Osmoconditioning seeds of four crop species using botanical extracts
2012
Yawman, M. | Padua, D.P., Benguet State Univ., La Trinidad, Benguet (Philippines)
Corn, peanut, millet and field bean seeds were subjected to osmoconditioning using extracts of moringa (Moringa oleifera), papaya (Carica papaya), golden bush (Haplopapus linearifolius), mushroom and coconut (Cocos nucifera) water. The osmoconditioned seeds of corn, millet and peanut germinated 1-2 days earlier than the counterpart seeds conditioned only with water. With respect to the different parameters measured, the extracts seem to have varying but specific effects on certain crop seeds. The root dry matter yield in field bean was enhanced by all the extracts. Coconut water and papaya extracts produced longer shoots only in field bean and peanut respectively. On the dry matter of seedlings, only coconut water, papaya and moringa tend to increase it. All the botanical extracts however, greatly enhanced the seedling vigor in corn, peanut and millet. The extracts, specially papaya and coconut water, have also shown a possible natural fungicidal effect as they prevented or at least reduced rotting of roots in seedlings of all the test crops. It seems prudent to have laboratory tests to determine the chemical content of the extracts used that is responsible for the positive effect of osmoconditioning seeds.
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