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)

Document Type

Thesis

This document is currently not available here.

Share

COinS