World Journal of Agricultural Research
ISSN (Print): 2333-0643 ISSN (Online): 2333-0678 Website: http://www.sciepub.com/journal/wjar Editor-in-chief: Rener Luciano de Souza Ferraz
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World Journal of Agricultural Research. 2019, 7(1), 8-13
DOI: 10.12691/wjar-7-1-2
Open AccessArticle

The Critical Period for Thinning Carrot (Daucus carota L.)

Gagopale Bosekeng1,

1Department of Agricultural Research, Horticulture Program, Ministry of Agriculture, P.O. Box 10275 Francistown, Botswana

Pub. Date: January 10, 2019

Cite this paper:
Gagopale Bosekeng. The Critical Period for Thinning Carrot (Daucus carota L.). World Journal of Agricultural Research. 2019; 7(1):8-13. doi: 10.12691/wjar-7-1-2

Abstract

Field experiment was carried out at Impala Research station, in Botswana, aiming at investigating critical period for thinning of carrot (Daucus carota L.). The experiment was laid out in a complete randomized block design (CRBD), replicated three times and was repeated four times at different sowing dates. Seeds were sown at the same rate (3 kg ha-1) in all plots to obtain an equal plant population at initial stage, thereafter thinned at different times (2nd, 3rd, 4th, 5th and 6th weeks after emergence) to 30 cm between rows and 5 cm between intra rows to maintain constant population across the experiment. Days to maturity were constant from sowing to harvest in all the sowing dates. Plant height and yield significantly declined as thinning time was delayed. Number of leaves developed, root diameter and root length were not influenced by the thinning time. Vegetative growth and yield declined with the late sown experiments. It can be concluded that thinning time significantly increase plant height and yield, especially at earlier stages and carrot yield best when sown earlier in the season.

Keywords:
carrot thinning time storage root growth yield

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References:

[1]  Bystrická, J., Kavalcová, P., Musilová, J., Vollmannová, A., Tóth, T. and Lenková, M. Carrot (Daucus carota L. ssp. sativus (Hoffm.) Arcang.) as source of antioxidants. Acta Agriculturae Slovenica. 105(2), 303-311, 2015.
 
[2]  Sharma, K.D., Karki, S., Thakur, N.S. and Attri, S. Chemical composition, functional properties and processing of carrot-a review. Journal of Food Science and Technology. 49(1), 22-32, 2012.
 
[3]  Hochmuth, G.J., Brecht, J.K. and Bassett, M.J. Fresh-market carrot yield and quality did not respond to potassium fertilization on sandy soil validated by mehlich-1 soil test. HortTechnology. 16(2), 270-276, 2006.
 
[4]  Umuhoza, J.N.K., Sylvestre, H. and Philippe, S. Nutritional quality of carrot (Daucus carota L.) as influenced by farm yard manure. World Journal of Agricultural Sciences. 2(5), 102-107, 2014.
 
[5]  Department of Crop Production. Annual horticulture early warning report. Ministry of Agriculture and food security, Botswana. March, 2016.
 
[6]  Department of Agricultural Business Promotion. Monthly agricultural price bulletin. Ministry of Agriculture, Botswana. Vol. 9, Issue 1, 2017.
 
[7]  Karklelienė, R., Radzevicius, A., Dambrauskienė, E., Survilienė, E., Bobinas, C., Duchovskienė, L., Kavaliauskaitė, D and Bundinienė, O. Root yield, quality and disease resistance of organically grown carrot (Daucus sativa Rӧhl.) hybrids and cultivars. Zemdirbyste=Agriculture. 99(4), 393-398, 2012.
 
[8]  Kwiatkowski, C.A., Kolodziej, B. and Woźniak, A. Yield and quality parameters of carrot (Daucus carota L.) roots depending on growth stimulators and stubble crops. Acta Scientiarum Polonorum. Hortorum cultus 12(5), 55-68, 2013.
 
[9]  Mehedi, T.A., Siddique, M.A. and Shahid, S.B. Effects of urea and cowdung on growth and yield of carrot. Journal of the Bangladesh Agricultural University. 10(1), 9-13, 2012.
 
[10]  Collins, N.C., Tardieu, F. and Tuberosa, R. Quantitative trait loci and crop performance under abiotic stress: Where do we stand?. Plant Physiol. 147, 469-486, 2008.
 
[11]  Ahmed, A., Sambo, B.E., Arunah, U.L. and Odion, E.C. Response of farmyard manure and inorganic fertilizers for sustainable growth of carrot (Daucus carota L.) in Northern Nigeria. Journal of Agriculture and Veterinary Science. 7(2), 18-25, 2014.
 
[12]  Appiah, F.K., Sarkodie-Addo, J. and Opoku, A. Growth and yield response of carrot (Daucus carota L.) to different green manures and plant spacing. Journal of biology, Agriculture and Healthcare. 7(20), 16-23, 2017.
 
[13]  Jensen, K.I.N., Doohan, D.J. and Specht, E.G. Response of processing carrot to metribuzin on mineral soils in Nova Scotia. Canadian Journal of Plant Science. 84, 669-676, 2004.
 
[14]  Jovchelevich, P. Influence of moon rhythms on yield of carrot (Daucus carota L.), under biodynamic management. In: G. Rahmann & U. Aksoy (Eds.). ‘Building organic bridges’: Proceedings of the 4th ISOFAR scientific conference (pp 77-80). Istanbul, Turkey. 77-88, 2014.
 
[15]  Mehedi, T.A., Alam, M.R. and Rashid, M.H.A. Growth and yield of carrot as influenced by nitrogen level and crop duration. Bangladesh Journal of Progressive Science and Technology. 6(1), 165-168, 2008.
 
[16]  Lana, M.M. The effects of line spacing and harvest time on processing yield and root size of carrot for cenourete® production. Horticultura Brasileira. 30(2), 304-311, 2012.
 
[17]  Abdel-mawly, S. E. Growth, yield, N uptake and water use efficiency of carrot (Daucus carota L.) plants as influenced by irrigation level and nitrogen fertilization rate. Assiut University Bulletin for Environmental Researches. 7(1), 111-122, 2004.
 
[18]  Moniruzzaman, M., Akand, M.H., Hossain, M.I., Sarkar, M.D. and Ullah, A. Effect of nitrogen on the growth and yield of carrot (Daucus carota L.). The Agriculturists. 11(1), 76-81, 2013.
 
[19]  FAO. Physical properties of the soils in Botswana. www.fao.org/docrep/field/009/ar781e/ar781e. Ministry of Agriculture, Gaborone, Botswana. 1991.
 
[20]  Accu Weather, 2018. Weather forecast, Francistown, Botswana. www.accuweather.com (Accessed 11/12/18).
 
[21]  Wang, G.L., Xiong, F., Que, F., Xu, Z.S., Wang, F. and Xiong, A.S. Morphological characteristics, anatomical structure, and gene expression: Novel insights into gibberellin biosynthesis and perception during carrot growth and development. Horticulture Research. 2, 1-10, 2015b.
 
[22]  Wang, G.L., Sun, S., Xing, G.M., Wu, X.J., Wang, F. and Xiong, A.S. Morphological characteristics, anatomical structure, and gene expression: Novel insights into cytokinin accumulation during carrot growth and development. PLoS One. 10(7), 1-16, 2015a.
 
[23]  Phan, C.T. and Hsu, H. Physical and chemical changes occurring in the carrot root during growth. Canadian Journal of Plant Science. 53, 629-634, 1973.
 
[24]  Ahmad, T., Amjad, M., Iqbal, Q., Nawaz, A. and Iqbal, Z. Integrated nutrient management practices improve growth and yield of carrot. Bulgarian Journal of Agricultural Science. 20(6), 1457-1465, 2014.
 
[25]  Kabir, A., Ali, A., Waliullah, M.H., Rahamn, M.M.M. and Rashid, A. Effect of spacing and sowing time on growth and yield of carrot (Daucus carota L.). International Journal of Sustainable Agriculture. 5(1), 29-36, 2013.
 
[26]  Dawuda, M.M., Boateng, P.Y., Hemeng, O.B. and Nyarko, G. Growth and yield response of carrot (Daucus carota L.) to different rates of soil amendments and spacing. Journal of Science and Technology. 31(2), 11-20, 2011.
 
[27]  Shoma, J.F., Islam, M.S., Rahman, M.S., Ali, L., Islam, M.R. and Rahman, M.H. Performance of carrot (Daucus carota L.) genotypes under different sowing dates. Eco-friendly Agriculture Journal. 7(11), 148-150, 2014.
 
[28]  Liptay, A. and Muehmer, J.K. Evaluation of baby carrot cultivars and their growth patterns in southwestern Ontario. Canadian Journal of Plant Science. 60, 911-915, 1980.
 
[29]  Botswana Bureau of Standards. Carrot – grading requirements. BOS 430:2012, Pp 3-4, 2012.
 
[30]  Suojala, T. Growth of and partitioning between shoot and storage root of carrot in a northern climate. Agricultural and Food Science in Finland. 9, 49-59, 2000.
 
[31]  Sanderson, K.R. and Mackinnon, S.D. Evaluation of carrot cultivars for cut and peel processing in Prince Edward Island, Canada, 1997-98. HortTechnology. 11(4), 657-660, 2001.
 
[32]  Berry, N.A., Wratten, S.D. and Frampton, C. Effects of sowing and harvest dates on carrot rust fly (psila rosae) damage to carrots in Canterbury, New Zealand. New Zealand Journal of Crop and Horticultural Science. 25(2), 109-115, 1997.
 
[33]  Reid, J.B. and English, J.M. Potential yield in carrots (Daucus carota L.): Theory, test, and an application. Annals of Botany. 85, 593-605, 2000.
 
[34]  Bosekeng, G. and Coetzer, G.M. Response of onion (Allium cepa L.) to sowing dates. African Journal of Agricultural Research. 8(22), 2757-2764, 2013.
 
[35]  Gajewski, M., Węglarz, Z., Sereda, A., Bajer, M., Kuczkowska, A. and Majewski, M. Carotenoid accumulation by carrot storage roots in relation to nitrogen fertilization level. Notulae Botanicae Horti Agrobotanici Cluj-Napoca. 38(1), 71-75, 2010.