A total of 81 Tyraniidae birds were examined, 80 Pitangus sulphuratus (Linnaeus, 1766) (Great kiscadee), and one Machetornis rixosa (Vieilot, 1819) (Cattle tyrant), for collection of nasal mites, which were identified as Ptilonyssus spinosus (Brooks & Strandtmann, 1960) and Sternostoma longisetosae (Hyland, 1961) (Rhinonyssidae). This finding characterises the first report of P. spinosus and S....

Seed germination is the key step for successful establishment, growth and further expansion of population especially for alien plants with annual life cycle. Traits like better adaptability and germination response were thought to be associated with plant invasion. However, there are not enough empirical studies correlating adaptation to environmental factors with germination response of alien ...

A análise da fitossociologia em sistemas agrícolas sustentáveis é necessária por ser, muitos casos, indicador de problemas e condições do solo, permitindo a condução manejo adequado agroecossistema. Desse modo, o objetivo com presente estudo foi analisar plantas associadas às solo sistema agroecológico na região brejo paraibano. As análises experimentais foram realizadas área total 342 m2. Real...

Abstrak. Ekstrak umbi teki terbukti mengandung senyawa yang berpotensi alelopati karena mampu menghambat pertumbuhan gulma bayam duri. Pelarut merupakan faktor penting dalam proses ekstraksi senyawa. digunakan adalah metanol bersifat polar, dapat menarik polar dan nonpolar. Penelitian ini bertujuan untuk mengidentifikasi aktivitas ekstrak pada beberapa konsentrasi terhadap dilakukan di Laborato...

a total of 65 pollen types were identified from two years atmospheric pollen survey in the environmental conditions of south assam. out of them, eight pollen types viz., acacia auriculiformis, amaranthus spinosus, cassia alata, cleome gynandra, cocos nucifera, imperata cylindrica, ricinus communis and trewia nudiflora, were selected for biochemical studies on the basis of their dominance in the...