scholarly journals Impact of integrated application of biochar and nitrogen fertilizers on maize growth and nitrogen recovery in alkaline calcareous soil

2017 ◽  
Vol 63 (5) ◽  
pp. 488-498 ◽  
Author(s):  
Rubab Sarfraz ◽  
Awais Shakoor ◽  
Muhammad Abdullah ◽  
Ammara Arooj ◽  
Azhar Hussain ◽  
...  
Keyword(s):  
Calcareous Soil ◽  
Nitrogen Fertilizers ◽  
Nitrogen Recovery ◽  
Maize Growth

Nitrogen fertilizer responses of pasture grasses in south-eastern Queensland

1963 ◽  
Vol 3 (11) ◽  
pp. 290 ◽  
Author(s):  
EF Henzell
Keyword(s):  
Ammonium Sulphate ◽  
Field Experiments ◽  
Maximum Growth ◽  
Nitrogen Fertilizers ◽  
Nitrogen Recovery ◽  
Residual Effects ◽  
Rhodes Grass ◽  
South Eastern ◽  
Pasture Grasses ◽  
Chloris Gayana

The results are reported of field experiments with nitrogen-fertilized pasture grasses at Samford and D'Aguilar in south-eastern Queensland. The main findings were :- 1. Nitrogen applied as urea or ammonium sulphate increased the annual yield of dry matter under mowing from 1,000- 5,000 lb up to 10,000-20,000 lb an acre, and rates of fertilizer in excess of 400 lb of elemental nitrogen an acre a year were required ,for maximum grass yields during favourable seasons. 2. Ammonium sulphate, applied at rates up to 400 lb N/acre/year, had relatively little effect on the percentage of nitrogen in Rhodes grass (Chloris gayana Kunth.), Paspalum dilatatum Poir., and P. commersonii Lam., cut three times a year. Rates of urea above those required for maximum growth markedly increased the percentage nitrogen content of a Sorghum almum Parodi-blue couch (Digitaria didactyla Willd.) mixture. 3. In an experiment with Rhodes grass, P. dilatatum and P. commersonii, nitrogen recovery rose with increasing rates of ammonium sulphate. At 70 lb N/acre/year the average nitrogen recovery by Rhodes grass was 10 per cent; at 400 lb N/acre/year it was 47 per cent. 4. The residual effects of ammonium sulphate, measured on Rhodes grass during the growing season following two years of fertilization, were very small indeed. 5. Use of nitrogen fertilizers sometimes caused marked changes in the botanical composition of the sward.

Effect of wheat and rice straw biochar produced at different temperatures on maize growth and nutrient dynamics of a calcareous soil

2017 ◽  
Vol 63 (14) ◽  
pp. 2048-2061 ◽  
Author(s):  
Muhammad Asif Naeem ◽  
Muhammad Khalid ◽  
Muhammad Aon ◽  
Ghulam Abbas ◽  
Muhammad Tahir ◽  
...  
Keyword(s):  
Rice Straw ◽  
Calcareous Soil ◽  
Nutrient Dynamics ◽  
Maize Growth ◽  
Different Temperatures ◽  
Rice Straw Biochar

scholarly journals Integration of Mineral Fertilizer and Poultry Manure for Improving Soil Health and Maize Growth under Calcareous Soil Environment

2021 ◽  
Vol 34 (3) ◽  
Author(s):  
Muhammad Fiyyaz ◽  
Ghulam Sarwar ◽  
Noor-Us- Sabah ◽  
Mukkram Ali Tahir ◽  
Muhammad Aftab ◽  
...  
Keyword(s):  
Calcareous Soil ◽  
Soil Health ◽  
Poultry Manure ◽  
Mineral Fertilizer ◽  
Soil Environment ◽  
Maize Growth

Phosphate solubilization and promotion of maize growth by Penicillium oxalicum P4 and Aspergillus niger P85 in a calcareous soil

2015 ◽  
Vol 61 (12) ◽  
pp. 913-923 ◽  
Author(s):  
Zhongwei Yin ◽  
Fachao Shi ◽  
Hongmei Jiang ◽  
Daniel P. Roberts ◽  
Sanfeng Chen ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Organic Acids ◽  
Crop Production ◽  
Calcareous Soil ◽  
Rock Phosphate ◽  
Growth Promotion ◽  
Penicillium Oxalicum ◽  
Fresh Mass ◽  
Available Phosphorus ◽  
Maize Growth

Alternative tactics for improving phosphorus nutrition in crop production are needed in China and elsewhere, as the overapplication of phosphatic fertilizers can adversely impact agricultural sustainability. Penicillium oxalicum P4 and Aspergillus niger P85 were isolated from a calcareous soil in China that had been exposed to excessive application of phosphatic fertilizer for decades. Each isolate excreted a number of organic acids into, acidified, and solubilized phosphorus in a synthetic broth containing insoluble tricalcium phosphate or rock phosphate. Isolate P4, applied as a seed treatment, increased maize fresh mass per plant when rock phosphate was added to the calcareous soil in greenhouse pot studies. Isolate P85 did not increase maize fresh mass per plant but did significantly increase total phosphorus per plant when rock phosphate was added. Significant increases in 7 and 4 organic acids were detected in soil in association with isolates P4 and P85, respectively, relative to the soil-only control. The quantity and (or) number of organic acids produced by these isolates increased when rock phosphate was added to the soil. Both isolates also significantly increased available phosphorus in soil in the presence of added rock phosphate and effectively colonized the maize rhizosphere. Studies reported here indicate that isolate P4 is adapted to and capable of promoting maize growth in a calcareous soil. Plant-growth promotion by this isolate is likely due, at least in part, to increased phosphorus availability resulting from the excretion of organic acids into, and the resulting acidification of, this soil.

A comparison of slow-release and conventional nitrogenous fertilizers for an established pangola grass pasture in a sub-tropical environment

1978 ◽  
Vol 18 (92) ◽  
pp. 415 ◽  
Author(s):  
KF Lowe ◽  
JF Cudmore
Keyword(s):  
Ammonium Nitrate ◽  
Ammonium Sulphate ◽  
Dry Matter ◽  
Slow Release ◽  
Urea Formaldehyde ◽  
Residual Effect ◽  
Nitrogen Fertilizers ◽  
Nitrogen Recovery ◽  
Slow Release Fertilizers ◽  
Grass Growth

Three slow-release nitrogen fertilizers, urea formaldehyde, nitrogen-enriched coal (NEC) and corea (a coal-urea formulation) were compared with conventional nitrogenous fertilizers (urea, ammonium nitrate and ammonium sulphate) in a small-plot cutting experiment. The slow-release fertilizers were applied in one 672 kg N ha-1 dressing to an established Digitaria decumbens (pangola grass) pasture on wallum heath in south-east Queensland. Conventional fertilizers were applied in one, two or four applications in one, two or three years respectively, all treatments receiving a total of 672 kg N ha-1. Dry matter production, nitrogen yield and nitrogen recovery were compared over four summer periods. Over four years, pangola grass produced highest dry matter yields when fertilized with urea formaldehyde, the residual effect disappearing in the fourth summer. Annual yield distribution was equivalent to that from regular applications of conventional fertilizers. NEC released little nitrogen for grass growth in four years while corea had little effect on yield after the first summer. Nitrogen recovery from urea formaldehyde was equivalent to that from ammonium nitrate and urea (applied in four dressings of 168 kg N ha-1). Where 672 kg ha-1 of nitrogen was applied in one dressing, nitrogen recovery was in the order urea formaldehyde >> ammonium nitrate > urea >> ammonium sulphate.

scholarly journals Slow Pyrolyzed Banana Leaf Waste Biochar Amended Calcareous Soil Properties and Maize Growth

2021 ◽  
Vol 14 (21) ◽  
pp. 1791-1805
Author(s):  
Hidayatullah Kakar ◽  
◽  
Mehrunisa Memon ◽  
Inayatullah Rajpar ◽  
Qamaruddin Chachar
Keyword(s):  
Soil Properties ◽  
Calcareous Soil ◽  
Maize Growth ◽  
Banana Leaf

Effect of acid modification of biochar on nutrient availability and maize growth in a calcareous soil

2017 ◽  
Vol 33 (3) ◽  
pp. 447-456 ◽  
Author(s):  
O. Sahin ◽  
M. B. Taskin ◽  
E. C. Kaya ◽  
O. Atakol ◽  
E. Emir ◽  
...  
Keyword(s):  
Nutrient Availability ◽  
Calcareous Soil ◽  
Acid Modification ◽  
Maize Growth
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