Effect of long-term manuring and fertilization on depth wise distribution of potassium fractions under sorghum-wheat cropping sequence in vertisol

Uttam

et al. 2023

IJPSS

India is the largest producer of Pulses, however productivity is stills very low, and need of millet is also increasing day by day in this concern to utilize the filed efficiently to get higher millet yield as well as pulses per unit area. A field experiment was conducted during kharif season of 2017 at Soil Conservation and Water Management Farm of the Chandra Shekhar Azad University of Agriculture and Technology, Kanpur to find out effect of cropping systems of different row ratio and doses of farm yard manure (FYM) on, yield and economics of crops under rainfed condition. The treatments comprised of 4 cropping systems i.e. (i) sole sorghum, 45 cm apart (ii) sole greengram, 45 cm apart (iii) sorghum + greengram (2:1 row ratio ) (iv) sorghum + greengram (3:1 row ratio) and 3 doses of FYM i.e. (i) without FYM (ii) 10 t/ha (iii) 20 t/ha were tested in Factorial Randomized block design with 3 replications. Results obtained that the yield of sorghum and greengram were highest in their sole stands. The yield of sole and intercropped greengram in terms of sorghum equivalent grain yield showed significantly (p <0.05) variation, whereas sorghum + greengram (2:1 row ratio) brought out significantly (p <0.05) the highest production as compared to other cropping systems. Moreover, the land equivalent ratio, gross return and net return were also found to be the highest. Simultaneously Increasing rates of FYM brought out significant (p <0.05) improvement in vegetative growth, yield attributes and grain/stover yield, where a dose of 10 t FYM/ha gave best performance in respect of vegetative growth, yield attributes and grain/stover yield. In addition, net return was also noticed higher.

Section: Economicssupporting

confidence: 94%

Response of Organic Fertilizers on Sorghum: Greengram Intercropping on Yield Attribute, Yield, and Economics at Varying Row Ratios under Rainfed Situations

Uttam

et al. 2023

IJPSS

“…Water soluble potassium decreased with increase in depth. The increase in water soluble K with the addition of FYM along with chemical fertilisers may be due to stimulating effect of FYM in reducing K fixation, thereby bringing in more K into available form [7]. Similar results have also been reported by Sharma et al [8].…”

Section: Water Soluble Potassiumsupporting

confidence: 83%

Fractions of Soil Potassium and their Depthwise Distribution under Long-Term Nutrient Management Practices in Semiarid Alfisols in India

Saritha

Sridevi

Ramprakash

et al. 2021

IJECC

A field experiment was conducted on a long-term experimental plot during two consecutive rabi seasons of 2016-17 and 2017-18 at the college farm, College of Agriculture, Rajendranagar, Hyderabad, PJTSAU. The experimental soil was non-saline, neutral in reaction with sandy loam texture. Different forms of soil potassium were studied with six different nutrient management practices in randomized block design with four replications. The results of pooled data of two years study revealed that significantly higher contents of water soluble potassium (17.77 mg kg-1), exchangeable potassium (568 mg kg-1), nonexchangeable potassium (999 mg kg-1) and Total potassium (1.80%) in surface layer (0-15 cm) at flowering were recorded with integrated application of 50% N through FYM and 50% N through chemical fertilizers and it was on par with treatment applied 100% RDF through chemical fertilisers and significantly superior over other organic nutrient management treatments. A similar trend was observed at all soil depths (15-30, 30-45, 45-60 cm) and all the contents were decreased from flowering to harvest. All potassium forms decreased with increasing the depth except non exchangeable K. All the fractions were found to be significant in surface layer (0-15 cm). The contribution of different forms of soil K to Total K was in the order of non-exchangeable K> exchangeable K> water soluble K and similar trend was observed in all soil layers.

“…humus retains divalent cations (Ca , Mg ) more strongly than monovalent cations. Hence, weaker retention of potassium relative to calcium and magnesium may increase potassium availability (Nagar et al, 2016;Jadhao et al, 2018). Thus, significant increase in available nutrients in soil was due to increased mineralization of organic nutrients by active microorganisms and the regular dynamics of biomass carbon (Nardi et al, 2004;Vel Murugan and Swarnam, 2013;Roy and Kashem, 2014).…”

Section: Resultsmentioning

confidence: 99%

Soil carbon, microbial biomass carbon, soil health and productivity of toria (Brassica campestris L.) crop as affected by the application of organic manures

Gogoi¹,

Kalita²,

Bhupenchandra³

et al. 2021

JEB

Aim: To investigate the effect of different organic manures on the performance of toria crop and to understand their impact on the soil properties and availability of nutrients in acidic sandy loam soil. Methodology: Three-year fixed plot study was conducted with 7 treatments viz., T1: control, T2: recommended dose of fertilizers (RDF), T3: cow dung manure @ 5 t ha-1, T4: pig dung manure @ 5 t ha-1, T5: goat dung manure @ 5 t ha-1, T6: farm yard manure (FYM) @ 5 t ha-1, and T7: vermicompost @ 5 t ha-1 replicating 3 times in a complete randomized block design. Data were collected and analysed following the standard procedures. The yield and yield attributing parameters of toria and the soil properties such as soil pH, organic carbon, microbial biomass carbon and available NPK were studied. Results: Application of different organic manures significantly affected the plant height, number of primary branches per plant, number of siliquae per branch, number of seeds siliqua and 1000-seed weight of toria crop. Addition of organic manure significantly enhanced the soil organic carbon, microbial biomass carbon and available NPK in the soil over initial, except soil pH. The cost of cultivation, gross return and net return varied from 10.50 ×103 to 23.10 ×103, 15.00 ×103 to 35.10 ×103 and 4.46 ×103 to 19.96 ×103 Rs. ha-1, respectively. The B:C ratio varied in the order of goat dung manure > cow dung manure >RDF >FYM > pig dung manure > vermicompost > control treatment. Interpretation: To achieve maximum performance with nourishment of soil quality and health, application of vermicompost was confirmed to be the best over other organic sources of nutrients primarily due to enhancement in C and N status and an increase in microbial activities in soil.