two Forms of the Moldavian Dragonhead (Dracocephalum moldavica L.) – A Plant with Extraordinary Apicultural Potential

Journal of Apicultural Science ◽

10.2478/jas-2018-0010 ◽

2018 ◽

Vol 62 (1) ◽

pp. 97-110 ◽

Cited By ~ 3

Author(s):

Marta Dmitruk ◽

Elżbieta Weryszko-Chmielewska ◽

Aneta Sulborska

Keyword(s):

Sugar Content ◽

Corolla Tube ◽

Sugar Yield ◽

Total Sugar ◽

Nectar Secretion ◽

Flower Visitors ◽

Corolla Length ◽

Leaf Surfaces ◽

The Mean

Abstract Dracocephalum moldavica is a valuable reward plant for flower visitors. The aim of the study was to ecologically characterise its flowers and leaves and assess the seasonal and daily dynamics of flowering in two white- and blue-flowered forms of this species in 2004 and 2005. Additionally, the duration and abundance of plant flowering as well as the nectar amount and sugar content were analysed. The signalling attractants of the plant include an intense scent emitted by trichomes located not only on its flowers but also on its stem and leaf surfaces. The average corolla length is 24 mm and the corolla tube, which can be completely filled with nectar, is 8.6 mm long. The floral lifespan was shown to reach 2-3 days and the mean blooming duration of both forms of dragonhead 45-48 days. The white-flowered plants produced a substantially greater number of flowers (5352) than the blue-flowered form (2965). The nectar amount obtained from ten blue flowers was 15.33 mg and that extracted from white flowers reached 17.56 mg, with 49.4% and 51.5% content of sugar, respectively. The total sugar mass produced by one white-flowered plant was 4656 mg, while one blue-flowered plant yielded 2164 mg of sugars. The sugar yield calculated in the study for the white-flowered form (586 kg · ha−1) was two-fold higher than that in the blue-flowered plants.

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Nectar Production in Abutilon III. Sugar Secretion

Australian Journal of Biological Sciences ◽

10.1071/bi9710665 ◽

1971 ◽

Vol 24 (3) ◽

pp. 665 ◽

Cited By ~ 23

Author(s):

Nele Findlay ◽

ML Reed ◽

FV Mercer

Keyword(s):

Osmotic Pressure ◽

External Medium ◽

Sucrose Solution ◽

Sucrose Concentration ◽

Sugar Content ◽

Total Sugar ◽

Nectar Secretion ◽

Nectar Production ◽

Steady Rate ◽

Two Phases

Analysis of Abutilon nectaries shows that the sugar content of the nectary rises sharply as nectar secretion begins. Nectar secretion on the plant occurs at a steady rate of 2-5 mg total sugar per flower. hour for 36-48 hr. A total of about 100 mg sugar per flower is secreted, and this is about seven times the maximum sugar content of the nectary at any time. Secretion of sugar in nectar by isolated nectaries floating on 0--0� 4M sucrose solution is in two phases. During phase I the rate is independent of concentration of sucrose in the external medium, but the rate is decreased by increasing the osmotic pressure of the medium with mannitol. In phase II the rate of secretion of sugar depends on the concentration of sucrose in the external medium and is independent of increase in osmotic pressure with mannitol. The rate is zero on water and reaches a maximum on about O� 4M sucrose. Secretion is reduced in both phases on media of sucrose concentration

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Floral Phenology, Nectar Secretion Dynamics, and Honey Production Potential, of Two Lavender Species (Lavandula Dentata, and L. Pubescens ) in Southwestern Saudi Arabia

Journal of Apicultural Science ◽

10.1515/jas-2015-0028 ◽

2015 ◽

Vol 59 (2) ◽

pp. 135-144 ◽

Cited By ~ 1

Author(s):

Adgaba Nuru ◽

Ahmad A. Al-Ghamdi ◽

Yilma T. Tena ◽

Awraris G. Shenkut ◽

Mohammad J. Ansari ◽

...

Keyword(s):

Saudi Arabia ◽

Early Morning ◽

Nectar Secretion ◽

Flowering Pattern ◽

Honey Production ◽

Species Overlap ◽

Floral Phenology ◽

Efficient Resource ◽

Nectar Sugar ◽

The Mean

AbstractThe aim of the current study was to determine the floral phenology, nectar secretion dynamics, and honey production potentials of two naturally growing lavender species (L. dentata and L. pubescens), in southwestern Saudi Arabia. In both species, flowering is continuous. This means that, when open flowers on a spike are shaded, new flowers emerge. Such a flowering pattern might be advantageous to the plant to minimise competition for pollinators and promote efficient resource allocation. The flowering periods of the two species overlap. Both species secreted increasing amounts of nectar from early morning to late afternoon. The mean maximum volumes of accumulated nectar from bagged flowers occurred at 15:00 for L. pubescens (0.50 ± 0.24 μL/flower) and at 18:00 for L. dentata (0.68 ± 0.19 μL/flower). The volume of the nectar that became available between two successive measurements (three-h intervals) varied from 0.04 μL/flower to 0.28 μL/flower for L. pubescens and from 0.04 μL/flower to 0.35 μL/ flower for L. dentata, This variation reflects the differences in the dynamics of nectar secretion by these species, and indicates the size of the nectar that may be available for flower visitors at given time intervals. The distribution of nectar secretions appears to be an adaptation of the species to reward pollinators for longer duration. Based on the mean amount of nectar sugar secreted by the plants, the honey production potentials of the species are estimated to be 4973.34 mg and 3463.41 mg honey/plant for L. dentata and L. pubescens, respectively.

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Nectar of Ziziphus spina-christi (L.) Willd (Rhamnaceae): Dynamics of Secretion and Potential for Honey Production

Journal of Apicultural Science ◽

10.2478/v10289-012-0023-9 ◽

2012 ◽

Vol 56 (2) ◽

pp. 49-59 ◽

Cited By ~ 7

Author(s):

Adgaba Nuru ◽

Awad M. Awad ◽

Ahmad A. Al-Ghamdi ◽

Abdulaziz S. Alqarni ◽

Sarah E. Radloff

Keyword(s):

High Potential ◽

Nectar Secretion ◽

Flowering Stage ◽

Average Mass ◽

Honey Production ◽

Potential Value ◽

Repeated Sampling ◽

Nectar Sugar

Abstract The nectar secretion of Ziziphus flowers was studied by removing and measuring the nectar every four hours, for two consecutive days, from 88 flowers of four trees (‘repeated sampling’). In another 120 flowers from the same trees, the accumulated sugar was measured at the end of the flowering stage. The mass of the nectar sugar was determined following the washing technique. The total amount of sugar per tree was calculated by multiplying the number of flowers per tree by the average mass of nectar sugar secreted per flower. The average mass of sugar produced per flower in repeated sampling was 0.79±0.54 mg/flower (range 0.09 - 2.48 mg). The average mass of sugar per flower for each of the four investigated trees was 1.43±0.53 mg, 0.72±0.27 mg, 0.94±0.39 mg and 0.37±0.26 mg, respectively. The differences among trees was statistically significant. For accumulated nectar, the overall average mass of sugar per flower was 0.55±0.23 mg (range 0.06 - 1.29 mg) and the average values for flowers on the investigated trees of Z. spina-christi were 0.69±0.26 mg, 0.41±0.16 mg, 0.51±0.16 mg and 0.53±0.21 mg; these variations were statistically significant. The average mass of nectar sugar calculated for the flowers with accumulated nectar sampling was significantly lower than the average mass of sugar recorded for repeated nectar sugar samplings (0.79±0.54 mg). According to this study, one Ziziphus tree is estimated to produce 3.6 kg of honey (range 2.2 - 5.2 kg), equivalent to about 900 kg of honey/ha (range 550 - 1300 kg). These figures indicate the high potential value of the plant for honey production. Nectar secretion was positively correlated with temperature, indicating the adaptation of the tree to hot climates.

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Effect of weather factors and nitrogen application on nectar secretion and honey production potential in sunflower

Journal of Agrometeorology ◽

10.54386/jam.v22i4.453 ◽

2021 ◽

Vol 22 (4) ◽

pp. 457-468

Author(s):

NAVDEEP KAUR ◽

PARDEEP K. CHHUNEJA ◽

JASPAL SINGH ◽

AMIT CHOUDHARY ◽

S.K. DHILLON

Keyword(s):

Relative Humidity ◽

Fertilizer Application ◽

Soluble Solids ◽

Nitrogen Application ◽

Nectar Secretion ◽

Production Potential ◽

Weather Factors ◽

Honey Production ◽

Weather Parameters ◽

Nectar Availability

Sunflower is a highly important bee floral crop. The nectar secretion governs this parameter and is greatly influenced by cultivar, environmental factors and fertilizer application. Studies were conducted at Punjab Agricultural University, Ludhiana on sunflower hybrids (PSH 996 and PSH 1962) sown on different dates (January 31, February 10, February 20 and March 2) with three levels of nitrogen (45, 60 and 75 kg ha-1). Delay in sowing from January 31 to March 2 caused significant reduction in nectar secretion (12.66%) and increase in its concentration (5.38%). The daily mean temperature had significant positive (R2 = 0.52 and 0.54) while mean relative humidity had negative (R2 = 0.55 and 0.37) correlation with nectar total soluble solids (TSS).Nectar secretion and its TSS increased significantly only at nitrogen dose of 60 kg ha-1 as compared to 45 kg ha-1.Weather parameters have more pronounced effects on TSSat 45 kg ha-1.Delay in sowing by one month resulted in reduction in honey production potential by 1.5- 1.8 kg ha-1. In addition to this, the reduced nectar availability due to delay in sowing may negatively effect in attracting and sustaining pollinators’ populations and crop yield.

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