نتایج جستجو برای: intercropping indices

تعداد نتایج: 85259  

Journal: :تولید گیاهان زراعی 0
علی نخ زری مقدم عضو هیات علمی/ دانشگاه گنبد کاووس علی راحمی کاریزکی عضو هیات علمی دانشگاه گنبد کاووس

background and objectivesintercropping or simultaneous growing of two or more crops on the same piece of land has the potential of enhanced ecosystem productivity. in a cereal-legume intercropping system, an increase in cereal and a decrease in legume intercrop yield is reported. several indices such as land equivalent ratio (ler), relative crowding coefficient (k), competitive ratio (cr), aggr...

2016
H. A. Hamad

This experiment was conducted for two consecutive seasons of 2013/2014 and 2014/2015 at the Experimental Farm, Faculty of Agriculture, Zagazig University, Egypt, to evaluated the effect of different intercropping patterns (safflower: fenugreek at different row ratios; 1:1, 1:2 and 1:3 in comparison with sole cropped of each specie), different foliar fertilization levels (0, 2 and 4 g/l) and the...

Journal: :IJISSC 2010
Heike Knörzer Simone Graeff-Hönninger Bettina U. Müller Hans-Peter Piepho Wilhelm Claupein

Interspecific competition between species influences their individual growth and performance. Neighborhood effects become especially important in intercropping systems, and modeling approaches could be a useful tool to simulate plant growth under different environmental conditions to help identify appropriate combinations of different crops while managing competition. This study gives an overvi...

2017
Xin Liu Tanzeelur Rahman Feng Yang Chun Song Taiwen Yong Jiang Liu Cuiying Zhang Wenyu Yang

The crop intercepted photosynthetically active radiation (PAR) and radiation use efficiency (RUE) vary markedly in different intercropping systems. The HHLA (horizontally homogeneous leaf area) and ERCRT (extended row crop radiation transmission) models have been established to calculate the intercepted PAR for intercrops. However, there is still a lack of study on the intercepted PAR and RUE u...

A. Javanmard A. Ostadi A. Seifi M. Amani Machiani S. Khodayari

Intercropping is a sustainable practice to achieve higher production with the aim to limit external inputs. A field experiment was conducted at the research farm of the Faculty of Agriculture, University of Maragheh, Maragheh, Iran, during 2016 growing seasons with ten treatments to evaluate the yield, analyze the competition and insect’s assemblages in sunflower (as main plant)/soybean (as com...

Safar Nasrollahzadeh Sajjad Shaker-Koohi,

Intercropping is considered for increasing and stability of yield per unit. In order to study the effects of different intercropping arrangements on sorghum and mungbean yield and to find the land use advantage in the intercropping system, an experiment was carried out based on a randomized complete block design with seven treatments and three replications at the Research Farm, Faculty of Agric...

2013
M. Rezvani F. Zaefarian M. Aghaalikhani H. Rahimian Mashhadi

The spatial variation in plant species associated with intercropping is intended to reduce resource competition between species and increase yield potential. A field experiment was carried out on corn (Zea mays L.) and soybean (Glycine max L.) intercropping in a replacement series experiment with weed contamination consist of: weed free, infestation of redroot pigweed, infestation of jimsonweed...

2008
MIN ZHANG XIAN-HUI FU WEN-TING FENG XIAOMING ZOU

Abstract: Rubber tree (Hevea brasiliensis) plantation is a major land use practiced in Xishuangbanna of south-western China. Effects of rubber plantation (RP) and tea-rubber intercropping (TRI) systems on soil organic carbon pools were evaluated by recording changes in soil organic carbon in an age sequence of 12-, 20-, 26-, and 40-year old plantations. Labile organic carbon (LOC) increased in ...

2016
Wei-long Ding Li-feng Xu Yang Liu

In intercropping distance research, traditional field experiments are time-consuming and tedious, and cannot be applied to quantitative interspecific distance quickly. Therefore it has become a big concern for researchers in this field to further reduce manual operation, and more automatically and quickly get the optimal planting distance. In this paper, an optimization algorithm was applied to...

Journal: :پژوهش های زراعی ایران 0
لیلا منصوری خلیل جمشیدی مهدی راستگو جلال صبا حامد منصوری

increasing diversity and apply intercropping systems is one of approaches to control of weeds. to evaluate the effects of additive maize-bean intercropping on yield, yield components and weeds in zanjan conditions, a field study was conducted in a spilt plot with randomized complete block design in three replications at research farm of zanjan university in 2010. main plots were the different p...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید