scholarly journals Enriched Charred Rice Husk to Improve the Nutrient Management in Rainfed Groundnut

Author(s):  
P. Balasubramanian ◽  
C. R. Chinnamuthu

Background: The uncertainty of groundnut productivity in the rainfed areas could be minimized by in situ conserving the soil moisture received through precipitation during the cropping period and improving the nutrient status. Methods: A field experiment was conducted at the Department of Agronomy, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, Tamil Nadu during 2014-2015 rabi season to find out the effect of charred rice husk and other organic materials enriched with or without fertilizer nutrient on the moisture retention and nutrient supply during the deficit period of crop growth. The treatment consists of charred rice husk, biochar, lignite and farm yard manure alone and enriched with the recommended dose of nitrogen (10 kg ha-1) and phosphorus (10 kg ha-1) fertilizer and compared with the absolute control and recommended dose of fertilizer (10:10:45 kg NPK ha-1). Result: The structural morphology of organic materials was studied using Scanning Electron Microscope (SEM) showed that the particles of charred rice husk were uneven and the diameter varied from 3-4 ìm with clod and block appearance, the particles of biochar were irregular in shape, uneven sized and diameter varied from 2-3 ìm with block appearance and the lignite particles found spherical and aggregated. The chemical composition of organic manure with nutrient examined under SEM-EDAX revealed that the charred rice husk contains 64.31% carbon, 28.42% oxygen and 5.96% silica. Results of the study revealed that, application of enriched FYM at 5 t ha-1 recorded significantly higher pod yield (2190 kg ha-1). The enriched biochar and charred rice husk produced comparable pod yield of 2010 kg ha-1 and 1983 kg ha-1, respectively.

Author(s):  
K. Sai Manjeera ◽  
P. Venkata Subbaiah ◽  
P. R. K. Prasad ◽  
M. Sree Rekha

A field experiment was carried out to study the influence of different levels of humic acid (10, 20, 30 kg ha-1) and inorganic N fertilizer viz., 100 % of recommended dose and 75 % of recommended dose on chemical properties of soil under direct sown rice at Agricultural college farm, Bapatla during 2019. The experiment was laid out in RBD with ten treatments replicated thrice with BPT-5204 variety of rice as test crop. Soil samples collected at tillering, panicle initiation and harvest stages of crop were analyzed for chemical properties like available N, P2O5, K2O, Sulphur and cationic micro-nutrients (Fe, Mn, Zn, Cu). Results indicated that increased availability of N, P2O5, K2O, Sulphur and cationic micro-nutrients (Fe, Mn, Zn, Cu) were observed with the treatment T6 involving 100% RDN and HA @ 30 kg ha-1.


1970 ◽  
Vol 10 ◽  
pp. 63-67
Author(s):  
B. P. Bhattarai ◽  
C. S. Tomar

The study was conducted at 10 - years- old walnut orchard at Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni-Solan(H.P.) to find out the effect of integrated nutrient management on leaf nutrient status of walnut (Juglans regia L.). There were 13 different treatment combinations of organic and inorganic fertilizers. Treatments were applied on per tree basis. Among the treatments recommended dose of NPK +50kg vermicompost and three fourth recommended dose of NPK+68.75kg vermicompost were effective for improvement of leaf nutrient status.Key words: NPK; Neem cake; Vermicompost; Leaf nutrientDOI: 10.3126/njst.v10i0.2825Nepal Journal of Science and Technology Volume 10, 2009 December Page: 63-67  


Author(s):  
P. Balasubramanian ◽  
R. Babu ◽  
C.R. Chinnamuthu ◽  
P.P. Mahendran ◽  
K. Kumutha

Background: Different levels of nutrient management practice and soil amendments charred rice husk with Arbuscular mycorrhizae during the critical stages of the crop growth enhances the productivity of the groundnut crop. Methods: The field experiments were conducted summer, kharif and rabi seasons of 2016-17 and 2017-2018 at AC and RI, TNAU, Madurai. The main plots consisted of three levels of irrigation scheduling viz., I1- 0.8 IW/CPE, I2- 0.6 IW/CPE and I3- 0.6 IW/CPE ratio and sub plot comprised of four level of nutrient management practices viz., N1-75% of recommended dose of fertilizer with 5t of charred rice husk, N2- 50% of recommended dose of fertilizer with 5t of charred rice husk, N3-75% of recommended dose of fertilizer with 5t of charred rice husk along with seed treatment of Arbuscular mycorrhiza and N4- 50% of recommended dose of fertilizer with 5t of charred rice husk along with seed treatment Arbuscular mycorrhiza. Result: The study revealed that the highest plant height, dry matter production, leaf area index, leaf single photon avalanche diode value, pod yield and haulm yield, nutrient uptake (N,P,K) of groundnut crop and soil enzyme activities in soil was registered with the application of 75% recommended dose of fertilizer and 5t of charred rice husk as basal with seed treatment of Arbuscular mycorrhiza. The highest pod and haulm yield of 1783, 1935 and 1854 kg ha-1 and 4743, 4272 and 4338 kg ha-1 during summer, kharif and rabi’ 2017 seasons respectively of groundnut was registered with 75% of recommended dose of fertilizer and 5t of charred rice husk as basal with seed treatment of Arbuscular mycorrhiza.


Author(s):  
A. Aliveni ◽  
B. Venkateswarlu ◽  
M. Sree Rekha ◽  
P. R. K. Prasad ◽  
K. Jayalalitha

The present investigation was conducted for two consecutive years with the objective to know various crop geometries and nutrient management approaches on soil chemical properties at Agricultural college farm, Bapatla. The experimental design was split plot with three replications. The present study comprised of three crop geometries with different age of seedlings (30x10 cm with 30 days old seedlings, 30x30 cm with 15 days old seedlings and 45x45 cm with 15 days old seedlings) and seven nutrient management practices (S0: absolute control, S1: FYM @ 10 tonnes ha-1 + application of dravajeevamrutham, S2: FYM @ 10 tonnes ha-1 + application of  dravajeevamrutham along with wooden log treatment, S3: FYM @ 10 tonnes ha-1 + 100% RDF, S4: FYM @ 10 tonnes ha-1 + 100% RDF along with wooden log treatment, S5: FYM @ 10 tonnes ha-1 + 125% RDF, S6: FYM @ 10 tonnes ha-1 + 125% RDF along with wooden log treatment in subplots were given to kharif finger millet. integrated application of FYM @ 10 tonnes ha-1 + 125% RDF along with wooden log treatment (S6) resulted in higher organic carbon and nutrient status of the soil and reduced C:N ratio of the soil significantly though other soil properties were non significant due to various crop geometries and nutrient management treatments.


Author(s):  
Geetha P ◽  
A. Velayutham

An investigation was carried out to fine tune nutrient management techniques for improving the yield of rice fallow blackgram at the Wetlands of Tamil Nadu Agricultural University, Coimbatore in a split plot design. Three fertilizer application practices viz. recommended dose of fertilizer to preceding rice crop, recommended dose of fertilizer (last split through DAP based on N equivalent) to the preceding rice crop and basal application of fertilizer to blackgram of N and P2O5 @ 12.5:25 kg ha-1 (10 days prior to harvest of rice crop) formed the main plot treatments and foliar sprays viz., control, 1% urea, 2% DAP, 1% KCl and 2% DAP + 1% KCl twice at flowering and pod filling stages of crop growth constituted the subplot treatments. The treatments were replicated thrice. The results revealed that basal application of N and P2O5 fertilizers @ 12.5:25 kg ha-1 (10 days prior to harvest of rice crop) to blackgram favoured the nutrient uptake. Similarly the NPK uptake at harvest (64.64, 6.75 and 46.51 kg ha-1) and yield (1037 kg ha-1) were significantly influenced when foliar spray of 2% DAP + 1% KCl was given at flowering and pod filling stages of crop growth. Interaction between basal application of fertilizer N and P2O5 @ 12.5:25 kg ha-1 just before the harvesting of preceding rice crop along with foliar spray of 2% DAP + 1% KCl twice at flowering and pod filling stages was significant for NPK uptake, yield attributes and yield.


CATENA ◽  
2018 ◽  
Vol 171 ◽  
pp. 485-493 ◽  
Author(s):  
Chhatarpal Singh ◽  
Shashank Tiwari ◽  
Vijai Kumar Gupta ◽  
Jay Shankar Singh

2014 ◽  
Vol 6 (1) ◽  
pp. 294-297 ◽  
Author(s):  
V. Sanjivkumar

A field experiment was conducted to study the integrated use of organic and inorganic fertilizers on the soil fertility status of Entic Haplustart in maize at Malayalathanpatti village, situated at Madurai district during Kharif season of 2008-2009. The experiment was conducted in Randomized Block Design with three replications in Annaiyur soil series (Entic Haplustert). The results revealed that highest grain yield of 4402 kg ha-1 was recorded in treatment that received vermicompost @ 5t ha-1 with 75 percent Recommended dose of fertilizer (RDF) and it was found to be superior to over treatments. Application of vermicompost @ 5t ha-1+75 percent RDF recorded the highest calcium and magnesium content in pot harvest soil sample (0.139 and 0.281%). And also increased the crude protein (16.67 %) and starch (81.34 %) content in maize crop and it was followed by the treatment which received sewage sludge 2t ha-1 with 75 percent RDF (Recommended dose of fertilizers) and green leaf manure @12.5t ha-1whereas the lowest value was recorded in control plot respectively. The vermicompost along with inorganic fertilizers were efficiently used by maize crop for their growth and development and also maintainined soil fertility and increased yield of the crop.


2020 ◽  
Vol 1 (37) ◽  
pp. 108-114
Author(s):  
Chuong Van Nguyen ◽  
Chinh Trung Nguyen

The study on arsenic mitigation by liming method, combining organic material on soybean and corn crops on the dyke in An Giang, was conducted to determine the effect of lime combination rice husk ash (03 tons/ha) on the uptake of arsenic in soybean, and the effect of lime combination sawdust (02 tons/ha) on the uptake of arsenic in corn crops. The experiment was arranged in a completely randomized block field format, where the experiments were arranged with 2 treatments with 4 replicates: Treatment 1 (NT1): control (No liming combined with organic materials); Treatment 2 (NT2): liming combined with organic materials in a ratioof 1: 1 (Dosage: 03 tons / ha of lime mixture with rice husk biochar for soybean crop land, 02 tons / ha of mixed lime combined with sawdust for corn crop land). The results revealed that liming treatments combined withorganic materials increased pH H2O and arsenic in soil - the lime combination rice husk ash arsenic content in roots (0.836 mg/kg), leaf stems (0.83 mg/kg) and seeds (0.06 mg/kg) had results lower than the control treatments, 33.1%; 32.5% and 45.5% respectively. Applying and combining lime with sawdust resulted in lower arsenic content in leaf stems (95.3 mg/kg) and seeds (6.33 mg/kg) compared to the control treatmentsby 31.9% and 49.4%. Therefore, added lime combined with organic matter can decrease arsenic content in plants, and it is recommended that growers apply this technique to reduce the absorption of arsenic into crops.


Soil Research ◽  
2016 ◽  
Vol 54 (4) ◽  
pp. 451 ◽  
Author(s):  
Sushmita Munda ◽  
A. K. Nayak ◽  
P. N. Mishra ◽  
P. Bhattacharyya ◽  
Sangita Mohanty ◽  
...  

The effects of rice husk biochar (BC) and coal fly ash (FA) on growth and yield of rice and soil properties were investigated in a lowland rice soil. All growth parameters and yield were positively influenced by the integrated application of BC, FA and chemical fertilisers compared with sole application of chemical fertilisers. Yield increase was 16.4% when BC+FA was applied together with 50% of the recommended dose of nitrogen (N) compared with the recommended dose of N, phosphorus and potassium (NPK). Post-harvest soil analysis suggested that BC and FA both act as a supplier, as well as a reservoir of nutrients. Accumulation of heavy metals in soil and plant parts after harvest was below the toxicity threshold for plants and humans. There was also no significant change in microbial population compared with the initial soil. Therefore, combined application of BC and FA supplemented with chemical fertilisers could be recommended to improve soil fertility and crop productivity without affecting the soil quality.


Author(s):  
Baljinder Singh ◽  
Rakesh Kumar

The experiment was carried out during kharif season of 2013. The experiment was conducted in randomized block design with three replications using cv. HG - 365, with eleven treatments. The combination of FYM and vermicompost with two kinds of bio-fertilizers (Azotobacter and PSB) and reduced doses of chemical fertilizers were tested in comparison to recommended dose fertilizer. The yield components viz., number of clusters plant-1, number of pods in a cluster, length and diameter of pod differed significantly due to the different INM treatment. The treatment 75% of recommended dose of inorganic fertilizers and 25% RDF through vermicompost along with biofertilizers (Rhizobium at 25 g kg-1 seed + PSB at 5 kg ha- 1) recorded significantly highest pod yield (159.58 g plant-1). Hence, it was concluded that, for getting optimum growth, and higher pod yield the crop should be supplied with the 75% of recommended dose of inorganic fertilizers and 25% RDF through vermicompost alongwith biofertilizers (Rhizobium at 25 g kg-1 seed + PSB at 5 kg ha-1).


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