CONTENTS
 Page


INTRODUCTION ...... ..... ........................ .................... ........ ........ 5


M ETHODS ..... ...................................... .................... ... ...... 5


 Collection of Samples ............................. ..... ... .. ................. 5


 Preparation of Sam ples ........................ ........ .......... ..................... 6


 Carotene ................................ ................................................. 6


 Ascorbic Acid .....................................-........... ..- ........ 7


EXPERIMENTAL .......................................... ..................... 8


 Average Values .............. .... .......................... 8


 V variety D ata .............................................. ............................................ 11


 Fertilization Under Field Conditions ........................ .............. 14


 Fertilization in Pot Cultures ............................................... ................... 18


DISCUSSIN .................................................................................. 19


SUM MARY ................. ................... ........................... 19


LITERATURE CITED ....................................................... 20