Long-term influence of organic and inorganic fertilizers on nutrient build-up and their relationship with microbial properties under a rice-wheat cropping sequence in an acid alfisol

2009 ◽  
Vol 57 (3) ◽  
pp. 297-306 ◽  
Author(s):  
P. Bedi ◽  
Y. Dubey
Keyword(s):  
Wheat Straw ◽  
Green Manure ◽  
Soil Samples ◽  
Microbial Count ◽  
Inorganic Fertilizers ◽  
Microbial Properties ◽  
Cropping Sequence ◽  
Organic And Inorganic Fertilizers ◽  
Nitrogen Phosphorus

The long-term effect of organic and inorganic fertilizers on nutrient build-up and their relationship with microbial properties in a rice-wheat cropping sequence were studied in surface (0–15 cm) and subsurface (15–30 cm) soil samples. This experiment has been in progress since 1990 in the Department of Agronomy, CSK, Palampur with twelve treatments involving combinations of organic and inorganic fertilizers. In these treatment combinations, 25 and 50% of the recommended nitrogen levels were supplemented with organic sources, i.e. FYM (farm yard manure), green manure and wheat straw. The buildup of organic matter, and the total and available pools of nitrogen, phosphorus and sulphur were determined in surface (0–15 cm) and subsurface (15–30 cm) soil samples. The substitution of 25 and 50% nitrogen through organic fertilizers proved to be better than inorganic fertilizers alone. Amongst the organic sources, the substitution of FYM resulted in higher organic carbon, total and available nitrogen, phosphorus and sulphur than green manure or wheat straw. The substitution of 50% nitrogen through organic fertilizer was more effective than the substitution of 25% nitrogen. The relationships between the total and available pools of nutrients and the total microbial count, biomass carbon, microbial respiration, and the dehydrogenase and phosphatase enzymes were studied. The total pool of nutrients showed a high, positive, significant relationship with all these parameters.

scholarly journals Long Term Effects of Organic and Inorganic Fertilizers on Rice under Rice-Wheat Cropping Sequence

1970 ◽  
Vol 9 ◽  
pp. 7-13 ◽  
Author(s):  
Yagya Gajadhar Khadka ◽  
Suresh Kumar Rai ◽  
Sambhu Raut
Keyword(s):  
Organic Carbon ◽  
Grain Yield ◽  
Rice Yield ◽  
Alluvial Soil ◽  
Available Phosphorus ◽  
Inorganic Fertilizers ◽  
Cropping Sequence ◽  
Phosphorus And Potassium ◽  
Organic And Inorganic Fertilizers

A long term field experiment was started in 1989 on alluvial soil of Inceptisol at Agronomy Research Farm, Khumaltar, Lalitpur to evaluate the effects of organic and inorganic fertilizers on soil properties and yields of rice under ricewheat cropping sequence. Rice yield was monitored from 1998 to 2003. Chianung-242 rice variety was used as a test crop for all of the five years of experimentation. All the treatments manifested significant increase in rice yield over control. Results showed highest significant grain yield of 7.9 tons ha-1 from the sole application of farmyard manure (FYM) @ 10 tons ha-1. The long-term experiment exhibited that the balanced application of chemical fertilizers alone did not sustain soil productivity under continuous cropping system. Application of 100 kg N ha-1 alone produced the yield up to 7.2 tons ha-1 whereas phosphorus and potassium did not affect the yields in most of the years. None of the soil properties, soil pH, organic carbon, total nitrogen, available phosphorus and potassium were affected by application of balanced fertilizers while with the application of 10 tons FYM ha-1, the total nitrogen, available phosphorus and organic carbon contents in the soil were improved as compared to other treatments. The efficiency of fertilizers and manure was influenced by the amount of rainfall received as reflected by the higher grain yield during the higher rainfall years. Key words: rice, alluvial soil, organic manure, inorganic fertilizers, rice-wheat system DOI: 10.3126/njst.v9i0.3156 Nepal Journal of Science and Technology 9 (2008) 7-13

Variation in soil bacterial communities by long-term application of organic and inorganic fertilizers in rice

2019 ◽  
Vol 11 (3) ◽  
Author(s):  
Ashwini Shanthpure ◽  
Devaki Girija ◽  
Panchami Pottekkat Sidharthan ◽  
Moossa Puthen Peedikakkal ◽  
Sneha Sasidharan Nair
Keyword(s):  
Bacterial Communities ◽  
Inorganic Fertilizers ◽  
Soil Bacterial Communities ◽  
Soil Bacterial ◽  
Organic And Inorganic Fertilizers

scholarly journals Chemical and Biological Properties of Sandy Loam Soil in Response to Long-Term Organic–Mineral Fertilisation in a Warm-Summer Humid Continental Climate

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1610
Author(s):  
Iwona Jaskulska ◽  
Joanna Lemanowicz ◽  
Barbara Breza-Boruta ◽  
Anetta Siwik-Ziomek ◽  
Maja Radziemska ◽  
...  
Keyword(s):  
Sandy Loam ◽  
Size Composition ◽  
Biological Properties ◽  
Soil Samples ◽  
Available Phosphorus ◽  
Organic Carbon Content ◽  
Nitrogen And Phosphorus ◽  
Organic Mineral ◽  
Nitrogen Phosphorus

In 2019, 71 years after the establishment of a static fertiliser experiment, the chemical and biological properties of Luvisol soil with sandy-loam grain-size composition were determined. Soil samples were taken from six fertilised treatments: half-dose nitrogen, phosphorus and potassium in mineral fertilisers (½ NPK); full-dose nitrogen, phosphorus, potassium (NPK); manure fertilisation + nitrogen, phosphorus, potassium, magnesium and liming (FYM NPK Mg Ca); manure + mineral fertilisers without magnesium and liming (FYM NPK); manure + nitrogen and phosphorus (FYM NP); manure + nitrogen and potassium (FYM NK). The soil was tested in two layers at depths of 0–20 cm and 20–40 cm. Soil samples were tested for: pH in 1 M KCl (pH); electrical conductivity (EC); organic carbon content (OC); content of available phosphorus (Pa), potassium (Ka), magnesium (Mga) and sulphate sulphur (S-SO4); total number of bacteria (Bt), cellulolytic microorganisms (Bc), fungi (Ff) and actinomycetes (Ac); and alkaline phosphatase (AlP), acid phosphatase (AcP) and arylsulphatase (ArS) activity. The fertilisation that most favourably affected the chemical and biological properties of the soil was FYM NPK Mg Ca. This fertilisation increased: pH and EC; OC, Ka and Mga contents; Bt and Bc abundance; and AlP activity relative to all the methods of mineral and organic–mineral fertilisation that did not include all the ingredients of mineral fertilisers. On the other hand, the least favourable soil properties were formed by ½ NPK fertilisation in the 0–20 cm layer, and by the long-term use of mineral fertilisers only in the 20–40 cm layer.

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