Effects of different kinds of mulch application on yield and photosynthesis nitrogen and water use efficiency in almond (Prunus amygdalus cv. “Nonpareil”)

Subject Areas : Journal of Plant Ecophysiology

MOHAMMAD SAEED TADAYON ¹ (نویسنده مسئول، استادیار بخش تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران)
gholamreza moafpourian ² (member of scientific board of agricultural and natural resourse research center)

Received: 2015-02-11 Accepted : 2015-07-22 Published : 2016-09-01

Keywords: Organic mulch, Inorganic Pamis mulch, pure profitability,

Abstract :

Abstract: In this experiment the requisiteness of mulch application on increment of yield and photosynthesis nitrogen and water use efficiency of almond were investigated. Experiment was conducted with five treatment in a Randomized Complete Block Design (RCBD) with three replication and four trees per each plot in Dezhcord County in Eghlid region in two years. Experimental treatments consist of - Without mulch (ctrl.) - Inorganic Pamis with 2 cm thickness - Organic almond shredded wood mulch - Glycyrrhiza root waste mulch - Wheat straw mulch, each of them on tree overcast (under tree cover) with 10 cm thickness. The experiment was carried out on 60 uniform fifteen years almond trees. Results showed that the application of different kind of mulch caused an improvement in growth, photosynthesis nitrogen and water use efficiency in almond in rain fed condition. The highest amount of yield belonged to wheat straw mulch. Mulch application caused an increment in stomata conduction, transpiration and photosynthesis water use efficiency. Organic mulch had the best significantly increased the photosynthesis water use efficiency in almond. The highest pure economical profitability belong to wheat straw mulch, almond shredded wood, Glycyrrhiza root waste and inorganic Pamis mulch under tree canopy, respectively.