Changes in the mineral composition of leaves of IAC- 971-1 grape, a brazillian hybrid, from full bloom to postharvest
Date
3-1976
Degree
Bachelor of Science in Agriculture
Major Course
Major in Horticulture
College
College of Agriculture and Food Science (CAFS)
Adviser/Committee Chair
Roberto E. Coronel
Abstract
Leaf blade and petiole from the 2nd to 8th node of fruiting shoots of 'IAC-971-1' grape were analyzed for N, P, K, Ca and Mg from full bloom to postharvest. In both tissues, N and P were highest at full bloom. Luminar N significantly decreased until mid-berry development and irregularly fluctuated thereon. Phosphorous significantly decreased with maturity.
Calcium and petiolar Mg and N significantly increased with development. The peak of Ca and petiolar Mg content was reached at near postharvest.
Throughout the growing season, K followed an irregular trend in both tissues while laminar Mg showed distinct variations between periods. Nitrogen and Ca levels were low in the petiole as compared to P, K, and Mg.
The absolute quantity in the petiole reflects the trend for most of the nutrient elements. It is increasing for Ca, petiolar N and Mg and variable for K, P and laminar Mg and N.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Recommended Citation
Angeles, Domingo E., "Changes in the mineral composition of leaves of IAC- 971-1 grape, a brazillian hybrid, from full bloom to postharvest" (1976). Undergraduate Theses. 10214.
https://www.ukdr.uplb.edu.ph/etd-undergrad/10214
Document Type
Thesis