Effects of nitrogen treatment and intra-row spacing on the morphological and physiological characteristics in pumpkin (Cucurbita pepo L.)

Authors

  • Nastran HAMIDI Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
  • Hamid MOHAMMADI Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
  • Lamia VOJOUDI Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
  • Amirreza SADEGHI Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran

DOI:

https://doi.org/10.14720/aas.2016.107.1.07

Keywords:

Cucurbita pepo L., nitrogen, intra-row spacing, yield, oil content

Abstract

Pumpkin (Cucurbita pepo L.) is a medicinal plant recently under common cultivation in Iran. The seeds and its products are used in the treatment of some diseases. Due to the lack of information about the intra-row spacing and nutritional demands of the plant a factorial experiment with Randomized Complete Block Design with three replications was planned in Azarbaijan Shahid Madani University Research Field in 2013. The treatments were 5 levels of Urea fertilizer (0, 50, 100, 150, 200 kg/ha nitrogen), and intra-row spacing in 3 levels (30, 60 and 90 cm). The result showed that interaction effects of intra-row spacing and nitrogen treatment had significant effect on some morphological traits such as plant height, number of auxiliary branches and leaf number per plant. Application of 200 kg/ha nitrogen increased the plant height, the number for auxiliary branches and leaves as well as the leaves dry mass, mainly due to the prolonged vegetative growth period and delayed flowering and fruiting. 150 kg/ha nitrogen combined with 60 cm intra-row spacing hold the highest number of female flowers, fruit number and intact fruit number and fruit fresh weight, and the highest dry weight of the intact seeds. The results for some physiological traits showed that interaction effects of nitrogen and intra-row spacing had significant effects on chlorophyll b at the late stages of flowering period and the contents for chlorophyll a and carotenoids were significant at the end of growing season. The highest oil content was recorded in 150 kg/ha nitrogen and 60 cm intra-row spacing. Based on results obtained, 150 kg/ha nitrogen and 60 cm intra-row spacing were the best regime for the production of this plant.

References

Abdi A., Shirani rad A.H., Seyfzadeh S., Yousefi M. 2012. Effect of plant density and nitrogen rates on agronomic traits of Cucurbita pepo L. different sowing dates. International Journal of

Agriculture and Crop Science, 4(24): 1837-1839.

American Oil Chemists’ Society. 1983. Official and Tentative Methods of the American Oil Chemists’ Society. AOCS: Champaign, IL, p. 52.

Ebadi M., Gholipoori A., Nikkhah Bahrami R. 2008. The effect of pruning and distance between plants on yield and yield components of pumpkin (Cucurbita pepo L). Pajouhesh and Sazandegi, 21(1): 41-47. (In Persian with English Summary).

Edelstein M., Nerson H., Nadler K., Burger Y. 1989. Effects of population density on the yield of bush and vine spaghetti squash. Hassadeh, 70(3): 398-400.

Gholipoori A., Javanshir A., Rahim zadehKhoie F., Mohammadi A., Biat H. 2007. The effect of different nitrogen level and pruning of head on yield and yield component of medicinal pumpkin (Cucurbita pepo L.). Journal of Agricultural Sciences Natural Resources, 13(2): 32-41.

Gross J. 1991. Pigments in vegetables. New York, Van Nostrand Reinhold. Doi: 10.1007/978-1-4615-2033-7

Hafideh F.T. 2002. Effect of foliage density and plant spacing on the number of flowers produced, sex expression, and early and total fruit weight squash (Cucurbita pepo L. cv. Lita hybrid). Dirasat, Agricultural Science, 28: 178-183.

Horvath S., Bedo Z. 1988. Another possibility in treatment of hyperlipidaemin with peponen of natural an active substance. Mediflora, (special issue) 89: 7-8.

Khajehpoor M.R. 2010. Principles of Agriculture (second edition). Iran, Esfahan Technology of Publications Jahad University.

Khasmakhi-Sabet A., SedaghathoorSh J., Mohammady J., Olfati A. 2009. Effect of plant density on Bell pepper yield and quality. International Journal of Vegetable Science, 15(3): 264-271. Doi: 10.1080/19315260902830793

Law-Ogbomo K., Egharevba E. 2009. Effects of planting density and NPK fertilizer application on yield and yield components of tomato (Lycopersicum esculentum Mill) in forest Location. World Journal of Agriculture Science, 5(2): 152-15.

Lichtenthaler H.K., Wellburn A.R. 1983. Determination of total carotenoids and Chlorophylls a and b of leaf extracts in different solvents. Biochemical Society Transactions, 603: 591-592. Doi: 10.1042/bst0110591

Lower R.L., Smith O.S., Ghaderi A. 1983. Effects of plant density, arrangement and genotype on stability of sex expression in cucumber. HortScience, 18: 737-738.

Marcelis L.F.M. 1992. The dynamics of growth and matter distribution in cucumber. Annals of Botany, 69: 487-492.

Moazzen S.H., Daneshian J., Valadabad S.A., Baghdadi H. 2006. Study of plant population and phosphate fertilization on some agronomic characters and seed and fruit yield of pumpkin (cucurbita pepo L.). Iranian Journal of Medicinal and Aromatic Plants, 22(4): 397-409. (In Persian with English Summary).

Moradi E., Banayan Avval M., Rezvani Moghadam P., Shabahangh j. 2014. Effects of different amounts of nitrogen and plant density on yield, yield components and seed oil percentage of pumpkin (Cucurbita pepo L.). Agroecolgy Journal, 6(1): 21-30.

Omidbeigi R. 2006. Production and processing of medicinal plants. Iran, Mashhad.

Salisbury F.B., Ross C.W. 1991. Plant physiology, Wada worth publishing Company. Pp. 682.

Sara E., Helena L., Jensen H., Mattsson L. 2002. Yield responses to different plant nutrition management for buttercup squash, Cucurbita maxima. M.Sc. Thesis. Swedish University of Agricultural Sciences.

Stepleton S.C., Wien H.C., Morse R.A. 2000. Flowering and fruit set of pumpkin cultivars under field conditions. HortScience, 35: 1074-1077.

Tiaz L., Zeiger E. 2010. Plant physiology. Sinauer Associates, Inc.; Fifth edition.

Yadeghari A., Barzeghar R. 2001. Effect of Planting distance pumpkin seeds and Spraying of Ethylene on Fruit and seed production of Cucurbita pepo L. Agronomy Journal, 6(4): 1-9.

Younis Y.M.H., Al-Shihry S.S. 2000. African Cucurbita pepo L.: properties of seed and variability in fatty acid composition of seed oil. Phytochemistry, 54: 71:75

Downloads

Published

6. 04. 2016

Issue

Section

Agronomy section

How to Cite

HAMIDI, N., MOHAMMADI, H., VOJOUDI, L., & SADEGHI, A. (2016). Effects of nitrogen treatment and intra-row spacing on the morphological and physiological characteristics in pumpkin (Cucurbita pepo L.). Acta Agriculturae Slovenica, 107(1), 65–71. https://doi.org/10.14720/aas.2016.107.1.07

Similar Articles

1-10 of 635

You may also start an advanced similarity search for this article.