Assessing the Physical and Chemical Properties of Fruit and Vegetable Waste for Use in Anaerobic Digestion

2008 ◽  
Author(s):  
Gary L Hawkins ◽  
Glen Rains
Keyword(s):  
Anaerobic Digestion ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Vegetable Waste ◽  
Fruit And Vegetable ◽  
Physical And Chemical ◽  
And Chemical Properties

scholarly journals Efecto de la aplicación de bioabono en el rendimiento de cultivos de Vigna

2016 ◽  
Vol 2 ◽  
pp. 75
Author(s):  
Nelson Roberto Flores Blandón
Keyword(s):  
Anaerobic Digestion ◽  
Chemical Properties ◽  
Inorganic Fertilizer ◽  
Physical And Chemical Properties ◽  
Fresh Weight ◽  
Good Source ◽  
National School ◽  
Second Year ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic materials as a soil amendment may be chellply prod used in farmer' s fields via anaerobic digestion of beef manure. From the anaerobic digestion, one obtains gas and manure, the latter having excellent physical and chemical properties which makes it a good source of organic matter. The objectives of this work were to evaluate the effects of beef manure applications on Vigna (Vigna unguiculata) yields Experiments were conducted for two years at the National School of Agriculture, El Salvador, 460 meters aoove sea level, 1800 mm annual precipitation,and a mean temperature of 23.8°C. The soil in this study was an alluvial saody loam Regosol.A total of five treatments were evaluated that included three rates of applied beef manure (40,80, 120 m3/ha), an inorganic fertilizer check (0.39 aud 0.20 kg/20 m2 of ammonium sulfate and urea respectively) and an absolute check (no N applied). The beef manure was applied to the soil eightdays before planting. The urea fraction of the inorganic fertilizer check was banded 8 days after planting. Fresh weight yields were statistically similar between manure and the inorganic fertilizer check in the tirst year, however, a slight tendency for higher yields was observed for the second year. This suggests that applications of manure can improve Vigna fresh weight yields over time.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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