Effects of Time of Nitrogen Fertilizer Application on the Growth and Productivity of Rice (Oryza Sativa L) in Fogera Plain, North Western Ethiopia

Tadesse, Zelalem; Tadesse, Tilahun; Ayalew, Dereje

doi:10.20431/2454-6224.0309006

Cited by 2 publications

(1 citation statement)

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“…This may be due to continuous and gradual supply of nitrogen from CF to the plant to maintain greenness of leaves for longer period and there by increased the photosynthetic rate, greater dry matter accumulation and also more translocation of photosynthates toward sink. Differential rates and split application of nitrogen and basal application of phosphorus and potassium plays important role (Mannan et al 2014;Rohit et al 2017;Zelalem, Tilahun, and Dereje 2017). Shekhon, Kaur, and Singh (2012) also reported that application of higher dose of customized fertilizer (67% CF) produced additional grain and straw yield of wheat.…”

Section: Yield and Nutrient Uptake Of Ricesmentioning

confidence: 99%

Nutrient requirement and use efficiency of rice (Oryza sativaL.) as influenced by graded levels of customized fertilizer

Basavarajappa

Shruthi

Lingappa

et al. 2021

Journal of Plant Nutrition

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Balanced nutrient application is an important concern to minimize fertilizer use in crop culture. Field experiments were conducted during kharif 2017 and 2018 to find out the best level of NPK fertilizer for rice with two varieties of rice of same duration (130-135 days). Three grades of customized fertilizers (250, 350 and 450 kg ha À1 ) along with 100% RDF (Recommended dose of fertilizer) and absolute control constituted the treatment variables. The results revealed that the grades of customized fertilizer (CF) influenced the yield and uptake of nutrients. Application of CF @ 450 kg ha À1 was found to be significantly superior over absolute control and 100% RDF with respect to yield and uptake of nutrients, and found on par with all other grades of CF (250 and 350 kg ha À1 ). Applying 250 kg ha À1 of CF recorded higher agronomic efficiency (AE), apparent recovery efficiency (ARE) and partial factor productivity (PFP) for phosphorus (P) and potassium (K) but higher AEn, AREn and PFPn in 450 kg ha À1 of CF. The higher utilization efficiency of nitrogen (UEn) of 43.05%, phosphorus (UEp) of 181.88% and potassium (UEk) of 34.40% were recorded in 250 kg ha À1 of CF. The CF @ 450 kg ha À1 recorded higher nitrogen and phosphorus requirement (NR and PR) i.e., 2.65 and 0.61 kg's, respectively. Whereas, potassium requirement (KR) was higher in 100% RDF. Higher response yard stick (RYS) of 5.33 was recorded in 250 kg ha À1 of CF compared to other grades of CF, 100% RDF and absolute control.

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Section: Yield and Nutrient Uptake Of Ricesmentioning

confidence: 99%