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Abstract
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Article Information:
Investigating the Effect of Phosphorus, Potassium and Weed Management on Forage and Seed Yield of Alfalfa Ecotypes (Medicago sativa L.)
Ali Reza Heidarian, Ali Reza Beheshti and Farzad Mokhberdoran
Corresponding Author: Alireza Heidarian
Submitted: February 10, 2012
Accepted: March 24, 2012
Published: October 01, 2012 |
Abstract:
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In order to investigate fertilizing and weed management effects on forage and seed yield of alfalfa
ecotypes, a field trial was conducted during 2008-2009 growing season at Khorasan Agricultural and Natural
Resource Research Center, Mashhad-Iran. Alfalfa ecotypes including (Ghareghozlo, Hoakmabad, Malekkandi,
Kozre, Faminin, Galebani, Rahnani, Shorkat, Chaleshtar, Ghareaghaj, Gharoghlogh, Ordobad, Sedighan,
Silvana, Sahandava, Ghahavand, Mohajerankaraj and Mashhad) were allocated to main plots; sub plots
consisted of two levels of none fertilizing and fertilization treatments using simultaneous application of
potassium sulphate and phosphate triple at rates of 150 and 350 K/ha, respectively and sub-sub plots were
allocated to weeding and none weeding treatments based on a complete randomized block design in a splitsplit-
plot scheme with three replicates. Results showed that the effect of ecotype on forage yield was not
significant. Gharoghlogh and Silvana produced the highest (18270 kg/ha) and the lowest (14630 kg/ha) green
forage yield, respectively at both cuttings (first and second cuts). The interaction of fertilization and weeding
on forage yield was significant (p<0.01). On the other hand, with application of fertilizer, forage yield 11.74%
was increased and it was enhanced 26.93% by manual weeding. Furthermore, results revealed that
ecotype fertilizer interaction was significant (p<0.05) for weed dry weight. Ecotype weeding interaction was
significant (p<0.05) for number of seed per pod and seed weight (p<0.01). In addition, fertilizer weeding
interaction was significant (p<0.05) for number of seed per plant. Among the treatments, highest number of
seed per plant was produced by fertilizer and weeding treatment (2734) and the lowest one was obtained by
non-fertilizer and non-weeding treatment (559.5).
Key words: Alfalfa, fertilization, manual weeding, weed competition, yield, ,
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Cite this Reference:
Ali Reza Heidarian, Ali Reza Beheshti and Farzad Mokhberdoran, . Investigating the Effect of Phosphorus, Potassium and Weed Management on Forage and Seed Yield of Alfalfa Ecotypes (Medicago sativa L.) . Research Journal of Applied Sciences, Engineering and Technology, (19): 3628-3636.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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