Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2012
Volume 15
Issue 4
Topic:
Agronomy
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Yousefi M. , Zandi P. 2012. Effect of foliar application of zinc and manganese on yield of pumpkin (Cucurbita pepo L.) under two irrigation patterns, EJPAU 15(4), #02.
Available Online: http://www.ejpau.media.pl/volume15/issue4/abs-02.html

EFFECT OF FOLIAR APPLICATION OF ZINC AND MANGANESE ON YIELD OF PUMPKIN (CUCURBITA PEPO L.) UNDER TWO IRRIGATION PATTERNS

Mohsen Yousefi , Peiman Zandi
Department of Agronomy, Takestan Branch, Islamic Azad University, Takestan

 

ABSTRACT

The study was carried out to determine the response of pumpkin (cucurbita pepo L.) to zinc and manganese fertilizers at Agricultural Research Farm of Qazvin, Iran during 2011. The experimental design was a split-plot based on randomized complete blocks with four replications. Irrigation regimes (I1 – irrigation after 50 mm and I2 – Irrigation after 100 mm cumulative evaporation from class A pan) allotted to the main plots affected the pre-flowering stage. Subplots, which consisted of split plots, comprised of four foliar application levels (no spray application as control, Zn as ZnSo4, Mn as MnSo4 and Zn+Mn) of micronutrients at flowering stage. Seed number, seed yield, fruit yield and oil content of pumpkin showed significant response to foliar spray (P<0.01) and irrigation regimes (P<0.05).The highest seed yield (797 kg·ha-1) was obtained from foliar spray of Zn+Mn followed by irrigation patterns ofá I2. Irrigation according to 50 mm evaporation, regardless of foliar application, resulted in maximum fruit yield. Clearly, reducing the irrigation interval led to increased fruit yield. Hence, foliar spray of Zn+Mn coupled with higher irrigation intervals (I2) should be practised to obtain maximum seed number and seed yield from pumpkin in semi-arid region of Qazvin.

Key words: Cucurbita pepo, foliar application, regulated irrigation, seed yield .


Mohsen Yousefi
Department of Agronomy, Takestan Branch, Islamic Azad University, Takestan
Iran
phone: +98 9196583496

Peiman Zandi
Department of Agronomy, Takestan Branch, Islamic Azad University, Takestan
P.O. Box: 34819-49479, Iran
phone: +98 9375836734, fax: +98 1327562193
email: z_rice_b@yahoo.com

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.