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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
Вiдкрити папку i переглянути змiст / Open this folder and view contentsAbstracts on seed production
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
Закрити папку / close this folderAbstracts on soil fertility
Перегляд документу / View the documentAcknowledgements
Перегляд документу / View the document1. Soil constraints on sustainable plant production in the tropics.
Перегляд документу / View the document2. Impact of agricultural practices on soil pollution.
Перегляд документу / View the document3. The use of organic biostimulants to help low input sustainable agriculture.
Перегляд документу / View the document4. Nitrogen cycling in high-input versus reduced-input arable farming.
Перегляд документу / View the document5. Green manure in rice farming.
Перегляд документу / View the document6. Role of green manure in low-input farming in the humid tropics.
Перегляд документу / View the document7. Green manuring with vetch on acid soil in the highland region of Rwanda.
Перегляд документу / View the document8. Tropical lowland rice response to preceding crops, organic manures and nitrogen fertilizer.
Перегляд документу / View the document9. Pearl millet and cowpea yields in sole and intercrop systems, and their after-effects on soil and crop productivity.
Перегляд документу / View the document10. Influence of some characteristics of bean seed and seedlings on the tolerance to low phosphorus availability in the soil. (Infuencia de algunas caracteristicas de las semillas y plantulas de frijol Phaseolus vulgaris L. sobre la tolerancia a la baja disponibilidad de fósforo en el suelo )
Перегляд документу / View the document11. Evaluation of diverse effects of phosphate application on legumes of arid areas.
Перегляд документу / View the document12. Effect of n and p fertilizers on sustainability of pigeonpea and sorghum systems in sole and intercropping.
Перегляд документу / View the document13. Efficient fertilizer use in acid upland soils of the humid tropics.
Перегляд документу / View the document14. Vesicular-arbuscular mycorrhiza management.
Перегляд документу / View the document15. Impact of tropical va mycorrhizae on growth promotion of cajanus cajan as influenced by p sources and p levels.
Перегляд документу / View the document16. Benefit and cost analysis and phosphorus efficiency of va mycorrhizal fungi colonizations with sorghum (sorghum bicolor) genotypes grown at varied phosphorus levels.
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
 

12. Effect of n and p fertilizers on sustainability of pigeonpea and sorghum systems in sole and intercropping.

IPN, 15, 1992, pp. 12-15

This paper attempts to identify nutrient management in sole and intercropping systems which improves the soil environment and maximizes productivity on a sustained basis.

Three cropping systems, sole pigeonpea, sole sorghum, and pigeonpea intercropped with sorghum (1:2) were tested under two sets of fertilizer regions.

The sustainable yield index (SYI) and the sustainable value index (SVI) were computed to analyze the comparative performance of sole and intercropping systems with respect to fertilizer use.

The data indicate among others that sole pigeonpea gave maximum pigeonpea seed equivalent yield followed by pigeonpea + sorghum intercropping at all levels of N under study. Enhancing the application of nitrogen from 15 to 60 kg ha-1 increased the yield by 40% for sole pigeonpea and sole sorghum, and by 54% for pigeonpea + sorghum intercropping system in terms of pigeonpea seed equivalent over the lowest dose. This showed that an intercrop of pigeonpea + sorghum was beneficial and efficient compared to sole cropping in respect of nitrogen uptake. The maximum LER (1.24) was obtained in pigeonpea + sorghum intercropping system at 60 kg N ha-1.

The superiority of intercropping over sole cropping in terms of insurance from risk, better resource use, and higher return has been highlighted by many workers. But sustainable fertilizer management in an intercropping system is not yet well understood. Under dryland situations, land, water, and crop management systems which guarantee sustained production and productivity over a wide range of environments or over many years in the same location would qualify to be called sustainable agricultural systems.

1249 92 - 12/75

Soil fertility

Review, book, humid tropics, acid upland soils, Oxisols, Ultisols, plant nutrients, organic matter, soil management systems, fertilizer, crop production, FAO

VON UEXKULL, H.R.

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