Inorganic Fertilizer Research Articles

Effect of organic and inorganic fertilizers on growth, yield attributes and yield of barley (Hordeum vulgare L.)

Effect of organic and inorganic fertilizers on growth, yield attributes and yield of barley (Hordeum vulgare L.)

Integration of organic manures and inorganic fertilizers on soil properties at different growth stages and yield of paddy in coastal saline soil of Maharashtra

Integration of organic manures and inorganic fertilizers on soil properties at different growth stages and yield of paddy in coastal saline soil of Maharashtra

Morphological and physiological plasticity of tomato in response to Azolla fern, a novel organic fertilizer of environmentally friendliness

Tomatoes are highly valued vegetable crops due to their excellent nutritional content. However, production remained low due to an incorrect combination of organic and inorganic soil nutrition. A pot experiment was conducted under shaded conditions with Azolla and inorganic nitrogen fertilization to determine the morphological and physiological plasticity of tomatoes. The study used a factorial combination of four levels of Azolla (0, 25, 50, and 75 g per pot) and four levels of nitrogen (0, 0.23, 0.46, and 0.69 g per pot) in a complete randomized design with three replications. We collected data on chlorophyll content (Chl a, Chl b, TChl), photosynthetic rate, water use efficiency, transpiration rate, stomata number, branch number (primary and secondary), plant height, leaf area, stomata conductance, relative water content, and number of leaves. Analysis of variance was employed to analyze the data, and the means were separated using the least significant differences test at a 5 % significance level. The results showed that primary and secondary branches, stomata number, transpiration rate, and water use efficiency were highly plastic due to the higher nitrogen levels and Azolla alone. The interaction effect of Azolla and nitrogen had a significant influence on chlorophyll content, photosynthesis rate, stomatal conductance, relative water content, number of leaves, plant height, and leaf area. It can be concluded that a balanced combination of organic and inorganic fertilizers remains essential for optimal tomato growth and physiology, emphasizing that the exclusive use of organic farming methods may not be the ideal solution.

Relationships and determinants of adoption of sustainable land management technologies in Eastern and Southern Highlands of Ethiopia

Degraded land is a major danger to agricultural productivity and food security in Ethiopia. Sustainable land management technologies (SLMTs), through targeted interventions, have been applied to address this problem. Notwithstanding some of the known agricultural and environmental benefits connected with the adoption of some SLMTs, the adoption rate remains below expectations. Therefore, this study aims to analyze the relationships and determinants of the adoption of SLMTs in eastern and southern Ethiopia. Data were collected from 384 sampled households selected using multi-stage sampling techniques. Descriptive statistics and multivariate probit (MVP) model were used to analyze data. Estimated results of MVP revealed that the adoption of SLMTs is positively and significantly influenced by education level, livestock, membership in a social group, extension contacts, access to SLM information, training, credit, land tenure, and slope, while age, farm distance, and the number of active family members due to youth migration abroad had negative effects. The widely adopted SLMTs on farmlands were inorganic fertilizer (49.5%), soil bunds (48.4%), bench terraces (47.2%), intercropping (46.1%), and manure (38%). This study concluded that farmers invested a blend of SLMTs, some of which complemented and others substituted for one another. Therefore, policy-makers and planners should focus on fortifying human and local institutions’ capacity to implement SLM and consider SLM technology interdependencies before communicating with farmers.

Effect of organic manure and inorganic fertilizer on growth, curd yield and quality of cauliflower

Effect of organic manure and inorganic fertilizer on growth, curd yield and quality of cauliflower

Partial replacement of inorganic fertilizer with organic inputs for enhanced nitrogen use efficiency, grain yield, and decreased nitrogen losses under rice-based systems of mid-latitudes

In the rice-based system of mid-latitudes, mineral nitrogen (N) fertilizer serves as the largest source of the N cycle due to an insufficient supply of N from organic sources causing higher N losses due to varying soil and environmental factors. However, aiming to improve soil organic matter (OM) and nutrients availability using the best environmentally, socially, and economically sustainable cultural and agronomic management practices are necessary. This study aimed to enhance nitrogen use efficiency (NUE) and grain yield in rice-based systems of mid-latitudes by partially replacing inorganic N fertilizer with organic inputs. A randomized complete block design (RCBD) was employed to evaluate the effects of sole mineral N fertilizer (urea) and its combinations with organic sources—farmyard manure (FYM) and poultry compost—on different elite green super rice (GSR) genotypes and were named as NUYT-1, NUYT-2, NUYT-3, NUYT-4, NUYT-5, and NUYT-6. The study was conducted during the 2022 and 2023 rice growing seasons at the Rice Research Program, Crop Sciences Institute (CSI), National Agricultural Research Centre (NARC), Islamabad, one of the mid-latitudes of Pakistan. The key objective was to determine the most effective N management strategy for optimizing plant growth, N content in soil and plants, and overall crop productivity. The results revealed that the combined application of poultry compost and mineral urea significantly enhanced soil and leaf N content (1.36 g kg− 1 and 3.06 mg cm− 2, respectively) and plant morphophysiological traits compared to sole urea application. Maximum shoot dry weight (SDW) and root dry weight (RDW) were observed in compost-applied treatment with the values of 77.62 g hill− 1 and 8.36 g hill− 1, respectively. The two-year mean data indicated that applying 150 kg N ha⁻1, with half provided by organic sources (10 tons ha⁻1 FYM or poultry compost) and the remainder by mineral urea, resulted in the highest N uptake, utilization, and plant productivity. Thus, integrated management of organic carbon sources and inorganic fertilizers may sustain the productivity of rice-based systems more eco-efficiently. Further research is recommended to explore root and shoot morphophysiological, molecular, and biochemical responses under varying N regimes, aiming to develop N-efficient rice varieties through advanced breeding programs.

Vermiwash: An effective nutritive blessing to crops

Under alarming situation of poor soil health, reduction in produce, increase in incidences of pest and disease and environmental pollution due to the application of chemical fertilizers over a period, it is necessary to look for alternatives which are effective and eco-friendly for sustainable agriculture. Therefore, it is very important to seek alternative as a supplement for chemical fertilizers. To cope with these problems, vermiwash can play an important role in ensuring a sustainable agricultural system. A review was conducted on vermiwash to assess the characteristics, potentiality to use and ultimately beneficial effects in sustainable agriculture. Vermiwash is coelomic fluid extraction contains significant quantities of nutrients, a large beneficial microbial population, biologically active metabolites particularly gibberellins, cytokinins, auxins and group B vitamins which can be applied alone or in combination with organic or inorganic fertilizers, so as to get better yield and quality of diverse crops. Evidences proved that qualities of vermiwash depend on the used organic bed producing vermicompost. Vermiwash can serve as a valuable foliar spray, because it is a combination of earthworm mucous discharges, nutrients, microorganisms and plant growth promoting materials composed of excretory products and mucus secretions from earthworms and micronutrients from the organic molecules in the soil. These nutrients are absorbed and then transported to the leaves, shoots, and other parts of a plant. Application of vermiwash improves plant health, yield and nutritional quality. Vermiwash proves to be an effective fertilizer which contributes the growth of plants when sprayed directly as well as mixed with a definite ratio of vermicompost. It was also observed that the plants treated with vermiwash were disease resistant and no any worms like leaf eaters were seen on the leaves and other parts of plants. Vermiwash can be used as a substituent of commercial fertilizers available in the market. Vermiwash acts not only as a liquid organic fertilizer but also act as mild biocide. It can be used as an effective input in organic agriculture for both soil health and disease management for sustainable crop production with low cost which could be ensure food security. Bangladesh J. Nuclear Agric, 38(1): 21-40, 2024

Influence of various organic nutrient management technologies on microbial abundance, growth, and yield of rice (Oryza sativa L.) under field conditions

A field study (three years) was carried out to evaluate the outcome of various organic nutrient management technologies including farmyard manure (FYM) and poultry manure (PM) integrated with chemical fertilizers for microbial dynamics and growth and yield of rice at Experimental Farm of Nuclear Institute of Agriculture (NIA), Tandojam, Sindh, Pakistan. The most broadly grown rice variety, NIA-Shandar was selected for this study. The experiment involved integrating organic technologies, specifically Farm Yard Manure (FYM) and Poultry Manure (PM), each applied at 10 tons per hectare. These organic technologies were combined with varying levels of inorganic fertilizers: half (60 kg N ha-1 and 45 kg P2O5 ha-1) and full (120 kg N ha-1 and 90 kg P2O5 ha-1) recommended doses. Additionally, zinc was applied at 10 kg ha-1. The study employed a randomized complete block design (RCBD) with three replications to assess treatment effects. Both organic technologies perform better for microbial dynamics and rice growth and yield enhancement either alone technology or combined with chemical fertilizers during three rice seasons. The maximum general microbial abundance (9.70 log10 CFU g soil-1), N2 fixing (7.37 log10 CFU g soil-1), P solubilizing (7.97 log10 CFU g soil-1) and Zn solubilizing(6.75 log10 CFU g soil-1) population was recorded in FYM alone or with half N and P2O5 fertilizer application. The highest plant height (106 cm), tiller numbers(17.10), panicle numbers (26.53), panicle length (26.32 cm), one thousand grainweight (26.53 g) and rice grain yield (7.92 t ha-1) were perceived in FYM with full rate N and P2O5 fertilizer application. Both technologies along with chemical fertilizer induced soil properties and soil nutrients which reflected to increase soil microbial abundance and growth and yield of rice however, FYM showed higher potential than poultry manure during the three years rice cultivation seasons. Hence, it was indicated that a significant contribution to the development of sustainable agricultural technologies that prioritize soil health,environmental stewardship, and food security.

Determining the Effect of Integrated Nutrient Management (INM) on the Growth of Tuberose (Polianthes tuberosa L.) cv. Rajat Rekha

Tuberose, a valuable ornamental crop, requires optimized nutrient management to maximize its potential. With increasing concerns about chemical fertilizer usage, integrated nutrient management (INM) offers a sustainable alternative. This study investigated the effects of INM on Tuberose (Polianthes tuberosa L.) cv. Rajat Rekha, exploring combinations of organic and inorganic fertilizers to promote growth and productivity. The results showed that integrated nutrient management significantly enhanced growth parameters. Specifically, the treatment combining 75% Recommended Dose of Fertilizer (RDF) with 2 kg Farm Yard Manure (FYM)/m2, 300g Vermicompost (VC)/m2, Phosphate Solubilizing Bacteria (PSB), and Azospirillum (T15) yielded superior results. This treatment reduced days to sprouting (12.10 and 14.18), and improved plant height (40.8 and 41.7 cm), leaf length (48.0 and 48.6 cm), leaf width (1.78 and 1.80 cm), and leaf number (60.8 and 61.4). These findings suggest that integrated nutrient management can enhance Tuberose productivity while minimizing chemical fertilizer reliance. The identified optimal treatment combination offers a viable strategy for sustainable Tuberose cultivation, contributing to environmentally friendly agricultural practices. Future research can focus on scaling up these results and exploring potential applications in other ornamental crops.

Analisis Faktor-Faktor Yang Memengaruhi Keputusan Pembelian Pupuk Anorganik (Kasus : Desa Srimulyo Dan Sukodono, Kecamatan Dampit)

Inorganic fertilizers are currently still widely used and are the main choice for farmers because they can increase crop productivity. Companies need to pay attention to consumer orientation, which is related to how to find the target market, needs and convince consumers to make a purchase. This study aims to analyze the influence of brand image, price, review, ecology, and credibility on the decision to purchase inorganic fertilizers by coffee farmers. The locations taken are Srimulyo and Sukodono villages, Dampit District, considering that the village is the largest coffee-producing village in Malang. Purposive sampling was used for sampling as many as 35 coffee farmers with the provision of using and purchasing inorganic fertilizers. The data used in the study is primary data collected through surveys with observations, interviews, questionnaires and documentation. The research uses SEM (Structural Equation Modelling) data analysis with the PLS (Partial Least Square) approach, and conducts data analysis with the help of SmartPLS 4.0 software. The results of the analysis of respondent characteristics showed that most coffee farmers were dominated by men and the level of education of farmers varied from elementary to bachelor's degree. Most of the respondents' farming experience was from 1 to 50 years with a maximum land area of 2 ha. Testing the inner model obtained a determination coefficient (R-Square) of 60.1% brand image, price, reviews, ecology, and credibility were able to explain the influence on the decision to purchase inorganic fertilizers by farmers. The results of bootstrapping data showed that brand image and ecological had a significant negative effect and reviews had a significant positive effect on the decision to purchase inorganic fertilizers. Factors that do not affect the decision to buy inorganic fertilizers are price and credibility

Production and Marketing Strategies of Pineapple Growers in Calauan, Laguna, Philippines

Pineapple holds significant economic importance in the Philippines due to its widespread cultivation, prominent export position, and favorable climate. As a leading producer and exporter, the country makes a substantial contribution to the global market. This study primarily focused on data collection concerning the production and marketing system of pineapple in Calauan, Laguna, Philippines. The descriptive research design was used in the study covering the quantitative data gathered from fifty- two (52) pineapple growers utilizing checklist-based questionnaire. The study revealed that production of pineapple was established for more than 10 years in a one to two hectares of land generating an approximate income of PhP 100,000.00 to PhP 200,000.00 annually. Most common pineapple cultivar planted was Smooth cayenne or Hawaiian cultivars. Data revealed that the production systems undertaken by the pineapple growers in Calauan, Laguna were grown in a free draining loam soil applied with inorganic fertilizer every two months and regular weeding was done. Harvesting was done manually to maintain the quality of fruits. Direct marketing of pineapple showed helpful to the growers for easy generation of income after harvesting. Common preference on Calauan pineapple was based on its sweetness regardless of its size and mostly bought by the buyers and consumers in farm gate level. Pricing of pineapples were based on its size considering its class. Promotion and sales of pineapples were based on direct selling and wholesale and on cash basis. The study identified several challenges low demand of product, low supply of product, lack of planting materials and pest and diseases. To address these challenges, the study recommended that pineapple growers may explore biotechnologies through government intervention to increase the number of planting materials and production of quality pineapple. It also recommended that pineapple growers may attend training's and seminars regarding marketing, bookkeeping and post-harvest for value adding technologies that will help to increase the income.

Optimizing inorganic blended fertilizer application for the maximum grain yield and profitability of bread wheat and food barley in Dawuro Zone, Southwest Ethiopia

Abstract In a specific area, fertilizer application for a crop depends on the soil type and profitability. Optimizing chemical fertilizer utilization in crop production is crucial from an environmental and economic point of view. However, there is limited information available on the optimum NPSB fertilizer rate for the production of wheat and barley in the study area. Thus, the study aimed to establish area-specific NPSB (18.9% N, 16.44% P, 6.95% S, and 0.1% B) blended fertilizer rate recommendations for the optimal grain yield and profitability of wheat and barley. The field experiment was conducted in two locations in the 2021 and 2022 cropping seasons using a randomized complete block design with three replications. The nine treatments included 0, 25, 50, 75, 100, 125, 150, 175, and 200 kg ha−1 NPSB fertilizer rates. Growth, yield, and yield component data in wheat and barley were collected from randomly selected individual plants and the net plot area. An economic analysis was conducted for grain yield using the procedure established by the International Maize and Wheat Improvement Center. The analysis of variance results showed that blended fertilizer significantly (p < 0.01) affected plant height, number of productive tillers, spike length, number of kernels, thousand seed weight, biomass yield, grain yield, and harvest index traits. The application of a 150 kg ha−1 NPSB rate produced the highest grain yield (5419.0 kg ha−1) in wheat, whereas the application of a 125 kg ha−1 NPSB rate gave the maximum grain yield (4708.0 kg ha−1) in food barley. The economic analysis revealed that the application of a 150 kg ha−1 NPSB fertilizer rate for wheat gave the highest net benefits (309711.50 ETB ha−1) and marginal rate of return (MRR) (4096.96%), while the application of a 125 kg ha−1 NPSB fertilizer rate for barley obtained the highest net benefits (184424.00 ETB ha−1) and MRR (2195.39%). Therefore, to optimize the productivity and profitability of wheat and barley in the study area and similar agroecologies, farmers are recommended to use 150 kg ha⁻¹ NPSB for wheat and 125 kg ha⁻¹ NPSB for barley.

Nutrition for commercial flower production of Longiflorum asiatica (LA) hybrid under northern plains

The study was conducted during the winter seasons, comprising the various combinations of inorganic fertilizers (N, P2O5, and K2O) and organic manure (FYM). Treatment T24 [(25 t FYM+160 kg N+120 kg P2O5+100 kg K2O)/ha] emerged as the statistically significant treatment, outperforming others in respect of tallest plant (122.43 cm), leaf count per plant (79.33), leaf length (7.90 cm), and early flower bud initiation (28.01 days), bud initiation to colour shown (47.11 days), and colour shown to flower opening (6.10 days). This treatment also tended to show the longest flower retention on plant (15.30 days), number of flower buds per plant (4.20), bud length (8.96 cm), stalk length (110.10 cm), stalk diameter (0.96 cm), flower diameter (22.98 cm), total chlorophyll content (6.50 mg/g), leaf nitrogen (4.70%), potassium (4.10%), and net assimilation ratio (NAR) (0.0065 mg/cm2/ day). Treatment T23 [(25 t FYM+120 kg N+90 kg P2O5+75 kg K2O)/ha] proved next best treatment. The lowest value was recorded in T25 (Control). Overall, treatment T24 proved to be the most effective treatment statistically for the commercial flower production of LA hybrid lilium for northern Indian plains.

Divergent responses of soil aggregation and aggregate-carbon to fertilization regimes jointly explain soil organic carbon accrual in agroecosystems: A meta-analysis

Soil aggregation can be substantially affected by fertilizers and contributes to soil organic carbon (SOC) sequestration in agroecosystems. However, the mass and C distributions in different aggregates in responses to fertilization regimes are not often synchronous, which may largely affect soil C storage and stability. We conducted a meta-analysis of 2440 paired observations from 63 publications to assess the fertilization effects (i.e. inorganic, organic, and their combinations) on soil aggregation and aggregate-associated OC, as well as their linkages to the stimulated bulk soil C. Overall, fertilizer application significantly increased the mean weight diameter of soil aggregates by 27.8%. The proportion of large (> 2mm) and small (0.25-2mm) macroaggregates were significantly increased by 19.8% and 17.2%, and that of microaggregate (0.053-0.25mm) and silt-clay fraction (< 0.053mm) were significantly decreased by 6.0% and 18.4%, respectively. In contrast, fertilization significantly increased C concentration in all aggregates. Organic fertilizer applications had remarkably greater effects than inorganic fertilizer applications on soil C concentration but the effects declined with decreasing aggregate size (from 36.5% to 13.2%), while that of inorganic application changed very little among aggregates (from 14.1% to 10.0%). The fertilizer effects on soil aggregation and aggregate-associated OC divergently responded to the gradients of major agronomic conditions (i.e. climate, soil properties, and duration). Organic fertilizer applications tended to have distinctly greater promotion effect than solely inorganic fertilizer applications with temperate climate, neutral-to-alkaline pH and more sand-like texture of soil. The importance of mineral- rather than larger size aggregate-associated OC in contributing to the bulk SOC pool tended to increase in the long term. The inorganic-organic combinations exhibited the most lasting effect on SOC accrual. In conclusion, the responses of bulk soil C to fertilizer applications were not always in accordance with those of soil aggregation, but can be well explained when jointly considering soil aggregate C. Our findings highlight the varying contributions of aggregates to the soil C pool in diverse and complicated agronomic situations, which are important to the agricultural C sink stability.

Effect of Rabbit Urine Bio Fertilizer and NPK on Vegetative Variables of Sorghum (Sorghum bicolor L.)

Sorghum (Sorghum bicolor L.) is a plant that requires more N nutrients than other nutrients. The abundance and affordability of rabbit urine bio fertilizer can reduce the cost of cultivation production inputs due to the high price of inorganic fertilizers. Rabbit urine contains higher N nutrients compared to other livestock urine. This study aims to obtain a combination of Rabbit Bio Urine (BUK) fertilizer concentration and NPK fertilizer dosage that can give the best results on the growth of sorghum plants (Sorghum bicolor L.). The research method used is a non-factorial Randomized Group Design (RAK) consisting of 6 levels, namely: P1 (BUK 0 ml/L + 100% NPK), P2 (BUK 41 ml/L + 80% NPK), P3 (BUK 27 ml/L + 80% NPK), P4 (BUK 18 ml/L + 80% NPK), P5 (BUK 9 ml/L + 80% NPK), and P6 (BUK 5 ml/L + 80% NPK). The application of rabbit bio urine fertilizer gives a real effect on the parameters of plant height and stem diameter at the age of 36 HST and 42 HST. In the parameter of the number of leaves, rabbit bio urine fertilizer and NPK gave no significant effect at all observation times. The P2 treatment (BUK 41 ml/L + NPK 80%) gave the highest results in the parameters of plant height at the age of 36 HST and 42 HST which amounted to 98,1 cm and 123,7 cm. In the parameter of stem diameter, the highest result was obtained by P1 (BUK 0 ml/L + NPK 100%) which amounted to 14,8 mm. Keywords : N Nutrient, Rabbit Urine Bio Fertilizer, Sorghum

Investigating the Influence of Inorganic and Organic Fertilizers on the Growth and Yield of Three Varieties of Okra (&lt;i&gt;Abelmoschus esculentus&lt;/i&gt;)

Fertilizers play an important role in enhancing crop yield, growth, and fertility of the soil. This research was conducted at the Faculty of Agriculture teaching and research farm, University of Port Harcourt, Nigeria to investigate the influence of inorganic fertilizer (urea) and organic manure (spent mushroom substrate and poultry manure) on the yield and growth parameters of three okra cultivars (Clemson Spineless, Perkin Long Pod and the Local Assertion). The urea was applied at the rate of 4g per 10kg of soil, while spent mushroom substrate and poultry manure were applied at the rates of 200g and 150g per 10kg of soil respectively at 4 weeks after planting. The treatments were laid in a completely randomized design (CRD) with 3 replications. The results revealed that the okra cultivars responded positively to both organic manures when compared with urea and the control group where no fertilizer was applied. Furthermore, varieties grown with poultry manure generally had the highest fresh fruit weight, plant height, fruit length, number of fruits, and fresh fruit yield. Spent mushroom substrate influenced the number of fruits and fruit yield while urea influenced the leaf area, number of leaves, and leaf area index. Poultry manure was recorded as the best organic manure for okra growth and yield and is recommended to be used to grow okra plants. Also, the Perkin Long Pod variety is recommended to be the best for cultivation.

Utilisation of Cow Faeces as a Base Material to Making Bokashi Fertiliser to Increase Farmers Income in Balai Hamlet, Taram Village, Harau District

The application of technology in agriculture aims to increase food production through the substitution of traditional farming systems with modern farming systems by utilising more advanced technology. This has an impact on the use of chemical fertilisers and pesticides, which can cause environmental damage and ultimately reduce agricultural productivity. Processing cow dung into organic fertiliser for crops is an applied technology in the framework of implementing zero waste farming technology. One of the benefits that can be obtained is increased income by reducing the cost of artificial fertiliser needs. Cow faeces as cattle farming waste has not been optimally utilised. Cow faeces are usually piled up by farmers behind or near the cowshed, causing a strong smell (air pollution). The results of the activity of making cow feces bokashi organic fertiliser are very beneficial for farmers as a substitute for inorganic fertiliser; The creation of clean cowshed conditions, and environmentally friendly rice fields.

Assessment of Poultry Manure and Inorganic Fertilizers Influences on the Growth and Yield of Maize (Zea mays L.)

Assessment of Poultry Manure and Inorganic Fertilizers Influences on the Growth and Yield of Maize (Zea mays L.)

Effect of Integrated Application of Vermicompost and Inorganic Fertilizers on Yield and Yield Components of Bread Wheat in Adami Tulu Jido Kombolcha District of East Showa Zone, Ethiopia

A field experiment was conducted at Adami Tulu Agricultural Research Center during 2022 cropping season to evaluate the responses of vermin compost and inorganic fertilizers on bread wheat (Triticum aestivum). The experiment consists of eight treatments: T1= Control (without fertilizer), T2=50% RNP+4t/ha VC, T3= 50% RNP+ 8t/ha VC, T4=100% RNP, T5= 4t/ha VC, T6= 8t/ha VC, T7= 100% RNP+ 4t/ha VC, T8=100% RNP+8t/ha VC. The result revealed that grain yield affected by combined application of these two fertilizes. There are gradual changes in some major soil parameters have statistically affected by combined application of vermin compost and inorganic fertilizer. Accordingly maximum grain yield (4596.3kg/ha) was recorded from T2 where 50% recommended NP+4t/ha VC where as the lowest grain yield (2109.3kg/ka) was from control plot. Lastly partial budget analysis was also calculated to determine best treatment combination for future farther use. Accordingly maximum net benefit (155,870.50ETB) was obtained from T2 where 50% recommended NP+4t/ha VC was combined. Therefore this treatment was used as best treatment combination for this area, for this crop, it needed for large scale soil fertility management and increasing land productivity.

Effect of Integrated nutrient management practices on nutrient uptake, yield and quality of improved black kavuni rice variety (CO57)

The rising demand for high-quality rice and rice products motivates farmers to produce traditional rice varieties. Rice production needs to be substantially increased with suitable nutrient management practices to meet the demand. Hence, the present study was carried out to evaluate the influence of integrated nutrient management practices on nutrient yield and quality of improved black kavuni rice. The research was conducted during the Early kar (April-August 2023) and Late samba (September - January 2023-24) seasons in a randomized block design (RBD) with three replications and twelve treatments consisting of N in equivalent basis with organic manure and inorganic fertilizers and one control. Based on an N equivalent basis, the required quantity of inorganic fertilizer, farmyard manure (FYM), vermicompost (VC) and poultry manure (PM) were applied to rice. Observations on nutrient uptake, yield and quality were recorded, and the data were analyzed using LSD at a 5% probability level for significance differences. The results revealed that higher nutrient uptake, yield and quality parameters of rice were recorded with 50% recommended dose of nitrogen through inorganic fertilizer + 50% recommended dose of nitrogen through VC + foliar spray of 0.5% ZnSO4 &amp; 1% FeSO4 at tillering, panicle initiation (PI) and flowering stage (T11).