Endotherapy is a potential eco-friendly alternative to conventional pesticide application techniques in coconut (Cocos nucifera Linn.) palms. Field trials applying cyproconazole by vegetative endotherapy using two different injection methods, pressurized and nonpressurized, were tested. Stem samples above the point collected 2 45 days after application, fruits up 120 application. Residue analys...

The oxidizing-enzyme preparation employed in previous work was obtained from tea by grinding fresh leaf under acetone until the residue was almost completely free of all colouring constituents of the leaf. Among the differences that exist between the in vitro action of this acetone-prepared tea enzyme and the in vivo reaction in the minced leaf are the rates of oxidation of different polyphenol...

We conducted a 1-year greenhouse experiment to assess the impact of nutrient manipulations on seedling growth, biomass partitioning, and leaf gas exchange between two fast growing Pinus taeda clones that differed in growth efficiency. After 1 year we observed significant treatment and treatment by clone effects on growth, biomass partitioning, and gas exchange parameters. Fertilization increase...

The Wind Erosion Prediction System (WEPS) includes submodels to simulate soil erosion by wind, roughness degradation and residue decomposition. These WEPS submodels were tested using data measured on a 600 m by 415 m farmer’s field, planted with winter wheat, near Burlington, Colorado, USA. Big Spring Number Eight (BSNE) samplers were used to measure wind blown sediment flux and automated devic...

Concerns about energy security and climate change have increased biofuel demand, particularly ethanol produced from cellulosic feedstocks (e.g., food crop residues). A central challenge to cropping for cellulosic ethanol is the potential environmental damage from increased fertilizer use. Previous analyses have assumed that cropping for carbohydrate in residue will require the same amount of fe...

Pot experiments were conducted to study the allelopathic effect of Datura stramonium residue on germination and growth characters purslane (Portulaca oleracea L). Experiments set as completely randomized design with four treatments three replications. Results indicated that concentration affect negatively. The lower level induced a stimulatory plant height, leaf area, shoot root, fresh dry weig...

Use and management of jatropha residue is currently an important global issue for attaining sustainability in biofuel production from Jatropha curcas on wastelands. Perhaps, knowledge about the decomposition characteristics and nutrient release pattern from jatropha residues amended soils are lacking. Thus, the objective of present research was to characterize the carbon (C) and nitrogen (N) mi...

With green sugarcane (interspecific hybrids of Saccharum spp.) harvesting, 6 to 24 Mg ha of postharvest residue is deposited on the field surface covering the sugarcane stubble that must reemerge for several ratoon crops. The objectives of this research were to: (i) determine if postharvest residue possesses allelopathic, autotoxic, and hormetic properties; (ii) determine the interaction of soi...