Integrated Nutrient Management Research Articles

Towards Sustainable Agriculture: Integrating Agronomic Practices, Environmental Physiology and Plant Nutrition

Sustainable agriculture aims to meet the growing global demand for food without compromising environmental integrity. This review paper explores the integration of agronomic practices, environmental physiology, and plant nutrition as pathways toward sustainable crop production. Intensive agricultural practices have led to significant problems such as soil degradation, loss of biodiversity, and environmental pollution. Recent advancements in plant physiology have enhanced our understanding of plant growth and response to biotic and abiotic stresses. Optimizing crop production in a sustainable manner depends on insights into key processes like photosynthesis, water use efficiency, and nutrient uptake. This review discusses the role of plant growth-promoting microorganisms (PGPMs) as biofertilizers, providing an alternative to harmful agrochemicals. PGPMs can improve soil health and promote plant growth when applied to soil, seeds, or plant surfaces, reducing reliance on synthetic fertilizers and pesticides. Additionally, nanotechnology in agriculture is examined, illustrating how nanomaterials (NMs) and nano-based fertilizers can enhance nutrient absorption and increase crop yields. Beyond these scientific approaches, there is an urgent need to implement novel agricultural practices that support sustainability. The world population is growing at a disquieting rate, placing tremendous pressure on natural resources. This threatens future generations' access to nutritious food and clean air. Innovative approaches like climate-smart agriculture, organic farming, biodynamic agriculture, sustainable intensification, and regenerative agriculture, along with practices such as integrated farming systems, precision agriculture, integrated nutrient management, and integrated pest management, have proven to safeguard agricultural sustainability. By integrating these innovative approaches and practices, it is possible to meet the increasing demands for food while preserving the environment.

Organic Farming vs. Integrated Nutrient Management: A Comparative Review of Agricultural Productivity and Sustainability

In an era where sustainable agriculture is crucial for global food security and environmental preservation, organic farming and Integrated Nutrient Management (INM) have emerged as leading practices. This review paper offers a comprehensive comparison of these two approaches, focusing on their impact on agricultural productivity and sustainability. Organic farming, with its emphasis on reducing the use of chemical fertilizers, pesticides, growth hormones, and feed additives, aligns closely with the principles of sustainability. It enhances food quality, promotes soil health, and mitigates adverse environmental effects by encouraging natural recovery cycles. However, organic farming's limitations, such as lower yields and a more labour-intensive approach have prompted interest in innovative solutions that blend organic practices with modern technologies. Integrated Nutrient Management (INM) presents a compelling alternative. By combining organic, inorganic, and biological nutrient sources, INM seeks to optimize nutrient use efficiency and maintain soil health. This approach offers a flexible nutrient management strategy, balancing organic and inorganic inputs to maintain crop productivity while reducing environmental impact. Studies have shown that INM can improve soil properties, such as bulk density, porosity, and water-holding capacity, leading to enhanced crop yields and lower greenhouse gas emissions. The paper explores how INM's integrated approach not only stabilizes crop production but also supports the growth of soil microbes, providing a source of energy and organic carbon. By using a combination of specific microorganisms, organic matter, and minimal doses of inorganic fertilizers, INM can achieve a harmonious balance that reduces environmental pollution and ensures long-term soil fertility. Ultimately, this review underscores the potential of combining organic and INM practices to create a sustainable and productive agricultural system. Through a comparative analysis, the paper aims to guide researchers, policymakers, and farmers towards adopting strategies that foster agricultural sustainability without compromising productivity.

Yield Maximization of Rice (Oryza sativa) through Integrated Nutrient Management

This experiment was conducted on a permanent layout at the west byde of BRRI farm, Gazipur during T. Aman 2019 to Boro 2021-22 to find out the suitable management practices for yield maximization of rice and soil health. Seven treatments in Randomized Complete Block (RCB) Design with three replications were imposed and each treatment was assigned in 5m × 4m sized plot. The treatments combinations were T1= Absolute Control (No nutrient supply), T2 = BRRI dose N-P-K-S@83-17-53-12 kg ha-1 in T. Aman and 138-21-75-21 kg ha-1 in Boro season, T3= Soil Test Based (STB) Fertilizer Dose N-P-K-S @ 67-10-40-10 kg ha-1 in T. Aman and 134-16-75-10 kg ha-1 in Boro, T4 = STB dose + 1 t ha-1 Cowdung, T5 = STB dose + 1 t ha-1 Poultry manure, T6 = STB dose + 1 t ha-1 Vermicompost and T7 = STB dose + 0.33 t ha-1 CD + 0.33 t ha-1 PM + 0.33 t ha-1 VC. Thirty-days old seedling of BRRI dhan87 in T. Aman and fourty-two days old seedling of BRRI dhan89 in Boro season were transplanted at 20 cm × 20 cm spacing in both seasons. All manures, soil and plant samples analysis were done by the help of soil Science Division BRRI, Gazipur. Initial soil (0-15 cm depth) properties were: soil texture, clay loam; pH, 6.94; organic Carbon, 1.59%; Nitrogen, 0.18%; Phosphorus, 21.88 ppm and Potassium, 0.19meq/100g soil. Thirty days old seedling of BRRI dhan87 in T. Aman and 42 days old seedling of BRRI dhan89 in Boro season were transplanted at 20cm x 20cm spacing. Grain yield, tiller number, panicle number, plant height and grain number were significantly affected by the different integrated nutrient management during both T. Aman and Boro season. Grain yield, tiller number, panicle number, plant height and grain number were significantly affected by the different nutrient management in both T. Aman and Boro season. Poultry manure related treatments and BRRI recommended dose performed better than the others in all the parameter except 1000-grain weight. On the other hand, Absolute Control (No nutrient supply) produced the lowest result. Every parameter, Poultry manure treatments have been performed the best. STB dose with one t ha-1 poultry manure is better for maximization of rice yield.

Effects of integrated nutrient management and fertilizers on the yield of baby corn in Punjab's climatic context

The combined impacts of climate change and increased chemical fertilizer use are diminishing soil fertility, thereby reducing agricultural productivity and farmland yield potential. This study investigates the effect of integrated nutrient management on baby corn. Results showed that the highest cob length (14.28 cm) and green fodder yield (45.56 t ha-1) were achieved using elevated levels of nitrogen (160 kg ha-1) and phosphorus (120 kg ha-1), supplemented with zinc (6 kg ha-1) and Azotobacter. Soil nutrient availability was assessed, indicating that treatment with 160 kg N + 100 kg P + 6 kg Zn + Azotobacter results in available nitrogen levels of 277.2 kg ha-1 and the highest organic carbon content (0.26%). Available phosphorus content (ranging from 24.1 to 24.3 kg P ha-1) is observed with 120 kg P. Nutritional quality parameters were also influenced by nutrient levels, with the treatment of 160 kg N + 120 kg P + 6 kg Zn + Azotobacter showing the highest total soluble solids (11.2% brix) and protein content (17.9%). The treatment of 140 kg N + 100 kg P + 6 kg Zn exhibits the maximum fiber content (26.5%). In summary, the study underscores the positive impact of biofertilizers and zinc on fodder yield and soil properties. Integrating biofertilizers and micronutrients is recommended for sustaining agriculture and maintaining soil health over the long term.

Rabi groundnut (Arachis hypogaea) yield in different agro-ecologies of eastern India: Factors analyses

Improving edible oilseed production is a need of the hour to ensure food security in India. Numerous efforts were made to fasten these efforts, including implementation of Cluster Frontline Demonstration (CFLDs). In this initiative, the groundnut crop has also been promoted in various parts of India in the form of CFLD under different agro-ecological zones of eastern India through the lead taken up by Krishi Vigyan Kendra, the Farm Science Centre (KVK) of Odisha and West Bengal. The assessment aimed at underlying the relative importance of the factors affecting the groundnut (Arachis hypogaea L.) yield in this region. A study was carried out in the winter (rabi) season 2018–22, revealed that the application of improved technologies, namely seed treatment, use of biofertilizers, Integrated Nutrient Management (INM), Integrated Pest Management (IPM), irrigation etc. increased groundnut yield to the tune of 46.83%. The benefit-cost ratio of demonstrated plot was much higher (2.04) against the traditional practices (1.63). Further, seed treatment, application of bio-fertilizer, and Integrated Nutrient Management (INM) were the major determinants behind enhancement of groundnut yield. These critical factors can significantly contribute towards augmenting the yield of groundnut followed by enhancing the profitability of farmers, besides addressing the agroecological challenges in different agro-ecological zones of eastern India.

Microbial population and yield of rice–wheat system under variable irrigation and nutrient management

A field experiment was conducted during rainy (kharif) season of 2018–19 and winter (rabi) season of 2019–20 at the Water Management Research Farm of CSK Himachal Pradesh Agricultural University, Palampur, Kangra, Himachal Pradesh to study the effect of moisture and nutrient management practices on different soil microbial entities and crop yields in rice (Oryza sativa L.)–wheat (Triticum aestivum L.) system. Experiment was laid out in a split-plot design with 3 replications. Treatments comprised of 3 irrigation levels, viz. Recommended critical stages regimes; Irrigation at 0.8 CPE (cumulative pan evaporation) (rice) and 0.6 CPE (wheat); Irrigation at 1.0 CPE (rice) and 1.0 CPE (wheat) assigned to main-plots and 4 nutrient management practices, viz. Inorganic; Organic; Natural farming; and Integrated management allotted to sub-plots. Irrigation at critical stages resulted in significantly higher rice yield, bacterial, azotobacter, phosphate solubilizing bacteria (PSB), actinomycetes population. However, fungi population increased under higher moisture regimes. In case of wheat crop, irrigation at 1.0 CPE resulted in a significantly higher yield (7.5% higher over irrigation at critical stages) in both the years of study. Organic and integrated nutrient management practices being statistically at par with each other recorded significantly higher microbial population. A significantly higher fungi population was, however, recorded with natural farming. The highest crop yields were obtained with integrated nutrient management (3.4 t/ha rice and 3.6 t/ha wheat in second year). The best combination for rice was irrigation at critical stages along with integrated nutrient management. Whereas, for wheat irrigation at 1.0 CPE with same nutrient management proved to be the best. Hence it is recommended to follow integrated nutrient management and irrigation at critical stages in rice and at 1.0 CPE in wheat for higher productivity as well as for improved biological properties of soil.

Demonstration of Integrated Nutrient Management Practices on Yield, Yield Attributes and Economics of Pomegranate (cv. Bhagwa) in Arid Zone of Andhra Pradesh

Integrated Nutrient Management (INM) demonstrations on pomegranate were conducted in 20 farmer fields in Krishi Vigyan Kendra, Kalyandurg-operated mandals of Ananthapur district in Andhra Pradesh state during 2022-23 and 2023-24. The aim was to demonstrate the influence of INM practice on enhancing yield attributing features, yield and economics in farmer fields. According to the data, INM practice resulted in a larger number of flowers/plants, fruits/plant, fruit setting percentage, average fruit weight and yield/plant than farmer’s practice, who used chemical nutrient management alone. The demonstration of INM practice resulted in 11.56% and 10.52% higher fruit output than farmers' practices in 2022-23 and 2023-24, respectively. The enhanced yield in INM practice can be attributed to more fruits per plant and heavier fruit weight. INM approaches also provided a greater economic advantage, and their adoption resulted in a better benefit-cost ratio (5.87) than farmers' use of inorganic nutrient management (5.40). From the findings It can be concluded that, under current circumstances, adopting INM practices in pomegranate cultivation could result in a higher economic benefit than farmers' practices, encouraging more farmers to adopt INM practices not only in pomegranate but also in other major fruit crops in Ananthapur district of Andhra Pradesh.

Integrated Nutrient Management in Muskmelon: A Comprehensive Field Study

The present study aims to describe the effects of integrated nutrient management (INM) on Madhumita variety of muskmelon cultivation in terms of plant growth, fruit yield, and quality. The experiment has been carried out in the crop field located in the North Konkan region of Maharashtra, India. This case study involved seven different treatments (T1 to T7), each with varying nutrient application regimes. Certain observational data, such as vine length, number of leaves per plant, leaf length, days to 50% flowering, number of fruits per plant, fruit length, fruit width, fruit weight, and fruit yield, were recorded for three replications over the course of the experiment. The results of statistical analysis revealed significant differences, with specific treatments demonstrating T6, which included Vermicompost at 5 tons/ha, 75% of the recommended dose of fertilizers (RDF), and 1% NOVEL prime organic liquid nutrient, consistently outperformed the other treatments groups. The findings highlight the utility of integrated nutrient management. It helps in understanding and optimizing the application of nutrients to boost crop productivity and promote sustainability.

Physiological growth parameters, yield and quality of maize (Zea mays L.) as influenced by integrated nutrient management in intercropping system with green gram (Vigna radiata L.) under Island Ecosystem, A & N Islands

Physiological growth parameters, yield and quality of maize (Zea mays L.) as influenced by integrated nutrient management in intercropping system with green gram (Vigna radiata L.) under Island Ecosystem, A & N Islands

Effect of sowing schedule and integrated nutrient management on productivity, profitability and soil health in rainfed baby corn (Zea mays)–horse gram (Macrotyloma uniflorum) cropping sequence

A field experiment was conducted during the rainy (kharif) seasons of 2012 and 2013 at Ambikapur, Chhattisgarh, to work out the effect of sowing schedule and integrated nutrient-management systems on the pro ductivity and profitability of baby corn (Zea mays L.)–horse gram [Macrotyloma uniflorum (L.) Verdc.] cropping sys tem. The experiment was laid out in a split-plot design with 4 treatments of sowing schedule (1st week of July, 2nd week of July and 3rd week of July and 4th week of July) in main plots and 4 levels of fertility (Recommended dose of fertilizer (RDF), 125% of RDF, RDF + 5 t FYM, 125% of RDF + 5 t FYM) with 3 replications. The horse gram was taken as utera crop sown just before harvesting of baby corn of each sowing schedule by using common starter dose (20-50-20 kg N-P-K/ha). Baby cob, baby corn, green fodder of baby corn plants, horse gram yield and economics were higher in sowing of first schedule (1st week of July) which showed parity with second (2nd week of July) and third (3rd week of July) sowing schedule but significantly superior to the fourth sowing schedule, i.e. 4th week of July. Further, application of 125% RDF + 5 t FYM significantly increased the baby cob, baby corn, green fodder, horse gram yield over 100% RDF and125% RDF, but was at par with that obtained with 100% RDF + 5 t FYM. Combined effect of sowing of the first schedule of baby corn and horse gram and application of 125% RDF + 5 t FYM resulted in significantly higher baby corn-equivalent yield in terms of system productivity (2.8 t/ha) which was comparable to sowing of the second schedule with 125% RDF + 5 t FYM (2.7 t/ha), sowing of the third schedule with 125% RDF + 5 t FYM (2.3 t/ha), sowing of the first schedule with 100% RDF + 5 t FYM (2.7 t/ha), sowing of the second schedule with 100% RDF + 5 t FYM (2.5 t/ha) and sowing of the first schedule with 125% RDF (2.5 t/ha). Hence sowing of baby corn on the first schedule (1st week of July) with 125% RDF + 5 t FYM fol lowed by horse gram revealed the maximum system productivity in terms of baby corn-equivalent yield (2.8 t/ha) and net profit ( 173,000/ha). As regards to nutrient management in baby corn and horse gram system, the maxi mum nutrient uptake (205.7 kg N, 35.5 kg P and 222.8 kg K/ha) and soil fertility status after final harvesting of cropping system (256.19 kg N, 9.1 kg P2 O5 and 281.00 kg K2 O/ha) were registered under 125% RDF + 5 t FYM.

Effect of integrated nutrient management on productivity and economics of wheat (Triticum aestivum)

Effect of integrated nutrient management on productivity and economics of wheat (Triticum aestivum)

A Systematic Review on Effects of Nitrogen Fertilizer Levels on Cabbage (Brassica oleracea var. capitata L.) Production in Ethiopia.

Cabbage (Brassica oleracea var. capitata L.) holds significant agricultural and nutritional importance in Ethiopia; yet, its production faces challenges, including suboptimal nitrogen fertilizer management. The aim of this review was to review the possible effect of nitrogen fertilizer levels on the production of cabbage in Ethiopia. Nitrogen fertilization significantly influences cabbage yield and quality. Moderate to high levels of nitrogen application enhance plant growth, leaf area, head weight, and yield. However, excessive nitrogen levels can lead to adverse effects such as delayed maturity, increased susceptibility to pests and diseases, and reduced postharvest quality. In Ethiopia, small-scale farmers use different nitrogen levels for cabbage cultivation. In Ethiopia, NPSB or NPSBZN fertilizers are widely employed for the growing of various crops such as cabbage. 242 kg of NPS and 79 kg of urea are the blanket recommendation for the current production of cabbage in Ethiopia. The existing rate is not conducive for farmers. Therefore, small-scale farmers ought to utilize an optimal and cost-effective nitrogen rate to boost the cabbage yield. Furthermore, the effectiveness of nitrogen fertilization is influenced by various factors including the soil type, climate, cabbage variety, and agronomic practices. Integrated nutrient management approaches, combining nitrogen fertilizers with organic amendments or other nutrients, have shown promise in optimizing cabbage production while minimizing environmental impacts. The government ought to heed suggestions concerning soil characteristics such as the soil type, fertility, and additional factors such as the soil pH level and soil moisture contents.

Effect of integrated nutrient management on growth, yield, quality and soil health of spring planted sugarcane (Saccharum officinarum) in West Bengal

An experiment was carried out during 3 consecutive cropping seasons of 2013–14, 2014–15, and 2015–16 at Bethuadahari, Nadia, West Bengal to evaluate the effect of organic manure and biofertilizers in combination with inorganic fertilizer as the source of nitrogen (N) on growth, yield attributes, cane yield, juice quality, leaf nutrient and chlorophyll content, and soil health after harvesting of sugarcane (Saccharum spp. Hybrid complex) (cv. CoB 94164). The experiment consist of 7 treatments, viz. T1 , control; T2 , 100% recommended dose of N through inorganic; T3 , 75% recommended dose of N through inorganic + 25% recommended dose of N through FYM; T4 , 50% recommended dose of N through inorganic + 50% recommended dose of N through FYM; T5 , T3 + Azotobacter; T6 , T3 + Azospirillum; T7 , T3 + Azotobacter + Azospirillum, respectively in a randomized block design (RBD) with 3 replications. The results revealed that, application of N through organic manure and biofertilizer along with chemical fertilizer increased growth characters, viz. leaf-area index (LAI), total dry matter (TDM), chlorophyll content and N, P, K and S concentration in leaf tissues as compared to inorganic fertilizer alone. The maximum cane yield (86.10 t/ha) and sucrose content (17.52%) were recorded under the treatment T7 (75% recommended dose of N through inorganic + 25% recommended dose of N through FYM + Azotobacter + Azospirillum). Cane yield exhibited significant positive correlation with different growth and yield attributes as well as with juice quality and vice-versa. The organic carbon, available N, P2 O5 and K2 O contents of soil increased slightly after harvest of the crop due to the incorporation of organic manures and biofertilizers in soils initially. Thus, 25% of the recommended dose of nitrogen through inorganic sources could be replaced by FYM and biofertilizers for obtaining higher sugarcane yield along with improvement of soil health status.

The effects of contour-based rainwater harvesting and integrated nutrient management on maize yields in semi-arid regions of Zimbabwe

In the smallholder farming areas located in semi-arid regions of Zimbabwe, low and unreliable rainfall distribution and poor soil fertility are the major factors limiting crop production. The negative effects of these biophysical factors have been worsened by climate change. However, the major challenges have been the lack of sustainable, low-cost water and nutrient management technologies for these semi-arid regions. The objectives of this study were to evaluate the effects of contour-based rainwater harvesting (RWH) namely tied contours (TC), infiltration pits (IP) which were compared with the standard contour (STDC), and intergrated nutrient management (INM) where cattle manure was used as basal fertiliser and Ammonium Nitrate (AN) as top dressing, on maize yields. Results showed that fields with RWH had higher yields compared to STDC. Average maize yields were 2210 and 1792 kg ha−1 for TC and IP which were 88% and 52% above STDC (1176 kg ha−1) respectively. Increasing nitrogen (N) levels resulted in a further increase in maize yields. Return on investment was negative during drier years and was significantly higher in RWH systems compared with STDC during wet seasons. Farmers need to reduce mineral fertiliser application during dry seasons since little rainwater is captured. We conclude that contour based RWH and INM can be used as sustainable low cost methods of crop production. Higher fertiliser application rates when rainfall is limiting, do not result in increased return on investiment.

Delineation of Soil Fertility Status and KVK Intervention to Improve the Productivity of Pepper in TSP Villages of Namakkal District under Soil Health Card Mission

Soil is the most important resource needed for agriculture production. The unbalanced fertilizer application associated with more production by high yield varieties affects the soil quality vulnerably. Soils of tribal areas, having multi nutrient deficiencies due to intense cropping especially spices Pepper, coffee, cardamom and banana. Balanced application of plant nutrients is thus the only option to increase soil productivity for maintaining/enhancing the overall soil productivity. Delineation of soil nutrient status is an important practice to plan the nutrient scheduling for pepper crop. Hence 100 soil samples were collected from five adopted villages and tested its properties. Based on the analytical results, soil health cards issued along with fertilizer recommendation. Then 50 farmers were selected, trained all scientific package of practices through trainings. The field experiment was conducted in 50 farmer’s field in an area of 20 ha. Pepper variety Panniyur 1 was the test crop. Application of soil test based integrated nutrient management practice increased the yield attributes and yield of pepper. An average of Rs. 74,220/ha net profit could be obtained by adopting all scientific package of practices in the farm holdings.

Productivity and Profitability of Fodder oat (Avena sativa L.) as Affected by Integrated Nutrient Management: A Review

Fodder oats (Avena sativa L.) is a valuable feed resource for livestock, providing high-quality forage rich in nutrients essential for animal health and productivity. This review summarizes the key components and benefits of integrated nutrient management in fodder oats cultivation. Organic inputs such as farmyard manure, compost, and green manure enhance soil quality while inorganic fertilizers provide essential macro and micronutrients necessary for robust crop growth and yield.Various researchers found that higher green and dry fodder yields were obtained with the application of Farmyard Manure @ 5 t/ha + 50 percent of the recommended dose of fertilizers (329.76- 518.32 q ha-1) and 75% RDF along with 2 t Poultry manure ha-1 (77.57- 91.31 q ha-1 ). While 75% recommended dose of fertilizer (RDF)+Zn + plant growth promoting rhizobacteria (PGPR)+residual farm yard manure (R-FYM) and 100%RDF + Zn + R-FYM significantly increased fodder quality traits- Crude protein (9.44-10.10%), ether extract (4.5-5%), total ash yield (33.8-34.6%), ADF and NDF. Uptake of N, K, P, S and Mn by oat crop was highest at 75% NPK+2.5t Vermicompost +10kg Mn+20kg S ha-1. Higher net returns per ha were obtained by integrated nutrient management treatment of FYM @ 5 t/ha + 50 percent of the recommended dose of fertilizers and the application of 75% RDF (60:40 NP) kg ha-1 along with 2 t poultry manure ha-1. Thus Integrated nutrient sources increased the yield and quality of fodder oat besides enhancing profitability.

Impact of Combining Microbial Enriched Organic Manures with Inorganic Nutrients on Physiological Characteristics and Productivity of Pearl Millet (Pennisetum glaucum L.)

The present investigation was undertaken to validate the integrated use of inorganic fertilizers and biofertilizers inoculated in organic manures on the physiological attributes and of pearl millet in the School of Agricultural Science, Karunya Institute of Technology and Sciences, Coimbatore, India. The experiment was laid out in Randomized Block Design (RBD) with three replications, during the rabi season of 2023-24. Results outlined that the integrated nutrient management practice of applying Azospirillum & PSB enriched vermicompost @ 6 t ha-1 + 100% Recommended dose of N, P2O5 & K2O has significantly increased the physiological attributes (leaf area index, crop growth rate, chlorophyll index), and yield (grain yield and stover yield) of pearl millet. This was statistically on par with the treatment Azospirillum & PSB enriched FYM @12.5 t ha-1 + 100% RDF dose of N, P2O5 & K2O.

Determining the Effect of Integrated Nutrient Management (INM) on Growth and Flower Yield of Tuberose (Polianthes tuberosa L.) cv. Prajwal

Determining the Effect of Integrated Nutrient Management (INM) on Growth and Flower Yield of Tuberose (Polianthes tuberosa L.) cv. Prajwal

Study of Physiological Growth Indices and Yield of Chickpea (Cicer arietinum L.) to Soil and Foliar Application Through Integrated Nutrient Management Practices

An investigation was conducted in Rabi season of 2023-24 at the instructional farm of Karunya Institute of Technology and Sciences, Coimbatore, to evaluate the performance of physiological indices on chickpeas under soil and foliar application. The experiment was established on a Factorial Randomized Block Design (FRBD). The treatments were soil application of NPK 100 percent (A1), NPK 100 percent + FYM 10 t ha-1 (A2), NPK 100 percent + Vermicompost 5 t ha-1 (A3), NPK 75 percent + FYM 10 t ha-1 (A4) and NPK 75 percent + Vermicompost 5 t ha-1 (A5) combined with foliar applications, viz., Nano-DAP (B1) and Nano-Urea (B2). The results of the study revealed that morpho-physiological attributes of chickpeas were statistically increased by the application of soil (NPK 75 percent + Vermicompost 5 t ha-1) combined with foliar (Nano-urea) nutrient management practices resulting in maximum grain yield of 15.64 q ha-1 and stover yield of 30.49 q ha-1. The results of this study underscore the importance of integrated nutrient management practices involving soil and foliar applications in enhancing the physiological indices of chickpeas.

Effect of foliar fertilization on Urospermum picroides, an indigenous plant of the traditional cretan-mediterranean diet

Urospermum picroides (L.) Scop. ex F. W. Schmidt (Asteraceae) is rich in secondary compounds, with antimicrobial and antioxidant activity, medicinal and health-promoting properties, however, like many other wild edible plants of the Mediterranean, it is still underutilised. This study focused on the pilot cultivation of U. picroides, under minimal irrigation and organic, integrated nutrient management (ΙΝΜ) fertilisation (by foliar application) in Crete, Greece, analysing its response in terms of yield characteristics and nutritional content. The foliar fertilisation treatments consisted of a control treatment (CO), a conventional water-soluble fertiliser (CV), a semi-organic nitrogen fertiliser (TR), a liquid semi-organic fertiliser (TF), and v) a mix of the conventional and semi-organic fertiliser (CF). Physiological characteristics (i.e., SPAD and Fv/Fm) were assessed during cultivation, while yield and leaf nutrient parameters were determined, at harvest. Treatments containing bioactive compounds (TF and CF) almost doubled the fresh and dry weight of U. picroides shoot compared to the control (CO) treatment (172% and 160%, respectively) which can be partially ascribed to the elevated physiological characteristics of the TF and CF fertilisation treatments. Even more, nitrogen rich treatments (CV and TR) improved yield characteristics compared to the control, but the effect was not as pronounced as that achieved by TF and CF semi-organic fertilization treatments. Our results indicate that the application of foliar semi-organic fertilization seems to be an effective alternative practice to increase photosynthetic capacity and concomitantly fresh and dry yield of U. picroides without compromising the nutritional profile of the edible product.