Studies on Lifting Type Digger for Root Crops (I)

Forms and Pulling Resistance Force of Baker's Garlic and Garlic Plants

Abstract

As the fundamental studies on mechanical harvesting of Baker's garlic and garlic, the pulling resistance force was measured under the growing state by using the lifting equipment designed.
Some results obtained in the experiment are summarized as follows.
1. Baker's garlic
1) Using pulling test method (A) and (B), the percentages of the specimen which could be pulled up without the cutting of leaves, were as follows.
2) The specimens which could be pulled up were better developed in forms, especially in the leaf growth, than those specimens which could not be pulled up.
3) The results of the multiple regression analysis on the effect of the maximum pulling resistance force R_max (kg) revealed that the weight of bulbs W_b (g), test day T (day) and moisture content ω_10-20 (%) were highly significant.
2. Garlic
1) All of specimens could be pulled up without cutting of stems at the pulling test method (A), and it was recognized that there was rather high correlation between R_max (kg) and bulb diameter a·b (cm), weight of plant W (g).