Nitrogen Rate Effects on Lemon Production, Quality and Leaf Nitrogen1

Autor: W. W. Jones, T. W. Embleton, S. B. Boswell, G. E. Goodall, E. L. Barnhart
Rok vydání: 1970
Předmět:
Zdroj: Journal of the American Society for Horticultural Science. 95:46-49
ISSN: 2327-9788
0003-1062
DOI: 10.21273/jashs.95.1.46
Popis: ‘Prior Lisbon’ lemon trees were treated with increasing rates of N fertilizer up to 6 lb. N per tree per year. Likewise, ‘Monroe Lisbon’ lemon trees were treated with up to 4 lb. N per tree per year. Also, for the Trior Lisbon/one treatment was 6 urea foliage sprays per year which supplied about 2 lb. N per tree per year. For the Trior Lisbon’ there was a tendency for yields to increase with increasing N rates with the high rate yielding significantly more than the low rate. Yield was highly correlated with leaf N with maximum yield occurring at about 2.2% leaf N. Urea foliage sprays maintained leaf N and maximum yield. Fruit quality was not adversely affected by increasing N. As with Prior ‘Lisbon’, ‘Monroe Lisbon’ yields increased with increasing N but the maximum yield occurred at about 2.5% leaf N. Yields from single N applications were not different from split N applications.
Databáze: OpenAIRE