subject area of Determination of optimal nitrogen rate for rice varieties using a chlorophyll meter Effect of nitrogen rates and weed control methods on weeds abundance and yield of direct-seeded rice Einfluß von NPK auf die Biomasseproduktion und Stickstoffbindung der stengelknöllchenbildenden Gründüngungsleguminosen Sesbania rostrata und Aeschynomene afraspera im Naßreisanbau Enhancing Rice Productivity through integration of Stress Tolerant Rice Varieties and Improved Nutrient Management Practices in Saline Areas of Bangladesh Genotypic variation in nitrogen use efficiency in medium- and long-duration rice Growth behaviour and leaf morphology of Philippine strains of Sphenoclea zeylanica showing differential response to 2,4‐D Identifying factors that determine kernel number in wheat. KUZEY GEÇİT BÖLGESİ BAKLAGİL-BUĞDAY SİSTEMİNDE FARKLI AZOT MİKTARLARININ GEREK-79 VE BEZOSTAYA-1 BUĞDAY ÇEŞİTLERİNİN VERİMLERİNE ETKİLERİ Methodology of fertilizer recommendation based on yield response and agronomic efficiency for rice in China Mitigating Striga hermonthica parasitism and damage in maize using soybean rotation, nitrogen application, and Striga-resistant varieties in the Nigerian savannas On-farm assessment of site-specific nutrient management for rainfed lowland rice in the Philippines On-farm evaluation of leaf color chart for need-based nitrogen management in irrigated transplanted rice in northwestern India Performance of maize—soybean intercrop combination in the tropics: Results of a multi-location study Phosphorus agronomic efficiency in maize-based cropping systems: a focus on western Kenya Recent approaches in nitrogen management for sustainable agricultural production and eco-safety SPIKE , a quantitative-trait locus, increases rice grain yield under low-yield conditions Site-specific nutrient management enhances sink size, a major yield constraint in rainfed lowland rice Soil N supply and plant N uptake by irrigated rice in Tamil Nadu Wheat nutrient response functions for the East Africa highlands Yield and Iron Toxicity Response of Rice Cultivars to Nitrogen and Phosphorus Application Rates in Lowland Ecology of Moist Savanna of Northern Nigeria