Перейти в український iнтерфейс (версiю) / Change to Ukrainian interface versionПерейти в англiйський iнтерфейс (версiю) / Change to English interface versionПерейти в росiйський iнтерфейс (версiю) / Change to Russian interface versionПочаткова сторiнка / Home pageОчистити останнi запитуванi результати / Clear last query resultsДовiдкова сторiнка / Help page
Пошук спецiальних термiнiв / Search for specific termsПерегляд по тематичним категорiям / Browse by subject categoryПерегляд списку заголовкiв по алфавiту / Browse alphabetical list of titlesПерегляд по органiзацiям / Browse by organizationПерегляд спецiального тематичного видання / Browse special topic issues

Закрити книгу / close this bookAbstracts on Sustainable Agriculture (GTZ; 1992; 423 pages)
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts On Traditional Land-Use Systems
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on farming systems research and development
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on integrated systems
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on cropping system
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agroecology
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agrometeorology
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on agroforestry
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on homegardens
Закрити папку / close this folderAbstracts on seed production
Перегляд документу / View the documentAcknowledgements
Перегляд документу / View the document1. Good quality bean seed.
Перегляд документу / View the document2. A pocket directory of trees and seeds in Kenya.
Перегляд документу / View the document3. Seed production of agricultural crops.
Перегляд документу / View the document4. Seed potato systems in the Philippines: a case study.
Перегляд документу / View the document5. Seed enrichment with trace elements.
Перегляд документу / View the document6. Current practices in the production of cassava planting material.
Перегляд документу / View the document7. Alternative approaches and perspectives in breeding for higher yields.
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on plant protection
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on water management
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on soil fertility
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on erosion and desertification control
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on potential crops for marginal lands
 

6. Current practices in the production of cassava planting material.

In: Proc. of a Reg. Workshop, Cali, Colombia, 1983, pp. 41-45

This paper reviews some of the current practices in stake production and points out some elements necessary for improvement.

Selection of stakes:

A conscientious selection of mother plants according to nutritional and health status, followed by a careful selection of stakes from these plants, is hardly ever done in traditional production systems.

In traditional systems, hardly any selection is made with regard to the maturity of the stake. This means that along with stakes of adequate maturity (recognized by a relation of total to-pith diameter of between 2:1 and 3:1), a large number of either too young, i.e., succulent stakes, or too old, i.e., very lignified stakes, are selected. This leads to plant loss and a patchy, uneven sprouting of stakes.

Cutting and preparation:

 

- Cutting methods:

A great variety of cutting methods are presently practiced worldwide. In one of the common methods, the long stem is placed on a base.

 

- Stake length:

As with cutting methods, farmers use a great variety of stake lengths in commercial plantings. Stakes as short as 10 cm with only two to four buds may be used by some, whereas others cut and plant stakes of 40 cm or more.

 

- Mukibat system:

The traditional and rudimentary methods of selecting and preparing cassava planting material stand in contrast to a very careful and elaborate system known as the Mukibat system. A well-selected Manihot esculenta stake is used as a stock onto which a Manihot glaziovii scion is grafted.

Handling before planting:

 

- Transport:

The majority of cassava planting material is transported in the form of long stems to facilitate handling and reduce moisture loss.

 

- Chemical treatment:

Chemical treatment of stakes for pest control and protection against soil-and air-borne fungi after planting is not a common practice among cassava producers. Many farmers simply do not know about this way of stake protection.

Concluding cassava planting material is obtained in a very simple manner from low-value raw material and probably for this reason no refined stake production technology has developed among farmers. It is suggested that in order to improve stake production technology, the primary considerations are selection of stakes for healthiness and adequate maturity, non-damaging cutting practices and the use of appropriate stake lengths.

1193 92 - 9/40

Seed production

Review, ideotype breeding, Australia, alternative yield improvement

MARSHALL, D.R.

Попередня секцiя / to previous section Наступна секцiя / to next section

[Українська]  [англiйська]  [росiйська]