Author: Basil Furgala
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Effect of the Honey Bee, Apis Mellifera (L.) on the Seed Set, Yield and Hybridization of the Cultivated Sunflower, Helianthus Annuus L.
Author: Basil Furgala
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Effect of the Honey Bee, Apis Mellifera (L.), on the Seed Set, Yield and Hybridization of the Cultivated Sunflower, Helianthus Annus L.
Author: Basil Furgala
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Insect Pollination of Cultivated Crop Plants
Author: Samuel Emmett McGregor
Publisher:
ISBN:
Category : Abeille
Languages : en
Pages : 428
Book Description
Publisher:
ISBN:
Category : Abeille
Languages : en
Pages : 428
Book Description
Agriculture Handbook
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 428
Book Description
Set includes revised editions of some issues.
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 428
Book Description
Set includes revised editions of some issues.
Economically Important Foreign Weeds
Author: Clyde Franklin Reed
Publisher:
ISBN:
Category : Bee culture
Languages : en
Pages : 686
Book Description
Publisher:
ISBN:
Category : Bee culture
Languages : en
Pages : 686
Book Description
Proceedings of the Entomological Society of Manitoba
Author: Entomological Society of Manitoba
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 464
Book Description
Issues for 1945-1966 consist of papers and minutes; 1967-1979 consist chiefly of minutes, 1980- consist of papers and minutes.
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 464
Book Description
Issues for 1945-1966 consist of papers and minutes; 1967-1979 consist chiefly of minutes, 1980- consist of papers and minutes.
Turkish Journal of Biology
Author:
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 1540
Book Description
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 1540
Book Description
Contribution of Managed Honeybees (Apis Mellifera Scutellata Lep.) to Sunflower (Helianthus Annuus L.) Seed Yield and Quality
Author: Gebreamlak Bezabih Tesfay
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Insects are considered to be responsible for 80-85% of all pollination, with honeybees being well known for their pollination services for many crops. The effect of managed honeybee pollination on sunflower seed yield and quality (germination percentage and oil content) was investigated at the University of Pretoria experimental farm and in commercial sunflower fields at Settlers. This was done through pollinator exclusion and pollinator surveys on sunflower field plots located at different distances from managed honeybee colonies. Observations on the foraging behaviour and activity of honeybees throughout the day were also made. The data presented in this thesis reveal that seed quantity and quality of sunflower increased significantly as a result of insect visits. Insect pollination improved the mass of 100 seeds (by 38%), as well as their germination percentage (by 38%) and oil content (by 36%). Moreover, visitation frequency, seed yield and quality were negatively correlated with distance to the honeybee hives, suggesting that the distribution of honeybee colonies is not enough to maintain an adequate pollination service throughout the large sunflower fields at Settlers. Honeybee foraging activity varied throughout the day, the highest activity being from 9h00 until 16h00, and activity was correlated with temperature. The results of this study suggest that the use of managed honeybees in sunflower crop production can effectively increase the seed quality and quantity, but additional management measures should be considered to improve production in large monocropping farms that are currently isolated from pollinator sources. Additional provision of honeybee colonies is needed in sunflower production areas during the flowering period. Furthermore, as our results show that in the presence of pollinators other than honeybees seed yield was also improved, management measures that promote the biodiversity of sunflower visitors may also have an important contribution.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Insects are considered to be responsible for 80-85% of all pollination, with honeybees being well known for their pollination services for many crops. The effect of managed honeybee pollination on sunflower seed yield and quality (germination percentage and oil content) was investigated at the University of Pretoria experimental farm and in commercial sunflower fields at Settlers. This was done through pollinator exclusion and pollinator surveys on sunflower field plots located at different distances from managed honeybee colonies. Observations on the foraging behaviour and activity of honeybees throughout the day were also made. The data presented in this thesis reveal that seed quantity and quality of sunflower increased significantly as a result of insect visits. Insect pollination improved the mass of 100 seeds (by 38%), as well as their germination percentage (by 38%) and oil content (by 36%). Moreover, visitation frequency, seed yield and quality were negatively correlated with distance to the honeybee hives, suggesting that the distribution of honeybee colonies is not enough to maintain an adequate pollination service throughout the large sunflower fields at Settlers. Honeybee foraging activity varied throughout the day, the highest activity being from 9h00 until 16h00, and activity was correlated with temperature. The results of this study suggest that the use of managed honeybees in sunflower crop production can effectively increase the seed quality and quantity, but additional management measures should be considered to improve production in large monocropping farms that are currently isolated from pollinator sources. Additional provision of honeybee colonies is needed in sunflower production areas during the flowering period. Furthermore, as our results show that in the presence of pollinators other than honeybees seed yield was also improved, management measures that promote the biodiversity of sunflower visitors may also have an important contribution.
The Indispensable Pollinators
Author:
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 244
Book Description
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 244
Book Description
Canadian Journal of Plant Science
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 600
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 600
Book Description