Effect of hill spacing and nitrogen rates on growth yield and yield components for Giza 81 cotton variety [Egypt]
1985
El-Shinnawy, A.H.M. | Mohamed, H.M.H. (Ministry of Agriculture, Cairo (Egypt). Cotton Research Inst.)
An experiment was carried out at Sakha Agric. Res. Sta., during 1981 and 1982 seasons to study the effect of plant density (10 and 20 cm between hills) and nitrogen rates (0,30 and 60 kg N/fad.) on growth, yield and yield components for Giza 81 variety. The experimental design was splitplot with four replicates. The results could be summarized as follows: With respect to distances between hills; plant height, days from planting to first flower opening, boll weight and seed cotton yield/fad. were not affected significantly, while, number of plants/fad., number of open bolls/ plant and seed cotton yield/plant were significantly affected in both seasons and combined analysis. As for nitrogen rates; plant height, days from planting to first flower opening, number of plants/ fad., boll weight, number of open bolls/plant and seed cotton yield/ plant were not affected significantly, while seed cotton yield/ fad. was affected significantly in both seasons and combined analysis.
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