References
- Ahn SB, Kim IS, Cho WS, Choi KM (1989) Survey on the present situation of honeybee use as the pollinator in the plastic house of strawberry cultivation area by the questionairs. Korean J Apiculture 4(1), pp. 18.
- Ahn SB, Lee SH, Choi KM, Cho WS, Woo KS (1994) Optimum population size of honeybee for strawberry pollination in the vinyl house. Korean J Apiculture 9(2), pp. 113-116.
- Bagnara D, Vincent C (1988) The role of insect pollination and plant genotype in strawberry fruit set and fertility. J Hort Sci 63, 69-75.
- Chagnon MJ, Gingras D, de Oliveira (1993) Complementary aspects of strawberry pollination by honey and indigenous bees (Hymenoptera). J Econ Entomol 86, 416-420. https://doi.org/10.1093/jee/86.2.416
- Conno LJ (1970) Studies of strawberry pollination in Michigan. Report of the 9th Pollination Conference 157-162.
- Free JB (1968a) The pollinating of strawberry by honeybees. J Hort Sci 43, 107-111.
-
Free JB (1968b) The foraging behaviour of honeybees (Apis mellifera) and bumblebees (Bombus spp.) on blackcurrent (Ribes nignum), rasberry (Rubus idaeus) and strawberry (Fragaria
$\times$ ananassa) flowers. J appl Ecol 5, 157-168. https://doi.org/10.2307/2401280 - Free JB (1970) Insect pollination of crops. Academic Press. pp. 544.
- Gang SY (1996) The technical work of strawberry forcing culture. Korea press. pp. 166.
- Gawasado G, Agagi D (1971) The using method of honeybee as pollinator in strawberry cultivating house. Agriculture and horticulture 46, 1049-1053.
- Graham JM (1993) The hive and the honey bee. pp. 13-24.
- Hughes HM (1961) Preliminary studies on the insect pollination of soft fruits. Experimental Horticulture 6, 44.
- Inouae DJ, Inouae GH (1972) Management method of honeybee using in house. Agriculture and horticulture pp. 94-898.
- Katayama E (1987) Utilization of honeybees as pollination for strawberries in plastic greenhouse. Honeybee Science 8, 147-150.
- Kitagawa S (1985) Pollination of strawberries in the greenhouse by honeybees. Apimondia 29, 378-380.
- KOSIS Hompage (2013) Korean Statistical Information Service/ Agriculture, Foresty and Fishery/Agriculture/Survey of Agricultural Area/Fruit Vegetable/Strawberry. http://www.kosis.kr
- Kronenberg HG (1959) Poor fruit setting in strawberries. I. Causes of a poor fruit set in strawberries in general. Euphytica 8, 47-57.
- Kronenberg HG, Braack JP, Zeilinga AE (1959) Poor fruit setting in strawberries. II. Mal-formed fruits in Jucunda. Euphytica 8, 245-251. https://doi.org/10.1007/BF00039367
- Lee MY (1999) Pollination effects of honeybees (Apis mellifera L., A. cerana F) and bumblebees(Bombus terrestris L., B. ignitus S.) on strawberry and tomato in plastic house, and indoor rearing of Korean indigenous bumblebee species. ChungNam University Ph. D. thesis. pp. 64-83.
- Lee MY, Mah YI, Chang YD, Kim TI, Park IK (1998) Effect of Apis mellifera on fruit production of strawberry cultivated in the vinyl-house. Korean J Apiculture 13(1), 21-26.
- Lee SB, Yoon HJ, Park IG, Kim YS, Lee MY, Lee ML (2006) Comparison on the pollinating activities of bumblebee, Bombus terrestris L. and honeybee, Apis mellifera L. (Hymenoptera: Apidae) in the strawberry houses. Korean J Apiculture 21(2), 125-130.
- Lee SB, Lee KY, Ha NG, Yoon HJ, Park IG, Hwang SJ, Gang HS (2007) The status of the pollinator uses on major economical crops in Korea. Korean J Apiculture 22(1), 79-86.
- Lee SB, Ha NG, Lee KY, Yoon HJ, Park IG, Gang HS, Hwang SJ, Lee MY, Choi K (2008) Characteristics and effects on the pollinating activities of honeybee, Apis mellierfa L. and whitetailed bumblebee, Bombus terrestris L. (Hymenoptera: Apidae) in strawberry vinyl houses. Korean J Apiculture 23(2), 73-81.
- McGregor SE (1976) Insect pollination of cultivated crop plants. Agr Res Serv. Unites States Dep. of Agric., Handb. No. 496.
- Moore JN (1969) Insect pollination of strawberries. J Amer Soc Hort Sci 94, 362-364.
- NSSES Hompage (2013) Nonsan strawberry experiment station/ Nonsan strawberry history. http://strawberry.cnnon.gup.net
- Nye WP, Anderson JL (1974) Insect pollinators frequenting strawberry blossoms and the effect of honey bees on yield and fruit quality. J Amer Soc Hort Sci 99, 40-44.
- Parker RL (1926) The collection and utilization of pollen by the honeybee. Mem cornell agric Exp Stn. No. 98.
- Petkov V (1965) Contribution of honeybees to the pollination of strawberries. Gradinar lozar nauk 2, 421-431.
- Petkov V, T Simidchiev (1965) The role played by bees in the pollination of lucerne. XX Int Beekeep Congr (II/3).
-
Pion S, de Oliveira D, Paradis RO (1980) Agents pollinasateurs et productivite du fraisier "Redcoat", Fragaria
$\times$ ananassa Duch. Phytoprotection 61, 72-78. - Rashad SED (1957) Some factors affecting pollen collection by honeybee and pollen as a limiting factor in brood rearing and honey production. Ph.D. Thesis, Kansas St. Univ.
- RDA(Rural Development Administration) Hompage (2013) Technology Information/Total agricultural Technology Information/ Crop Technology Information/Fruit vegetable/Strawberry. http://www.rda.go.kr
- Sasaki M (1984) Comparison aspects of the honeybees as pollinators and a proposal of large scale use of the revived beecollected pollen after long storage. Honeybee Science 5, 55-62.
- Sakai T, Matsuka M (1988) Bee-pollination in Japan, with special reference to strawberry production. Honeybee Science 9, 97-101.
- Seo DK, Lee SB, Lee SY, Park SH, Kim DS, Kim WT, Park KH, Choi YC (2011) An economic analysis of pollinator's activities on the production of major fruit trees in Korea.
- Shaw FR, Savos M, Shaw WM (1954) Some observation on the collecting habits of bees. American Bee J 94, pp. 422.
- Shimotori K (1981) Honeybees and strawberry industry in Tochigi. Honeybee Science 2, 57-60.
-
Svensson B (1991) The importance of honeybee-pollination for quality and quantity of strawberries (Fragaria
$\times$ ananassa) in Central Sweden. Acta Horticulturae pp. 260-264. - Tsujikawa Y (1981) Honeybees in greenhouses, their effects on strawberries and a problem of UV-cut firm house. Honeybee Science 2(2), 49-56.
- Yoon HJ, Lee KY, Kim MA, Park IG, Choi YC (2011) Current status of insect pollinator use in strawberry crop in Korea. Korean J Apiculture 26(2), 143-155.