scholarly journals Sesame (Sesamum indicum L.) Cultivars Yield Response to Nitrogen Rates Under Full and Deficit Irrigation

2021 ◽  
Vol 11 (3) ◽  
Keyword(s):  
Deficit Irrigation ◽  
Sesamum Indicum ◽  
Yield Response ◽  
Nitrogen Rates

Wheat Yield Response and Plant Structure Following Increased Nitrogen Rates and Plant Growth Regulator Applications in Kentucky

cftm ◽  
2016 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Carrie A. Knott ◽  
David A. Van Sanford ◽  
Edwin L. Ritchey ◽  
Ethan Swiggart
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Wheat Yield ◽  
Yield Response ◽  
Plant Structure ◽  
Nitrogen Rates

A comparison of the yield responses of four grasses to a wide range of nitrogen application rates

1985 ◽  
Vol 105 (2) ◽  
pp. 381-387 ◽  
Author(s):  
D. Reid
Keyword(s):  
Dry Matter ◽  
Growth Curves ◽  
Yield Response ◽  
Dry Matter Yield ◽  
Meadow Fescue ◽  
Nitrogen Rate ◽  
Yield Data ◽  
Wide Range ◽  
Yield Responses ◽  
Nitrogen Rates

SUMMARYThe yield results are reported for an experiment in which 21 rates of nitrogen fertilizer were applied on pure-sown swards of four grasses, S. 24 and Barvestra perennial ryegrass, S. 37 cocksfoot and S. 53 meadow fescue. Growth curves fitted to the herbage yield data for each grass in each year are presented. On average the total dry-matter yield curves for the two ryegrasses were similar to one another, but showed a slightly smaller response to nitrogen rates below 300 kg/ha than did S. 23 ryegrass in an earlier experiment, and a more rapid decrease in response at higher rates. S. 37 cocksfoot had a similar dry-matter yield response to the ryegrasses at the low nitrogen rates, but the response decreased more rapidly at nitrogen rates over 250 kg/ha. The dry-matter yield response of S. 53 fescue decreased even more rapidly with nitrogen rates over 200 kg/ha. The mean estimates of the optimal nitrogen rate for each of the four grasses, i.e. the nitrogen rate at which the dry-matter response had decreased to 10 kg/kg N, was 380, 372, 357 and 327 kg N/ha for S. 24, Barvestra, S. 37 and S. 53 respectively, compared with 409 kg/ha for S. 23 ryegrass in the earlier experiment.

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