scholarly journals REMOVAL OF NUTRIENTS AS INFLUENCED BY VARIED RATES OF RECOMMENDED NUTRIENTS IN CONJUNCTION WITH BIOFERTILIZERS IN LOCAL LANDRACES OF PADDY IN COASTAL AREA OF KARNATAKA, INDIA

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
Nataraja T.H ◽  
Raja Naika ◽  
Amit Kumar Singh ◽  
Shashidhar K. S.
Keyword(s):  
Nutrient Removal ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Plant Nutrient ◽  
Microbial Inoculants ◽  
Fixed Nitrogen ◽  
Soil Nutrient Status ◽  
Paddy Crop ◽  
Uptake Of Nutrients ◽  
Different Levels

The uptake of nutrients by the paddy crop better indicative of the fertility, productivity, and plant nutrient status. The main objective of this investigation was that the rate of nutrient application can influence the removal of nutrients into formsavailable to the soil with different landraces in conjunction with the application of different microbial inoculants under different fertility levels. The yield of landraces was significantly influenced by the microbial inoculants under different fertility levels.Significantly higher uptake of N, P and K was observed in the landrace padmarekha compared to other landraces. The nutrient removal from the soil was in the range of 81.57 – 104.08 kg N, 19.55 -33.96 kg P and 88.15 – 111.81 kg/ha Kamong landraces. Similarly, the higher uptake was seen with the application of 100 per centRDF along with the azospirullum, Bacillus megatherium var. Phosphoticum Frateuria quaratia,Thiobacillus thiooxidans and Vesicular ArbescularMycorrizae.The nutrient removal was in the range of 47.11-122.0 kg N, 10.71-36.7 kg P2O5 and 34.22- 141.21 kg/ha K2O among fertility levels in different paddy landraces used in the study. The different microbial inoculants application with the recommended dose of fertilizers in different levels helped in the acquisition of the nutrients from the soil solution illustrating the effects of microbial applications through the increased supply of biologically fixed nitrogen, mobilizing the phosphorus towards plant roots, and potassium availability to the crop. Thus, our investigations acclaim that there is a need to inoculate the crop with different microbial inoculants to increase the use and uptake of the nutrients by the crop and improvement in soil nutrient status.

scholarly journals BORON ON PRODUCTIVITY AND NUTRIENT STATUS OF RICE (ORYZA SATIVA L.) IN KOLE LANDS , KERALA, INDIA

2021 ◽  
Vol 21 (No 1) ◽  
Author(s):  
A Latha ◽  
Asha V Pillai
Keyword(s):  
Oryza Sativa L ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Thousand Grain Weight ◽  
Soil Nutrient Status ◽  
Yield Attributes ◽  
Pooled Data ◽  
Positive Effect ◽  
Different Levels ◽  
Growth Characters

An experiment was conducted in farmer’s field at different locations of kole lands to study the effect of micro nutrient Boron on yield and soil nutrient status of rice during 2012-2014. The treatments comprised of different levels of B viz; 2.5 kg Borax/ ha, 5 kg Borax/ha, 10 kg Borax/ha, 12.5 kg Borax/ha, 15 kg Borax/ha and untreated control. Observations on growth characters, yield attributes, yield and soil and plant nutrient status were recorded. The application of 15 kg borax /ha recorded the maximum number of panicles/m2 , number of grains /panicles, thousand grain weight, grain and straw yield of rice. The results of pooled data on plant and soil nutrient status revealed that application of boron had a positive effect on uptake and availability of nutrients in soil. The study concluded that the soil application of borax@ 15 kg /ha was found to be good for correcting the deficiency in B deficient areas of Kole lands.

scholarly journals Nutrient removal by rice–wheat cropping system as influenced by crop establishment techniques and fertilization options in conjunction with microbial inoculation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Amit Anil Shahane ◽  
Yashbir Singh Shivay ◽  
Radha Prasanna ◽  
Dinesh Kumar
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Removal ◽  
Nutrient Balance ◽  
Cropping System ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Soil Nutrient Status ◽  
Important Indicator ◽  
Microbial Inoculation ◽  
Crop Establishment

AbstractNutrient uptake by the rice–wheat cropping system (RWCS) is an important indicator of soil fertility and plant nutrient status. The hypothesis of this investigation was that the rate and sources of nutrient application can differentially influence nutrient removal and soil nutrient status in different crop establishment techniques (CETs). Cropping system yield was on par in all the CETs evaluated, however, there were significant changes in soil nutrient availability and microbiological aspects. The system nitrogen (N), phosphorus (P), potassium (K) and zinc (Zn) uptake in aerobic rice system followed by zero tillage wheat (ARS-ZTW) was 15.7–17.6 kg ha−1, 0.7–0.9 kg ha−1, 7–9.8 kg ha−1 and 13.5–23.1 g ha−1 and higher than other CETs. The formulations of Anabaena sp. (CR1) + Providencia sp. (PR3) consortium (MC1) and Anabaena–Pseudomonas biofilm (MC2) recorded significantly higher values of soil chlorophyll and microbial biomass carbon and positively affected cropping system nutrient uptake and soil nutrient balance, illustrating the beneficial effect of microbial inoculation through increased supply of biologically fixed N and solubilised P. Zinc fertilization (5 kg Zn ha−1 through ZnSO4·7H2O as soil application) increased soil DTPA-extractable Zn by 4.025–4.836 g ha–1, with enhancement to the tune of 20–24% after two cropping cycles of RWCS. Our investigation recommends the need for change in the present CETs to ARS–ZTW, along with the use of microbial inoculation as a means of significantly enhancing cropping system nutrient uptake and soil nutrient status improvement.

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