/ha/year. Phosphorus and K were supplemented with applications of calcium phosphate and potassium chloride solution in the spring and fall resulting in 11 kg P/ha and 60 kg K/ha. Measurements. Tiller density and root mass were measured at three different depths on nine
set point of 21 °C. Table 2. Rooting percentage, average culm number, root density (number), root length, culm dry mass, root dry mass, total dry mass, root-to-culm dry mass ratio, culm mass ratio, and root mass ratio during root development of purple
from the growth chamber and placed in a cooler at 5 °C until harvest. Bermudagrass plants were harvested, and seedling number, tiller number, shoot dry weight (SDW), root length density (RLD), root mass density (RMD), specific root length (SRL), and
calculated as shoot dry mass divided by height. Using data from the five representative plants, specific leaf area (SLA) was calculated as leaf area divided by shoot dry mass and root mass fraction was calculated as root dry mass / (shoot + root dry mass
. The remaining roots were dried in an oven for at least 48 h and weighed. Root mass density (RMD) was calculated as the total root dry weight/cm 3 of soil sampled. Percent root colonization was determined using the magnified intersections method of
known lengths. Root length density was defined as root length divided by the volume of the soil core. After length measurements, samples were dried in a laboratory oven at 70 °C for 24 h and root mass was determined by weigh (mg per tube). TNC, RSC, and
and evaporative cooling pads. The greenhouse had a 150-μm-thick low-density polyethylene cover (K50), which allowed 50% of ultraviolet light to shine on plants, with an antiaphid screen. Maximum and minimum temperatures and relative humidity during the
‘Honey Yellow’ was susceptible (Rf = 22.0) to M. incognita race 1 ( Table 1 ). Table 1. Root gall index (GI), egg mass index (EMI), egg recovery, and reproduction factor (Rf) of grafted and non-grafted honeydew melon ‘Honey Yellow’ in the greenhouse
growth is not known nor is a threshold temperature that is detrimental to crown growth. As with root dry mass, we did not find differences in crown dry mass between NT and either tube or between tubes ( Table 2 ). Table 2. Contrasts of blueberry bush
Most specialty crops produced in the United States are propagated in greenhouses. Problems with daily and seasonal environmental changes during greenhouse propagation can lead to slow rooting, inconsistent growth, poor transplant quality, and