The study investigated the effects of different treatments on wheat phenology, specifically emergence, days to anthesis, and days to physiological maturity. The data revealed that poultry manure compost (PMC), zinc (Zn), and bio-organic fertilizer (BMO) had varying effects on wheat growth stages. The study found that PMC and Zn levels did not significantly affect wheat emergence. This is in line with previous research by Nguyen et al. (2020), who reported that the application of poultry manure did not have a significant impact on wheat emergence.The application of BMO, PMC, and Zn levels significantly influenced the days to anthesis. These findings corroborate the study by Li et al. (2021), which reported that the application of organic fertilizers can delay anthesis in wheat. BMO, PMC, and Zn levels significantly influenced the days to physiological maturity of wheat. Similar results were reported by Ali et al. (2022), who found that the application of zinc and organic fertilizers delayed wheat maturity.
The study examined various wheat growth parameters, including the number of leaves per tiller, mean leaf area, leaf area index (LAI), plant height, and the number of non-productive tillers. The application of BMO, PMC, and Zn levels significantly affected the number of leaves per tiller. These results align with the findings of Sharma et al. (2021), who reported that organic fertilizer application increased the number of leaves per tiller in wheat. BMO, PMC, and Zn levels had a significant impact on the mean leaf area of wheat. This is consistent with the research conducted by Yadav et al. (2022), who reported that organic fertilizers enhanced the leaf area in wheat.The application of BMO, PMC, and Zn levels significantly influenced the leaf area index of wheat. Similar results were reported by Singh et al. (2020), who found that organic fertilizers increased the LAI in wheat crops. BMO, PMC, and Zn levels had a significant impact on wheat plant height. These findings are consistent with the study by Kumar et al. (2021), who reported that organic fertilizers increased the height of wheat plants. BMO, PMC, and Zn levels did not significantly affect the number of non-productive tillers in wheat. These results are in agreement with the research by Patel et al. (2022), who reported that organic fertilizers had no significant impact on non-productive tillers in wheat.
The study analyzed various yield components of wheat, including the number of productive tillers per square meter, the number of grains per spike, and the thousand grains weight (TGW). BMO, PMC, and Zn levels had a significant impact on the number of productive tillers per square meter. These results are supported by the findings of Sharma and Singh (2023), who reported that the application of organic fertilizers increased the number of productive tillers in wheat.The application of BMO, PMC, and Zn levels significantly influenced the number of grains per spike in wheat. Similar results were reported by Sahoo et al. (2023), who found that organic fertilizers and zinc application increased the number of grains per spike in wheat. BMO, PMC, and Zn levels had a significant impact on the thousand grains weight of wheat. These findings align with the research conducted by Mishra et al. (2022), who reported that organic fertilizers and zinc application increased the TGW in wheat.
The results presented in Table 12 demonstrate the significant influence of compost (BMO), poultry manure sources (PMC), and zinc levels on the biological yield (BY) of wheat. The application of BMO positively impacted the BY, resulting in a higher yield compared to plots without BMO. Among the poultry manure treatments, urea-treated plots (UTPMC) showed the highest biological yield, followed by urine-treated plots (URTPMC), emphasizing the importance of organic fertilizers. Additionally, the application of zinc at higher levels (15 and 10 kg/ha) resulted in increased BY, underlining the role of Zn supplementation. The interactions between control × rest, PMC × Zn, BMO × Zn, BMO × PMC, and BMO × PMC × Zn further highlight the combined effects of these factors on wheat biological yield.
Moving to grain yield (GY), as presented in Table 13, BMO, poultry manure sources, and zinc levels significantly influenced the GY of wheat. The use of BMO led to higher grain yield compared to plots without BMO, indicating its positive impact on productivity. Among the poultry manure treatments, urea-treated plots (UTPMC) demonstrated the highest GY, followed by urine-treated plots (URTPMC), suggesting the importance of incorporating organic matter into soil management practices. Similarly, higher zinc levels (15 and 10 kg/ha) positively affected GY, emphasizing the significance of Zn supplementation for optimizing yield. The interactions between PMC × Zn and BMO × PMC further confirm the importance of these factors in maximizing wheat grain yield.
Furthermore, the harvest index (HI) of wheat, as shown in Table 14, was strongly influenced by BMO, poultry manure sources, and zinc levels. Treated plots, including those with BMO, exhibited higher HI compared to untreated plots, indicating the beneficial impact of these interventions on crop productivity and resource allocation. Among the poultry manure treatments, urea-treated plots (UTPMC) and urine-treated plots (URTPMC) achieved higher HI values, highlighting the importance of organic fertilizers in enhancing yield efficiency. Similarly, higher zinc levels (15 and 10 kg/ha) were associated with increased HI, indicating their role in promoting better grain-to-biomass allocation. The interactions between PMC × Zn and BMO × PMC × Zn further underscore the combined effects of these factors on optimizing wheat
In conclusion, the findings emphasize the significance of PMC, BMO, and zinc levels in improving grain yield, biological yield, and harvest index in wheat crops. Incorporating PMC as organic amendment to the soil can contribute to enhanced productivity and resource utilization, thereby supporting food security efforts. Because compost plays a crucial role in improving wheat yield and productivity due to its numerous beneficial effects on soil health and plant growth. Here are some key reasons why compost is important for enhancing wheat production:
Nutrient Supply
Compost is a rich source of organic matter and essential nutrients such as nitrogen, phosphorus, potassium, and micronutrients. When added to the soil, compost releases these nutrients gradually, providing a steady and balanced supply to the wheat plants throughout their growth stages. This ensures that the crop has access to the nutrients it needs, leading to healthier plants and improved yield (Khalid et al., 2018; D'Amico & Frantz, 2019).
Enhanced Soil Structure
Compost improves soil structure by promoting aggregation and reducing soil compaction. It enhances the soil's ability to retain water and allows better aeration, which creates an optimal environment for wheat root growth. Improved soil structure also facilitates root penetration, leading to better nutrient and water uptake by the plants (Cavigelli & Dao, 2019; Bary et al., 2018).
Water Retention and Drought Resistance
Compost increases the water-holding capacity of the soil. In regions with limited water availability or during dry spells, soil amended with compost can retain moisture for longer periods. This helps wheat plants withstand drought conditions and reduces water stress, leading to more stable yields even in challenging environments (Zhang et al., 2017; López-Bellido et al., 2021).
Suppression of Diseases and Pests
Compost contains beneficial microorganisms that can help suppress harmful pathogens in the soil. These microorganisms can protect wheat plants from diseases, reducing the need for chemical pesticides. Additionally, healthy and vigorous plants resulting from compost application are better equipped to withstand pest attacks (Litterick et al., 2004; Kowalska et al., 2019) .
pH Regulation
Compost can help buffer soil pH, making it more stable and less prone to drastic changes. Maintaining the right soil pH is crucial for optimal nutrient availability to wheat plants. Compost helps prevent soil pH from becoming too acidic or alkaline, ensuring that essential nutrients remain accessible to the crops (Cambardella & Elliott, 1993; Khattak & McNeil, 2019).
Reduced Environmental Impact
Compost is an eco-friendly option for enhancing soil fertility and crop productivity. By recycling organic waste materials, composting helps reduce the amount of waste sent to landfills, thus minimizing greenhouse gas emissions. It also promotes sustainable agriculture by reducing the need for synthetic fertilizers, which can have adverse environmental effects (Bernal-Vicente & Ros, 2018).
Long-Term Benefits
Continuous use of compost over the years can lead to cumulative improvements in soil health and fertility. As the organic matter content increases, soil biodiversity thrives, and overall soil ecosystem health improves. This creates a positive feedback loop that benefits wheat crops and the environment in the long run (Alburquerque et al., 2014; Ranjan & Verma, 2016; )..
In summary, compost application is a valuable practice for wheat farmers, as it enriches the soil with nutrients, improves soil structure, enhances water retention, supports disease and pest management, and promotes sustainable agricultural practices. By harnessing the power of compost as organic fertilizer along with bio and chemical fertilizers, farmers can achieve higher wheat yields, improve productivity, and contribute to food security and environmental sustainability (Gutiérrez-Miceli et al., 2008; Nigussie et al., 2016; Kumar et al., 2019. Mahanta et al., 2019; Mahmoudi et al., 2017).
Zinc plays a crucial role in enhancing wheat yield and productivity by influencing various physiological and biochemical processes in plants. It is an essential micronutrient required for proper growth, development, and functioning of wheat crops. Zinc is involved in numerous enzymatic activities, including the synthesis of plant growth regulators, protein synthesis, and carbohydrate metabolism. It is particularly critical for processes such as photosynthesis, seed germination, root development, and pollen formation. Adequate zinc availability ensures optimal nutrient uptake, nutrient transport, and utilization in wheat plants. Zinc deficiency in wheat crops can lead to various growth abnormalities and yield losses. It can result in stunted plant growth, reduced tillering, delayed flowering, and poor grain development. Zinc deficiency also affects the overall health and vigor of wheat plants, making them more susceptible to diseases and pests. Therefore, maintaining optimal zinc levels in the soil is vital for maximizing wheat yield and productivity (Amanullah et al., Cakmak et al., 2010).
By ensuring sufficient zinc availability in the soil, either through soil amendments or foliar applications, farmers can alleviate zinc deficiency and improve wheat yield. Proper zinc management strategies can enhance nutrient uptake, promote healthy plant growth, increase resistance to stresses, and ultimately contribute to higher wheat productivity. Integrating zinc supplementation with other agronomic practices, such as compost application and biofertilizer use, can further enhance the positive effects on wheat yield and overall crop performance (Amanullah et al., .
Beneficial microbes (BMO) or bio-fertilizers, which are microbial inoculants containing beneficial microorganisms, have been recognized as effective tools for enhancing wheat yield and productivity. These microorganisms, such as nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and plant growth-promoting rhizobacteria, play a crucial role in nutrient mobilization and uptake, disease suppression, and overall plant health. When applied to wheat fields, biofertilizers establish symbiotic relationships with the crop, leading to improved nutrient availability and utilization, as well as enhanced stress tolerance (Egamberdiyeva & Höflich, 2003; Hussain et al., 2014). By incorporating biofertilizers in wheat cultivation, farmers can reduce their reliance on chemical fertilizers, minimize environmental pollution, and promote sustainable agriculture practices. The combined use of compost and biofertilizers can further synergize their positive effects, leading to improved soil health, higher nutrient availability, disease suppression, and ultimately, increased wheat yield and food productivity. These sustainable practices not only ensure food security but also contribute to long-term environmental and economic benefits (Amanullah et al., Tahir et al., 2019).