abstract plant roots absorb water and minerals from soil solution. plant production is a function of root distribution and its activity in soil. by increasing root density in soil unit volume, roots absorb more water and minerals. this implies that knowledge of root development is an important factor for crop production. to determine the most suitable amount of water for the maximum development...

Punctodera chalcoensis Stone et al. is a cyst nematode parasitizing corn (Zea mays L.) and teosinte (Zea mexicana (Schrad.) Kuntz) in Mexico (7). This nematode damages corn severely in Tlaxcala and Puebla states of Mexico (7). Pathogenic studies of P. chalcoensis on corn have been conducted in the greenhouse (2). Mundo-Ocampo and Baldwin (6) reported that P. chalcoensis induces a syncytium in r...

In this research, several chemical extractants and modified Olsen methods were studied in 25 surface-calcareous soils (0-30 cm) for determining available phosphorus (P) for corn (Zea mays L.) plant. In this experiment, the highest correlation was obtained between extracted P by Olsen and Colwell methods (NaHCO3-extractable P) and dry weight of corn shoot (r =0.67 and 0.75, p

in this research, several chemical extractants and modified olsen methods were studied in 25 surface-calcareous soils (0-30 cm) for determining available phosphorus (p) for corn (zea mays l.) plant. in this experiment, the highest correlation was obtained between extracted p by olsen and colwell methods (nahco3-extractable p) and dry weight of corn shoot (r =0.67 and 0.75, p

single and joint toxicity of chloramphenicol and hg acting on wheat (triticum aestivum l.), chinese cabbage (brassica campestris l.) and corn (zea mays l.) were investigated. the results showed positive correlations between root elongation inhibition of three plants and concentrations of pollutants added to soil (p

single and joint toxicity of chloramphenicol and hg acting on wheat (triticum aestivum l.), chinese cabbage (brassica campestris l.) and corn (zea mays l.) were investigated. the results showed positive correlations between root elongation inhibition of three plants and concentrations of pollutants added to soil (p

Corn (Zea mays L.) growth, nutrient uptake and soil fertility improvement of strongly acidic applied with biochar animal manureReuben James Cillo Rollon, Penny Lane Bitoy Malig-on, Perlene Renegado Guindang, Ronald Villamor Dolorito

Similar Cry proteins are expressed in both Bt corn, Zea mays L., and cotton, Gossypium hirsutum (L.), commercial production systems. At least one generation of corn earworm, Helicoverpa zea (Boddie), completes development on field corn in the Mid-South before dispersing across the landscape into other crop hosts like cotton. A concern is that Bt corn hybrids may result in selection for H. zea p...

Biologically-based spray treatments, including nucleopolyhedroviruses, neem, and spinosad, were evaluated as supplemental controls for the fall armyworm, Spodoptera frugiperda (J. E. Smith), and corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), on transgenic sweet corn, Zea mays (L.) (Poales: Poaceae), expressing a Cry1Ab toxin from Bacillus thuringiensis Berliner (Bacillales: Ba...

Introduction In 2007 the Energy Independence and Security Act (EISA) established that by 2022, 36 billion gallons of biofuel are to come from renewable fuel sources. More specifically, the mandate requires the production of cellulosic biofuels to increase to 16 billion gallons ethanol equivalent annually by 2022 (Energy Independence and Security Act, 2007). Cellulosic biofuels are derived from ...