Of the 60 or more species of the genus Annona, family Annonaceae, the soursop, A. muricata L., is the most tropical, the largest-fruited, and the only one lending itself well to preserving and processing.
It is generally known in most Spanish-speaking countries as guanabana; in E1 Salvador, as guanaba; in Guatemala, as . . . → Read More: Soursop Seed Crop
Seeds are regarded as the most important input in crop production. All other inputs, such as fertilizer, pesticides, and insecticides, are only supportive. Good seeds start with a good crop variety with high productivity and resistance or tolerance to major prevalent biotic and abiotic stresses in the production environment.
Other factors include varietal genetic . . . → Read More: Recommended Seed Crop Production Practices For Rice
Sorghum is suited to a wide range of soil types, from light loams to heavy clay soils. While best results can be expected from free-working, well-drained soils of high fertility, useful returns are frequently obtained from second-class agricultural land.
In selecting a site for sorghum that is expected to ensure a very . . . → Read More: Recommended Seed Crop Production Practices For Sorghum
Variety for a cross-pollinated crop means a self-reproducing population of plants that, although not genetically identical, exhibit the same unique, recognizable characteristics.
Such varieties include landrace varieties, synthetic varieties made from inbred parents, and varieties resulting from recurrent selection, including mass selection.
A variety, therefore, is a narrow-based breeding population exhibiting a range . . . → Read More: Seed Crop Production Practices Of Cross- Or Open-Pollinated Millet Varieties
Considerations for breeder and foundation seed multiplication
The half-sib method is commonly used to produce breeder and foundation seeds of maize. With this method, rows are arbitrarily designated as males and females in a ratio of 1 male to 2–4 female rows just before flowering.
All plants in the female rows are de-tasseled.
. . . → Read More: Management Of A Seed Crop Production Field For Maize
Breeding programs are continuously developing new maize varieties. These are often higher yielding than the older varieties or farmers’ varieties, and may have other value added traits, such as early maturity or better disease resistance.
To benefit from a new, improved variety, farmers should first obtain seeds. Seed production should be done in a . . . → Read More: Recommended Seed Crop Production Practices For Maize