El-Taib A.B.A., A. M. Attia and Sakina R. Abazid( 2021). Impact of Bio and Inorganic Potassium and Nitrogen Fertilization on Yield and Its
Attributes of Promising Sugarcane Genotypes
Middle East Journal of Agriculture Research Volume: 10 | Issue: 01| Jan. - March| 2021
EISSN: 2706-7955 ISSN: 2077-4605 DOI: 10.36632/mejar/2021.10.1.26
Pages: 400-412
Abstract: A field experiment was conducted at Kom-Ombo Agricultural Research Station, (latitude of 24o 28′ N and longitude of 32o 57′ E at an elevation108 m above sea level), Aswan Governorate, Egypt during 2018/2019 and 2019/2020 seasons to study the effect of bio and inorganic potassium and nitrogen fertilization on yield and its attributes of some sugar cane genotypes.The study included 48 treatments, which were the combinations of four sugar cane genotypes (G.2006-6 , G.2003-49, C.57-14 and G.T.54-9 as a check), three potassium rates (48 kg inorganic K2O , 40 kg inorganic K2O + 400 gram bio K and 34 kg inorganic K2O + 800 gram bio K /fed.) and four nitrogen rates (210 kg inorganic N, 190 kg inorganic N + 300 gram bio N, 170 kg inorganic N + 600 gram bio N and 150 kg inorganic N + 900 gram bio N fed . A split-split plot design with three replications was used. The results showed that the four sugar cane genotypes significantly differed in the all studied traits. The results indicated
that studied bio and inorganic potassium fertilization rates affected significantly in millble cane number, height, and cane yield in both seasons, as well as millable cane diameter weight and nitrogen % in leaves in first season only. Results showed that studied, bio and inorganic nitrogen fertilization levels affected significantly in millable cane number, height, weight, and cane yield in both seasons. While, millable cane diameter in first season only. Under conditions of the present work, supplying sugar cane G.2006-6 genotypes with 100% of the recommended inorganic k-rate (48 kg K2O /fed.) integrated with 100% of the recommended inorganic N-rate (210 kg/fed.) and 90% of the recommended inorganic K-rate (40 kg) + 400 g bio- K /fed. integrated with 70% of recommended inorganic N-rate (150 kg) + 900g bio- N /fad resulted in the highest cane yield/fed. in 1st and 2nd seasons respectively.
Keywords: (Sugar cane genotypes, Mineral and bio-K &N fertilization, cane yield.)
