The Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae), causes severe damage to barley, Hordeum vulgare L. (Poales: Poaceae), in the highlands of Ethiopia. Little information is available on the control of this pest in Ethiopia. An experiment aimed at evaluating the resistance of barley varieties from the USA to D. noxia populations and determining biotypic variation betwee...

Induced systemic resistance (ISR) and biofertilizer are two activities in plant protection from pathogens as well an alternative to the use of traditional fertilizers. The purpose study was determine other features 4 bacteria that have ability phosphate solvents produce indole siderophore compounds them inducers indicate their possibility be applied biofertilizers rice plants. This is experimen...

ABSTRACT Mixed models and multivariate analysis are powerful tools for selecting superior genotypes in plant breeding programs. The BLUP (best linear unbiased prediction) method has been used to predict genetic values without environmental effects. Furthermore, the FAI-BLUP (ideotype-design index) procedure is especially valuable because of multiple-trait selection. This study aimed determine p...

This study aimed to determine the effect of a combination cropping systems and number plant seeds on growth yield black rice plants. The research method used simple randomized block design (RBD) model consisting 6 treatment combinations with 4 replication, namely: 1) Combination 25 x tile planting system one seed (J1B1), 2) two (J1B2), 3) 2:1 legowo (J2B1), 4) 5) 4:1 (J3B1), 6) (J3B2). results ...

Perennial, temperate, C4 grasses, such as switchgrass and miscanthus have been tabbed as sources of herbaceous biomass for the production of green fuels and chemicals based on a number of positive agronomic traits. Although there is important literature on the management of these species for biomass production on marginal lands, numerous aspects of their biology are as yet unexplored at the mol...

BACKGROUND AND AIMS Changes in rainfall and temperature brought about through climate change may affect plant species distribution and community composition of grasslands. The primary objective of this study was to test how manipulation of water and temperature would influence the plasticity of stomatal density and leaf area of bluebunch wheatgrass, Pseudoroegneria spicata. It was hypothesized ...

BACKGROUND Switchgrass is one of the most promising bioenergy crop candidates for the US. It gives relatively high biomass yield and can grow on marginal lands. However, its yields vary from year to year and from location to location. Thus it is imperative to develop a low input and sustainable switchgrass feedstock production system. One of the most feasible ways to increase biomass yields is ...

Abstract Choke disease, which is caused by Epichloë typhina , was first reported in orchardgrass seed production fields the Willamette Valley, Oregon 1997 and has continued to persist system. The disease can cause up 30% losses yield. Unlike many species that are transmitted, it unclear how infection of E. occurs field, or spreads within plants. In this study, overall incidence choke on trap pl...

Wheat (Triticumaestivum L.) is a primary staple food crop that supports more than third of the world's population and Asia's main food. Abiotic stressors have an impact on wheat production all over world. A hydroponic research was carried out to investigate effects various salinity levels. i.e 1.5, 5, 10 15 ds/m different cultivars (Aas-11, Gold-16, Johar-16, 1711, 1712, 1713, 1718, 1725, 1754 ...