Soil Polarization and Dacthal: Influence on Weeds, Growth, and Root Microflora of Collards

Abstract

<jats:p>Soil polarization for 98 days in 1985 resulted in a 91% reduction of weeds present in collard greens <jats:italic>(Brassica oleracea acephafa</jats:italic> L.) plots during 1986. Soil solarization was more effective in controlling weeds in collard green plots when compared to an application of Dacthal-75W herbicide in nonsolarized plots. Collard green plants grown in solarized soil showed an increase in yield and other growth responses. Soil samples from the rhizosphere of plants grown in solarized soil showed higher population levels of bacteria and thermotolerant fungi than from nonsolarized soil. There were significant negative responses in marketable yield and root growth of collard greens and in soil microflora in solarized soil in response to Dacthal-75W herbicide application. Chemical name used: dimethyltetrachloroterephthalate (Dacthal-75W).</jats:p>

Effect of Soil Solarization, Cover Crops, and Metham on Field Emergence and Survival of Buried Annual Bluegrass(Poa annua) Seeds1

“…Given the shortcomings of solarization for weed control, alternative strategies have been proposed to improve the efficacy of solarization for marginal situations. One prospect is the use of low rates of fumigants (e.g., metham) or herbicide coupled with solarization (Hartz et al 1993;Stevens et al 1990). Another strategy reported to enhance suppression of soilborne diseases is the use of green manure cover crops with soil solarization (Ramirez-Villapudua and Munnecke 1988).…”

Soil solarization improves soil fertility in addition to weed management in sesame under subtropical conditions of Pakistan

“…The rise in the number of capsules plant -1 of sesame from increasing solarization durations was due to the reduction in weed infestation during the flowering stage and an increase in NPK availability by soil solarization. Benlioglu et al (2005) and Stevens et al (1990) reported that the number of capsules per plant increased by soil solarization because solarization increased the soil fertility, which ultimately affected the yield parameters positively and increased the number of capsules per plant.…”

Fumigation and Solarization Practice in Plasticulture Systems

“…Other organic amendments, e.g., residues of cruciferous crops, have been shown to release biotoxic volatile compounds when heated (Gamliel and Stapleton, 1993b) to increase the effect of solarization through a process of biofumigation (Ramirez-Villapudua and Munnecke, 1988;. Other studies showed that combining solarization with either soil pesticides (Chellemi et al, 1994;Stapleton and DeVay, 1983;Stevens, et al, 1990) or biological control agents (Ristaino et al, 1991;Tjamos and Fravel, 1995) also can increase the pesticidal toxicity of the treatment effectively. A pamphlet describing solarization is available from University of California Publications and is currently being revised and updated (Pullman et al, 1982).…”