نتایج جستجو برای: full irrigation

تعداد نتایج: 337850  

2016
John S. Olmsted

Full Text PDF Images References Journal of Endodontics Volume 38, Issue 1 , Pages 37-40, January 2012 Irrigation Trends among American Association of Endodontists Members: A Web-based Survey Joseph Dutner, DMD , Pete Mines, DDS, Alfred Anderson, DDS Rohde Dental Clinic, US Army Fort Bragg DENTAC, Fort Bragg, North Carolina published online 22 September 2011. Abstract Introduction The purpose of...

Journal: :علوم گیاهان زراعی ایران 0
مجید پوریوسف استادیار گروه زراعت و اصلاح نباتات دانشگاه زنجان، پژوهشکدۀ فیزیولوژی و بیوتکنولوژی دانشگاه زنجان سید علی رزاقی فرد دانشجوی کارشناسی ارشد، گروه زراعت و اصلاح نباتات دانشگاه زنجان خلیل جمشیدی دانشیار گروه زراعت و اصلاح نباتات دانشگاه زنجان

in order to investigate the effect of irrigation intervals and harvesting time on yield and yield components of anise (pimpinella anisum l.) a field experiment was conducted at the agricultural research station, university of zanjan in 2010. for this purpose a spilt-plot experiment based on complete randomized block design with three replications was used. three irrigation intervals (every 7, 1...

Journal: :Journal of environmental biology 2010
P Kostopoulou M S Vrahnakis T Merou M Lazaridou

The hydrodynamic behavior of two annual legumes (Trifolium angustifolium L. and Onobrychis caput-galli (L.) Lam.) under water shortage was studied in a rain shelter experiment. Seeds were collected from natural grasslands of northern Greece and were sown in pots. Two months after seedlings' emergence, full irrigation (up to field capacity) and limited irrigation (40% of field capacity) were app...

Journal: :علوم گیاهان زراعی ایران 0
امید یونسی فرزاد شریف زاده علی احمدی

although water deficiency has been seriously taken up as a subject in reducing crop production in arid and semi–arid areas, nevertheless little information has been published regarding its effects on seed quality. to evaluate the effects of irrigation regimes (full irrigation (control), irrigation until flowering stage, irrigation until doughing stage and irrigation until eight-leaf stage) on g...

2001
J.-E. BERGEZ

Irrigation scheduling is an important decision problem in agriculture. The purpose of the study presented in this paper is to compare dynamic programming (DP) and reinforcement learning (RL) methods for identifying optimal starting irrigation strategies, when a limited amount of water is available for irrigation. Both of the optimization methods use the MODERATO simulator, which includes a grow...

ژورنال: علوم آب و خاک 2020

Today, one of the biggest challenges facing the world is the lack of water, especially in the agricultural sector. In this research, we investigated the effects of irrigation method and deficit irrigation with the urban refined effluent on biomass, grain yield, yield components and water use efficiency in single grain crosses 704 maize. This research was carried out in a randomized complete blo...

Journal: :آب و خاک 0
علیرضا کیانی افشین مساوات

introduction: lack of water and deterioration in the quality of soil and water resources are considered to be the prime cause of reduced crop yield in arid and semi-arid regions ‘more crop per drop’ by trickle irrigation, deficit irrigation, and uncommon water are the best strategies for mitigating water crises. different irrigation management strategies are needed to increase production in dif...

N. Patel T.B.S. Rajput

Indiahas the largest area under onion (Allium cepa) crop but its average productivity (14.21 t ha-1) is considerably lower than the world’s average of 19.4 t ha-1. Besides low productivity, irrigation efficiencies are also very low i.e. 30-35% in India. Managing onion crop with less than adequate irrigation water availability is a challenge in several parts of the country. Options of i) deficit...

 Irrigation is an inevitable part of agriculture which determines crop yield and thus food security. In modern era of agriculture, crop yield is determined on the basis of crop production per unit of water-use instead of crop production per land unit area. Deficit irrigation is introduced as a strategy for controlling water resources that leads to water resource preservation. Date palm requires...

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