Root distribution is treated as a static component in most current dynamic vegetation models (DVMs). While changes in leaf and stem biomass are reflected in leaf area index (LAI) and vegetation height via specific leaf area (SLA) and allometric relationships, most DVMs assume that changes in root biomass do not result in changes in the root distribution profile and rooting depth. That is, the f...

this research was undertaken to determine the comparative phenology of swallow wort (cynanchum acutum) in pistachio orchards and investigate the possibilities of its integrated management as a randomized complete block design with 18 treatments and three replications during 2007. the treatments consisted using paraquat, glyphosate, triclopyr and removine the weed. the results indicated that swa...

The application of zeolite to soils increases cation exchange capacity, and as increases nutrient retention capacity. Imbalanced nutrient management is one of the reasons responsible for low yield of potato in Iran. This study was carried out in research field of Islamic Azad University; Arak Branch at central of Iran to evaluate effect of zeolite particles and phosphorus fertilizer on agro-phy...

In resource-poor environments, adjustment in plant biomass allocation implies a complex interplay between environmental signals and plant development rather than a delay in plant development alone. To understand how environmental factors influence biomass allocation or the developing phenotype, it is necessary to distinguish the biomass allocations resulting from environmental gradients or onto...

Background and purpose: dye is widely used in industries such as cosmetic, leather, paper and textile and release to the environment via their effluents. The purpose of this study was to compare the efficiency of low-cost adsorbents in acid orang 7 dyes removal from water. Materials and Methods: The Rice Stem biomass was sun dried, crushed and sieved to particle sizes in range of 1-2 mm. Then ...

Pineapple residue and banana pseudo-stem are waste from agricultural production in tropical zones, the characteristics of their pyrolysis should be explored for high-value utilization. Kinetics, thermodynamics, reaction mechanism valorization bio-char during these feedstock were conducted this study. In biomass mainly decomposed at 150–500 °C, there was a significant mass loss peak 650 °C. The ...

Panicum maximum cv. Mombasa is a type of grass that known resistant to shade and responsive fertilization. This study aimed determine the morphology production on various levels shading organic fertilizer. The soil used in this was brown latosol. completely randomized design (CRD) with factorial pattern consisting three (0%, 36%, 72%) two dose factors fertilizer (0 g/pot 500 g/pot). parameters ...

To explore replacement control of the invasive weed Ipomoea cairica, we studied the competitive effects of two valuable natives, Pueraria lobata and Paederia scandens, on growth and photosynthetic characteristics of I. cairica, in pot and field experiments. When I. cairica was planted in pots with P. lobata or P. scandens, its total biomass decreased by 68.7% and 45.8%, and its stem length by 3...

Drought is worldwide considered one of the most limiting factors of Theobroma cacao production, which can be intensified by global climate changes. In this study, we aimed to investigate the phenotypic correlation among morphological characteristics of cacao progenies submitted to irrigation and drought conditions and their partitions into direct and indirect effects. Path analysis with phenoty...