General use of mycorrhizal fungi in cropping is reviewed. Instructions on producing inoculum from a commercial starter-culture are given.

Soil microorganisms convert nitrogen in soil organic matter into inorganic forms that plants can take up; the process is called N mineralization. The N cycle and factors affecting mineralization are reviewed. Mineralization ...

Obtaining seeds of cover crops, green manure crops, and improved forage species is discussed, some sources in Hawaii are identified, and consideration is given to weed risk assessment regarding use of the various plants ...

Repeated long-term applications of blended fertilizers (containing N, P, and K) have resulted in soil P levels that are in excess of optimal in many situations. Field experiments on five farms (on three soil series) compared ...

A bacterial wilt is the factor most limiting yields of culinary ginger in Hawaii. A system developed to produce ginger in an artificial medium in greenhouse culture is described.

The study showed that an agronomic model and economic analysis are useful tools for agricultural decision-making in Hawaii. Crop models shortened the time needed to test and determine suitable management schemes to produce ...

Ten major soil orders found in Hawaii are described, and maps show their distribution on the six main Hawaiian islands.

Sampling for environmental pollutants that result from agricultural practices is described.

An experiment studied effects of sunn hemp or oat plantings on loss of sediment and nutrients from an agricultural soil in runoff following rainfall. The study concluded that both plants can effectively reduce sediment and ...

The utility of plant barriers to reduce aphid movement in crops and the resulting transmission of plant viruses is discussed.