Abstract
Differences in juice quality, when found, were usually very small among samples from pineapple orange trees following 4 selected spray oil fractions and a non-oil treatment applied in early July 1963-65. Juice quality was determined on all samples each fall. Percentage soluble solids did not differ following a heavier naphthenic or a “re-formed” oil fraction and non-oil treatment. In 9 comparisons, solids following heavier paraflinic and lighter naphthenic oil fractions were reduced slightly below that of the non-oil treatment 3 and 4 times, respectively. Percentage acid was greater in all samples checked in 1964 than in 1963 or 1965. The greater acid percentages were found with the lighter naphthenic oil treatment and the least acid with the non-oil treatment. Acid was intermediate for samples from other oil plots. Leaf drop generally was heaviest during the first 3 weeks after treatment, declined for 3 to 4 weeks and then increased again during weeks 8-10. The greatest leaf drop was recorded with the heavier paraffinic and naphthenic oils of comparable boiling temperatures, while leaf drop with the re-formed oil treatment was intermediate between the above-mentioned 2 oils and the lighter naphthenic oil treatment. Leaf drop from trees sprayed with the various oils was 37 to 65% greater than with the non-oil treatment, but in no case was it considered excessive.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
