this study was conducted to determine the chemical composition, metabolizable energy, digestibility and ability of gas production of poa trivialis. samples was collected at three phenological stages including: vegetative growth, flowering and seedling on two different elevations of 1300 to 1500 m and 2000 to 1800 m asl in neor and hir region as the first and second sites, respectively. testing ...

The growth, development and function of plant roots in relation to plant productivity has been very difficult to evaluate, especially in natural field situations. Weaver (1926) and co-workers stated over 50 years ago that "An exact knowledge of the root development of crop plants, of their position, extent and activity as absorbers of water and solutes at various stages of growth is of paramoun...

1980), the BBCH system (Lancashire et al., 1991), and Haun (1973). Zadoks et al. (1974) is an adaptation of The large area of rice (Oryza sativa L.) production worldwide is Feekes’ (1941) scale (with 23 subdivisions) but further critical to the well being of large numbers of the world’s people. Yet delineated. The IRRI (1980) scale is a 10-point system for rice, the most important single plant ...

abstract to evaluate the effects of the irrigation termination in different growth stages on yield and its components of autumn’s canola cultivars in isfahan region. an experiment was conducted in 2005-2006 in kabotar abad research station. a split plot layout within a randomized complete block design with tree replication was used. main plots were seven level of the irrigation cut-off time (d1...

*Correspondence: Muhammad Iqbal, Department of Botany, Faculty of Science, Hamdard University, New Delhi, 110062, India e-mail: [email protected] Impacts of increasing environmental stresses (such as drought) on crop productivity can be sustainably minimized by using plant-beneficial mineral nutrients (such as sulfur, S). This study, based on a pot-culture experiment conducted in greenhouse c...

in order to determine the responses of morphological characteristics, yield and yield components of rapeseed (brassica napus l.) to plant density and weed interference duration, a factorial experiment was conducted using a randomized complete block design with 3 replications at the rice research institute of iran (rrii) in rasht, in the 2008 growing season. the factors comprised plant density a...

in dry region, root systems play a major roll in controlling plant growth and yield due to their importance in absorbtion of water and nutrients. in order to evaluate the morphological characteristics of root chickpea and obtaining proper morphological makers for screening drought resistant genotypes, four experiments were conducted in different phenological stages of growth including, seedling...

Asperula glomerata, the plants belonging to value and range are protein classes in a three stage, active vegetative growth, flowering and seed respectively, is equal to 9/9, 10/1, 9/6. This plant also aspects of soil conservation are also important. In the treatment of diseases such as lowering blood pressure is use to reduce inflammation.   Asperula glomerata in 1389 in two stage, active veg...