Growing potatoes (Solanum tuberosum) using the idle rice fields in Southern China and Indo-Gangetic Plains of India winter season through rice–potato rotation (RC) system could support future food security. However, modulation capacity RC on soilborne fungal pathogens is still unclear. In current study, a pot experiment was designed conducted to monitor dynamics soil community composition betwe...

There are more than 60 species in the genus Phytophthora (94), and most are destructive plant pathogens. Extensive efforts are directed at the control of Phytophthora diseases each year, yet they still cause serious crop losses. For example, more than $200 million in lost production annually is attributed to Phytophthora diseases in Australia alone (47). Late blight, caused by P. infestans, pro...

Monoconidial cultures of 15 isolates of Trichoderma harzianum were characterized on the basis of 82 morphological, physiological, and biochemical features and 99 isoenzyme bands from seven enzyme systems. The results were subjected to numerical analysis which revealed four distinct groups. Representative sequences of the internal transcribed spacer 1 (ITS 1)-ITS 2 region in the ribosomal DNA ge...

Organic matter and its replenishment has become a major component of soil health management programs. Many of the soil's physical, chemical, and biological properties are a function of organic matter content and quality. Adding organic matter to soil influences diverse and important biological activities. The diversity and number of free-living and plant-parasitic nematodes are altered by rotat...

Soilborne fungal and oomycete pathogens are the causal agents of several important plant diseases. Infection frequently co-occurs with herbivory by root-feeding insects, facilitating tripartite interactions that modify plant performance and mortality. In an agricultural context, interactions between pathogens, herbivores, and plants can have important consequences for yield protection. However,...

(75% at p H 7.2 and 0 at p H 5.7 and 8.7). In our tests at 0.005 M concentration, host survival was 86-92% at all p H values, and no correlation was evident hetween host survival and pH. Many factors such as salinity, temperature, and pol lut ion can affect the efficiency of R. culicivorax. Although lower p H values appear to enhance the ability of the preparasi te to infect a host, p H is prob...