VIII.—The available plant food in soils

Available zinc status of lebanese soils

Development of an alternative to the olsen test for determining corn plant-available phosphorus in calcareous soils

In this research, several chemical extractants and modified Olsen methods were studied in 25 surface-calcareous soils (0-30 cm) for determining available phosphorus (P) for corn (Zea mays L.) plant. In this experiment, the highest correlation was obtained between extracted P by Olsen and Colwell methods (NaHCO3-extractable P) and dry weight of corn shoot (r =0.67 and 0.75, p

Food Security in Bangladesh: Insight from Available Literature

Background: Bangladesh is a developing country; so, it is faced with the great challenge of food insecurity. In spite of achieving self-sufficiency in food production, a huge number of people experience the food insecure situation in this country. Since long time ago, scientists are striving to feed the growing population of Bangladesh. However, this study was conducted to assess the present si...

Plant water uptake in drying soils.

Over the last decade, investigations on root water uptake have evolved toward a deeper integration of the soil and roots compartment properties, with the goal of improving our understanding of water acquisition from drying soils. This evolution parallels the increasing attention of agronomists to suboptimal crop production environments. Recent results have led to the description of root system ...

Plant-parasitic nematodes in maine agricultural soils.

In a survey of plant-parasitic nematodes associated with agricultural crops in nine Maine counties, 744 soil samples from 26 potential host plants were analyzed between November 1987 and January 1989. The most commonly encountered nematode genus was Pratylenchus, occurring in 85% of the samples from most crops, except blueberries and onions. Pratylenchus penetrans and P. crenatus were found com...