TAILIEUCHUNG - Balanced crop nutrition: Fertilizing for crop and food quality

Balanced fertilization is significant in reducing pest and disease infestation, which results in higher returns through larger yields and better quality. Finally, the economic benefit from site-specific nutrient management practices is demonstrated for Souteast Asia's farmers. | Turk J Agric For 32 (2008) 183-193 © TÜB‹TAK Balanced Crop Nutrition: Fertilizing for Crop and Food Quality Hillel MAGEN* International Potash Institute, POB 569, CH-8810 Horgen - SWITZERLAND Received: Abstract: Globally the ratio of N:P2O5:K2O changed from in the 1980s to in 2002 as N consumption outstripped that of K. Regardless of their decreased nutrient consumption, developed countries maintained a modest increase in agricultural production. Positive and similar growth rates for agricultural products and nutrient consumption prevail in developing countries, but with the use of a 35% higher nitrogen (N) to potassium (K) ratio than in developed countries. The outcome of a negative K balance is presented here using examples from India, China, Egypt, and Bulgaria. Reasons for a negative K balance stem mostly from farmers’ lack of knowledge and socio-economic factors. Maintaining a negative K balance results in decreased soil fertility and stagnating and even decreasing productivity. Balanced and timely application of nutrients needs to be demonstrated through different parameters according to the prevailing agro-climatic conditions. Results from long-term experiments and intensive investment in educational activities play an important role in demonstrating the benefits of balanced fertilization. In contrast, when analyzing nutrient applications in organic agriculture, it appears that often these may not be sufficient to meet a crop's requirement in quantity and time of application and hence creating soil nutrient mining and pollution. Balanced fertilization is significant in reducing pest and disease infestation, which results in higher returns through larger yields and better quality. Finally, the economic benefit from site-specific nutrient management practices is demonstrated for Souteast Asia's farmers. Key Words: Potassium, nutrient ratio, negative balance, balanced fertilization How common is unbalanced .

• Nông nghiệp
• Nutrient ratio
• Negative balance
• Balanced fertilization
• Agricultural production
• Site specific nutrient management practices
• Soil nutrient
• Growth pattern
• Nutrient use ratio
• Nutrient harvest index
• Nutrient management in pearlmillet
• Nutrient management
• Water quality
• Stable isotope ratio
• Stable isotopes ratio combined
• Nitrogen nutrient sources
• Aquatic environment
• Nutrient maize
• Row ratio and fertility level
• Fertility level on nutrient uptake
• Maize soybean intercropping system
• Soybean intercropping system
• Economics and B C ratio
• Nutrient management practices
• Productivity of hybrid maize
• Combination of gypsum
• Borax under different nutrient management practices
• B C ratio and grain yield
• Economics of late sown kharif maize
• Different nutrient management practices
• Economics of maize as influenced
• Net returns
• B:C ratio
• Economics of rice
• Integrated nutrient management on yield
• Integrated nutrient management
• Annual chrysanthemum
• Phosphate solubilizing bacteria
• Cost benefit ratio
• Flowering and yield parameters
• Inorganic fertilizers
• Chlormequat chloride
• Harvest index
• Net return
• BC ratio
• Soybean (Glycine max)
• Yield target
• Nutrient management techniques
• Field pea crop cultivation
• Irrigated condition
• Irrigation methods
• Nutrient sources
• Leaf stem ratio
• Nutrient uptake
• Fodder quality
• Kinnow mandarin
• Organic nutrient sources
• Kinnow mandarin cultivation
• Economic evaluation
• Indian mustard
• B C ratio
• Indian Mustard (Brassica juncea L )
• Economics of Indian Mustard
• Yield attributes
• Response of wheat cultivars
• Yield of wheat
• Benefit cost ratio
• Economics of cauliflower
• Carbon stock
• Plant growth parameters
• Integrated nutrient management practices
• Sulphur nutrient
• IW/CPE ratio
• Moisture regimes on growth
• Productivity of wheat
• Wheat varieties
• Early childhood caries
• Nutrient deficiency
• Sub urban population in Nigeria
• Adjusted prevalence ratio
• Non significant risk indicators
• RiceGingelly Maize
• Cropping system yield
• System return
• Integrated farming system
• Irrigation scheduling
• NPK uptake
• Protein content
• Quality parameter
• Yield response
• Soil biomass carbon
• Nitrogen and phosphorous
• Phosphatase and Urease activities etc
• Wastewater treatment
• Nitrogen recovery
• N P ratio
• Spirulina cultivation
• Piggery wastewater
• Pollutant removal
• Environmental advances
• Pollution of nitrate
• Health risks assessment
• Phosphate concentrations
• Water bodies
• Nutrient pollution
• Nitrate to phosphate ratio