Comparing tests for soil fertility. II. The hydrogen peroxide/sulfuric acid treatment as an alternative to the copper/selenium catalyzed digestion process for routine determination of soil nitrogen‐kjeldahl

Buondonno, A.; Rashad, A. A.; Coppola, E.

doi:10.1080/00103629509369394

Cited by 69 publications

(50 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Total N was determined from a wet acid digest (Buondonno et al, 1995) by colorimetric analysis (Anderson and Ingram, 1993). Exchangeable Ca, Mg, and K were extracted using the Melhlich-3 method (Melhlich, 1984) and determined by atomic absorption spectrophotometry.…”

Section: Methodsmentioning

confidence: 99%

The effects of green manure and NPK fertilizer on the growth and yield of maize (Zea mays L) in the mount Cameroon region

Egbe¹,

Fonge²

2012

ABJNA

View full text Add to dashboard Cite

This study was carried out in the Mount Cameroon region to evaluate the effects of green manure and fertilizer on the growth and yield of maize. There were eight treatments: Calliandra prunings, Calliandra prunings + fertilizer (60kg/ha NPK), Gliricidia prunings, Gliricidia prunings + fertilizer, Senna prunings, Senna prunings + fertilizer, fertilizer only (120 kg/ha NPK) and control. Results showed that biomass of prunings in the first pruning was highest in Calliandra (5314kg/ha) and this was significantly different from those of Senna (2909kg/ha) and Gliricidia (2112kg/ha). Nitrogen input from the prunings was highly significant (P<0.05) in Calliandra prunings (217 kgN/ha) and least in Gliricidia species (69.0kgN/ha). Maize grain yield in the different treatments was not significantly different in the first and second planting seasons. The highest grain yield during the third cropping season was observed in Calliandra + fertilizer (4696kg/ha) and least in control (3332kg/ha). It was also noted that nitrogen uptake was highest in plots supplied with fertilizer only and lowest in control. Weed biomass was highest in control and in plots supplied with fertilizer only. Soil chemical changes after three cropping periods showed variable changes in treatments. There was decrease in bulk density in plots supplied with Calliandra prunings.

show abstract

Section: Methodsmentioning

confidence: 99%

The effects of green manure and NPK fertilizer on the growth and yield of maize (Zea mays L) in the mount Cameroon region

Egbe¹,

Fonge²

2012

ABJNA

View full text Add to dashboard Cite

show abstract

“…C) was determined by chromic acid digestion and spectrophotometric analysis as described by Heanes [34]. Total nitrogen (TN) was determined from a wet acid digest [35] and analyzed by colorimetric analysis [36]. Exchangeable cations (Ca, Mg, K and Na), as well as available micronutrients (Cu, Zn, Mn, Fe) and available phosphorus (AvP), were extracted using the Mehlich-3 procedure [37], whereby the contents in the extracts were determined by flame photometry and atomic absorption spectrophotometry (AAS).…”

Section: Soil Sampling and Analysismentioning

confidence: 99%

Effect of Chicken Manure Application on Cassava Biomass and Root Yields in Two Agro-Ecologies of Zambia

et al. 2018

View full text Add to dashboard Cite

Abstract:Fertilizer application is known to increase crop yields and mitigate net soil nutrient mining due to continuous removal. However, smallholder farmers rarely apply adequate fertilizers because of high cost, limited availability and lack of awareness. An experiment was conducted to evaluate the effect of chicken manure on cassava root and biomass yield at Kabangwe and Mansa, two locations representing agroecological zones II and III, respectively, in Zambia. With the aim of exploring alternative soil fertility management for smallholder farmers, the effect of sole chicken manure and mineral fertilizers was evaluated on cassava. The treatments were four levels of chicken manure (0, 1.4, 2.8, 4.2 ton/ha) and a single level of mineral NPK applied at 100N-22P-83K kg/ha as recommended. The design was a Randomized Complete Block (RCBD), with three replications using the improved cassava variety "Mweru" during the 2015/2016 growing season. The results showed significant (p < 0.05) treatment effects on cassava root yields and yield components (fresh and dry root, leaf, stem, and total biomass) at both sites. The highest mean fresh (27.66 ton/ha) and dry root yield (9.55 ton/ha), and total fresh biomass (53.68 ton/ha) and dry biomass (16.12 ton/ha) production were achieved with the application of 4.2 ton/ha of chicken manure. This treatment showed 71% and 81% fresh root yield advantage over the control at Mansa and Kabangwe, respectively. While the marginal rate of return (MRR) was negative for the mineral fertilizer, it was positive for all the chicken manure treatments with the maximum (315%) achieved from the application of 4.2 ton/ha. The study concludes that application of chicken manure significantly increases the yield and biomass production of cassava and is economically efficient.

show abstract

“…Organic carbon was determined using improved Heanes digestion and spectro-photometric procedure (Heanes, 1984). Total nitrogen was determined from a wet acid digest (Buondonno et al, 1995) by colorimetric analysis (Anderson & Ingram, 1993). The chemical properties of the bush and forest soils are summarized in Table 1.…”

Section: Experimental Sitesmentioning

confidence: 99%

Nematodes and Weeds Control Effects of Pueraria phaseoloides and Flemingia macrophylla Fallows on Establishment, Survival and Yield of Plantain

Banful¹,

Häuser²,

Ofori³

et al. 2009

West African Journal of Applied Ecology

View full text Add to dashboard Cite

The yield of plantain (Musa spp., AAB Simmonds) declines sharply after 1-2 years of cropping in West and Central Africa, due mainly to weeds and nematodes. A trial was carried out from January 2002 to October 2005 under two landuse systems (LUS) comprising 4-5 year-old bush fallow, dominated by Chromolaena odorata (L.) R. M. King & H. Rob, and a 20 year-old secondary forest, in three villages in southern Cameroon, to assess the effectiveness of Pueraria phaseoloides and Flemingia macrophylla as planted fallows for weed suppression and reduction in nematode damage of the plantain root system, and determine the yield response of different plantain sucker types to the weed suppression and reduced nematode damage. In each LUS, the treatments were a factorial combination of three levels of fallow system and four levels of plantain sucker type arranged in a randomised complete block design. Total above-ground biomass production of P. phaseoloides was 7.45 Mg ha -1 , 4.2 times higher than F. macrophylla (1.78 Mg ha -1 ; P < 0.05). The high biomass of P. phaseoloides resulted in a significantly greater reduction in total weed biomass compared to F. macrophylla in both wet and dry seasons. Comparing the planted fallows, a sustained reduction in soil nematodes population was only under P. phaseoloides. Plantain establishment and survival rates were of decreasing order: PIF (nursery)-derived "Essong" > Boiling water-treated "Essong" > Untreated "Essong". P. phaseoloides produced significantly (P < 0.05) the highest plantain yield. There were no differences between the natural regrowth and F. macrophylla for all the plantain yield parameters. Sanitizing suckers (boiling and nursery-derived) increased actual yield and quantity of edible bunches by 35% and 26%, respectively, compared to the untreated. It was concluded that P. phaseoloides had the greatest positive effect on the growth and yield of plantain.

show abstract

Comparing tests for soil fertility. II. The hydrogen peroxide/sulfuric acid treatment as an alternative to the copper/selenium catalyzed digestion process for routine determination of soil nitrogen‐kjeldahl

Cited by 69 publications

References 5 publications

The effects of green manure and NPK fertilizer on the growth and yield of maize (Zea mays L) in the mount Cameroon region

The effects of green manure and NPK fertilizer on the growth and yield of maize (Zea mays L) in the mount Cameroon region

Effect of Chicken Manure Application on Cassava Biomass and Root Yields in Two Agro-Ecologies of Zambia

Nematodes and Weeds Control Effects of Pueraria phaseoloides and Flemingia macrophylla Fallows on Establishment, Survival and Yield of Plantain

Contact Info

Product

Resources

About